Добавил настройки маппинга через атрибуты

SPiluSZharuProject/SPiluSZharuBuisnessLogic/Implementations/PostBuisnessLogicContract.cs

@@ -0,0 +1,93 @@
+using SPiluSZharuContracts.BuisnessLogicContracts;
+using SPiluSZharuContracts.DataModels;
+using SPiluSZharuContracts.StorageContracts;
+using Microsoft.Extensions.Logging;
+using System.Text.Json;
+using SPiluSZharuContracts.Exceptions;
+using SPiluSZharuContracts.Extensions;
+
+namespace SPiluSZharuBuisnessLogic.Implementations;
+
+internal class PostBuisnessLogicContract(IPostStorageContract postStorageContract, ILogger logger) : IPostBuisnessLogicContract
+{
+    private readonly ILogger _logger = logger;
+    private readonly IPostStorageContract _postStorageContract = postStorageContract;
+
+    public List<PostDataModel> GetAllPosts(bool onlyActive)
+    {
+        _logger.LogInformation("GetAllPosts params: {onlyActive}", onlyActive);
+        return _postStorageContract.GetList(onlyActive) ?? throw new NullListException();
+    }
+
+    public List<PostDataModel> GetAllDataOfPost(string postId)
+    {
+        _logger.LogInformation("GetAllDataOfPost for {postId}", postId);
+        if (postId.IsEmpty())
+        {
+            throw new ArgumentNullException(nameof(postId));
+        }
+        if (!postId.IsGuid())
+        {
+            throw new ValidationException("The value in the field postId is not a unique identifier.");
+        }
+        return _postStorageContract.GetPostWithHistory(postId) ?? throw new NullListException();
+    }
+
+    public PostDataModel GetPostByData(string data)
+    {
+        _logger.LogInformation("Get element by data: {data}", data);
+        if (data.IsEmpty())
+        {
+            throw new ArgumentNullException(nameof(data));
+        }
+        if (data.IsGuid())
+        {
+            return _postStorageContract.GetElementById(data) ?? throw new ElementNotFoundException(data);
+        }
+        return _postStorageContract.GetElementByName(data) ?? throw new ElementNotFoundException(data);
+    }
+
+    public void InsertPost(PostDataModel postDataModel)
+    {
+        _logger.LogInformation("New data: {json}", JsonSerializer.Serialize(postDataModel));
+        ArgumentNullException.ThrowIfNull(postDataModel);
+        postDataModel.Validate();
+        _postStorageContract.AddElement(postDataModel);
+    }
+
+    public void UpdatePost(PostDataModel postDataModel)
+    {
+        _logger.LogInformation("Update data: {json}", JsonSerializer.Serialize(postDataModel));
+        ArgumentNullException.ThrowIfNull(postDataModel);
+        postDataModel.Validate();
+        _postStorageContract.UpdElement(postDataModel);
+    }
+
+    public void DeletePost(string id)
+    {
+        _logger.LogInformation("Delete by id: {id}", id);
+        if (id.IsEmpty())
+        {
+            throw new ArgumentNullException(nameof(id));
+        }
+        if (!id.IsGuid())
+        {
+            throw new ValidationException("Id is not a unique identifier");
+        }
+        _postStorageContract.DelElement(id);
+    }
+
+    public void RestorePost(string id)
+    {
+        _logger.LogInformation("Restore by id: {id}", id);
+        if (id.IsEmpty())
+        {
+            throw new ArgumentNullException(nameof(id));
+        }
+        if (!id.IsGuid())
+        {
+            throw new ValidationException("Id is not a unique identifier");
+        }
+        _postStorageContract.ResElement(id);
+    }
+}

SPiluSZharuProject/SPiluSZharuBuisnessLogic/Implementations/ProductBuisnessLogicContract.cs

@@ -0,0 +1,80 @@
+using Microsoft.Extensions.Logging;
+using SPiluSZharuContracts.BuisnessLogicContracts;
+using SPiluSZharuContracts.DataModels;
+using SPiluSZharuContracts.Enums;
+using SPiluSZharuContracts.Exceptions;
+using SPiluSZharuContracts.Extensions;
+using SPiluSZharuContracts.StorageContracts;
+using System.Text.Json;
+
+namespace SPiluSZharuBuisnessLogic.Implementations;
+
+internal class ProductBuisnessLogicContract(IProductStorageContract productStorageContract, ILogger logger) : IProductBuisnessLogicContract
+{
+    private readonly ILogger _logger = logger;
+    private readonly IProductStorageContract _productStorageContract = productStorageContract;
+
+    public List<ProductDataModel> GetAllProducts(bool onlyActive = true)
+    {
+        _logger.LogInformation("GetAllProducts params: {onlyActive}", onlyActive);
+        return _productStorageContract.GetList(onlyActive) ?? throw new NullListException();
+    }
+
+    public List<ProductHistoryDataModel> GetProductHistoryByProduct(string productId)
+    {
+        _logger.LogInformation("GetProductHistoryByProduct for {productId}", productId);
+        if (productId.IsEmpty())
+        {
+            throw new ArgumentNullException(nameof(productId));
+        }
+        if (!productId.IsGuid())
+        {
+            throw new ValidationException("The value in the field productId is not a unique identifier.");
+        }
+        return _productStorageContract.GetHistoryByProductId(productId) ?? throw new NullListException();
+    }
+
+    public ProductDataModel GetProductByData(string data)
+    {
+        _logger.LogInformation("Get element by data: {data}", data);
+        if (data.IsEmpty())
+        {
+            throw new ArgumentNullException(nameof(data));
+        }
+        if (data.IsGuid())
+        {
+            return _productStorageContract.GetElementById(data) ?? throw new ElementNotFoundException(data);
+        }
+        return _productStorageContract.GetElementByName(data) ?? throw new ElementNotFoundException(data);
+    }
+
+    public void InsertProduct(ProductDataModel productDataModel)
+    {
+        _logger.LogInformation("New data: {json}", JsonSerializer.Serialize(productDataModel));
+        ArgumentNullException.ThrowIfNull(productDataModel);
+        productDataModel.Validate();
+        _productStorageContract.AddElement(productDataModel);
+    }
+
+    public void UpdateProduct(ProductDataModel productDataModel)
+    {
+        _logger.LogInformation("Update data: {json}", JsonSerializer.Serialize(productDataModel));
+        ArgumentNullException.ThrowIfNull(productDataModel);
+        productDataModel.Validate();
+        _productStorageContract.UpdElement(productDataModel);
+    }
+
+    public void DeleteProduct(string id)
+    {
+        _logger.LogInformation("Delete by id: {id}", id);
+        if (id.IsEmpty())
+        {
+            throw new ArgumentNullException(nameof(id));
+        }
+        if (!id.IsGuid())
+        {
+            throw new ValidationException("Id is not a unique identifier");
+        }
+        _productStorageContract.DelElement(id);
+    }
+}

SPiluSZharuProject/SPiluSZharuBuisnessLogic/Implementations/RestaurantBuisnessLogicContract.cs

@@ -0,0 +1,66 @@
+using Microsoft.Extensions.Logging;
+using SPiluSZharuContracts.BuisnessLogicContracts;
+using SPiluSZharuContracts.DataModels;
+using SPiluSZharuContracts.Exceptions;
+using SPiluSZharuContracts.Extensions;
+using SPiluSZharuContracts.StorageContracts;
+using System.Text.Json;
+
+namespace SPiluSZharuBuisnessLogic.Implementations;
+
+internal class RestaurantBuisnessLogicContract(IRestaurantStorageContract restaurantStorageContract, ILogger logger) : IRestaurantBuisnessLogicContract
+{
+    private readonly ILogger _logger = logger;
+    private readonly IRestaurantStorageContract _restaurantStorageContract = restaurantStorageContract;
+
+    public List<RestaurantDataModel> GetAllRestaurants()
+    {
+        _logger.LogInformation("GetAllRestaurants");
+        return _restaurantStorageContract.GetList() ?? throw new NullListException();
+    }
+
+    public RestaurantDataModel GetRestaurantByData(string data)
+    {
+        _logger.LogInformation("Get element by data: {data}", data);
+        if (data.IsEmpty())
+        {
+            throw new ArgumentNullException(nameof(data));
+        }
+        if (data.IsGuid())
+        {
+            return _restaurantStorageContract.GetElementById(data) ?? throw new ElementNotFoundException(data);
+        }
+        return _restaurantStorageContract.GetElementByName(data) ?? _restaurantStorageContract.GetElementByOldName(data) ??
+            throw new ElementNotFoundException(data);
+    }
+
+    public void InsertRestaurant(RestaurantDataModel restaurantDataModel)
+    {
+        _logger.LogInformation("New data: {json}", JsonSerializer.Serialize(restaurantDataModel));
+        ArgumentNullException.ThrowIfNull(restaurantDataModel);
+        restaurantDataModel.Validate();
+        _restaurantStorageContract.AddElement(restaurantDataModel);
+    }
+
+    public void UpdateRestaurant(RestaurantDataModel restaurantDataModel)
+    {
+        _logger.LogInformation("Update data: {json}", JsonSerializer.Serialize(restaurantDataModel));
+        ArgumentNullException.ThrowIfNull(restaurantDataModel);
+        restaurantDataModel.Validate();
+        _restaurantStorageContract.UpdElement(restaurantDataModel);
+    }
+    
+    public void DeleteRestaurant(string id)
+    {
+        _logger.LogInformation("Delete by id: {id}", id);
+        if (id.IsEmpty())
+        {
+            throw new ArgumentNullException(nameof(id));
+        }
+        if (!id.IsGuid())
+        {
+            throw new ValidationException("Id is not a unique identifier");
+        }
+        _restaurantStorageContract.DelElement(id);
+    }
+}

SPiluSZharuProject/SPiluSZharuBuisnessLogic/Implementations/SalaryBuisnessLogicContract.cs

@@ -0,0 +1,64 @@
+using SPiluSZharuContracts.BuisnessLogicContracts;
+using SPiluSZharuContracts.DataModels;
+using SPiluSZharuContracts.Exceptions;
+using SPiluSZharuContracts.Extensions;
+using SPiluSZharuContracts.StorageContracts;
+using Microsoft.Extensions.Logging;
+
+namespace SPiluSZharuBuisnessLogic.Implementations;
+
+internal class SalaryBuisnessLogicContract(ISalaryStorageContract salaryStorageContract, ISaleStorageContract saleStorageContract,
+    IPostStorageContract postStorageContract, IWorkerStorageContract workerStorageContract, ILogger logger) : ISalaryBuisnessLogicContract
+{
+    private readonly ILogger _logger = logger;
+    private readonly ISalaryStorageContract _salaryStorageContract = salaryStorageContract;
+    private readonly ISaleStorageContract _saleStorageContract = saleStorageContract;
+    private readonly IPostStorageContract _postStorageContract = postStorageContract;
+    private readonly IWorkerStorageContract _workerStorageContract = workerStorageContract;
+
+    public List<SalaryDataModel> GetAllSalariesByPeriod(DateTime fromDate, DateTime toDate)
+    {
+        _logger.LogInformation("GetAllSalaries params: {fromDate}, {toDate}", fromDate, toDate);
+        if (fromDate.IsDateNotOlder(toDate))
+        {
+            throw new IncorrectDatesException(fromDate, toDate);
+        }
+        return _salaryStorageContract.GetList(fromDate, toDate) ?? throw new NullListException();
+    }
+
+    public List<SalaryDataModel> GetAllSalariesByPeriodByWorker(DateTime fromDate, DateTime toDate, string workerId)
+    {
+        if (fromDate.IsDateNotOlder(toDate))
+        {
+            throw new IncorrectDatesException(fromDate, toDate);
+        }
+        if (workerId.IsEmpty())
+        {
+            throw new ArgumentNullException(nameof(workerId));
+        }
+        if (!workerId.IsGuid())
+        {
+            throw new ValidationException("The value in the field workerId is not a unique identifier.");
+        }
+        _logger.LogInformation("GetAllSalaries params: {fromDate}, {toDate}, {workerId}", fromDate, toDate, workerId);
+        return _salaryStorageContract.GetList(fromDate, toDate, workerId) ?? throw new NullListException();
+    }
+
+    public void CalculateSalaryByMounth(DateTime date)
+    {
+        _logger.LogInformation("CalculateSalaryByMounth: {date}", date);
+        var startDate = new DateTime(date.Year, date.Month, 1);
+        var finishDate = new DateTime(date.Year, date.Month, DateTime.DaysInMonth(date.Year, date.Month));
+        var workers = _workerStorageContract.GetList() ?? throw new NullListException();
+        foreach (var worker in workers)
+        {
+            var sales = _saleStorageContract.GetList(startDate, finishDate, workerId: worker.Id)?.Sum(x => x.Sum) ??
+                throw new NullListException();
+            var post = _postStorageContract.GetElementById(worker.PostId) ??
+                throw new NullListException();
+            var salary = post.Salary + sales * 0.1;
+            _logger.LogDebug("The employee {workerId} was paid a salary of {salary}", worker.Id, salary);
+            _salaryStorageContract.AddElement(new SalaryDataModel(worker.Id, finishDate, salary));
+        }
+    }
+}

SPiluSZharuProject/SPiluSZharuBuisnessLogic/Implementations/SaleBuisnessLogicContract.cs

@@ -0,0 +1,116 @@
+using Microsoft.Extensions.Logging;
+using SPiluSZharuContracts.BuisnessLogicContracts;
+using SPiluSZharuContracts.DataModels;
+using SPiluSZharuContracts.Enums;
+using SPiluSZharuContracts.Exceptions;
+using SPiluSZharuContracts.Extensions;
+using SPiluSZharuContracts.StorageContracts;
+using System.Text.Json;
+
+namespace SPiluSZharuBuisnessLogic.Implementations;
+
+internal class SaleBuisnessLogicContract(ISaleStorageContract saleStorageContract, ILogger logger) : ISaleBuisnessLogicContract
+{
+    private readonly ILogger _logger = logger;
+    private readonly ISaleStorageContract _saleStorageContract = saleStorageContract;
+
+    public List<SaleDataModel> GetAllSalesByPeriod(DateTime fromDate, DateTime toDate)
+    {
+        _logger.LogInformation("GetAllSales params: {fromDate}, {toDate}", fromDate, toDate);
+        if (fromDate.IsDateNotOlder(toDate))
+        {
+            throw new IncorrectDatesException(fromDate, toDate);
+        }
+        return _saleStorageContract.GetList(fromDate, toDate) ?? throw new NullListException();
+    }
+
+    public List<SaleDataModel> GetAllSalesByWorkerByPeriod(string workerId, DateTime fromDate, DateTime toDate)
+    {
+        _logger.LogInformation("GetAllSales params: {workerId}, {fromDate}, {toDate}", workerId, fromDate, toDate);
+        if (fromDate.IsDateNotOlder(toDate))
+        {
+            throw new IncorrectDatesException(fromDate, toDate);
+        }
+        if (workerId.IsEmpty())
+        {
+            throw new ArgumentNullException(nameof(workerId));
+        }
+        if (!workerId.IsGuid())
+        {
+            throw new ValidationException("The value in the field workerId is not a unique identifier.");
+        }
+        return _saleStorageContract.GetList(fromDate, toDate, workerId: workerId) ?? throw new NullListException();
+    }
+
+    public List<SaleDataModel> GetAllSalesByRestaurantByPeriod(string restaurantId, DateTime fromDate, DateTime toDate)
+    {
+        _logger.LogInformation("GetAllSales params: {restaurantId}, {fromDate}, {toDate}", restaurantId, fromDate, toDate);
+        if (fromDate.IsDateNotOlder(toDate))
+        {
+            throw new IncorrectDatesException(fromDate, toDate);
+        }
+        if (restaurantId.IsEmpty())
+        {
+            throw new ArgumentNullException(nameof(restaurantId));
+        }
+        if (!restaurantId.IsGuid())
+        {
+            throw new ValidationException("The value in the field restaurantId is not a unique identifier.");
+        }
+        return _saleStorageContract.GetList(fromDate, toDate, restaurantId: restaurantId) ?? throw new NullListException();
+    }
+
+    public List<SaleDataModel> GetAllSalesByProductByPeriod(string productId, DateTime fromDate, DateTime toDate)
+    {
+        _logger.LogInformation("GetAllSales params: {productId}, {fromDate}, {toDate}", productId, fromDate, toDate);
+        if (fromDate.IsDateNotOlder(toDate))
+        {
+            throw new IncorrectDatesException(fromDate, toDate);
+        }
+        if (productId.IsEmpty())
+        {
+            throw new ArgumentNullException(nameof(productId));
+        }
+        if (!productId.IsGuid())
+        {
+            throw new ValidationException("The value in the field productId is not a unique identifier.");
+        }
+        return _saleStorageContract.GetList(fromDate, toDate, productId: productId) ?? throw new NullListException();
+    }
+
+    public SaleDataModel GetSaleByData(string data)
+    {
+        _logger.LogInformation("Get element by data: {data}", data);
+        if (data.IsEmpty())
+        {
+            throw new ArgumentNullException(nameof(data));
+        }
+        if (!data.IsGuid())
+        {
+            throw new ValidationException("Id is not a unique identifier");
+        }
+        return _saleStorageContract.GetElementById(data) ?? throw new ElementNotFoundException(data);
+    }
+
+    public void InsertSale(SaleDataModel saleDataModel)
+    {
+        _logger.LogInformation("New data: {json}", JsonSerializer.Serialize(saleDataModel));
+        ArgumentNullException.ThrowIfNull(saleDataModel);
+        saleDataModel.Validate();
+        _saleStorageContract.AddElement(saleDataModel);
+    }
+
+    public void CancelSale(string id)
+    {
+        _logger.LogInformation("Cancel by id: {id}", id);
+        if (id.IsEmpty())
+        {
+            throw new ArgumentNullException(nameof(id));
+        }
+        if (!id.IsGuid())
+        {
+            throw new ValidationException("Id is not a unique identifier");
+        }
+        _saleStorageContract.DelElement(id);
+    }
+}

SPiluSZharuProject/SPiluSZharuBuisnessLogic/Implementations/WorkerBuisnessLogicContract.cs

@@ -0,0 +1,104 @@
+using Microsoft.Extensions.Logging;
+using SPiluSZharuContracts.BuisnessLogicContracts;
+using SPiluSZharuContracts.DataModels;
+using SPiluSZharuContracts.Exceptions;
+using SPiluSZharuContracts.Extensions;
+using SPiluSZharuContracts.StorageContracts;
+using System.Text.Json;
+using System.Text.RegularExpressions;
+
+namespace SPiluSZharuBuisnessLogic.Implementations;
+
+internal class WorkerBuisnessLogicContract(IWorkerStorageContract workerStorageContract, ILogger logger) : IWorkerBuisnessLogicContract
+{
+    private readonly ILogger _logger = logger;
+    private readonly IWorkerStorageContract _workerStorageContract = workerStorageContract;
+
+    public List<WorkerDataModel> GetAllWorkers(bool onlyActive = true)
+    {
+        _logger.LogInformation("GetAllWorkers params: {onlyActive}", onlyActive);
+        return _workerStorageContract.GetList(onlyActive) ?? throw new NullListException();
+    }
+
+    public List<WorkerDataModel> GetAllWorkersByPost(string postId, bool onlyActive = true)
+    {
+        _logger.LogInformation("GetAllWorkers params: {postId}, {onlyActive},", postId, onlyActive);
+        if (postId.IsEmpty())
+        {
+            throw new ArgumentNullException(nameof(postId));
+        }
+        if (!postId.IsGuid())
+        {
+            throw new ValidationException("The value in the field postId is not a unique identifier.");
+        }
+        return _workerStorageContract.GetList(onlyActive, postId) ?? throw new NullListException();
+    }
+
+    public List<WorkerDataModel> GetAllWorkersByBirthDate(DateTime fromDate, DateTime toDate, bool onlyActive = true)
+    {
+        _logger.LogInformation("GetAllWorkers params: {onlyActive}, {fromDate}, {toDate}", onlyActive, fromDate, toDate);
+        if (fromDate.IsDateNotOlder(toDate))
+        {
+            throw new IncorrectDatesException(fromDate, toDate);
+        }
+        return _workerStorageContract.GetList(onlyActive, fromBirthDate: fromDate, toBirthDate: toDate) ?? throw new NullListException();
+    }
+
+    public List<WorkerDataModel> GetAllWorkersByEmploymentDate(DateTime fromDate, DateTime toDate, bool onlyActive = true)
+    {
+        _logger.LogInformation("GetAllWorkers params: {onlyActive}, {fromDate}, {toDate}", onlyActive, fromDate, toDate);
+        if (fromDate.IsDateNotOlder(toDate))
+        {
+            throw new IncorrectDatesException(fromDate, toDate);
+        }
+        return _workerStorageContract.GetList(onlyActive, fromEmploymentDate: fromDate, toEmploymentDate: toDate) ?? throw new NullListException();
+    }
+
+    public WorkerDataModel GetWorkerByData(string data)
+    {
+        _logger.LogInformation("Get element by data: {data}", data);
+        if (data.IsEmpty())
+        {
+            throw new ArgumentNullException(nameof(data));
+        }
+        if (data.IsGuid())
+        {
+            return _workerStorageContract.GetElementById(data) ?? throw new ElementNotFoundException(data);
+        }
+        if (Regex.IsMatch(data, @"^(8|\+7)(\s|\(|\-)?(\d{3})(\s|\)|\-)?(\d{3})(\s|\-)?(\d{2})(\s|\-)?(\d{2})$"))
+        {
+            return _workerStorageContract.GetElementByPhoneNumber(data) ?? throw new ElementNotFoundException(data);
+        }
+        return _workerStorageContract.GetElementByFIO(data) ?? throw new ElementNotFoundException(data);
+    }
+
+    public void InsertWorker(WorkerDataModel workerDataModel)
+    {
+        _logger.LogInformation("New data: {json}", JsonSerializer.Serialize(workerDataModel));
+        ArgumentNullException.ThrowIfNull(workerDataModel);
+        workerDataModel.Validate();
+        _workerStorageContract.AddElement(workerDataModel);
+    }
+
+    public void UpdateWorker(WorkerDataModel workerDataModel)
+    {
+        _logger.LogInformation("Update data: {json}", JsonSerializer.Serialize(workerDataModel));
+        ArgumentNullException.ThrowIfNull(workerDataModel);
+        workerDataModel.Validate();
+        _workerStorageContract.UpdElement(workerDataModel);
+    }
+
+    public void DeleteWorker(string id)
+    {
+        _logger.LogInformation("Delete by id: {id}", id);
+        if (id.IsEmpty())
+        {
+            throw new ArgumentNullException(nameof(id));
+        }
+        if (!id.IsGuid())
+        {
+            throw new ValidationException("Id is not a unique identifier");
+        }
+        _workerStorageContract.DelElement(id);
+    }
+}

SPiluSZharuProject/SPiluSZharuBuisnessLogic/SPiluSZharuBuisnessLogic.csproj

@@ -0,0 +1,23 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net9.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+	<ItemGroup>
+		<InternalsVisibleTo Include="SPiluSZharuTests" />
+		<InternalsVisibleTo Include="DynamicProxyGenAssembly2" />
+	</ItemGroup>
+
+	<ItemGroup>
+	  <PackageReference Include="Microsoft.Extensions.Logging" Version="9.0.2" />
+	  <PackageReference Include="Moq" Version="4.20.72" />
+	</ItemGroup>
+
+	<ItemGroup>
+    <ProjectReference Include="..\SPiluSZharuContracts\SPiluSZharuContracts.csproj" />
+  </ItemGroup>
+
+</Project>

SPiluSZharuProject/SPiluSZharuContracts/BuisnessLogicContracts/IPostBuisnessLogicContract.cs

@@ -0,0 +1,20 @@
+using SPiluSZharuContracts.DataModels;
+
+namespace SPiluSZharuContracts.BuisnessLogicContracts;
+
+public interface IPostBuisnessLogicContract
+{
+    List<PostDataModel> GetAllPosts(bool onlyActive);
+
+    List<PostDataModel> GetAllDataOfPost(string postId);
+
+    PostDataModel GetPostByData(string data);
+
+    void InsertPost(PostDataModel postDataModel);
+
+    void UpdatePost(PostDataModel postDataModel);
+
+    void DeletePost(string id);
+
+    void RestorePost(string id);
+}

SPiluSZharuProject/SPiluSZharuContracts/BuisnessLogicContracts/IProductBuisnessLogicContract.cs

@@ -0,0 +1,18 @@
+using SPiluSZharuContracts.DataModels;
+
+namespace SPiluSZharuContracts.BuisnessLogicContracts;
+
+public interface IProductBuisnessLogicContract
+{
+    List<ProductDataModel> GetAllProducts(bool onlyActive = true);
+
+    List<ProductHistoryDataModel> GetProductHistoryByProduct(string productId);
+
+    ProductDataModel GetProductByData(string data);
+
+    void InsertProduct(ProductDataModel productDataModel);
+
+    void UpdateProduct(ProductDataModel productDataModel);
+
+    void DeleteProduct(string id);
+}

SPiluSZharuProject/SPiluSZharuContracts/BuisnessLogicContracts/IRestaurantBuisnessLogicContract.cs

@@ -0,0 +1,16 @@
+using SPiluSZharuContracts.DataModels;
+
+namespace SPiluSZharuContracts.BuisnessLogicContracts;
+
+public interface IRestaurantBuisnessLogicContract
+{
+    List<RestaurantDataModel> GetAllRestaurants();
+
+    RestaurantDataModel GetRestaurantByData(string data);
+
+    void InsertRestaurant(RestaurantDataModel restaurantDataModel);
+
+    void UpdateRestaurant(RestaurantDataModel restaurantDataModel);
+
+    void DeleteRestaurant(string id);
+}

SPiluSZharuProject/SPiluSZharuContracts/BuisnessLogicContracts/ISalaryBuisnessLogicContract.cs

@@ -0,0 +1,12 @@
+using SPiluSZharuContracts.DataModels;
+
+namespace SPiluSZharuContracts.BuisnessLogicContracts;
+
+public interface ISalaryBuisnessLogicContract
+{
+    List<SalaryDataModel> GetAllSalariesByPeriod(DateTime fromDate, DateTime toDate);
+
+    List<SalaryDataModel> GetAllSalariesByPeriodByWorker(DateTime fromDate, DateTime toDate, string workerId);
+
+    void CalculateSalaryByMounth(DateTime date);
+}

SPiluSZharuProject/SPiluSZharuContracts/BuisnessLogicContracts/ISaleBuisnessLogicContract.cs

@@ -0,0 +1,20 @@
+using SPiluSZharuContracts.DataModels;
+
+namespace SPiluSZharuContracts.BuisnessLogicContracts;
+
+public interface ISaleBuisnessLogicContract
+{
+    List<SaleDataModel> GetAllSalesByPeriod(DateTime fromDate, DateTime toDate);
+
+    List<SaleDataModel> GetAllSalesByWorkerByPeriod(string workerId, DateTime fromDate, DateTime toDate);
+
+    List<SaleDataModel> GetAllSalesByRestaurantByPeriod(string restaurantId, DateTime fromDate, DateTime toDate);
+
+    List<SaleDataModel> GetAllSalesByProductByPeriod(string productId, DateTime fromDate, DateTime toDate);
+
+    SaleDataModel GetSaleByData(string data);
+
+    void InsertSale(SaleDataModel saleDataModel);
+
+    void CancelSale(string id);
+}

SPiluSZharuProject/SPiluSZharuContracts/BuisnessLogicContracts/IWorkerBuisnessLogicContract.cs

@@ -0,0 +1,22 @@
+using SPiluSZharuContracts.DataModels;
+
+namespace SPiluSZharuContracts.BuisnessLogicContracts;
+
+public interface IWorkerBuisnessLogicContract
+{
+    List<WorkerDataModel> GetAllWorkers(bool onlyActive = true);
+
+    List<WorkerDataModel> GetAllWorkersByPost(string postId, bool onlyActive = true);
+
+    List<WorkerDataModel> GetAllWorkersByBirthDate(DateTime fromDate, DateTime toDate, bool onlyActive = true);
+
+    List<WorkerDataModel> GetAllWorkersByEmploymentDate(DateTime fromDate, DateTime toDate, bool onlyActive = true);
+
+    WorkerDataModel GetWorkerByData(string data);
+
+    void InsertWorker(WorkerDataModel workerDataModel);
+
+    void UpdateWorker(WorkerDataModel workerDataModel);
+
+    void DeleteWorker(string id);
+}

SPiluSZharuProject/SPiluSZharuContracts/DataModels/PostDataModel.cs

@@ -5,11 +5,9 @@ using SPiluSZharuContracts.Infrastructure;
 
 namespace SPiluSZharuContracts.DataModels;
 
-public class PostDataModel(string id, string postId, string postName, PostType postType, double salary, bool isActual, DateTime changeDate) : IValidation
+public class PostDataModel(string postId, string postName, PostType postType, double salary, bool isActual, DateTime changeDate) : IValidation
 {
-    public string Id { get; private set; } = id;
-
-    public string PostId { get; private set; } = postId;
+    public string Id { get; private set; } = postId;
 
     public string PostName { get; private set; } = postName;
 
@@ -29,12 +27,6 @@ public class PostDataModel(string id, string postId, string postName, PostType p
         if (!Id.IsGuid())
             throw new ValidationException("The value in the field Id is not a unique identifier");
 
-        if (PostId.IsEmpty())
-            throw new ValidationException("Field PostId is empty");
-
-        if (!PostId.IsGuid())
-            throw new ValidationException("The value in the field PostId is not a unique identifier");
-
         if (PostName.IsEmpty())
             throw new ValidationException("Field PostName is empty");
 

SPiluSZharuProject/SPiluSZharuContracts/DataModels/SaleDataModel.cs

@@ -4,7 +4,7 @@ using SPiluSZharuContracts.Infrastructure;
 
 namespace SPiluSZharuContracts.DataModels;
 
-public class SaleDataModel(string id, string workerId, string? restaurantId, double sum, bool isCancel, List<SaleProductDataModel> products) : IValidation
+public class SaleDataModel(string id, string workerId, string? restaurantId, double sum, bool isCancel, List<SaleProductDataModel> saleProducts) : IValidation
 {
     public string Id { get; private set; } = id;
 
@@ -18,7 +18,7 @@ public class SaleDataModel(string id, string workerId, string? restaurantId, dou
 
     public bool IsCancel { get; private set; } = isCancel;
 
-    public List<SaleProductDataModel> Products { get; private set; } = products;
+    public List<SaleProductDataModel> Products { get; private set; } = saleProducts;
 
     public void Validate()
     {

SPiluSZharuProject/SPiluSZharuContracts/Exceptions/ElementDeletedException.cs

@@ -0,0 +1,6 @@
+namespace SPiluSZharuContracts.Exceptions;
+
+public class ElementDeletedException : Exception
+{
+    public ElementDeletedException(string id) : base($"Cannot modify a deleted item (id: {id})") { }
+}

SPiluSZharuProject/SPiluSZharuContracts/Exceptions/ElementExistsException.cs

@@ -0,0 +1,14 @@
+namespace SPiluSZharuContracts.Exceptions;
+
+public class ElementExistsException : Exception
+{
+    public string ParamName { get; private set; }
+
+    public string ParamValue { get; private set; }
+
+    public ElementExistsException(string paramName, string paramValue) : base($"There is already an element with value{paramValue} of parameter {paramName}")
+    {
+        ParamName = paramName;
+        ParamValue = paramValue;
+    }
+}

SPiluSZharuProject/SPiluSZharuContracts/Exceptions/ElementNotFoundException.cs

@@ -0,0 +1,11 @@
+namespace SPiluSZharuContracts.Exceptions;
+
+public class ElementNotFoundException : Exception
+{
+    public string Value { get; private set; }
+
+    public ElementNotFoundException(string value) : base($"Element not found at value = {value}")
+    {
+        Value = value;
+    }
+}

SPiluSZharuProject/SPiluSZharuContracts/Exceptions/IncorrectDatesException.cs

@@ -0,0 +1,6 @@
+namespace SPiluSZharuContracts.Exceptions;
+
+public class IncorrectDatesException : Exception
+{
+    public IncorrectDatesException(DateTime start, DateTime end) : base($"The end date must be later than the start date.. StartDate: {start:dd.MM.YYYY}. EndDate: {end:dd.MM.YYYY}") { }
+}

SPiluSZharuProject/SPiluSZharuContracts/Exceptions/NullListException.cs

@@ -0,0 +1,6 @@
+namespace SPiluSZharuContracts.Exceptions;
+
+public class NullListException : Exception
+{
+    public NullListException() : base("The returned list is null") { }
+}

SPiluSZharuProject/SPiluSZharuContracts/Exceptions/StorageException.cs

@@ -0,0 +1,6 @@
+namespace SPiluSZharuContracts.Exceptions;
+
+public class StorageException : Exception
+{
+    public StorageException(Exception ex) : base($"Error while working in storage: {ex.Message}", ex) { }
+}

SPiluSZharuProject/SPiluSZharuContracts/Extensions/DateTimeExtensions.cs

@@ -0,0 +1,9 @@
+namespace SPiluSZharuContracts.Extensions;
+
+public static class DateTimeExtensions
+{
+    public static bool IsDateNotOlder(this DateTime date, DateTime olderDate)
+    {
+        return date >= olderDate;
+    }
+}

SPiluSZharuProject/SPiluSZharuContracts/Infrastructure/IConfigurationDatabase.cs

@@ -0,0 +1,6 @@
+namespace SPiluSZharuContratcs.Infrastructure;
+
+public interface IConfigurationDatabase
+{
+    string ConnectionString { get; }
+}

SPiluSZharuProject/SPiluSZharuContracts/SPiluSZharuContracts.csproj

@@ -6,4 +6,9 @@
     <Nullable>enable</Nullable>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Extensions.Logging" Version="9.0.2" />
+    <PackageReference Include="Moq" Version="4.20.72" />
+  </ItemGroup>
+
 </Project>

SPiluSZharuProject/SPiluSZharuContracts/StorageContracts/IPostStorageContract.cs

@@ -0,0 +1,22 @@
+using SPiluSZharuContracts.DataModels;
+
+namespace SPiluSZharuContracts.StorageContracts;
+
+public interface IPostStorageContract
+{
+    List<PostDataModel> GetList(bool onlyActual = true);
+
+    List<PostDataModel> GetPostWithHistory(string postId);
+
+    PostDataModel? GetElementById(string id);
+
+    PostDataModel? GetElementByName(string name);
+
+    void AddElement(PostDataModel postDataModel);
+
+    void UpdElement(PostDataModel postDataModel);
+
+    void DelElement(string id);
+
+    void ResElement(string id);
+}

SPiluSZharuProject/SPiluSZharuContracts/StorageContracts/IProductStorageContract.cs

@@ -0,0 +1,20 @@
+using SPiluSZharuContracts.DataModels;
+
+namespace SPiluSZharuContracts.StorageContracts;
+
+public interface IProductStorageContract
+{
+    List<ProductDataModel> GetList(bool onlyActive = true);
+
+    List<ProductHistoryDataModel> GetHistoryByProductId(string productId);
+
+    ProductDataModel? GetElementById(string id);
+
+    ProductDataModel? GetElementByName(string name);
+
+    void AddElement(ProductDataModel productDataModel);
+
+    void UpdElement(ProductDataModel productDataModel);
+
+    void DelElement(string id);
+}

SPiluSZharuProject/SPiluSZharuContracts/StorageContracts/IRestaurantStorageContract.cs

@@ -0,0 +1,20 @@
+using SPiluSZharuContracts.DataModels;
+
+namespace SPiluSZharuContracts.StorageContracts;
+
+public interface IRestaurantStorageContract
+{
+	List<RestaurantDataModel> GetList();
+
+    RestaurantDataModel? GetElementById(string id);
+
+    RestaurantDataModel? GetElementByName(string name);
+
+    RestaurantDataModel? GetElementByOldName(string name);
+
+	void AddElement(RestaurantDataModel restaurantDataModel);
+
+	void UpdElement(RestaurantDataModel restaurantDataModel);
+
+	void DelElement(string id);
+}

SPiluSZharuProject/SPiluSZharuContracts/StorageContracts/ISalaryStorageContract.cs

@@ -0,0 +1,10 @@
+using SPiluSZharuContracts.DataModels;
+
+namespace SPiluSZharuContracts.StorageContracts;
+
+public interface ISalaryStorageContract
+{
+    List<SalaryDataModel> GetList(DateTime startDate, DateTime endDate, string? workerId = null);
+
+    void AddElement(SalaryDataModel salaryDataModel);
+}

SPiluSZharuProject/SPiluSZharuContracts/StorageContracts/ISaleStorageContract.cs

@@ -0,0 +1,15 @@
+using SPiluSZharuContracts.DataModels;
+
+namespace SPiluSZharuContracts.StorageContracts;
+
+public interface ISaleStorageContract
+{
+    List<SaleDataModel> GetList(DateTime? startDate = null, DateTime? endDate = null, 
+        string? workerId = null, string? restaurantId = null, string? productId = null);
+
+    SaleDataModel? GetElementById(string id);
+
+    void AddElement(SaleDataModel saleDataModel);
+
+    void DelElement(string id);
+}

SPiluSZharuProject/SPiluSZharuContracts/StorageContracts/IWorkerStorageContract.cs

@@ -0,0 +1,21 @@
+using SPiluSZharuContracts.DataModels;
+
+namespace SPiluSZharuContracts.StorageContracts;
+
+public interface IWorkerStorageContract
+{
+    List<WorkerDataModel> GetList(bool onlyActive = true, string? postId = null, DateTime? fromBirthDate = null, 
+        DateTime? toBirthDate = null, DateTime? fromEmploymentDate = null, DateTime? toEmploymentDate = null);
+
+    WorkerDataModel? GetElementById(string id);
+
+    WorkerDataModel? GetElementByFIO(string fio);
+
+    WorkerDataModel? GetElementByPhoneNumber(string phoneNumber);
+
+    void AddElement(WorkerDataModel workerDataModel);
+
+    void UpdElement(WorkerDataModel workerDataModel);
+
+    void DelElement(string id);
+}

SPiluSZharuProject/SPiluSZharuDatabase/Implementations/PostStorageContract.cs

@@ -0,0 +1,190 @@
+using AutoMapper;
+using Microsoft.EntityFrameworkCore;
+using Npgsql;
+using SPiluSZharuContracts.DataModels;
+using SPiluSZharuContracts.Exceptions;
+using SPiluSZharuContracts.StorageContracts;
+using SPiluSZharuDatabase.Models;
+
+namespace SPiluSZharuDatabase.Implementations;
+
+internal class PostStorageContract : IPostStorageContract
+{
+    private readonly SPiluSZharuDbContext _dbContext;
+    private readonly Mapper _mapper;
+
+    public PostStorageContract(SPiluSZharuDbContext dbContext)
+    {
+        _dbContext = dbContext;
+        var config = new MapperConfiguration(cfg =>
+        {
+            cfg.CreateMap<Post, PostDataModel>()
+                .ForMember(x => x.Id, x => x.MapFrom(src => src.PostId));
+            cfg.CreateMap<PostDataModel, Post>()
+                .ForMember(x => x.Id, x => x.Ignore())
+                .ForMember(x => x.PostId, x => x.MapFrom(src => src.Id))
+                .ForMember(x => x.IsActual, x => x.MapFrom(src => true))
+                .ForMember(x => x.ChangeDate, x => x.MapFrom(src => DateTime.UtcNow));
+        });
+        _mapper = new Mapper(config);
+    }
+
+    public List<PostDataModel> GetList(bool onlyActual = true)
+    {
+        try
+        {
+            var query = _dbContext.Posts.AsQueryable();
+            if (onlyActual)
+            {
+                query = query.Where(x => x.IsActual);
+            }
+            return [.. query.Select(x => _mapper.Map<PostDataModel>(x))];
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public List<PostDataModel> GetPostWithHistory(string postId)
+    {
+        try
+        {
+            return [.. _dbContext.Posts.Where(x => x.PostId == postId).Select(x => _mapper.Map<PostDataModel>(x))];
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public PostDataModel? GetElementById(string id)
+    {
+        try
+        {
+            return _mapper.Map<PostDataModel>(_dbContext.Posts.FirstOrDefault(x => x.PostId == id && x.IsActual));
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public PostDataModel? GetElementByName(string name)
+    {
+        try
+        {
+            return _mapper.Map<PostDataModel>(_dbContext.Posts.FirstOrDefault(x => x.PostName == name && x.IsActual));
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public void AddElement(PostDataModel postDataModel)
+    {
+        try
+        {
+            _dbContext.Posts.Add(_mapper.Map<Post>(postDataModel));
+            _dbContext.SaveChanges();
+        }
+        catch (DbUpdateException ex) when (ex.InnerException is PostgresException { ConstraintName: "IX_Posts_PostName_IsActual" })
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new ElementExistsException("PostName", postDataModel.PostName);
+        }
+        catch (DbUpdateException ex) when (ex.InnerException is PostgresException { ConstraintName: "IX_Posts_PostId_IsActual" })
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new ElementExistsException("PostId", postDataModel.Id);
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public void UpdElement(PostDataModel postDataModel)
+    {
+        try
+        {
+            var transaction = _dbContext.Database.BeginTransaction();
+            try
+            {
+                var element = GetPostById(postDataModel.Id) ?? throw new ElementNotFoundException(postDataModel.Id);
+                if (!element.IsActual)
+                {
+                    throw new ElementDeletedException(postDataModel.Id);
+                }
+                element.IsActual = false;
+                _dbContext.SaveChanges();
+                var newElement = _mapper.Map<Post>(postDataModel);
+                _dbContext.Posts.Add(newElement);
+                _dbContext.SaveChanges();
+                transaction.Commit();
+            }
+            catch
+            {
+                transaction.Rollback();
+                throw;
+            }
+        }
+        catch (DbUpdateException ex) when (ex.InnerException is PostgresException { ConstraintName: "IX_Posts_PostName_IsActual" })
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new ElementExistsException("PostName", postDataModel.PostName);
+        }
+        catch (Exception ex) when (ex is ElementDeletedException || ex is ElementNotFoundException)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw;
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public void DelElement(string id)
+    {
+        try
+        {
+            var element = GetPostById(id) ?? throw new ElementNotFoundException(id);
+            if (!element.IsActual)
+            {
+                throw new ElementDeletedException(id);
+            }
+            element.IsActual = false;
+            _dbContext.SaveChanges();
+        }
+        catch
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw;
+        }
+    }
+
+    public void ResElement(string id)
+    {
+        try
+        {
+            var element = GetPostById(id) ?? throw new ElementNotFoundException(id);
+            element.IsActual = true;
+            _dbContext.SaveChanges();
+        }
+        catch
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw;
+        }
+    }
+
+    private Post? GetPostById(string id) => _dbContext.Posts.Where(x => x.PostId == id).OrderByDescending(x => x.ChangeDate).FirstOrDefault();
+}

SPiluSZharuProject/SPiluSZharuDatabase/Implementations/ProductStorageContract.cs

@@ -0,0 +1,171 @@
+using AutoMapper;
+using Microsoft.EntityFrameworkCore;
+using Npgsql;
+using SPiluSZharuContracts.DataModels;
+using SPiluSZharuContracts.Exceptions;
+using SPiluSZharuContracts.StorageContracts;
+using SPiluSZharuDatabase.Models;
+
+namespace SPiluSZharuDatabase.Implementations;
+
+internal class ProductStorageContract : IProductStorageContract
+{
+    private readonly SPiluSZharuDbContext _dbContext;
+    private readonly Mapper _mapper;
+
+    public ProductStorageContract(SPiluSZharuDbContext dbContext)
+    {
+        _dbContext = dbContext;
+        var config = new MapperConfiguration(cfg =>
+        {
+            cfg.CreateMap<Product, ProductDataModel>();
+            cfg.CreateMap<ProductDataModel, Product>()
+                .ForMember(x => x.IsDeleted, x => x.MapFrom(src => false));
+            cfg.CreateMap<ProductHistory, ProductHistoryDataModel>();
+        });
+        _mapper = new Mapper(config);
+    }
+
+    public List<ProductDataModel> GetList(bool onlyActive = true)
+    {
+        try
+        {
+            var query = _dbContext.Products.AsQueryable();
+            if (onlyActive)
+            {
+                query = query.Where(x => !x.IsDeleted);
+            }
+            return [.. query.Select(x => _mapper.Map<ProductDataModel>(x))];
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public List<ProductHistoryDataModel> GetHistoryByProductId(string productId)
+    {
+        try
+        {
+            return [.. _dbContext.ProductHistories.Where(x => x.ProductId == productId).OrderByDescending(x => x.ChangeDate).Select(x => _mapper.Map<ProductHistoryDataModel>(x))];
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public ProductDataModel? GetElementById(string id)
+    {
+        try
+        {
+            return _mapper.Map<ProductDataModel>(GetProductById(id));
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public ProductDataModel? GetElementByName(string name)
+    {
+        try
+        {
+            return _mapper.Map<ProductDataModel>(_dbContext.Products.FirstOrDefault(x => x.ProductName == name && !x.IsDeleted));
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public void AddElement(ProductDataModel productDataModel)
+    {
+        try
+        {
+            _dbContext.Products.Add(_mapper.Map<Product>(productDataModel));
+            _dbContext.SaveChanges();
+        }
+        catch (InvalidOperationException ex) when (ex.TargetSite?.Name == "ThrowIdentityConflict")
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new ElementExistsException("Id", productDataModel.Id);
+        }
+        catch (DbUpdateException ex) when (ex.InnerException is PostgresException { ConstraintName: "IX_Products_ProductName_IsDeleted" })
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new ElementExistsException("ProductName", productDataModel.ProductName);
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public void UpdElement(ProductDataModel productDataModel)
+    {
+        try
+        {
+            var transaction = _dbContext.Database.BeginTransaction();
+            try
+            {
+                var element = GetProductById(productDataModel.Id) ?? throw new ElementNotFoundException(productDataModel.Id);
+                if (element.Price != productDataModel.Price)
+                {
+                    _dbContext.ProductHistories.Add(new ProductHistory() { ProductId = element.Id, OldPrice = element.Price });
+                    _dbContext.SaveChanges();
+                }
+                _dbContext.Products.Update(_mapper.Map(productDataModel, element));
+                _dbContext.SaveChanges();
+                transaction.Commit();
+            }
+            catch
+            {
+                transaction.Rollback();
+                throw;
+            }
+        }
+        catch (DbUpdateException ex) when (ex.InnerException is PostgresException { ConstraintName: "IX_Products_ProductName_IsDeleted" })
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new ElementExistsException("ProductName", productDataModel.ProductName);
+        }
+        catch (Exception ex) when (ex is ElementDeletedException || ex is ElementNotFoundException)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw;
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public void DelElement(string id)
+    {
+        try
+        {
+            var element = GetProductById(id) ?? throw new ElementNotFoundException(id);
+            element.IsDeleted = true;
+            _dbContext.SaveChanges();
+        }
+        catch (ElementNotFoundException ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw;
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    private Product? GetProductById(string id) => _dbContext.Products.FirstOrDefault(x => x.Id == id && !x.IsDeleted);
+}

SPiluSZharuProject/SPiluSZharuDatabase/Implementations/RestaurantStorageContract.cs

@@ -0,0 +1,155 @@
+using AutoMapper;
+using Microsoft.EntityFrameworkCore;
+using Npgsql;
+using SPiluSZharuContracts.DataModels;
+using SPiluSZharuContracts.Exceptions;
+using SPiluSZharuContracts.StorageContracts;
+using SPiluSZharuDatabase.Models;
+
+namespace SPiluSZharuDatabase.Implementations;
+
+internal class RestaurantStorageContract : IRestaurantStorageContract
+{
+    private readonly SPiluSZharuDbContext _dbContext;
+    private readonly Mapper _mapper;
+
+    public RestaurantStorageContract(SPiluSZharuDbContext dbContext)
+    {
+        _dbContext = dbContext;
+        var config = new MapperConfiguration(cfg =>
+        {
+            cfg.AddMaps(typeof(SPiluSZharuDbContext).Assembly);
+        });
+        _mapper = new Mapper(config);
+    }
+
+    public List<RestaurantDataModel> GetList()
+    {
+        try
+        {
+            return [.. _dbContext.Restaurants.Select(x => _mapper.Map<RestaurantDataModel>(x))];
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public RestaurantDataModel? GetElementById(string id)
+    {
+        try
+        {
+            return _mapper.Map<RestaurantDataModel>(GetRestaurantById(id));
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public RestaurantDataModel? GetElementByName(string name)
+    {
+        try
+        {
+            return _mapper.Map<RestaurantDataModel>(_dbContext.Restaurants.FirstOrDefault(x => x.RestaurantName == name));
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public RestaurantDataModel? GetElementByOldName(string name)
+    {
+        try
+        {
+            return _mapper.Map<RestaurantDataModel>(_dbContext.Restaurants.FirstOrDefault(x => x.PrevRestaurantName == name ||
+                x.PrevPrevRestaurantName == name));
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public void AddElement(RestaurantDataModel RestaurantDataModel)
+    {
+        try
+        {
+            _dbContext.Restaurants.Add(_mapper.Map<Restaurant>(RestaurantDataModel));
+            _dbContext.SaveChanges();
+        }
+        catch (InvalidOperationException ex) when (ex.TargetSite?.Name == "ThrowIdentityConflict")
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new ElementExistsException("Id", RestaurantDataModel.Id);
+        }
+        catch (DbUpdateException ex) when (ex.InnerException is PostgresException { ConstraintName: "IX_Restaurants_RestaurantName" })
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new ElementExistsException("RestaurantName", RestaurantDataModel.RestaurantName);
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public void UpdElement(RestaurantDataModel RestaurantDataModel)
+    {
+        try
+        {
+            var element = GetRestaurantById(RestaurantDataModel.Id) ?? throw new ElementNotFoundException(RestaurantDataModel.Id);
+            if (element.RestaurantName != RestaurantDataModel.RestaurantName)
+            {
+                element.PrevPrevRestaurantName = element.PrevRestaurantName;
+                element.PrevRestaurantName = element.RestaurantName;
+                element.RestaurantName = RestaurantDataModel.RestaurantName;
+            }
+            _dbContext.Restaurants.Update(element);
+            _dbContext.SaveChanges();
+        }
+        catch (ElementNotFoundException)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw;
+        }
+        catch (DbUpdateException ex) when (ex.InnerException is PostgresException { ConstraintName: "IX_Restaurants_RestaurantName" })
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new ElementExistsException("RestaurantName", RestaurantDataModel.RestaurantName);
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public void DelElement(string id)
+    {
+        try
+        {
+            var element = GetRestaurantById(id) ?? throw new ElementNotFoundException(id);
+            _dbContext.Restaurants.Remove(element);
+            _dbContext.SaveChanges();
+        }
+        catch (ElementNotFoundException)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw;
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    private Restaurant? GetRestaurantById(string id) => _dbContext.Restaurants.FirstOrDefault(x => x.Id == id);
+}

SPiluSZharuProject/SPiluSZharuDatabase/Implementations/SalaryStorageContract.cs

@@ -0,0 +1,57 @@
+using AutoMapper;
+using SPiluSZharuContracts.DataModels;
+using SPiluSZharuContracts.Exceptions;
+using SPiluSZharuContracts.StorageContracts;
+using SPiluSZharuDatabase.Models;
+
+namespace SPiluSZharuDatabase.Implementations;
+
+internal class SalaryStorageContract : ISalaryStorageContract
+{
+    private readonly SPiluSZharuDbContext _dbContext;
+    private readonly Mapper _mapper;
+
+    public SalaryStorageContract(SPiluSZharuDbContext dbContext)
+    {
+        _dbContext = dbContext;
+        var config = new MapperConfiguration(cfg =>
+        {
+            cfg.CreateMap<Salary, SalaryDataModel>();
+            cfg.CreateMap<SalaryDataModel, Salary>()
+                .ForMember(dest => dest.WorkerSalary, opt => opt.MapFrom(src => src.Salary));
+        });
+        _mapper = new Mapper(config);
+    }
+
+    public List<SalaryDataModel> GetList(DateTime startDate, DateTime endDate, string? workerId = null)
+    {
+        try
+        {
+            var query = _dbContext.Salaries.Where(x => x.SalaryDate >= startDate && x.SalaryDate <= endDate);
+            if (workerId is not null)
+            {
+                query = query.Where(x => x.WorkerId == workerId);
+            }
+            return [.. query.Select(x => _mapper.Map<SalaryDataModel>(x))];
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public void AddElement(SalaryDataModel salaryDataModel)
+    {
+        try
+        {
+            _dbContext.Salaries.Add(_mapper.Map<Salary>(salaryDataModel));
+            _dbContext.SaveChanges();
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+}

SPiluSZharuProject/SPiluSZharuDatabase/Implementations/SaleStorageContract.cs

@@ -0,0 +1,112 @@
+using AutoMapper;
+using Microsoft.EntityFrameworkCore;
+using SPiluSZharuContracts.DataModels;
+using SPiluSZharuContracts.Exceptions;
+using SPiluSZharuContracts.StorageContracts;
+using SPiluSZharuDatabase.Models;
+
+namespace SPiluSZharuDatabase.Implementations;
+
+internal class SaleStorageContract : ISaleStorageContract
+{
+    private readonly SPiluSZharuDbContext _dbContext;
+    private readonly Mapper _mapper;
+
+    public SaleStorageContract(SPiluSZharuDbContext dbContext)
+    {
+        _dbContext = dbContext;
+        var config = new MapperConfiguration(cfg =>
+        {
+            cfg.CreateMap<SaleProduct, SaleProductDataModel>();
+            cfg.CreateMap<SaleProductDataModel, SaleProduct>();
+            cfg.CreateMap<Sale, SaleDataModel>();
+            cfg.CreateMap<SaleDataModel, Sale>()
+                .ForMember(x => x.IsCancel, x => x.MapFrom(src => false))
+                .ForMember(x => x.SaleProducts, x => x.MapFrom(src => src.Products));
+        });
+        _mapper = new Mapper(config);
+    }
+
+    public List<SaleDataModel> GetList(DateTime? startDate = null, DateTime? endDate = null, string? workerId = null, string? restaurantId = null, string? productId = null)
+    {
+        try
+        {
+            var query = _dbContext.Sales.Include(x => x.SaleProducts).AsQueryable();
+            if (startDate is not null && endDate is not null)
+            {
+                query = query.Where(x => x.SaleDate >= startDate && x.SaleDate < endDate);
+            }
+            if (workerId is not null)
+            {
+                query = query.Where(x => x.WorkerId == workerId);
+            }
+            if (restaurantId is not null)
+            {
+                query = query.Where(x => x.RestaurantId == restaurantId);
+            }
+            if (productId is not null)
+            {
+                query = query.Where(x => x.SaleProducts!.Any(y => y.ProductId == productId));
+            }
+            return [.. query.Select(x => _mapper.Map<SaleDataModel>(x))];
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public SaleDataModel? GetElementById(string id)
+    {
+        try
+        {
+            return _mapper.Map<SaleDataModel>(GetSaleById(id));
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public void AddElement(SaleDataModel saleDataModel)
+    {
+        try
+        {
+            _dbContext.Sales.Add(_mapper.Map<Sale>(saleDataModel));
+            _dbContext.SaveChanges();
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public void DelElement(string id)
+    {
+        try
+        {
+            var element = GetSaleById(id) ?? throw new ElementNotFoundException(id);
+            if (element.IsCancel)
+            {
+                throw new ElementDeletedException(id);
+            }
+            element.IsCancel = true;
+            _dbContext.SaveChanges();
+        }
+        catch (Exception ex) when (ex is ElementDeletedException || ex is ElementNotFoundException)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw;
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    private Sale? GetSaleById(string id) => _dbContext.Sales.FirstOrDefault(x => x.Id == id);
+}

SPiluSZharuProject/SPiluSZharuDatabase/Implementations/WorkerStorageContract.cs

@@ -0,0 +1,153 @@
+using AutoMapper;
+using SPiluSZharuContracts.DataModels;
+using SPiluSZharuContracts.Exceptions;
+using SPiluSZharuContracts.StorageContracts;
+using SPiluSZharuDatabase.Models;
+
+namespace SPiluSZharuDatabase.Implementations;
+
+internal class WorkerStorageContract : IWorkerStorageContract
+{
+    private readonly SPiluSZharuDbContext _dbContext;
+    private readonly Mapper _mapper;
+
+    public WorkerStorageContract(SPiluSZharuDbContext dbContext)
+    {
+        _dbContext = dbContext;
+        var config = new MapperConfiguration(cfg =>
+        {
+            cfg.AddMaps(typeof(SPiluSZharuDbContext).Assembly);
+        });
+        _mapper = new Mapper(config);
+    }
+
+    public List<WorkerDataModel> GetList(bool onlyActive = true, string? postId = null, DateTime? fromBirthDate = null, DateTime? toBirthDate = null, DateTime? fromEmploymentDate = null, DateTime? toEmploymentDate = null)
+    {
+        try
+        {
+            var query = _dbContext.Workers.AsQueryable();
+            if (onlyActive)
+            {
+                query = query.Where(x => !x.IsDeleted);
+            }
+            if (postId is not null)
+            {
+                query = query.Where(x => x.PostId == postId);
+            }
+            if (fromBirthDate is not null && toBirthDate is not null)
+            {
+                query = query.Where(x => x.BirthDate >= fromBirthDate && x.BirthDate <= toBirthDate);
+            }
+            if (fromEmploymentDate is not null && toEmploymentDate is not null)
+            {
+                query = query.Where(x => x.EmploymentDate >= fromEmploymentDate && x.EmploymentDate <= toEmploymentDate);
+            }
+            return [.. query.Select(x => _mapper.Map<WorkerDataModel>(x))];
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public WorkerDataModel? GetElementById(string id)
+    {
+        try
+        {
+            return _mapper.Map<WorkerDataModel>(GetWorkerById(id));
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public WorkerDataModel? GetElementByFIO(string fio)
+    {
+        try
+        {
+            return _mapper.Map<WorkerDataModel>(_dbContext.Workers.FirstOrDefault(x => x.FIO == fio));
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public WorkerDataModel? GetElementByPhoneNumber(string phoneNumber)
+    {
+        try
+        {
+            return _mapper.Map<WorkerDataModel>(_dbContext.Workers.FirstOrDefault(x => x.PhoneNumber == phoneNumber));
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public void AddElement(WorkerDataModel workerDataModel)
+    {
+        try
+        {
+            _dbContext.Workers.Add(_mapper.Map<Worker>(workerDataModel));
+            _dbContext.SaveChanges();
+        }
+        catch (InvalidOperationException ex) when (ex.TargetSite?.Name == "ThrowIdentityConflict")
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new ElementExistsException("Id", workerDataModel.Id);
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public void UpdElement(WorkerDataModel workerDataModel)
+    {
+        try
+        {
+            var element = GetWorkerById(workerDataModel.Id) ?? throw new ElementNotFoundException(workerDataModel.Id);
+            _dbContext.Workers.Update(_mapper.Map(workerDataModel, element));
+            _dbContext.SaveChanges();
+        }
+        catch (ElementNotFoundException)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw;
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public void DelElement(string id)
+    {
+        try
+        {
+            var element = GetWorkerById(id) ?? throw new ElementNotFoundException(id);
+            element.IsDeleted = true;
+            _dbContext.SaveChanges();
+        }
+        catch (ElementNotFoundException)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw;
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    private Worker? GetWorkerById(string id) => _dbContext.Workers.FirstOrDefault(x => x.Id == id && !x.IsDeleted);
+}

SPiluSZharuProject/SPiluSZharuDatabase/Models/Post.cs

@@ -0,0 +1,20 @@
+using SPiluSZharuContracts.Enums;
+
+namespace SPiluSZharuDatabase.Models;
+
+internal class Post
+{
+    public required string Id { get; set; } = Guid.NewGuid().ToString();
+
+    public required string PostId { get; set; }
+
+    public required string PostName { get; set; }
+
+    public PostType PostType { get; set; }
+
+    public double Salary { get; set; }
+
+    public bool IsActual { get; set; }
+
+    public DateTime ChangeDate { get; set; }
+}

SPiluSZharuProject/SPiluSZharuDatabase/Models/Product.cs

@@ -0,0 +1,23 @@
+using SPiluSZharuContracts.Enums;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace SPiluSZharuDatabase.Models;
+
+internal class Product
+{
+    public required string Id { get; set; }
+
+    public required string ProductName { get; set; }
+
+    public ProductType ProductType { get; set; }
+
+    public double Price { get; set; }
+
+    public bool IsDeleted { get; set; }
+
+    [ForeignKey("ProductId")]
+    public List<ProductHistory>? ProductHistories { get; set; }
+
+    [ForeignKey("ProductId")]
+    public List<SaleProduct>? SaleProducts { get; set; }
+}

SPiluSZharuProject/SPiluSZharuDatabase/Models/ProductHistory.cs

@@ -0,0 +1,14 @@
+namespace SPiluSZharuDatabase.Models;
+
+internal class ProductHistory
+{
+    public string Id { get; set; } = Guid.NewGuid().ToString();
+
+    public required string ProductId { get; set; }
+
+    public double OldPrice { get; set; }
+
+    public DateTime ChangeDate { get; set; }
+
+    public Product? Product { get; set; }
+}

SPiluSZharuProject/SPiluSZharuDatabase/Models/Restaurant.cs

@@ -0,0 +1,16 @@
+using AutoMapper;
+using SPiluSZharuContracts.DataModels;
+
+namespace SPiluSZharuDatabase.Models;
+
+[AutoMap(typeof(RestaurantDataModel), ReverseMap = true)]
+internal class Restaurant
+{
+    public required string Id { get; set; }
+
+    public required string RestaurantName { get; set; }
+
+    public string? PrevRestaurantName { get; set; }
+
+    public string? PrevPrevRestaurantName { get; set; }
+}

SPiluSZharuProject/SPiluSZharuDatabase/Models/Salary.cs

@@ -0,0 +1,14 @@
+namespace SPiluSZharuDatabase.Models;
+
+internal class Salary
+{
+    public string Id { get; set; } = Guid.NewGuid().ToString();
+
+    public required string WorkerId { get; set; }
+
+    public DateTime SalaryDate { get; set; }
+
+    public double WorkerSalary { get; set; }
+
+    public Worker? Worker { get; set; }
+}

SPiluSZharuProject/SPiluSZharuDatabase/Models/Sale.cs

@@ -0,0 +1,27 @@
+using System.ComponentModel.DataAnnotations.Schema;
+using System;
+using SPiluSZharuContracts.DataModels;
+
+namespace SPiluSZharuDatabase.Models;
+
+internal class Sale
+{
+    public string Id { get; set; } = Guid.NewGuid().ToString();
+
+    public required string WorkerId { get; set; }
+
+    public string? RestaurantId { get; set; }
+
+    public DateTime SaleDate { get; set; }
+
+    public double Sum { get; set; }
+
+    public bool IsCancel { get; set; }
+
+    public Worker? Worker { get; set; }
+
+    public Restaurant? Restaurant { get; set; }
+
+    [ForeignKey("SaleId")]
+    public List<SaleProduct>? SaleProducts { get; set; }
+}

SPiluSZharuProject/SPiluSZharuDatabase/Models/SaleProduct.cs

@@ -0,0 +1,14 @@
+namespace SPiluSZharuDatabase.Models;
+
+internal class SaleProduct
+{
+    public required string SaleId { get; set; }
+
+    public required string ProductId { get; set; }
+
+    public int Count { get; set; }
+
+    public Sale? Sale { get; set; }
+
+    public Product? Product { get; set; }
+}

SPiluSZharuProject/SPiluSZharuDatabase/Models/Worker.cs

@@ -0,0 +1,28 @@
+using AutoMapper;
+using SPiluSZharuContracts.DataModels;
+using System.ComponentModel.DataAnnotations.Schema;
+namespace SPiluSZharuDatabase.Models;
+
+[AutoMap(typeof(WorkerDataModel), ReverseMap = true)]
+internal class Worker
+{
+    public required string Id { get; set; }
+
+    public required string FIO { get; set; }
+
+    public required string PostId { get; set; }
+
+    public required string PhoneNumber { get; set; }
+
+    public DateTime BirthDate { get; set; }
+
+    public DateTime EmploymentDate { get; set; }
+
+    public bool IsDeleted { get; set; }
+
+    [ForeignKey("WorkerId")]
+    public List<Salary>? Salaries { get; set; }
+
+    [ForeignKey("WorkerId")]
+    public List<Sale>? Sales { get; set; }
+}

SPiluSZharuProject/SPiluSZharuDatabase/SPiluSZharuDatabase.csproj

@@ -0,0 +1,24 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net9.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="AutoMapper" Version="14.0.0" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="9.0.3" />
+    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="9.0.4" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\SPiluSZharuContracts\SPiluSZharuContracts.csproj" />
+  </ItemGroup>
+
+	<ItemGroup>
+		<InternalsVisibleTo Include="SPiluSZharuTests" />
+		<InternalsVisibleTo Include="DynamicProxyGenAssembly2" />
+	</ItemGroup>
+
+</Project>

SPiluSZharuProject/SPiluSZharuDatabase/SPiluSZharuDbContext.cs

@@ -0,0 +1,59 @@
+using SPiluSZharuContratcs.Infrastructure;
+using Microsoft.EntityFrameworkCore;
+using SPiluSZharuDatabase.Models;
+using System;
+
+namespace SPiluSZharuDatabase;
+
+internal class SPiluSZharuDbContext(IConfigurationDatabase configurationDatabase) : DbContext
+{
+    private readonly IConfigurationDatabase? _configurationDatabase = configurationDatabase;
+
+    protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
+    {
+        optionsBuilder.UseNpgsql(_configurationDatabase?.ConnectionString, o => o.SetPostgresVersion(12, 2));
+        base.OnConfiguring(optionsBuilder);
+    }
+
+    protected override void OnModelCreating(ModelBuilder modelBuilder)
+    {
+        base.OnModelCreating(modelBuilder);
+
+        modelBuilder.Entity<Restaurant>().HasIndex(x => x.RestaurantName).IsUnique();
+
+        modelBuilder.Entity<Post>()
+            .HasIndex(e => new { e.PostName, e.IsActual })
+            .IsUnique()
+            .HasFilter($"\"{nameof(Post.IsActual)}\" = TRUE");
+
+        modelBuilder.Entity<Post>()
+            .HasIndex(e => new { e.PostId, e.IsActual })
+            .IsUnique()
+            .HasFilter($"\"{nameof(Post.IsActual)}\" = TRUE");
+
+        modelBuilder.Entity<Product>()
+            .HasIndex(x => new { x.ProductName, x.IsDeleted })
+            .IsUnique()
+            .HasFilter($"\"{nameof(Product.IsDeleted)}\" = FALSE");
+
+        modelBuilder.Entity<SaleProduct>().HasKey(x => new { x.SaleId, x.ProductId });
+
+        modelBuilder.Entity<Worker>().HasIndex(x => x.PhoneNumber).IsUnique();
+    }
+
+    public DbSet<Restaurant> Restaurants { get; set; }
+
+    public DbSet<Post> Posts { get; set; }
+
+    public DbSet<Product> Products { get; set; }
+
+    public DbSet<ProductHistory> ProductHistories { get; set; }
+
+    public DbSet<Salary> Salaries { get; set; }
+
+    public DbSet<Sale> Sales { get; set; }
+
+    public DbSet<SaleProduct> SaleProducts { get; set; }
+
+    public DbSet<Worker> Workers { get; set; }
+}

SPiluSZharuProject/SPiluSZharuProject.sln

@@ -7,6 +7,10 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SPiluSZharuContracts", "SPi
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SPiluSZharuTests", "SPiluSZharuTests\SPiluSZharuTests.csproj", "{32A3EE3B-0EA9-4F4C-AA60-E90E3C563D61}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SPiluSZharuBuisnessLogic", "SPiluSZharuBuisnessLogic\SPiluSZharuBuisnessLogic.csproj", "{B6AB6CA3-FE95-45BF-8E81-73FFA7EEF523}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SPiluSZharuDatabase", "SPiluSZharuDatabase\SPiluSZharuDatabase.csproj", "{BCE267DF-2D6F-44B2-AC99-0070B7C5A4BC}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -21,6 +25,14 @@ Global
 		{32A3EE3B-0EA9-4F4C-AA60-E90E3C563D61}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{32A3EE3B-0EA9-4F4C-AA60-E90E3C563D61}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{32A3EE3B-0EA9-4F4C-AA60-E90E3C563D61}.Release|Any CPU.Build.0 = Release|Any CPU
+		{B6AB6CA3-FE95-45BF-8E81-73FFA7EEF523}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{B6AB6CA3-FE95-45BF-8E81-73FFA7EEF523}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{B6AB6CA3-FE95-45BF-8E81-73FFA7EEF523}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{B6AB6CA3-FE95-45BF-8E81-73FFA7EEF523}.Release|Any CPU.Build.0 = Release|Any CPU
+		{BCE267DF-2D6F-44B2-AC99-0070B7C5A4BC}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{BCE267DF-2D6F-44B2-AC99-0070B7C5A4BC}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{BCE267DF-2D6F-44B2-AC99-0070B7C5A4BC}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{BCE267DF-2D6F-44B2-AC99-0070B7C5A4BC}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

SPiluSZharuProject/SPiluSZharuTests/BuisnessLogicContractsTests/PostBuisnessLogicContractTests.cs

@@ -0,0 +1,454 @@
+using SPiluSZharuBuisnessLogic.Implementations;
+using SPiluSZharuContracts.DataModels;
+using SPiluSZharuContracts.Enums;
+using SPiluSZharuContracts.Exceptions;
+using SPiluSZharuContracts.StorageContracts;
+using Microsoft.Extensions.Logging;
+using Moq;
+
+namespace SPiluSZharuTests.BuisnessLogicContractsTests;
+
+[TestFixture]
+internal class PostBuisnessLogicContractTests
+{
+    private PostBuisnessLogicContract _postBuisnessLogicContract;
+    private Mock<IPostStorageContract> _postStorageContract;
+
+    [OneTimeSetUp]
+    public void OneTimeSetUp()
+    {
+        _postStorageContract = new Mock<IPostStorageContract>();
+        _postBuisnessLogicContract = new PostBuisnessLogicContract(_postStorageContract.Object, new Mock<ILogger>().Object);
+    }
+
+    [SetUp]
+    public void SetUp()
+    {
+        _postStorageContract.Reset();
+    }
+
+    [Test]
+    public void GetAllPosts_ReturnListOfRecords_Test()
+    {
+        //Arrange
+        var listOriginal = new List<PostDataModel>()
+        {
+            new(Guid.NewGuid().ToString(),"name 1", PostType.Operator, 10, true, DateTime.UtcNow),
+            new(Guid.NewGuid().ToString(), "name 2", PostType.Operator, 10, false, DateTime.UtcNow),
+            new(Guid.NewGuid().ToString(), "name 3", PostType.Operator, 10, true, DateTime.UtcNow),
+        };
+        _postStorageContract.Setup(x => x.GetList(It.IsAny<bool>())).Returns(listOriginal);
+        //Act
+        var listOnlyActive = _postBuisnessLogicContract.GetAllPosts(true);
+        var listAll = _postBuisnessLogicContract.GetAllPosts(false);
+        //Assert
+        Assert.Multiple(() =>
+        {
+            Assert.That(listOnlyActive, Is.Not.Null);
+            Assert.That(listAll, Is.Not.Null);
+            Assert.That(listOnlyActive, Is.EquivalentTo(listOriginal));
+            Assert.That(listAll, Is.EquivalentTo(listOriginal));
+        });
+        _postStorageContract.Verify(x => x.GetList(true), Times.Once);
+        _postStorageContract.Verify(x => x.GetList(false), Times.Once);
+    }
+
+    [Test]
+    public void GetAllPosts_ReturnEmptyList_Test()
+    {
+        //Arrange
+        _postStorageContract.Setup(x => x.GetList(It.IsAny<bool>())).Returns([]);
+        //Act
+        var listOnlyActive = _postBuisnessLogicContract.GetAllPosts(true);
+        var listAll = _postBuisnessLogicContract.GetAllPosts(false);
+        //Assert
+        Assert.Multiple(() =>
+        {
+            Assert.That(listOnlyActive, Is.Not.Null);
+            Assert.That(listAll, Is.Not.Null);
+            Assert.That(listOnlyActive, Has.Count.EqualTo(0));
+            Assert.That(listAll, Has.Count.EqualTo(0));
+        });
+        _postStorageContract.Verify(x => x.GetList(It.IsAny<bool>()), Times.Exactly(2));
+    }
+
+    [Test]
+    public void GetAllPosts_ReturnNull_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _postBuisnessLogicContract.GetAllPosts(It.IsAny<bool>()), Throws.TypeOf<NullListException>());
+        _postStorageContract.Verify(x => x.GetList(It.IsAny<bool>()), Times.Once);
+    }
+
+    [Test]
+    public void GetAllPosts_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _postStorageContract.Setup(x => x.GetList(It.IsAny<bool>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _postBuisnessLogicContract.GetAllPosts(It.IsAny<bool>()), Throws.TypeOf<StorageException>());
+        _postStorageContract.Verify(x => x.GetList(It.IsAny<bool>()), Times.Once);
+    }
+
+    [Test]
+    public void GetAllDataOfPost_ReturnListOfRecords_Test()
+    {
+        //Arrange
+        var postId = Guid.NewGuid().ToString();
+        var listOriginal = new List<PostDataModel>()
+        {
+            new(postId, "name 1", PostType.Operator, 10, true, DateTime.UtcNow),
+            new(postId, "name 2", PostType.Operator, 10, false, DateTime.UtcNow)
+        };
+        _postStorageContract.Setup(x => x.GetPostWithHistory(It.IsAny<string>())).Returns(listOriginal);
+        //Act
+        var list = _postBuisnessLogicContract.GetAllDataOfPost(postId);
+        //Assert
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(2));
+        _postStorageContract.Verify(x => x.GetPostWithHistory(postId), Times.Once);
+    }
+
+    [Test]
+    public void GetAllDataOfPost_ReturnEmptyList_Test()
+    {
+        //Arrange
+        _postStorageContract.Setup(x => x.GetPostWithHistory(It.IsAny<string>())).Returns([]);
+        //Act
+        var list = _postBuisnessLogicContract.GetAllDataOfPost(Guid.NewGuid().ToString());
+        //Assert
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(0));
+        _postStorageContract.Verify(x => x.GetPostWithHistory(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetAllDataOfPost_PostIdIsNullOrEmpty_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _postBuisnessLogicContract.GetAllDataOfPost(null), Throws.TypeOf<ArgumentNullException>());
+        Assert.That(() => _postBuisnessLogicContract.GetAllDataOfPost(string.Empty), Throws.TypeOf<ArgumentNullException>());
+        _postStorageContract.Verify(x => x.GetPostWithHistory(It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetAllDataOfPost_PostIdIsNotGuid_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _postBuisnessLogicContract.GetAllDataOfPost("id"), Throws.TypeOf<ValidationException>());
+        _postStorageContract.Verify(x => x.GetPostWithHistory(It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetAllDataOfPost_ReturnNull_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _postBuisnessLogicContract.GetAllDataOfPost(Guid.NewGuid().ToString()), Throws.TypeOf<NullListException>());
+        _postStorageContract.Verify(x => x.GetPostWithHistory(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetAllDataOfPost_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _postStorageContract.Setup(x => x.GetPostWithHistory(It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _postBuisnessLogicContract.GetAllDataOfPost(Guid.NewGuid().ToString()), Throws.TypeOf<StorageException>());
+        _postStorageContract.Verify(x => x.GetPostWithHistory(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetPostByData_GetById_ReturnRecord_Test()
+    {
+        //Arrange
+        var id = Guid.NewGuid().ToString();
+        var record = new PostDataModel(id, "name", PostType.Operator, 10, true, DateTime.UtcNow);
+        _postStorageContract.Setup(x => x.GetElementById(id)).Returns(record);
+        //Act
+        var element = _postBuisnessLogicContract.GetPostByData(id);
+        //Assert
+        Assert.That(element, Is.Not.Null);
+        Assert.That(element.Id, Is.EqualTo(id));
+        _postStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetPostByData_GetByName_ReturnRecord_Test()
+    {
+        //Arrange
+        var postName = "name";
+        var record = new PostDataModel(Guid.NewGuid().ToString(), postName, PostType.Operator, 10, true, DateTime.UtcNow);
+        _postStorageContract.Setup(x => x.GetElementByName(postName)).Returns(record);
+        //Act
+        var element = _postBuisnessLogicContract.GetPostByData(postName);
+        //Assert
+        Assert.That(element, Is.Not.Null);
+        Assert.That(element.PostName, Is.EqualTo(postName));
+        _postStorageContract.Verify(x => x.GetElementByName(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetPostByData_EmptyData_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _postBuisnessLogicContract.GetPostByData(null), Throws.TypeOf<ArgumentNullException>());
+        Assert.That(() => _postBuisnessLogicContract.GetPostByData(string.Empty), Throws.TypeOf<ArgumentNullException>());
+        _postStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Never);
+        _postStorageContract.Verify(x => x.GetElementByName(It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetPostByData_GetById_NotFoundRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _postBuisnessLogicContract.GetPostByData(Guid.NewGuid().ToString()), Throws.TypeOf<ElementNotFoundException>());
+        _postStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Once);
+        _postStorageContract.Verify(x => x.GetElementByName(It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetPostByData_GetByName_NotFoundRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _postBuisnessLogicContract.GetPostByData("name"), Throws.TypeOf<ElementNotFoundException>());
+        _postStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Never);
+        _postStorageContract.Verify(x => x.GetElementByName(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetPostByData_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _postStorageContract.Setup(x => x.GetElementById(It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+        _postStorageContract.Setup(x => x.GetElementByName(It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _postBuisnessLogicContract.GetPostByData(Guid.NewGuid().ToString()), Throws.TypeOf<StorageException>());
+        Assert.That(() => _postBuisnessLogicContract.GetPostByData("name"), Throws.TypeOf<StorageException>());
+        _postStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Once);
+        _postStorageContract.Verify(x => x.GetElementByName(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void InsertPost_CorrectRecord_Test()
+    {
+        //Arrange
+        var flag = false;
+        var record = new PostDataModel(Guid.NewGuid().ToString(), "name", PostType.OrderPicker, 10, true, DateTime.UtcNow.AddDays(-1));
+        _postStorageContract.Setup(x => x.AddElement(It.IsAny<PostDataModel>()))
+            .Callback((PostDataModel x) =>
+            {
+                flag = x.Id == record.Id && x.PostName == record.PostName && x.PostType == record.PostType && x.Salary == record.Salary &&
+                    x.ChangeDate == record.ChangeDate;
+            });
+        //Act
+        _postBuisnessLogicContract.InsertPost(record);
+        //Assert
+        _postStorageContract.Verify(x => x.AddElement(It.IsAny<PostDataModel>()), Times.Once);
+        Assert.That(flag);
+    }
+
+    [Test]
+    public void InsertPost_RecordWithExistsData_ThrowException_Test()
+    {
+        //Arrange
+        _postStorageContract.Setup(x => x.AddElement(It.IsAny<PostDataModel>())).Throws(new ElementExistsException("Data", "Data"));
+        //Act&Assert
+        Assert.That(() => _postBuisnessLogicContract.InsertPost(new(Guid.NewGuid().ToString(), "name", PostType.OrderPicker, 10, true, DateTime.UtcNow)), Throws.TypeOf<ElementExistsException>());
+        _postStorageContract.Verify(x => x.AddElement(It.IsAny<PostDataModel>()), Times.Once);
+    }
+
+    [Test]
+    public void InsertPost_NullRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _postBuisnessLogicContract.InsertPost(null), Throws.TypeOf<ArgumentNullException>());
+        _postStorageContract.Verify(x => x.AddElement(It.IsAny<PostDataModel>()), Times.Never);
+    }
+
+    [Test]
+    public void InsertPost_InvalidRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _postBuisnessLogicContract.InsertPost(new PostDataModel("id", "name", PostType.OrderPicker, 10, true, DateTime.UtcNow)), Throws.TypeOf<ValidationException>());
+        _postStorageContract.Verify(x => x.AddElement(It.IsAny<PostDataModel>()), Times.Never);
+    }
+
+    [Test]
+    public void InsertPost_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _postStorageContract.Setup(x => x.AddElement(It.IsAny<PostDataModel>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _postBuisnessLogicContract.InsertPost(new(Guid.NewGuid().ToString(), "name", PostType.OrderPicker, 10, true, DateTime.UtcNow)), Throws.TypeOf<StorageException>());
+        _postStorageContract.Verify(x => x.AddElement(It.IsAny<PostDataModel>()), Times.Once);
+    }
+
+    [Test]
+    public void UpdatePost_CorrectRecord_Test()
+    {
+        //Arrange
+        var flag = false;
+        var record = new PostDataModel(Guid.NewGuid().ToString(), "name", PostType.OrderPicker, 10, true, DateTime.UtcNow.AddDays(-1));
+        _postStorageContract.Setup(x => x.UpdElement(It.IsAny<PostDataModel>()))
+            .Callback((PostDataModel x) =>
+            {
+                flag = x.Id == record.Id && x.PostName == record.PostName && x.PostType == record.PostType && x.Salary == record.Salary &&
+                    x.ChangeDate == record.ChangeDate;
+            });
+        //Act
+        _postBuisnessLogicContract.UpdatePost(record);
+        //Assert
+        _postStorageContract.Verify(x => x.UpdElement(It.IsAny<PostDataModel>()), Times.Once);
+        Assert.That(flag);
+    }
+
+    [Test]
+    public void UpdatePost_RecordWithIncorrectData_ThrowException_Test()
+    {
+        //Arrange
+        _postStorageContract.Setup(x => x.UpdElement(It.IsAny<PostDataModel>())).Throws(new ElementNotFoundException(""));
+        //Act&Assert
+        Assert.That(() => _postBuisnessLogicContract.UpdatePost(new(Guid.NewGuid().ToString(), "name", PostType.OrderPicker, 10, true, DateTime.UtcNow)), Throws.TypeOf<ElementNotFoundException>());
+        _postStorageContract.Verify(x => x.UpdElement(It.IsAny<PostDataModel>()), Times.Once);
+    }
+
+    [Test]
+    public void UpdatePost_RecordWithExistsData_ThrowException_Test()
+    {
+        //Arrange
+        _postStorageContract.Setup(x => x.UpdElement(It.IsAny<PostDataModel>())).Throws(new ElementExistsException("Data", "Data"));
+        //Act&Assert
+        Assert.That(() => _postBuisnessLogicContract.UpdatePost(new(Guid.NewGuid().ToString(), "anme", PostType.OrderPicker, 10, true, DateTime.UtcNow)), Throws.TypeOf<ElementExistsException>());
+        _postStorageContract.Verify(x => x.UpdElement(It.IsAny<PostDataModel>()), Times.Once);
+    }
+
+    [Test]
+    public void UpdatePost_NullRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _postBuisnessLogicContract.UpdatePost(null), Throws.TypeOf<ArgumentNullException>());
+        _postStorageContract.Verify(x => x.UpdElement(It.IsAny<PostDataModel>()), Times.Never);
+    }
+
+    [Test]
+    public void UpdatePost_InvalidRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _postBuisnessLogicContract.UpdatePost(new PostDataModel("id", "name", PostType.OrderPicker, 10, true, DateTime.UtcNow)), Throws.TypeOf<ValidationException>());
+        _postStorageContract.Verify(x => x.UpdElement(It.IsAny<PostDataModel>()), Times.Never);
+    }
+
+    [Test]
+    public void UpdatePost_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _postStorageContract.Setup(x => x.UpdElement(It.IsAny<PostDataModel>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _postBuisnessLogicContract.UpdatePost(new(Guid.NewGuid().ToString(), "name", PostType.OrderPicker, 10, true, DateTime.UtcNow)), Throws.TypeOf<StorageException>());
+        _postStorageContract.Verify(x => x.UpdElement(It.IsAny<PostDataModel>()), Times.Once);
+    }
+
+    [Test]
+    public void DeletePost_CorrectRecord_Test()
+    {
+        //Arrange
+        var id = Guid.NewGuid().ToString();
+        var flag = false;
+        _postStorageContract.Setup(x => x.DelElement(It.Is((string x) => x == id))).Callback(() => { flag = true; });
+        //Act
+        _postBuisnessLogicContract.DeletePost(id);
+        //Assert
+        _postStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Once);
+        Assert.That(flag);
+    }
+
+    [Test]
+    public void DeletePost_RecordWithIncorrectId_ThrowException_Test()
+    {
+        //Arrange
+        var id = Guid.NewGuid().ToString();
+        _postStorageContract.Setup(x => x.DelElement(It.IsAny<string>())).Throws(new ElementNotFoundException(id));
+        //Act&Assert
+        Assert.That(() => _postBuisnessLogicContract.DeletePost(Guid.NewGuid().ToString()), Throws.TypeOf<ElementNotFoundException>());
+        _postStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void DeletePost_IdIsNullOrEmpty_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _postBuisnessLogicContract.DeletePost(null), Throws.TypeOf<ArgumentNullException>());
+        Assert.That(() => _postBuisnessLogicContract.DeletePost(string.Empty), Throws.TypeOf<ArgumentNullException>());
+        _postStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void DeletePost_IdIsNotGuid_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _postBuisnessLogicContract.DeletePost("id"), Throws.TypeOf<ValidationException>());
+        _postStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void DeletePost_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _postStorageContract.Setup(x => x.DelElement(It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _postBuisnessLogicContract.DeletePost(Guid.NewGuid().ToString()), Throws.TypeOf<StorageException>());
+        _postStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void RestorePost_CorrectRecord_Test()
+    {
+        //Arrange
+        var id = Guid.NewGuid().ToString();
+        var flag = false;
+        _postStorageContract.Setup(x => x.ResElement(It.Is((string x) => x == id))).Callback(() => { flag = true; });
+        //Act
+        _postBuisnessLogicContract.RestorePost(id);
+        //Assert
+        _postStorageContract.Verify(x => x.ResElement(It.IsAny<string>()), Times.Once);
+        Assert.That(flag);
+    }
+
+    [Test]
+    public void RestorePost_RecordWithIncorrectId_ThrowException_Test()
+    {
+        //Arrange
+        var id = Guid.NewGuid().ToString();
+        _postStorageContract.Setup(x => x.ResElement(It.IsAny<string>())).Throws(new ElementNotFoundException(id));
+        //Act&Assert
+        Assert.That(() => _postBuisnessLogicContract.RestorePost(Guid.NewGuid().ToString()), Throws.TypeOf<ElementNotFoundException>());
+        _postStorageContract.Verify(x => x.ResElement(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void RestorePost_IdIsNullOrEmpty_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _postBuisnessLogicContract.RestorePost(null), Throws.TypeOf<ArgumentNullException>());
+        Assert.That(() => _postBuisnessLogicContract.RestorePost(string.Empty), Throws.TypeOf<ArgumentNullException>());
+        _postStorageContract.Verify(x => x.ResElement(It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void RestorePost_IdIsNotGuid_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _postBuisnessLogicContract.RestorePost("id"), Throws.TypeOf<ValidationException>());
+        _postStorageContract.Verify(x => x.ResElement(It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void RestorePost_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _postStorageContract.Setup(x => x.ResElement(It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _postBuisnessLogicContract.RestorePost(Guid.NewGuid().ToString()), Throws.TypeOf<StorageException>());
+        _postStorageContract.Verify(x => x.ResElement(It.IsAny<string>()), Times.Once);
+    }
+}

SPiluSZharuProject/SPiluSZharuTests/BuisnessLogicContractsTests/ProductBuisnessLogicContractTests.cs

@@ -0,0 +1,401 @@
+using SPiluSZharuBuisnessLogic.Implementations;
+using SPiluSZharuContracts.DataModels;
+using SPiluSZharuContracts.Enums;
+using SPiluSZharuContracts.Exceptions;
+using SPiluSZharuContracts.StorageContracts;
+using Microsoft.Extensions.Logging;
+using Moq;
+
+namespace SPiluSZharuTests.BuisnessLogicContractsTests;
+
+[TestFixture]
+internal class ProductBuisnessLogicContractTests
+{
+    private ProductBuisnessLogicContract _productBuisnessLogicContract;
+    private Mock<IProductStorageContract> _productStorageContract;
+
+    [OneTimeSetUp]
+    public void OneTimeSetUp()
+    {
+        _productStorageContract = new Mock<IProductStorageContract>();
+        _productBuisnessLogicContract = new ProductBuisnessLogicContract(_productStorageContract.Object, new Mock<ILogger>().Object);
+    }
+
+    [SetUp]
+    public void SetUp()
+    {
+        _productStorageContract.Reset();
+    }
+
+    [Test]
+    public void GetAllProducts_ReturnListOfRecords_Test()
+    {
+        //Arrange
+        var listOriginal = new List<ProductDataModel>()
+        {
+            new(Guid.NewGuid().ToString(), "name 1", ProductType.Pizza, 10, false),
+            new(Guid.NewGuid().ToString(), "name 2", ProductType.Pizza, 10, true),
+            new(Guid.NewGuid().ToString(), "name 3", ProductType.Pizza, 10, false),
+        };
+        _productStorageContract.Setup(x => x.GetList(It.IsAny<bool>())).Returns(listOriginal);
+        //Act
+        var listOnlyActive = _productBuisnessLogicContract.GetAllProducts(true);
+        var list = _productBuisnessLogicContract.GetAllProducts(false);
+        //Assert
+        Assert.Multiple(() =>
+        {
+            Assert.That(listOnlyActive, Is.Not.Null);
+            Assert.That(list, Is.Not.Null);
+            Assert.That(listOnlyActive, Is.EquivalentTo(listOriginal));
+            Assert.That(list, Is.EquivalentTo(listOriginal));
+        });
+        _productStorageContract.Verify(x => x.GetList(true), Times.Once);
+        _productStorageContract.Verify(x => x.GetList(false), Times.Once);
+    }
+
+    [Test]
+    public void GetAllProducts_ReturnEmptyList_Test()
+    {
+        //Arrange
+        _productStorageContract.Setup(x => x.GetList(It.IsAny<bool>())).Returns([]);
+        //Act
+        var listOnlyActive = _productBuisnessLogicContract.GetAllProducts(true);
+        var list = _productBuisnessLogicContract.GetAllProducts(false);
+        //Assert
+        Assert.Multiple(() =>
+        {
+            Assert.That(listOnlyActive, Is.Not.Null);
+            Assert.That(list, Is.Not.Null);
+            Assert.That(listOnlyActive, Has.Count.EqualTo(0));
+            Assert.That(list, Has.Count.EqualTo(0));
+        });
+        _productStorageContract.Verify(x => x.GetList(It.IsAny<bool>()), Times.Exactly(2));
+    }
+
+    [Test]
+    public void GetAllProducts_ReturnNull_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _productBuisnessLogicContract.GetAllProducts(It.IsAny<bool>()), Throws.TypeOf<NullListException>());
+        _productStorageContract.Verify(x => x.GetList(It.IsAny<bool>()), Times.Once);
+    }
+
+    [Test]
+    public void GetAllProducts_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _productStorageContract.Setup(x => x.GetList(It.IsAny<bool>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _productBuisnessLogicContract.GetAllProducts(It.IsAny<bool>()), Throws.TypeOf<StorageException>());
+        _productStorageContract.Verify(x => x.GetList(It.IsAny<bool>()), Times.Once);
+    }
+
+    [Test]
+    public void GetProductHistoryByProduct_ReturnListOfRecords_Test()
+    {
+        //Arrange
+        var productId = Guid.NewGuid().ToString();
+        var listOriginal = new List<ProductHistoryDataModel>()
+        {
+            new(Guid.NewGuid().ToString(), 10),
+            new(Guid.NewGuid().ToString(), 15),
+            new(Guid.NewGuid().ToString(), 10),
+        };
+        _productStorageContract.Setup(x => x.GetHistoryByProductId(It.IsAny<string>())).Returns(listOriginal);
+        //Act
+        var list = _productBuisnessLogicContract.GetProductHistoryByProduct(productId);
+        //Assert
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Is.EquivalentTo(listOriginal));
+        _productStorageContract.Verify(x => x.GetHistoryByProductId(productId), Times.Once);
+    }
+
+    [Test]
+    public void GetProductHistoryByProduct_ReturnEmptyList_Test()
+    {
+        //Arrange
+        _productStorageContract.Setup(x => x.GetHistoryByProductId(It.IsAny<string>())).Returns([]);
+        //Act
+        var list = _productBuisnessLogicContract.GetProductHistoryByProduct(Guid.NewGuid().ToString());
+        //Assert
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(0));
+        _productStorageContract.Verify(x => x.GetHistoryByProductId(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetProductHistoryByProduct_ProductIdIsNullOrEmpty_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _productBuisnessLogicContract.GetProductHistoryByProduct(null), Throws.TypeOf<ArgumentNullException>());
+        Assert.That(() => _productBuisnessLogicContract.GetProductHistoryByProduct(string.Empty), Throws.TypeOf<ArgumentNullException>());
+        _productStorageContract.Verify(x => x.GetHistoryByProductId(It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetProductHistoryByProduct_ProductIdIsNotGuid_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _productBuisnessLogicContract.GetProductHistoryByProduct("productId"), Throws.TypeOf<ValidationException>());
+        _productStorageContract.Verify(x => x.GetHistoryByProductId(It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetProductHistoryByProduct_ReturnNull_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _productBuisnessLogicContract.GetProductHistoryByProduct(Guid.NewGuid().ToString()), Throws.TypeOf<NullListException>());
+        _productStorageContract.Verify(x => x.GetHistoryByProductId(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetProductHistoryByProduct_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _productStorageContract.Setup(x => x.GetHistoryByProductId(It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _productBuisnessLogicContract.GetProductHistoryByProduct(Guid.NewGuid().ToString()), Throws.TypeOf<StorageException>());
+        _productStorageContract.Verify(x => x.GetHistoryByProductId(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetProductByData_GetById_ReturnRecord_Test()
+    {
+        //Arrange
+        var id = Guid.NewGuid().ToString();
+        var record = new ProductDataModel(id, "name", ProductType.Pizza, 10, false);
+        _productStorageContract.Setup(x => x.GetElementById(id)).Returns(record);
+        //Act
+        var element = _productBuisnessLogicContract.GetProductByData(id);
+        //Assert
+        Assert.That(element, Is.Not.Null);
+        Assert.That(element.Id, Is.EqualTo(id));
+        _productStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetProductByData_GetByName_ReturnRecord_Test()
+    {
+        //Arrange
+        var name = "name";
+        var record = new ProductDataModel(Guid.NewGuid().ToString(), name, ProductType.Pizza, 10, false);
+        _productStorageContract.Setup(x => x.GetElementByName(name)).Returns(record);
+        //Act
+        var element = _productBuisnessLogicContract.GetProductByData(name);
+        //Assert
+        Assert.That(element, Is.Not.Null);
+        Assert.That(element.ProductName, Is.EqualTo(name));
+        _productStorageContract.Verify(x => x.GetElementByName(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetProductByData_EmptyData_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _productBuisnessLogicContract.GetProductByData(null), Throws.TypeOf<ArgumentNullException>());
+        Assert.That(() => _productBuisnessLogicContract.GetProductByData(string.Empty), Throws.TypeOf<ArgumentNullException>());
+        _productStorageContract.Verify(x => x.GetElementByName(It.IsAny<string>()), Times.Never);
+        _productStorageContract.Verify(x => x.GetElementByName(It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetProductByData_GetById_NotFoundRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _productBuisnessLogicContract.GetProductByData(Guid.NewGuid().ToString()), Throws.TypeOf<ElementNotFoundException>());
+        _productStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetProductByData_GetByName_NotFoundRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _productBuisnessLogicContract.GetProductByData("name"), Throws.TypeOf<ElementNotFoundException>());
+        _productStorageContract.Verify(x => x.GetElementByName(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetProductByData_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _productStorageContract.Setup(x => x.GetElementById(It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+        _productStorageContract.Setup(x => x.GetElementByName(It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _productBuisnessLogicContract.GetProductByData(Guid.NewGuid().ToString()), Throws.TypeOf<StorageException>());
+        Assert.That(() => _productBuisnessLogicContract.GetProductByData("name"), Throws.TypeOf<StorageException>());
+        _productStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Once);
+        _productStorageContract.Verify(x => x.GetElementByName(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void InsertProduct_CorrectRecord_Test()
+    {
+        //Arrange
+        var flag = false;
+        var record = new ProductDataModel(Guid.NewGuid().ToString(), "name", ProductType.Pizza, 10, false);
+        _productStorageContract.Setup(x => x.AddElement(It.IsAny<ProductDataModel>()))
+            .Callback((ProductDataModel x) =>
+            {
+                flag = x.Id == record.Id && x.ProductName == record.ProductName && x.ProductType == record.ProductType 
+                && x.Price == record.Price && x.IsDeleted == record.IsDeleted;
+            });
+        //Act
+        _productBuisnessLogicContract.InsertProduct(record);
+        //Assert
+        _productStorageContract.Verify(x => x.AddElement(It.IsAny<ProductDataModel>()), Times.Once);
+        Assert.That(flag);
+    }
+
+    [Test]
+    public void InsertProduct_RecordWithExistsData_ThrowException_Test()
+    {
+        //Arrange
+        _productStorageContract.Setup(x => x.AddElement(It.IsAny<ProductDataModel>())).Throws(new ElementExistsException("Data", "Data"));
+        //Act&Assert
+        Assert.That(() => _productBuisnessLogicContract.InsertProduct(new(Guid.NewGuid().ToString(), "name", ProductType.Pizza, 10, false)), Throws.TypeOf<ElementExistsException>());
+        _productStorageContract.Verify(x => x.AddElement(It.IsAny<ProductDataModel>()), Times.Once);
+    }
+
+    [Test]
+    public void InsertProduct_NullRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _productBuisnessLogicContract.InsertProduct(null), Throws.TypeOf<ArgumentNullException>());
+        _productStorageContract.Verify(x => x.AddElement(It.IsAny<ProductDataModel>()), Times.Never);
+    }
+
+    [Test]
+    public void InsertProduct_InvalidRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _productBuisnessLogicContract.InsertProduct(new ProductDataModel("id", "name", ProductType.Pizza, 10, false)), Throws.TypeOf<ValidationException>());
+        _productStorageContract.Verify(x => x.AddElement(It.IsAny<ProductDataModel>()), Times.Never);
+    }
+
+    [Test]
+    public void InsertProduct_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _productStorageContract.Setup(x => x.AddElement(It.IsAny<ProductDataModel>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _productBuisnessLogicContract.InsertProduct(new(Guid.NewGuid().ToString(), "name", ProductType.Pizza, 10, false)), Throws.TypeOf<StorageException>());
+        _productStorageContract.Verify(x => x.AddElement(It.IsAny<ProductDataModel>()), Times.Once);
+    }
+
+    [Test]
+    public void UpdateProduct_CorrectRecord_Test()
+    {
+        //Arrange
+        var flag = false;
+        var record = new ProductDataModel(Guid.NewGuid().ToString(), "name", ProductType.Pizza, 10, false);
+        _productStorageContract.Setup(x => x.UpdElement(It.IsAny<ProductDataModel>()))
+            .Callback((ProductDataModel x) =>
+            {
+                flag = x.Id == record.Id && x.ProductName == record.ProductName && x.ProductType == record.ProductType 
+                && x.Price == record.Price && x.IsDeleted == record.IsDeleted;
+            });
+        //Act
+        _productBuisnessLogicContract.UpdateProduct(record);
+        //Assert
+        _productStorageContract.Verify(x => x.UpdElement(It.IsAny<ProductDataModel>()), Times.Once);
+        Assert.That(flag);
+    }
+
+    [Test]
+    public void UpdateProduct_RecordWithIncorrectData_ThrowException_Test()
+    {
+        //Arrange
+        _productStorageContract.Setup(x => x.UpdElement(It.IsAny<ProductDataModel>())).Throws(new ElementNotFoundException(""));
+        //Act&Assert
+        Assert.That(() => _productBuisnessLogicContract.UpdateProduct(new(Guid.NewGuid().ToString(), "name", ProductType.Pizza, 10, false)), Throws.TypeOf<ElementNotFoundException>());
+        _productStorageContract.Verify(x => x.UpdElement(It.IsAny<ProductDataModel>()), Times.Once);
+    }
+
+    [Test]
+    public void UpdateProduct_RecordWithExistsData_ThrowException_Test()
+    {
+        //Arrange
+        _productStorageContract.Setup(x => x.UpdElement(It.IsAny<ProductDataModel>())).Throws(new ElementExistsException("Data", "Data"));
+        //Act&Assert
+        Assert.That(() => _productBuisnessLogicContract.UpdateProduct(new(Guid.NewGuid().ToString(), "name", ProductType.Pizza, 10, false)), Throws.TypeOf<ElementExistsException>());
+        _productStorageContract.Verify(x => x.UpdElement(It.IsAny<ProductDataModel>()), Times.Once);
+    }
+
+    [Test]
+    public void UpdateProduct_NullRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _productBuisnessLogicContract.UpdateProduct(null), Throws.TypeOf<ArgumentNullException>());
+        _productStorageContract.Verify(x => x.UpdElement(It.IsAny<ProductDataModel>()), Times.Never);
+    }
+
+    [Test]
+    public void UpdateProduct_InvalidRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _productBuisnessLogicContract.UpdateProduct(new ProductDataModel("id", "name", ProductType.Pizza, 10, false)), Throws.TypeOf<ValidationException>());
+        _productStorageContract.Verify(x => x.UpdElement(It.IsAny<ProductDataModel>()), Times.Never);
+    }
+
+    [Test]
+    public void UpdateProduct_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _productStorageContract.Setup(x => x.UpdElement(It.IsAny<ProductDataModel>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _productBuisnessLogicContract.UpdateProduct(new(Guid.NewGuid().ToString(), "name", ProductType.Pizza, 10, false)), Throws.TypeOf<StorageException>());
+        _productStorageContract.Verify(x => x.UpdElement(It.IsAny<ProductDataModel>()), Times.Once);
+    }
+
+    [Test]
+    public void DeleteProduct_CorrectRecord_Test()
+    {
+        //Arrange
+        var id = Guid.NewGuid().ToString();
+        var flag = false;
+        _productStorageContract.Setup(x => x.DelElement(It.Is((string x) => x == id))).Callback(() => { flag = true; });
+        //Act
+        _productBuisnessLogicContract.DeleteProduct(id);
+        //Assert
+        _productStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Once);
+        Assert.That(flag);
+    }
+
+    [Test]
+    public void DeleteProduct_RecordWithIncorrectId_ThrowException_Test()
+    {
+        //Arrange
+        var id = Guid.NewGuid().ToString();
+        _productStorageContract.Setup(x => x.DelElement(It.IsAny<string>())).Throws(new ElementNotFoundException(id));
+        //Act&Assert
+        Assert.That(() => _productBuisnessLogicContract.DeleteProduct(Guid.NewGuid().ToString()), Throws.TypeOf<ElementNotFoundException>());
+        _productStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void DeleteProduct_IdIsNullOrEmpty_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _productBuisnessLogicContract.DeleteProduct(null), Throws.TypeOf<ArgumentNullException>());
+        Assert.That(() => _productBuisnessLogicContract.DeleteProduct(string.Empty), Throws.TypeOf<ArgumentNullException>());
+        _productStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void DeleteProduct_IdIsNotGuid_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _productBuisnessLogicContract.DeleteProduct("id"), Throws.TypeOf<ValidationException>());
+        _productStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void DeleteProduct_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _productStorageContract.Setup(x => x.DelElement(It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _productBuisnessLogicContract.DeleteProduct(Guid.NewGuid().ToString()), Throws.TypeOf<StorageException>());
+        _productStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Once);
+    }
+}

SPiluSZharuProject/SPiluSZharuTests/BuisnessLogicContractsTests/RestaurantBuisnessLogicContractTests.cs

@@ -0,0 +1,349 @@
+using SPiluSZharuBuisnessLogic.Implementations;
+using SPiluSZharuContracts.DataModels;
+using SPiluSZharuContracts.Exceptions;
+using SPiluSZharuContracts.StorageContracts;
+using Microsoft.Extensions.Logging;
+using Moq;
+
+namespace SPiluSZharuTests.BuisnessLogicContractsTests;
+
+[TestFixture]
+internal class RestaurantBuisnessLogicContractTests
+{
+    private RestaurantBuisnessLogicContract _restaurantBuisnessLogicContract;
+    private Mock<IRestaurantStorageContract> _restaurantStorageContract;
+
+    [OneTimeSetUp]
+    public void OneTimeSetUp()
+    {
+        _restaurantStorageContract = new Mock<IRestaurantStorageContract>();
+        _restaurantBuisnessLogicContract = new RestaurantBuisnessLogicContract(_restaurantStorageContract.Object, new Mock<ILogger>().Object);
+    }
+
+    [SetUp]
+    public void SetUp()
+    {
+        _restaurantStorageContract.Reset();
+    }
+
+    [Test]
+    public void GetAllRestaurants_ReturnListOfRecords_Test()
+    {
+        //Arrange
+        var listOriginal = new List<RestaurantDataModel>()
+        {
+            new(Guid.NewGuid().ToString(), "name 1", null, null),
+            new(Guid.NewGuid().ToString(), "name 2", null, null),
+            new(Guid.NewGuid().ToString(), "name 3", null, null),
+        };
+        _restaurantStorageContract.Setup(x => x.GetList()).Returns(listOriginal);
+        //Act
+        var list = _restaurantBuisnessLogicContract.GetAllRestaurants();
+        //Assert
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Is.EquivalentTo(listOriginal));
+    }
+
+    [Test]
+    public void GetAllRestaurants_ReturnEmptyList_Test()
+    {
+        //Arrange
+        _restaurantStorageContract.Setup(x => x.GetList()).Returns([]);
+        //Act
+        var list = _restaurantBuisnessLogicContract.GetAllRestaurants();
+        //Assert
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(0));
+        _restaurantStorageContract.Verify(x => x.GetList(), Times.Once);
+    }
+
+    [Test]
+    public void GetAllRestaurants_ReturnNull_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _restaurantBuisnessLogicContract.GetAllRestaurants(), Throws.TypeOf<NullListException>());
+        _restaurantStorageContract.Verify(x => x.GetList(), Times.Once);
+    }
+
+    [Test]
+    public void GetAllRestaurants_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _restaurantStorageContract.Setup(x => x.GetList()).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _restaurantBuisnessLogicContract.GetAllRestaurants(), Throws.TypeOf<StorageException>());
+        _restaurantStorageContract.Verify(x => x.GetList(), Times.Once);
+    }
+
+    [Test]
+    public void GetRestaurantByData_GetById_ReturnRecord_Test()
+    {
+        //Arrange
+        var id = Guid.NewGuid().ToString();
+        var record = new RestaurantDataModel(id, "name", null, null);
+        _restaurantStorageContract.Setup(x => x.GetElementById(id)).Returns(record);
+        //Act
+        var element = _restaurantBuisnessLogicContract.GetRestaurantByData(id);
+        //Assert
+        Assert.That(element, Is.Not.Null);
+        Assert.That(element.Id, Is.EqualTo(id));
+        _restaurantStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetRestaurantByData_GetByName_ReturnRecord_Test()
+    {
+        //Arrange
+        var restaurantName = "name";
+        var record = new RestaurantDataModel(Guid.NewGuid().ToString(), restaurantName, null, null);
+        _restaurantStorageContract.Setup(x => x.GetElementByName(restaurantName)).Returns(record);
+        //Act
+        var element = _restaurantBuisnessLogicContract.GetRestaurantByData(restaurantName);
+        //Assert
+        Assert.That(element, Is.Not.Null);
+        Assert.That(element.RestaurantName, Is.EqualTo(restaurantName));
+        _restaurantStorageContract.Verify(x => x.GetElementByName(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetRestaurantByData_GetByOldName_ReturnRecord_Test()
+    {
+        //Arrange
+        var restaurantOldName = "name before";
+        var record = new RestaurantDataModel(Guid.NewGuid().ToString(), "name", restaurantOldName, null);
+        _restaurantStorageContract.Setup(x => x.GetElementByOldName(restaurantOldName)).Returns(record);
+        //Act
+        var element = _restaurantBuisnessLogicContract.GetRestaurantByData(restaurantOldName);
+        //Assert
+        Assert.That(element, Is.Not.Null);
+        Assert.That(element.PrevRestaurantName, Is.EqualTo(restaurantOldName));
+        _restaurantStorageContract.Verify(x => x.GetElementByName(It.IsAny<string>()), Times.Once);
+        _restaurantStorageContract.Verify(x => x.GetElementByOldName(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetRestaurantByData_EmptyData_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _restaurantBuisnessLogicContract.GetRestaurantByData(null), Throws.TypeOf<ArgumentNullException>());
+        Assert.That(() => _restaurantBuisnessLogicContract.GetRestaurantByData(string.Empty), Throws.TypeOf<ArgumentNullException>());
+        _restaurantStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Never);
+        _restaurantStorageContract.Verify(x => x.GetElementByName(It.IsAny<string>()), Times.Never);
+        _restaurantStorageContract.Verify(x => x.GetElementByOldName(It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetRestaurantByData__GetById_NotFoundRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _restaurantBuisnessLogicContract.GetRestaurantByData(Guid.NewGuid().ToString()), Throws.TypeOf<ElementNotFoundException>());
+        _restaurantStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Once);
+        _restaurantStorageContract.Verify(x => x.GetElementByName(It.IsAny<string>()), Times.Never);
+        _restaurantStorageContract.Verify(x => x.GetElementByOldName(It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetRestaurantByData_GetByNameOrOldName_NotFoundRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _restaurantBuisnessLogicContract.GetRestaurantByData("name"), Throws.TypeOf<ElementNotFoundException>());
+        _restaurantStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Never);
+        _restaurantStorageContract.Verify(x => x.GetElementByName(It.IsAny<string>()), Times.Once);
+        _restaurantStorageContract.Verify(x => x.GetElementByOldName(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetRestaurantByData_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _restaurantStorageContract.Setup(x => x.GetElementById(It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+        _restaurantStorageContract.Setup(x => x.GetElementByName(It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _restaurantBuisnessLogicContract.GetRestaurantByData(Guid.NewGuid().ToString()), Throws.TypeOf<StorageException>());
+        Assert.That(() => _restaurantBuisnessLogicContract.GetRestaurantByData("name"), Throws.TypeOf<StorageException>());
+        _restaurantStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Once);
+        _restaurantStorageContract.Verify(x => x.GetElementByName(It.IsAny<string>()), Times.Once);
+        _restaurantStorageContract.Verify(x => x.GetElementByOldName(It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetRestaurantByData_GetByOldName_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _restaurantStorageContract.Setup(x => x.GetElementByOldName(It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _restaurantBuisnessLogicContract.GetRestaurantByData("name"), Throws.TypeOf<StorageException>());
+        _restaurantStorageContract.Verify(x => x.GetElementByName(It.IsAny<string>()), Times.Once);
+        _restaurantStorageContract.Verify(x => x.GetElementByOldName(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void InsertRestaurant_CorrectRecord_Test()
+    {
+        //Arrange
+        var flag = false;
+        var record = new RestaurantDataModel(Guid.NewGuid().ToString(), "name", null, null);
+        _restaurantStorageContract.Setup(x => x.AddElement(It.IsAny<RestaurantDataModel>()))
+            .Callback((RestaurantDataModel x) =>
+            {
+                flag = x.Id == record.Id && x.RestaurantName == record.RestaurantName;
+            });
+        //Act
+        _restaurantBuisnessLogicContract.InsertRestaurant(record);
+        //Assert
+        _restaurantStorageContract.Verify(x => x.AddElement(It.IsAny<RestaurantDataModel>()), Times.Once);
+        Assert.That(flag);
+    }
+
+    [Test]
+    public void InsertRestaurant_RecordWithExistsData_ThrowException_Test()
+    {
+        //Arrange
+        _restaurantStorageContract.Setup(x => x.AddElement(It.IsAny<RestaurantDataModel>())).Throws(new ElementExistsException("Data", "Data"));
+        //Act&Assert
+        Assert.That(() => _restaurantBuisnessLogicContract.InsertRestaurant(new(Guid.NewGuid().ToString(), "name", null, null)), Throws.TypeOf<ElementExistsException>());
+        _restaurantStorageContract.Verify(x => x.AddElement(It.IsAny<RestaurantDataModel>()), Times.Once);
+    }
+
+    [Test]
+    public void InsertRestaurant_NullRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _restaurantBuisnessLogicContract.InsertRestaurant(null), Throws.TypeOf<ArgumentNullException>());
+        _restaurantStorageContract.Verify(x => x.AddElement(It.IsAny<RestaurantDataModel>()), Times.Never);
+    }
+
+    [Test]
+    public void InsertRestaurant_InvalidRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _restaurantBuisnessLogicContract.InsertRestaurant(new RestaurantDataModel("id", "name", null, null)), Throws.TypeOf<ValidationException>());
+        _restaurantStorageContract.Verify(x => x.AddElement(It.IsAny<RestaurantDataModel>()), Times.Never);
+    }
+
+    [Test]
+    public void InsertRestaurant_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _restaurantStorageContract.Setup(x => x.AddElement(It.IsAny<RestaurantDataModel>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _restaurantBuisnessLogicContract.InsertRestaurant(new(Guid.NewGuid().ToString(), "name", null, null)), Throws.TypeOf<StorageException>());
+        _restaurantStorageContract.Verify(x => x.AddElement(It.IsAny<RestaurantDataModel>()), Times.Once);
+    }
+
+    [Test]
+    public void UpdateRestaurant_CorrectRecord_Test()
+    {
+        //Arrange
+        var flag = false;
+        var record = new RestaurantDataModel(Guid.NewGuid().ToString(), "name", null, null);
+        _restaurantStorageContract.Setup(x => x.UpdElement(It.IsAny<RestaurantDataModel>()))
+            .Callback((RestaurantDataModel x) =>
+            {
+                flag = x.Id == record.Id && x.RestaurantName == record.RestaurantName;
+            });
+        //Act
+        _restaurantBuisnessLogicContract.UpdateRestaurant(record);
+        //Assert
+        _restaurantStorageContract.Verify(x => x.UpdElement(It.IsAny<RestaurantDataModel>()), Times.Once);
+        Assert.That(flag);
+    }
+
+    [Test]
+    public void UpdateRestaurant_RecordWithIncorrectData_ThrowException_Test()
+    {
+        //Arrange
+        _restaurantStorageContract.Setup(x => x.UpdElement(It.IsAny<RestaurantDataModel>())).Throws(new ElementNotFoundException(""));
+        //Act&Assert
+        Assert.That(() => _restaurantBuisnessLogicContract.UpdateRestaurant(new(Guid.NewGuid().ToString(), "name", null, null)), Throws.TypeOf<ElementNotFoundException>());
+        _restaurantStorageContract.Verify(x => x.UpdElement(It.IsAny<RestaurantDataModel>()), Times.Once);
+    }
+
+    [Test]
+    public void UpdateRestaurant_RecordWithExistsData_ThrowException_Test()
+    {
+        //Arrange
+        _restaurantStorageContract.Setup(x => x.UpdElement(It.IsAny<RestaurantDataModel>())).Throws(new ElementExistsException("Data", "Data"));
+        //Act&Assert
+        Assert.That(() => _restaurantBuisnessLogicContract.UpdateRestaurant(new(Guid.NewGuid().ToString(), "name", null, null)), Throws.TypeOf<ElementExistsException>());
+        _restaurantStorageContract.Verify(x => x.UpdElement(It.IsAny<RestaurantDataModel>()), Times.Once);
+    }
+
+    [Test]
+    public void UpdateRestaurant_NullRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _restaurantBuisnessLogicContract.UpdateRestaurant(null), Throws.TypeOf<ArgumentNullException>());
+        _restaurantStorageContract.Verify(x => x.UpdElement(It.IsAny<RestaurantDataModel>()), Times.Never);
+    }
+
+    [Test]
+    public void UpdateRestaurant_InvalidRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _restaurantBuisnessLogicContract.UpdateRestaurant(new RestaurantDataModel("id", "name", null, null)), Throws.TypeOf<ValidationException>());
+        _restaurantStorageContract.Verify(x => x.UpdElement(It.IsAny<RestaurantDataModel>()), Times.Never);
+    }
+
+    [Test]
+    public void UpdateRestaurant_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _restaurantStorageContract.Setup(x => x.UpdElement(It.IsAny<RestaurantDataModel>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _restaurantBuisnessLogicContract.UpdateRestaurant(new(Guid.NewGuid().ToString(), "name", null, null)), Throws.TypeOf<StorageException>());
+        _restaurantStorageContract.Verify(x => x.UpdElement(It.IsAny<RestaurantDataModel>()), Times.Once);
+    }
+
+    [Test]
+    public void DeleteRestaurant_CorrectRecord_Test()
+    {
+        //Arrange
+        var id = Guid.NewGuid().ToString();
+        var flag = false;
+        _restaurantStorageContract.Setup(x => x.DelElement(It.Is((string x) => x == id))).Callback(() => { flag = true; });
+        //Act
+        _restaurantBuisnessLogicContract.DeleteRestaurant(id);
+        //Assert
+        _restaurantStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Once);
+        Assert.That(flag);
+    }
+
+    [Test]
+    public void DeleteRestaurant_RecordWithIncorrectId_ThrowException_Test()
+    {
+        //Arrange
+        var id = Guid.NewGuid().ToString();
+        _restaurantStorageContract.Setup(x => x.DelElement(It.IsAny<string>())).Throws(new ElementNotFoundException(id));
+        //Act&Assert
+        Assert.That(() => _restaurantBuisnessLogicContract.DeleteRestaurant(Guid.NewGuid().ToString()), Throws.TypeOf<ElementNotFoundException>());
+        _restaurantStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void DeleteRestaurant_IdIsNullOrEmpty_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _restaurantBuisnessLogicContract.DeleteRestaurant(null), Throws.TypeOf<ArgumentNullException>());
+        Assert.That(() => _restaurantBuisnessLogicContract.DeleteRestaurant(string.Empty), Throws.TypeOf<ArgumentNullException>());
+        _restaurantStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void DeleteRestaurant_IdIsNotGuid_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _restaurantBuisnessLogicContract.DeleteRestaurant("id"), Throws.TypeOf<ValidationException>());
+        _restaurantStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void DeleteRestaurant_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _restaurantStorageContract.Setup(x => x.DelElement(It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _restaurantBuisnessLogicContract.DeleteRestaurant(Guid.NewGuid().ToString()), Throws.TypeOf<StorageException>());
+        _restaurantStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Once);
+    }
+}

SPiluSZharuProject/SPiluSZharuTests/BuisnessLogicContractsTests/SalaryBuisnessLogicContractTests.cs

@@ -0,0 +1,346 @@
+using SPiluSZharuBuisnessLogic.Implementations;
+using SPiluSZharuContracts.DataModels;
+using SPiluSZharuContracts.Enums;
+using SPiluSZharuContracts.Exceptions;
+using SPiluSZharuContracts.StorageContracts;
+using Microsoft.Extensions.Logging;
+using Moq;
+
+namespace SPiluSZharuTests.BuisnessLogicContractsTests;
+
+[TestFixture]
+internal class SalaryBuisnessLogicContractTests
+{
+    private SalaryBuisnessLogicContract _salaryBuisnessLogicContract;
+    private Mock<ISalaryStorageContract> _salaryStorageContract;
+    private Mock<ISaleStorageContract> _saleStorageContract;
+    private Mock<IPostStorageContract> _postStorageContract;
+    private Mock<IWorkerStorageContract> _workerStorageContract;
+
+    [OneTimeSetUp]
+    public void OneTimeSetUp()
+    {
+        _salaryStorageContract = new Mock<ISalaryStorageContract>();
+        _saleStorageContract = new Mock<ISaleStorageContract>();
+        _postStorageContract = new Mock<IPostStorageContract>();
+        _workerStorageContract = new Mock<IWorkerStorageContract>();
+        _salaryBuisnessLogicContract = new SalaryBuisnessLogicContract(_salaryStorageContract.Object,
+            _saleStorageContract.Object, _postStorageContract.Object, _workerStorageContract.Object, new Mock<ILogger>().Object);
+    }
+
+    [SetUp]
+    public void SetUp()
+    {
+        _salaryStorageContract.Reset();
+        _saleStorageContract.Reset();
+        _postStorageContract.Reset();
+        _workerStorageContract.Reset();
+    }
+
+    [Test]
+    public void GetAllSalaries_ReturnListOfRecords_Test()
+    {
+        //Arrange
+        var startDate = DateTime.UtcNow;
+        var endDate = DateTime.UtcNow.AddDays(1);
+        var listOriginal = new List<SalaryDataModel>()
+        {
+            new(Guid.NewGuid().ToString(), DateTime.UtcNow, 10),
+            new(Guid.NewGuid().ToString(), DateTime.UtcNow.AddDays(1), 14),
+            new(Guid.NewGuid().ToString(), DateTime.UtcNow.AddDays(-1), 30),
+        };
+        _salaryStorageContract.Setup(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>())).Returns(listOriginal);
+        //Act
+        var list = _salaryBuisnessLogicContract.GetAllSalariesByPeriod(startDate, endDate);
+        //Assert
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Is.EquivalentTo(listOriginal));
+        _salaryStorageContract.Verify(x => x.GetList(startDate, endDate, null), Times.Once);
+    }
+
+    [Test]
+    public void GetAllSalaries_ReturnEmptyList_Test()
+    {
+        //Arrange
+        _salaryStorageContract.Setup(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>())).Returns([]);
+        //Act
+        var list = _salaryBuisnessLogicContract.GetAllSalariesByPeriod(DateTime.UtcNow, DateTime.UtcNow.AddDays(1));
+        //Assert
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(0));
+        _salaryStorageContract.Verify(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetAllSalaries_IncorrectDates_ThrowException_Test()
+    {
+        //Arrange
+        var dateTime = DateTime.UtcNow;
+        //Act&Assert
+        Assert.That(() => _salaryBuisnessLogicContract.GetAllSalariesByPeriod(dateTime, dateTime), Throws.TypeOf<IncorrectDatesException>());
+        Assert.That(() => _salaryBuisnessLogicContract.GetAllSalariesByPeriod(dateTime, dateTime.AddSeconds(-1)), Throws.TypeOf<IncorrectDatesException>());
+        _salaryStorageContract.Verify(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetAllSalaries_ReturnNull_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _salaryBuisnessLogicContract.GetAllSalariesByPeriod(DateTime.UtcNow, DateTime.UtcNow.AddDays(1)), Throws.TypeOf<NullListException>());
+        _salaryStorageContract.Verify(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetAllSalaries_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _salaryStorageContract.Setup(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _salaryBuisnessLogicContract.GetAllSalariesByPeriod(DateTime.UtcNow, DateTime.UtcNow.AddDays(1)), Throws.TypeOf<StorageException>());
+        _salaryStorageContract.Verify(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetAllSalariesByWorker_ReturnListOfRecords_Test()
+    {
+        //Arrange
+        var startDate = DateTime.UtcNow;
+        var endDate = DateTime.UtcNow.AddDays(1);
+        var workerId = Guid.NewGuid().ToString();
+        var listOriginal = new List<SalaryDataModel>()
+        {
+            new(Guid.NewGuid().ToString(), DateTime.UtcNow, 10),
+            new(Guid.NewGuid().ToString(), DateTime.UtcNow.AddDays(1), 14),
+            new(Guid.NewGuid().ToString(), DateTime.UtcNow.AddDays(-1), 30),
+        };
+        _salaryStorageContract.Setup(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>())).Returns(listOriginal);
+        //Act
+        var list = _salaryBuisnessLogicContract.GetAllSalariesByPeriodByWorker(startDate, endDate, workerId);
+        //Assert
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Is.EquivalentTo(listOriginal));
+        _salaryStorageContract.Verify(x => x.GetList(startDate, endDate, workerId), Times.Once);
+    }
+
+    [Test]
+    public void GetAllSalariesByWorker_ReturnEmptyList_Test()
+    {
+        //Arrange
+        _salaryStorageContract.Setup(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>())).Returns([]);
+        //Act
+        var list = _salaryBuisnessLogicContract.GetAllSalariesByPeriodByWorker(DateTime.UtcNow, DateTime.UtcNow.AddDays(1), Guid.NewGuid().ToString());
+        //Assert
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(0));
+        _salaryStorageContract.Verify(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetAllSalariesByWorker_IncorrectDates_ThrowException_Test()
+    {
+        //Arrange
+        var dateTime = DateTime.UtcNow;
+        //Act&Assert
+        Assert.That(() => _salaryBuisnessLogicContract.GetAllSalariesByPeriodByWorker(dateTime, dateTime, Guid.NewGuid().ToString()), Throws.TypeOf<IncorrectDatesException>());
+        Assert.That(() => _salaryBuisnessLogicContract.GetAllSalariesByPeriodByWorker(dateTime, dateTime.AddSeconds(-1), Guid.NewGuid().ToString()), Throws.TypeOf<IncorrectDatesException>());
+        _salaryStorageContract.Verify(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetAllSalariesByWorker_WorkerIdIsNUllOrEmpty_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _salaryBuisnessLogicContract.GetAllSalariesByPeriodByWorker(DateTime.UtcNow, DateTime.UtcNow.AddDays(1), null), Throws.TypeOf<ArgumentNullException>());
+        Assert.That(() => _salaryBuisnessLogicContract.GetAllSalariesByPeriodByWorker(DateTime.UtcNow, DateTime.UtcNow.AddDays(1), string.Empty), Throws.TypeOf<ArgumentNullException>());
+        _salaryStorageContract.Verify(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetAllSalariesByWorker_WorkerIdIsNotGuid_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _salaryBuisnessLogicContract.GetAllSalariesByPeriodByWorker(DateTime.UtcNow, DateTime.UtcNow.AddDays(1), "workerId"), Throws.TypeOf<ValidationException>());
+        _salaryStorageContract.Verify(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetAllSalariesByWorker_ReturnNull_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _salaryBuisnessLogicContract.GetAllSalariesByPeriodByWorker(DateTime.UtcNow, DateTime.UtcNow.AddDays(1), Guid.NewGuid().ToString()), Throws.TypeOf<NullListException>());
+        _salaryStorageContract.Verify(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetAllSalariesByWorker_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _salaryStorageContract.Setup(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _salaryBuisnessLogicContract.GetAllSalariesByPeriodByWorker(DateTime.UtcNow, DateTime.UtcNow.AddDays(1), Guid.NewGuid().ToString()), Throws.TypeOf<StorageException>());
+        _salaryStorageContract.Verify(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void CalculateSalaryByMounth_CalculateSalary_Test()
+    {
+        //Arrange
+        var workerId = Guid.NewGuid().ToString();
+        var saleSum = 200.0;
+        var postSalary = 2000.0;
+        _saleStorageContract.Setup(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>()))
+            .Returns([new SaleDataModel(Guid.NewGuid().ToString(), workerId, null, saleSum, false, [])]);
+        _postStorageContract.Setup(x => x.GetElementById(It.IsAny<string>()))
+            .Returns(new PostDataModel(Guid.NewGuid().ToString(), "name", PostType.DeliveryMan, postSalary, true, DateTime.UtcNow));
+        _workerStorageContract.Setup(x => x.GetList(It.IsAny<bool>(), It.IsAny<string?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>()))
+            .Returns([new WorkerDataModel(workerId, "Test", Guid.NewGuid().ToString(), "+7(777)777-77-77", DateTime.UtcNow, DateTime.UtcNow, false)]);
+        var sum = 0.0;
+        var expectedSum = postSalary + saleSum * 0.1;
+        _salaryStorageContract.Setup(x => x.AddElement(It.IsAny<SalaryDataModel>()))
+            .Callback((SalaryDataModel x) =>
+            {
+                sum = x.Salary;
+            });
+        //Act
+        _salaryBuisnessLogicContract.CalculateSalaryByMounth(DateTime.UtcNow);
+        //Assert
+        Assert.That(sum, Is.EqualTo(expectedSum));
+    }
+
+    [Test]
+    public void CalculateSalaryByMounth_WithSeveralWorkers_Test()
+    {
+        //Arrange
+        var worker1Id = Guid.NewGuid().ToString();
+        var worker2Id = Guid.NewGuid().ToString();
+        var worker3Id = Guid.NewGuid().ToString();
+        var list = new List<WorkerDataModel>() {
+            new(worker1Id, "Test", Guid.NewGuid().ToString(), "+7(777)777-77-77", DateTime.UtcNow, DateTime.UtcNow, false),
+            new(worker2Id, "Test", Guid.NewGuid().ToString(), "+7(555)555-55-55", DateTime.UtcNow, DateTime.UtcNow, false),
+            new(worker3Id, "Test", Guid.NewGuid().ToString(), "+7(333)333-33-33", DateTime.UtcNow, DateTime.UtcNow, false)
+        };
+        _saleStorageContract.Setup(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>()))
+            .Returns([new SaleDataModel(Guid.NewGuid().ToString(), worker1Id, null, 1, false, []),
+            new SaleDataModel(Guid.NewGuid().ToString(), worker1Id, null, 1, false, []),
+            new SaleDataModel(Guid.NewGuid().ToString(), worker2Id, null, 1, false, []),
+            new SaleDataModel(Guid.NewGuid().ToString(), worker3Id, null, 1, false, []),
+            new SaleDataModel(Guid.NewGuid().ToString(), worker3Id, null, 1, false, [])]);
+        _postStorageContract.Setup(x => x.GetElementById(It.IsAny<string>()))
+            .Returns(new PostDataModel(Guid.NewGuid().ToString(), "name", PostType.DeliveryMan, 2000, true, DateTime.UtcNow));
+        _workerStorageContract.Setup(x => x.GetList(It.IsAny<bool>(), It.IsAny<string?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>()))
+            .Returns(list);
+        //Act
+        _salaryBuisnessLogicContract.CalculateSalaryByMounth(DateTime.UtcNow);
+        //Assert
+        _salaryStorageContract.Verify(x => x.AddElement(It.IsAny<SalaryDataModel>()), Times.Exactly(list.Count));
+    }
+
+    [Test]
+    public void CalculateSalaryByMounth_WithoitSalesByWorker_Test()
+    {
+        //Arrange
+        var postSalary = 2000.0;
+        var workerId = Guid.NewGuid().ToString();
+        _saleStorageContract.Setup(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>()))
+            .Returns([]);
+        _postStorageContract.Setup(x => x.GetElementById(It.IsAny<string>()))
+            .Returns(new PostDataModel(Guid.NewGuid().ToString(), "name", PostType.DeliveryMan, postSalary, true, DateTime.UtcNow));
+        _workerStorageContract.Setup(x => x.GetList(It.IsAny<bool>(), It.IsAny<string?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>()))
+            .Returns([new WorkerDataModel(workerId, "Test", Guid.NewGuid().ToString(), "+7(777)777-77-77", DateTime.UtcNow, DateTime.UtcNow, false)]);
+        var sum = 0.0;
+        var expectedSum = postSalary;
+        _salaryStorageContract.Setup(x => x.AddElement(It.IsAny<SalaryDataModel>()))
+            .Callback((SalaryDataModel x) =>
+            {
+                sum = x.Salary;
+            });
+        //Act
+        _salaryBuisnessLogicContract.CalculateSalaryByMounth(DateTime.UtcNow);
+        //Assert
+        Assert.That(sum, Is.EqualTo(expectedSum));
+    }
+
+    [Test]
+    public void CalculateSalaryByMounth_SaleStorageReturnNull_ThrowException_Test()
+    {
+        //Arrange
+        var workerId = Guid.NewGuid().ToString();
+        _postStorageContract.Setup(x => x.GetElementById(It.IsAny<string>()))
+            .Returns(new PostDataModel(Guid.NewGuid().ToString(), "name", PostType.DeliveryMan, 2000, true, DateTime.UtcNow));
+        _workerStorageContract.Setup(x => x.GetList(It.IsAny<bool>(), It.IsAny<string?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>()))
+            .Returns([new WorkerDataModel(workerId, "Test", Guid.NewGuid().ToString(), "+7(777)777-77-77", DateTime.UtcNow, DateTime.UtcNow, false)]);
+        //Act&Assert
+        Assert.That(() => _salaryBuisnessLogicContract.CalculateSalaryByMounth(DateTime.UtcNow), Throws.TypeOf<NullListException>());
+    }
+
+    [Test]
+    public void CalculateSalaryByMounth_PostStorageReturnNull_ThrowException_Test()
+    {
+        //Arrange
+        var workerId = Guid.NewGuid().ToString();
+        _saleStorageContract.Setup(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>()))
+            .Returns([new SaleDataModel(Guid.NewGuid().ToString(), workerId, null, 200, false, [])]);
+        _workerStorageContract.Setup(x => x.GetList(It.IsAny<bool>(), It.IsAny<string?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>()))
+            .Returns([new WorkerDataModel(workerId, "Test", Guid.NewGuid().ToString(), "+7(777)777-77-77", DateTime.UtcNow, DateTime.UtcNow, false)]);
+        //Act&Assert
+        Assert.That(() => _salaryBuisnessLogicContract.CalculateSalaryByMounth(DateTime.UtcNow), Throws.TypeOf<NullListException>());
+    }
+
+    [Test]
+    public void CalculateSalaryByMounth_WorkerStorageReturnNull_ThrowException_Test()
+    {
+        //Arrange
+        var workerId = Guid.NewGuid().ToString();
+        _saleStorageContract.Setup(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>()))
+            .Returns([new SaleDataModel(Guid.NewGuid().ToString(), workerId, null, 200, false, [])]);
+        _postStorageContract.Setup(x => x.GetElementById(It.IsAny<string>()))
+            .Returns(new PostDataModel(Guid.NewGuid().ToString(), "name", PostType.DeliveryMan, 2000, true, DateTime.UtcNow));
+        //Act&Assert
+        Assert.That(() => _salaryBuisnessLogicContract.CalculateSalaryByMounth(DateTime.UtcNow), Throws.TypeOf<NullListException>());
+    }
+
+    [Test]
+    public void CalculateSalaryByMounth_SaleStorageThrowException_ThrowException_Test()
+    {
+        //Arrange
+        var workerId = Guid.NewGuid().ToString();
+        _saleStorageContract.Setup(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>()))
+            .Throws(new StorageException(new InvalidOperationException()));
+        _postStorageContract.Setup(x => x.GetElementById(It.IsAny<string>()))
+            .Returns(new PostDataModel(Guid.NewGuid().ToString(), "name", PostType.DeliveryMan, 2000, true, DateTime.UtcNow));
+        _workerStorageContract.Setup(x => x.GetList(It.IsAny<bool>(), It.IsAny<string?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>()))
+            .Returns([new WorkerDataModel(workerId, "Test", Guid.NewGuid().ToString(), "+7(777)777-77-77", DateTime.UtcNow, DateTime.UtcNow, false)]);
+        //Act&Assert
+        Assert.That(() => _salaryBuisnessLogicContract.CalculateSalaryByMounth(DateTime.UtcNow), Throws.TypeOf<StorageException>());
+    }
+
+    [Test]
+    public void CalculateSalaryByMounth_PostStorageThrowException_ThrowException_Test()
+    {
+        //Arrange
+        var workerId = Guid.NewGuid().ToString();
+        _saleStorageContract.Setup(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>()))
+            .Returns([new SaleDataModel(Guid.NewGuid().ToString(), workerId, null, 200, false, [])]);
+        _postStorageContract.Setup(x => x.GetElementById(It.IsAny<string>()))
+            .Throws(new StorageException(new InvalidOperationException()));
+        _workerStorageContract.Setup(x => x.GetList(It.IsAny<bool>(), It.IsAny<string?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>()))
+            .Returns([new WorkerDataModel(workerId, "Test", Guid.NewGuid().ToString(), "+7(777)777-77-77", DateTime.UtcNow, DateTime.UtcNow, false)]);
+        //Act&Assert
+        Assert.That(() => _salaryBuisnessLogicContract.CalculateSalaryByMounth(DateTime.UtcNow), Throws.TypeOf<StorageException>());
+    }
+
+    [Test]
+    public void CalculateSalaryByMounth_WorkerStorageThrowException_ThrowException_Test()
+    {
+        //Arrange
+        var workerId = Guid.NewGuid().ToString();
+        _saleStorageContract.Setup(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>()))
+            .Returns([new SaleDataModel(Guid.NewGuid().ToString(), workerId, null, 200, false, [])]);
+        _postStorageContract.Setup(x => x.GetElementById(It.IsAny<string>()))
+            .Returns(new PostDataModel(Guid.NewGuid().ToString(), "name", PostType.DeliveryMan, 2000, true, DateTime.UtcNow));
+        _workerStorageContract.Setup(x => x.GetList(It.IsAny<bool>(), It.IsAny<string?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>()))
+            .Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _salaryBuisnessLogicContract.CalculateSalaryByMounth(DateTime.UtcNow), Throws.TypeOf<StorageException>());
+    }
+}

SPiluSZharuProject/SPiluSZharuTests/BuisnessLogicContractsTests/SaleBuisnessLogicContractTests.cs

@@ -0,0 +1,498 @@
+using SPiluSZharuBuisnessLogic.Implementations;
+using SPiluSZharuContracts.DataModels;
+using SPiluSZharuContracts.Exceptions;
+using SPiluSZharuContracts.StorageContracts;
+using Microsoft.Extensions.Logging;
+using Moq;
+
+namespace SPiluSZharuTests.BuisnessLogicContractsTests;
+
+[TestFixture]
+internal class SaleBuisnessLogicContractTests
+{
+    private SaleBuisnessLogicContract _saleBuisnessLogicContract;
+    private Mock<ISaleStorageContract> _saleStorageContract;
+
+    [OneTimeSetUp]
+    public void OneTimeSetUp()
+    {
+        _saleStorageContract = new Mock<ISaleStorageContract>();
+        _saleBuisnessLogicContract = new SaleBuisnessLogicContract(_saleStorageContract.Object, new Mock<ILogger>().Object);
+    }
+
+    [SetUp]
+    public void SetUp()
+    {
+        _saleStorageContract.Reset();
+    }
+
+    [Test]
+    public void GetAllSalesByPeriod_ReturnListOfRecords_Test()
+    {
+        //Arrange
+        var date = DateTime.UtcNow;
+        var listOriginal = new List<SaleDataModel>()
+        {
+            new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), null, 10, false,
+                [new SaleProductDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 5)]),
+            new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), null, 10, false, []),
+            new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), null, 10, false, []),
+        };
+        _saleStorageContract.Setup(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>())).Returns(listOriginal);
+        //Act
+        var list = _saleBuisnessLogicContract.GetAllSalesByPeriod(date, date.AddDays(1));
+        //Assert
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Is.EquivalentTo(listOriginal));
+        _saleStorageContract.Verify(x => x.GetList(date, date.AddDays(1), null, null, null), Times.Once);
+    }
+
+    [Test]
+    public void GetAllSalesByPeriod_ReturnEmptyList_Test()
+    {
+        //Arrange
+        _saleStorageContract.Setup(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>())).Returns([]);
+        //Act
+        var list = _saleBuisnessLogicContract.GetAllSalesByPeriod(DateTime.UtcNow, DateTime.UtcNow.AddDays(1));
+        //Assert
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(0));
+        _saleStorageContract.Verify(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetAllSalesByPeriod_IncorrectDates_ThrowException_Test()
+    {
+        //Arrange
+        var date = DateTime.UtcNow;
+        //Act&Assert
+        Assert.That(() => _saleBuisnessLogicContract.GetAllSalesByPeriod(date, date), Throws.TypeOf<IncorrectDatesException>());
+        Assert.That(() => _saleBuisnessLogicContract.GetAllSalesByPeriod(date, date.AddSeconds(-1)), Throws.TypeOf<IncorrectDatesException>());
+        _saleStorageContract.Verify(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetAllSalesByPeriod_ReturnNull_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _saleBuisnessLogicContract.GetAllSalesByPeriod(DateTime.UtcNow, DateTime.UtcNow.AddDays(1)), Throws.TypeOf<NullListException>());
+        _saleStorageContract.Verify(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetAllSalesByPeriod_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _saleStorageContract.Setup(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _saleBuisnessLogicContract.GetAllSalesByPeriod(DateTime.UtcNow, DateTime.UtcNow.AddDays(1)), Throws.TypeOf<StorageException>());
+        _saleStorageContract.Verify(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetAllSalesByWorkerByPeriod_ReturnListOfRecords_Test()
+    {
+        //Arrange
+        var date = DateTime.UtcNow;
+        var workerId = Guid.NewGuid().ToString();
+        var listOriginal = new List<SaleDataModel>()
+        {
+            new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), null, 10, false,
+                [new SaleProductDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 5)]),
+            new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), null, 10, false, []),
+            new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), null, 10, false, []),
+        };
+        _saleStorageContract.Setup(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>())).Returns(listOriginal);
+        //Act
+        var list = _saleBuisnessLogicContract.GetAllSalesByWorkerByPeriod(workerId, date, date.AddDays(1));
+        //Assert
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Is.EquivalentTo(listOriginal));
+        _saleStorageContract.Verify(x => x.GetList(date, date.AddDays(1), workerId, null, null), Times.Once);
+    }
+
+    [Test]
+    public void GetAllSalesByWorkerByPeriod_ReturnEmptyList_Test()
+    {
+        //Arrange
+        _saleStorageContract.Setup(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>())).Returns([]);
+        //Act
+        var list = _saleBuisnessLogicContract.GetAllSalesByWorkerByPeriod(Guid.NewGuid().ToString(), DateTime.UtcNow, DateTime.UtcNow.AddDays(1));
+        //Assert
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(0));
+        _saleStorageContract.Verify(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetAllSalesByWorkerByPeriod_IncorrectDates_ThrowException_Test()
+    {
+        //Arrange
+        var date = DateTime.UtcNow;
+        //Act&Assert
+        Assert.That(() => _saleBuisnessLogicContract.GetAllSalesByWorkerByPeriod(Guid.NewGuid().ToString(), date, date), Throws.TypeOf<IncorrectDatesException>());
+        Assert.That(() => _saleBuisnessLogicContract.GetAllSalesByWorkerByPeriod(Guid.NewGuid().ToString(), date, date.AddSeconds(-1)), Throws.TypeOf<IncorrectDatesException>());
+        _saleStorageContract.Verify(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetAllSalesByWorkerByPeriod_WorkerIdIsNullOrEmpty_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _saleBuisnessLogicContract.GetAllSalesByWorkerByPeriod(null, DateTime.UtcNow, DateTime.UtcNow.AddDays(1)), Throws.TypeOf<ArgumentNullException>());
+        Assert.That(() => _saleBuisnessLogicContract.GetAllSalesByWorkerByPeriod(string.Empty, DateTime.UtcNow, DateTime.UtcNow.AddDays(1)), Throws.TypeOf<ArgumentNullException>());
+        _saleStorageContract.Verify(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetAllSalesByWorkerByPeriod_WorkerIdIsNotGuid_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _saleBuisnessLogicContract.GetAllSalesByWorkerByPeriod("workerId", DateTime.UtcNow, DateTime.UtcNow.AddDays(1)), Throws.TypeOf<ValidationException>());
+        _saleStorageContract.Verify(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetAllSalesByWorkerByPeriod_ReturnNull_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _saleBuisnessLogicContract.GetAllSalesByWorkerByPeriod(Guid.NewGuid().ToString(), DateTime.UtcNow, DateTime.UtcNow.AddDays(1)), Throws.TypeOf<NullListException>());
+        _saleStorageContract.Verify(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetAllSalesByWorkerByPeriod_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _saleStorageContract.Setup(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _saleBuisnessLogicContract.GetAllSalesByWorkerByPeriod(Guid.NewGuid().ToString(), DateTime.UtcNow, DateTime.UtcNow.AddDays(1)), Throws.TypeOf<StorageException>());
+        _saleStorageContract.Verify(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetAllSalesByRestaurantByPeriod_ReturnListOfRecords_Test()
+    {
+        //Arrange
+        var date = DateTime.UtcNow;
+        var restaurantId = Guid.NewGuid().ToString();
+        var listOriginal = new List<SaleDataModel>()
+        {
+            new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), null, 10, false,
+                [new SaleProductDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 5)]),
+            new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), null, 10, false, []),
+            new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), null, 10, false, []),
+        };
+        _saleStorageContract.Setup(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>())).Returns(listOriginal);
+        //Act
+        var list = _saleBuisnessLogicContract.GetAllSalesByRestaurantByPeriod(restaurantId, date, date.AddDays(1));
+        //Assert
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Is.EquivalentTo(listOriginal));
+        _saleStorageContract.Verify(x => x.GetList(date, date.AddDays(1), null, restaurantId, null), Times.Once);
+    }
+
+    [Test]
+    public void GetAllSalesByRestaurantByPeriod_ReturnEmptyList_Test()
+    {
+        //Arrange
+        _saleStorageContract.Setup(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>())).Returns([]);
+        //Act
+        var list = _saleBuisnessLogicContract.GetAllSalesByRestaurantByPeriod(Guid.NewGuid().ToString(), DateTime.UtcNow, DateTime.UtcNow.AddDays(1));
+        //Assert
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(0));
+        _saleStorageContract.Verify(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetAllSalesByRestaurantByPeriod_IncorrectDates_ThrowException_Test()
+    {
+        //Arrange
+        var date = DateTime.UtcNow;
+        //Act&Assert
+        Assert.That(() => _saleBuisnessLogicContract.GetAllSalesByRestaurantByPeriod(Guid.NewGuid().ToString(), date, date), Throws.TypeOf<IncorrectDatesException>());
+        Assert.That(() => _saleBuisnessLogicContract.GetAllSalesByRestaurantByPeriod(Guid.NewGuid().ToString(), date, date.AddSeconds(-1)), Throws.TypeOf<IncorrectDatesException>());
+        _saleStorageContract.Verify(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetAllSalesByRestaurantByPeriod_RestaurantIdIsNullOrEmpty_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _saleBuisnessLogicContract.GetAllSalesByRestaurantByPeriod(null, DateTime.UtcNow, DateTime.UtcNow.AddDays(1)), Throws.TypeOf<ArgumentNullException>());
+        Assert.That(() => _saleBuisnessLogicContract.GetAllSalesByRestaurantByPeriod(string.Empty, DateTime.UtcNow, DateTime.UtcNow.AddDays(1)), Throws.TypeOf<ArgumentNullException>());
+        _saleStorageContract.Verify(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetAllSalesByRestaurantByPeriod_RestaurantIdIsNotGuid_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _saleBuisnessLogicContract.GetAllSalesByRestaurantByPeriod("restaurantId", DateTime.UtcNow, DateTime.UtcNow.AddDays(1)), Throws.TypeOf<ValidationException>());
+        _saleStorageContract.Verify(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetAllSalesByRestaurantByPeriod_ReturnNull_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _saleBuisnessLogicContract.GetAllSalesByRestaurantByPeriod(Guid.NewGuid().ToString(), DateTime.UtcNow, DateTime.UtcNow.AddDays(1)), Throws.TypeOf<NullListException>());
+        _saleStorageContract.Verify(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetAllSalesByRestaurantByPeriod_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _saleStorageContract.Setup(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _saleBuisnessLogicContract.GetAllSalesByRestaurantByPeriod(Guid.NewGuid().ToString(), DateTime.UtcNow, DateTime.UtcNow.AddDays(1)), Throws.TypeOf<StorageException>());
+        _saleStorageContract.Verify(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetAllSalesByProductByPeriod_ReturnListOfRecords_Test()
+    {
+        //Arrange
+        var date = DateTime.UtcNow;
+        var productId = Guid.NewGuid().ToString();
+        var listOriginal = new List<SaleDataModel>()
+        {
+            new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), null, 10, false,
+                [new SaleProductDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 5)]),
+            new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), null, 10, false, []),
+            new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), null, 10, false, []),
+        };
+        _saleStorageContract.Setup(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>())).Returns(listOriginal);
+        //Act
+        var list = _saleBuisnessLogicContract.GetAllSalesByProductByPeriod(productId, date, date.AddDays(1));
+        //Assert
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Is.EquivalentTo(listOriginal));
+        _saleStorageContract.Verify(x => x.GetList(date, date.AddDays(1), null, null, productId), Times.Once);
+    }
+
+    [Test]
+    public void GetAllSalesByProductByPeriod_ReturnEmptyList_Test()
+    {
+        //Arrange
+        _saleStorageContract.Setup(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>())).Returns([]);
+        //Act
+        var list = _saleBuisnessLogicContract.GetAllSalesByProductByPeriod(Guid.NewGuid().ToString(), DateTime.UtcNow, DateTime.UtcNow.AddDays(1));
+        //Assert
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(0));
+        _saleStorageContract.Verify(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetAllSalesByProductByPeriod_IncorrectDates_ThrowException_Test()
+    {
+        //Arrange
+        var date = DateTime.UtcNow;
+        //Act&Assert
+        Assert.That(() => _saleBuisnessLogicContract.GetAllSalesByProductByPeriod(Guid.NewGuid().ToString(), date, date), Throws.TypeOf<IncorrectDatesException>());
+        Assert.That(() => _saleBuisnessLogicContract.GetAllSalesByProductByPeriod(Guid.NewGuid().ToString(), date, date.AddSeconds(-1)), Throws.TypeOf<IncorrectDatesException>());
+        _saleStorageContract.Verify(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetAllSalesByProductByPeriod_ProductIdIsNullOrEmpty_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _saleBuisnessLogicContract.GetAllSalesByProductByPeriod(null, DateTime.UtcNow, DateTime.UtcNow.AddDays(1)), Throws.TypeOf<ArgumentNullException>());
+        Assert.That(() => _saleBuisnessLogicContract.GetAllSalesByProductByPeriod(string.Empty, DateTime.UtcNow, DateTime.UtcNow.AddDays(1)), Throws.TypeOf<ArgumentNullException>());
+        _saleStorageContract.Verify(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetAllSalesByProductByPeriod_ProductIdIsNotGuid_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _saleBuisnessLogicContract.GetAllSalesByProductByPeriod("productId", DateTime.UtcNow, DateTime.UtcNow.AddDays(1)), Throws.TypeOf<ValidationException>());
+        _saleStorageContract.Verify(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetAllSalesByProductByPeriod_ReturnNull_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _saleBuisnessLogicContract.GetAllSalesByProductByPeriod(Guid.NewGuid().ToString(), DateTime.UtcNow, DateTime.UtcNow.AddDays(1)), Throws.TypeOf<NullListException>());
+        _saleStorageContract.Verify(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetAllSalesByProductByPeriod_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _saleStorageContract.Setup(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _saleBuisnessLogicContract.GetAllSalesByProductByPeriod(Guid.NewGuid().ToString(), DateTime.UtcNow, DateTime.UtcNow.AddDays(1)), Throws.TypeOf<StorageException>());
+        _saleStorageContract.Verify(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetSaleByData_GetById_ReturnRecord_Test()
+    {
+        //Arrange
+        var id = Guid.NewGuid().ToString();
+        var record = new SaleDataModel(id, Guid.NewGuid().ToString(), null, 10, false,
+                [new SaleProductDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 5)]);
+        _saleStorageContract.Setup(x => x.GetElementById(id)).Returns(record);
+        //Act
+        var element = _saleBuisnessLogicContract.GetSaleByData(id);
+        //Assert
+        Assert.That(element, Is.Not.Null);
+        Assert.That(element.Id, Is.EqualTo(id));
+        _saleStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetSaleByData_EmptyData_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _saleBuisnessLogicContract.GetSaleByData(null), Throws.TypeOf<ArgumentNullException>());
+        Assert.That(() => _saleBuisnessLogicContract.GetSaleByData(string.Empty), Throws.TypeOf<ArgumentNullException>());
+        _saleStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetSaleByData_IdIsNotGuid_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _saleBuisnessLogicContract.GetSaleByData("saleId"), Throws.TypeOf<ValidationException>());
+        _saleStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetSaleByData_GetById_NotFoundRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _saleBuisnessLogicContract.GetSaleByData(Guid.NewGuid().ToString()), Throws.TypeOf<ElementNotFoundException>());
+        _saleStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetSaleByData_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _saleStorageContract.Setup(x => x.GetElementById(It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _saleBuisnessLogicContract.GetSaleByData(Guid.NewGuid().ToString()), Throws.TypeOf<StorageException>());
+        _saleStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void InsertSale_CorrectRecord_Test()
+    {
+        //Arrange
+        var flag = false;
+        var record = new SaleDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 10, 
+            false, [new SaleProductDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 5)]);
+        _saleStorageContract.Setup(x => x.AddElement(It.IsAny<SaleDataModel>()))
+            .Callback((SaleDataModel x) =>
+            {
+                flag = x.Id == record.Id && x.WorkerId == record.WorkerId && x.RestaurantId == record.RestaurantId &&
+                    x.SaleDate == record.SaleDate && x.Sum == record.Sum && x.IsCancel == record.IsCancel && x.Products.Count == record.Products.Count &&
+                    x.Products.First().ProductId == record.Products.First().ProductId &&
+                    x.Products.First().SaleId == record.Products.First().SaleId &&
+                    x.Products.First().Count == record.Products.First().Count;
+            });
+        //Act
+        _saleBuisnessLogicContract.InsertSale(record);
+        //Assert
+        _saleStorageContract.Verify(x => x.AddElement(It.IsAny<SaleDataModel>()), Times.Once);
+        Assert.That(flag);
+    }
+
+    [Test]
+    public void InsertSale_RecordWithExistsData_ThrowException_Test()
+    {
+        //Arrange
+        _saleStorageContract.Setup(x => x.AddElement(It.IsAny<SaleDataModel>())).Throws(new ElementExistsException("Data", "Data"));
+        //Act&Assert
+        Assert.That(() => _saleBuisnessLogicContract.InsertSale(new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(),
+            Guid.NewGuid().ToString(), 10, false, [new SaleProductDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 5)])), Throws.TypeOf<ElementExistsException>());
+        _saleStorageContract.Verify(x => x.AddElement(It.IsAny<SaleDataModel>()), Times.Once);
+    }
+
+    [Test]
+    public void InsertSale_NullRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _saleBuisnessLogicContract.InsertSale(null), Throws.TypeOf<ArgumentNullException>());
+        _saleStorageContract.Verify(x => x.AddElement(It.IsAny<SaleDataModel>()), Times.Never);
+    }
+
+    [Test]
+    public void InsertSale_InvalidRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _saleBuisnessLogicContract.InsertSale(new SaleDataModel("id", Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 10, false, [])), Throws.TypeOf<ValidationException>());
+        _saleStorageContract.Verify(x => x.AddElement(It.IsAny<SaleDataModel>()), Times.Never);
+    }
+
+    [Test]
+    public void InsertSale_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _saleStorageContract.Setup(x => x.AddElement(It.IsAny<SaleDataModel>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _saleBuisnessLogicContract.InsertSale(new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(),
+            Guid.NewGuid().ToString(), 10, false, [new SaleProductDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 5)])), Throws.TypeOf<StorageException>());
+        _saleStorageContract.Verify(x => x.AddElement(It.IsAny<SaleDataModel>()), Times.Once);
+    }
+
+    [Test]
+    public void CancelSale_CorrectRecord_Test()
+    {
+        //Arrange
+        var id = Guid.NewGuid().ToString();
+        var flag = false;
+        _saleStorageContract.Setup(x => x.DelElement(It.Is((string x) => x == id))).Callback(() => { flag = true; });
+        //Act
+        _saleBuisnessLogicContract.CancelSale(id);
+        //Assert
+        _saleStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Once);
+        Assert.That(flag);
+    }
+
+    [Test]
+    public void CancelSale_RecordWithIncorrectId_ThrowException_Test()
+    {
+        //Arrange
+        var id = Guid.NewGuid().ToString();
+        _saleStorageContract.Setup(x => x.DelElement(It.IsAny<string>())).Throws(new ElementNotFoundException(id));
+        //Act&Assert
+        Assert.That(() => _saleBuisnessLogicContract.CancelSale(Guid.NewGuid().ToString()), Throws.TypeOf<ElementNotFoundException>());
+        _saleStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void CancelSale_IdIsNullOrEmpty_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _saleBuisnessLogicContract.CancelSale(null), Throws.TypeOf<ArgumentNullException>());
+        Assert.That(() => _saleBuisnessLogicContract.CancelSale(string.Empty), Throws.TypeOf<ArgumentNullException>());
+        _saleStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void CancelSale_IdIsNotGuid_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _saleBuisnessLogicContract.CancelSale("id"), Throws.TypeOf<ValidationException>());
+        _saleStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void CancelSale_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _saleStorageContract.Setup(x => x.DelElement(It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _saleBuisnessLogicContract.CancelSale(Guid.NewGuid().ToString()), Throws.TypeOf<StorageException>());
+        _saleStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Once);
+    }
+}

SPiluSZharuProject/SPiluSZharuTests/BuisnessLogicContractsTests/WorkerBuisnessLogicContractTests.cs

@@ -0,0 +1,587 @@
+using SPiluSZharuBuisnessLogic.Implementations;
+using SPiluSZharuContracts.DataModels;
+using SPiluSZharuContracts.Exceptions;
+using SPiluSZharuContracts.StorageContracts;
+using Microsoft.Extensions.Logging;
+using Moq;
+
+namespace SPiluSZharuTests.BuisnessLogicContractsTests;
+
+[TestFixture]
+internal class WorkerBuisnessLogicContractTests
+{
+    private WorkerBuisnessLogicContract _workerBuisnessLogicContract;
+    private Mock<IWorkerStorageContract> _workerStorageContract;
+
+    [OneTimeSetUp]
+    public void OneTimeSetUp()
+    {
+        _workerStorageContract = new Mock<IWorkerStorageContract>();
+        _workerBuisnessLogicContract = new WorkerBuisnessLogicContract(_workerStorageContract.Object, new Mock<ILogger>().Object);
+    }
+
+    [SetUp]
+    public void SetUp()
+    {
+        _workerStorageContract.Reset();
+    }
+
+    [Test]
+    public void GetAllWorkers_ReturnListOfRecords_Test()
+    {
+        //Arrange
+        var listOriginal = new List<WorkerDataModel>()
+        {
+            new(Guid.NewGuid().ToString(), "fio 1", Guid.NewGuid().ToString(), "+7(777)777-77-77", DateTime.Now.AddYears(-16).AddDays(-1), DateTime.Now, false),
+            new(Guid.NewGuid().ToString(), "fio 2", Guid.NewGuid().ToString(), "+7(555)555-55-55", DateTime.Now.AddYears(-16).AddDays(-1), DateTime.Now, true),
+            new(Guid.NewGuid().ToString(), "fio 3", Guid.NewGuid().ToString(), "+7(333)333-33-33", DateTime.Now.AddYears(-16).AddDays(-1), DateTime.Now, false),
+        };
+        _workerStorageContract.Setup(x => x.GetList(It.IsAny<bool>(), It.IsAny<string?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>())).Returns(listOriginal);
+        //Act
+        var listOnlyActive = _workerBuisnessLogicContract.GetAllWorkers(true);
+        var list = _workerBuisnessLogicContract.GetAllWorkers(false);
+        //Assert
+        Assert.Multiple(() =>
+        {
+            Assert.That(listOnlyActive, Is.Not.Null);
+            Assert.That(list, Is.Not.Null);
+            Assert.That(listOnlyActive, Is.EquivalentTo(listOriginal));
+            Assert.That(list, Is.EquivalentTo(listOriginal));
+        });
+        _workerStorageContract.Verify(x => x.GetList(true, null, null, null, null, null), Times.Once);
+        _workerStorageContract.Verify(x => x.GetList(false, null, null, null, null, null), Times.Once);
+    }
+
+    [Test]
+    public void GetAllWorkers_ReturnEmptyList_Test()
+    {
+        //Arrange
+        _workerStorageContract.Setup(x => x.GetList(It.IsAny<bool>(), It.IsAny<string?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>())).Returns([]);
+        //Act
+        var listOnlyActive = _workerBuisnessLogicContract.GetAllWorkers(true);
+        var list = _workerBuisnessLogicContract.GetAllWorkers(false);
+        //Assert
+        Assert.Multiple(() =>
+        {
+            Assert.That(listOnlyActive, Is.Not.Null);
+            Assert.That(list, Is.Not.Null);
+            Assert.That(listOnlyActive, Has.Count.EqualTo(0));
+            Assert.That(list, Has.Count.EqualTo(0));
+        });
+        _workerStorageContract.Verify(x => x.GetList(It.IsAny<bool>(), null, null, null, null, null), Times.Exactly(2));
+    }
+
+    [Test]
+    public void GetAllWorkers_ReturnNull_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _workerBuisnessLogicContract.GetAllWorkers(It.IsAny<bool>()), Throws.TypeOf<NullListException>());
+        _workerStorageContract.Verify(x => x.GetList(It.IsAny<bool>(), It.IsAny<string?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>()), Times.Once);
+    }
+
+    [Test]
+    public void GetAllWorkers_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _workerStorageContract.Setup(x => x.GetList(It.IsAny<bool>(), It.IsAny<string?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _workerBuisnessLogicContract.GetAllWorkers(It.IsAny<bool>()), Throws.TypeOf<StorageException>());
+        _workerStorageContract.Verify(x => x.GetList(It.IsAny<bool>(), null, null, null, null, null), Times.Once);
+    }
+
+    [Test]
+    public void GetAllWorkersByPost_ReturnListOfRecords_Test()
+    {
+        //Arrange
+        var postId = Guid.NewGuid().ToString();
+        var listOriginal = new List<WorkerDataModel>()
+        {
+            new(Guid.NewGuid().ToString(), "fio 1", Guid.NewGuid().ToString(), "+7(777)777-77-77", DateTime.Now.AddYears(-16).AddDays(-1), DateTime.Now, false),
+            new(Guid.NewGuid().ToString(), "fio 2", Guid.NewGuid().ToString(), "+7(555)555-55-55", DateTime.Now.AddYears(-16).AddDays(-1), DateTime.Now, true),
+            new(Guid.NewGuid().ToString(), "fio 3", Guid.NewGuid().ToString(), "+7(333)333-33-33", DateTime.Now.AddYears(-16).AddDays(-1), DateTime.Now, false),
+        };
+        _workerStorageContract.Setup(x => x.GetList(It.IsAny<bool>(), It.IsAny<string?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>())).Returns(listOriginal);
+        //Act
+        var listOnlyActive = _workerBuisnessLogicContract.GetAllWorkersByPost(postId, true);
+        var list = _workerBuisnessLogicContract.GetAllWorkersByPost(postId, false);
+        //Assert
+        Assert.Multiple(() =>
+        {
+            Assert.That(listOnlyActive, Is.Not.Null);
+            Assert.That(list, Is.Not.Null);
+            Assert.That(listOnlyActive, Is.EquivalentTo(listOriginal));
+            Assert.That(list, Is.EquivalentTo(listOriginal));
+        });
+        _workerStorageContract.Verify(x => x.GetList(true, postId, null, null, null, null), Times.Once);
+        _workerStorageContract.Verify(x => x.GetList(false, postId, null, null, null, null), Times.Once);
+    }
+
+    [Test]
+    public void GetAllWorkersByPost_ReturnEmptyList_Test()
+    {
+        //Arrange
+        _workerStorageContract.Setup(x => x.GetList(It.IsAny<bool>(), It.IsAny<string?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>())).Returns([]);
+        //Act
+        var listOnlyActive = _workerBuisnessLogicContract.GetAllWorkersByPost(Guid.NewGuid().ToString(), true);
+        var list = _workerBuisnessLogicContract.GetAllWorkersByPost(Guid.NewGuid().ToString(), false);
+        //Assert
+        Assert.Multiple(() =>
+        {
+            Assert.That(listOnlyActive, Is.Not.Null);
+            Assert.That(list, Is.Not.Null);
+            Assert.That(listOnlyActive, Has.Count.EqualTo(0));
+            Assert.That(list, Has.Count.EqualTo(0));
+        });
+        _workerStorageContract.Verify(x => x.GetList(It.IsAny<bool>(), It.IsAny<string>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>()), Times.Exactly(2));
+    }
+
+    [Test]
+    public void GetAllWorkersByPost_PostIdIsNullOrEmpty_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _workerBuisnessLogicContract.GetAllWorkersByPost(null, It.IsAny<bool>()), Throws.TypeOf<ArgumentNullException>());
+        Assert.That(() => _workerBuisnessLogicContract.GetAllWorkersByPost(string.Empty, It.IsAny<bool>()), Throws.TypeOf<ArgumentNullException>());
+        _workerStorageContract.Verify(x => x.GetList(It.IsAny<bool>(), It.IsAny<string>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>()), Times.Never);
+    }
+
+    [Test]
+    public void GetAllWorkersByPost_PostIdIsNotGuid_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _workerBuisnessLogicContract.GetAllWorkersByPost("postId", It.IsAny<bool>()), Throws.TypeOf<ValidationException>());
+        _workerStorageContract.Verify(x => x.GetList(It.IsAny<bool>(), It.IsAny<string>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>()), Times.Never);
+    }
+
+    [Test]
+    public void GetAllWorkersByPost_ReturnNull_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _workerBuisnessLogicContract.GetAllWorkersByPost(Guid.NewGuid().ToString(), It.IsAny<bool>()), Throws.TypeOf<NullListException>());
+        _workerStorageContract.Verify(x => x.GetList(It.IsAny<bool>(), It.IsAny<string>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>()), Times.Once);
+    }
+
+    [Test]
+    public void GetAllWorkersByPost_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _workerStorageContract.Setup(x => x.GetList(It.IsAny<bool>(), It.IsAny<string?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _workerBuisnessLogicContract.GetAllWorkersByPost(Guid.NewGuid().ToString(), It.IsAny<bool>()), Throws.TypeOf<StorageException>());
+        _workerStorageContract.Verify(x => x.GetList(It.IsAny<bool>(), It.IsAny<string?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>()), Times.Once);
+    }
+
+    [Test]
+    public void GetAllWorkersByBirthDate_ReturnListOfRecords_Test()
+    {
+        //Arrange
+        var date = DateTime.UtcNow;
+        var listOriginal = new List<WorkerDataModel>()
+        {
+            new(Guid.NewGuid().ToString(), "fio 1", Guid.NewGuid().ToString(), "+7(777)777-77-77", DateTime.Now.AddYears(-16).AddDays(-1), DateTime.Now, false),
+            new(Guid.NewGuid().ToString(), "fio 2", Guid.NewGuid().ToString(), "+7(555)555-55-55", DateTime.Now.AddYears(-16).AddDays(-1), DateTime.Now, true),
+            new(Guid.NewGuid().ToString(), "fio 3", Guid.NewGuid().ToString(), "+7(333)333-33-33", DateTime.Now.AddYears(-16).AddDays(-1), DateTime.Now, false),
+        };
+        _workerStorageContract.Setup(x => x.GetList(It.IsAny<bool>(), It.IsAny<string?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>())).Returns(listOriginal);
+        //Act
+        var listOnlyActive = _workerBuisnessLogicContract.GetAllWorkersByBirthDate(date, date.AddDays(1), true);
+        var list = _workerBuisnessLogicContract.GetAllWorkersByBirthDate(date, date.AddDays(1), false);
+        //Assert
+        Assert.Multiple(() =>
+        {
+            Assert.That(listOnlyActive, Is.Not.Null);
+            Assert.That(list, Is.Not.Null);
+            Assert.That(listOnlyActive, Is.EquivalentTo(listOriginal));
+            Assert.That(list, Is.EquivalentTo(listOriginal));
+        });
+        _workerStorageContract.Verify(x => x.GetList(true, null, date, date.AddDays(1), null, null), Times.Once);
+        _workerStorageContract.Verify(x => x.GetList(false, null, date, date.AddDays(1), null, null), Times.Once);
+    }
+
+    [Test]
+    public void GetAllWorkersByBirthDate_ReturnEmptyList_Test()
+    {
+        //Arrange
+        _workerStorageContract.Setup(x => x.GetList(It.IsAny<bool>(), It.IsAny<string?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>())).Returns([]);
+        //Act
+        var listOnlyActive = _workerBuisnessLogicContract.GetAllWorkersByBirthDate(DateTime.UtcNow, DateTime.UtcNow.AddDays(1), true);
+        var list = _workerBuisnessLogicContract.GetAllWorkers(false);
+        //Assert
+        Assert.Multiple(() =>
+        {
+            Assert.That(listOnlyActive, Is.Not.Null);
+            Assert.That(list, Is.Not.Null);
+            Assert.That(listOnlyActive, Has.Count.EqualTo(0));
+            Assert.That(list, Has.Count.EqualTo(0));
+        });
+        _workerStorageContract.Verify(x => x.GetList(true, null, It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), null, null), Times.Once);
+        _workerStorageContract.Verify(x => x.GetList(false, null, It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), null, null), Times.Once);
+    }
+
+    [Test]
+    public void GetAllWorkersByBirthDate_IncorrectDates_ThrowException_Test()
+    {
+        //Arrange
+        var date = DateTime.UtcNow;
+        //Act&Assert
+        Assert.That(() => _workerBuisnessLogicContract.GetAllWorkersByBirthDate(date, date, It.IsAny<bool>()), Throws.TypeOf<IncorrectDatesException>());
+        Assert.That(() => _workerBuisnessLogicContract.GetAllWorkersByBirthDate(date, date.AddSeconds(-1), It.IsAny<bool>()), Throws.TypeOf<IncorrectDatesException>());
+        _workerStorageContract.Verify(x => x.GetList(It.IsAny<bool>(), It.IsAny<string?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>()), Times.Never);
+    }
+
+    [Test]
+    public void GetAllWorkersByBirthDate_ReturnNull_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _workerBuisnessLogicContract.GetAllWorkersByBirthDate(DateTime.UtcNow, DateTime.UtcNow.AddDays(1), It.IsAny<bool>()), Throws.TypeOf<NullListException>());
+        _workerStorageContract.Verify(x => x.GetList(It.IsAny<bool>(), It.IsAny<string?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>()), Times.Once);
+    }
+
+    [Test]
+    public void GetAllWorkersByBirthDate_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _workerStorageContract.Setup(x => x.GetList(It.IsAny<bool>(), It.IsAny<string?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _workerBuisnessLogicContract.GetAllWorkersByBirthDate(DateTime.UtcNow, DateTime.UtcNow.AddDays(1), It.IsAny<bool>()), Throws.TypeOf<StorageException>());
+        _workerStorageContract.Verify(x => x.GetList(It.IsAny<bool>(), It.IsAny<string?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>()), Times.Once);
+    }
+
+    [Test]
+    public void GetAllWorkersByEmploymentDate_ReturnListOfRecords_Test()
+    {
+        //Arrange
+        var date = DateTime.UtcNow;
+        var listOriginal = new List<WorkerDataModel>()
+        {
+            new(Guid.NewGuid().ToString(), "fio 1", Guid.NewGuid().ToString(), "+7(777)777-77-77", DateTime.Now.AddYears(-16).AddDays(-1), DateTime.Now, false),
+            new(Guid.NewGuid().ToString(), "fio 2", Guid.NewGuid().ToString(), "+7(555)555-55-55", DateTime.Now.AddYears(-16).AddDays(-1), DateTime.Now, true),
+            new(Guid.NewGuid().ToString(), "fio 3", Guid.NewGuid().ToString(), "+7(333)333-33-33", DateTime.Now.AddYears(-16).AddDays(-1), DateTime.Now, false),
+        };
+        _workerStorageContract.Setup(x => x.GetList(It.IsAny<bool>(), It.IsAny<string?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>())).Returns(listOriginal);
+        //Act
+        var listOnlyActive = _workerBuisnessLogicContract.GetAllWorkersByEmploymentDate(date, date.AddDays(1), true);
+        var list = _workerBuisnessLogicContract.GetAllWorkersByEmploymentDate(date, date.AddDays(1), false);
+        //Assert
+        Assert.Multiple(() =>
+        {
+            Assert.That(listOnlyActive, Is.Not.Null);
+            Assert.That(list, Is.Not.Null);
+            Assert.That(listOnlyActive, Is.EquivalentTo(listOriginal));
+            Assert.That(list, Is.EquivalentTo(listOriginal));
+        });
+        _workerStorageContract.Verify(x => x.GetList(true, null, null, null, date, date.AddDays(1)), Times.Once);
+        _workerStorageContract.Verify(x => x.GetList(false, null, null, null, date, date.AddDays(1)), Times.Once);
+    }
+
+    [Test]
+    public void GetAllWorkersByEmploymentDate_ReturnEmptyList_Test()
+    {
+        //Arrange
+        _workerStorageContract.Setup(x => x.GetList(It.IsAny<bool>(), It.IsAny<string?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>())).Returns([]);
+        //Act
+        var listOnlyActive = _workerBuisnessLogicContract.GetAllWorkersByEmploymentDate(DateTime.UtcNow, DateTime.UtcNow.AddDays(1), true);
+        var list = _workerBuisnessLogicContract.GetAllWorkersByEmploymentDate(DateTime.UtcNow, DateTime.UtcNow.AddDays(1), false);
+        //Assert
+        Assert.Multiple(() =>
+        {
+            Assert.That(listOnlyActive, Is.Not.Null);
+            Assert.That(list, Is.Not.Null);
+            Assert.That(listOnlyActive, Has.Count.EqualTo(0));
+            Assert.That(list, Has.Count.EqualTo(0));
+        });
+        _workerStorageContract.Verify(x => x.GetList(true, null, null, null, It.IsAny<DateTime?>(), It.IsAny<DateTime?>()), Times.Once);
+        _workerStorageContract.Verify(x => x.GetList(false, null, null, null, It.IsAny<DateTime?>(), It.IsAny<DateTime?>()), Times.Once);
+    }
+
+    [Test]
+    public void GetAllWorkersByEmploymentDate_IncorrectDates_ThrowException_Test()
+    {
+        //Arrange
+        var date = DateTime.UtcNow;
+        //Act&Assert
+        Assert.That(() => _workerBuisnessLogicContract.GetAllWorkersByEmploymentDate(date, date, It.IsAny<bool>()), Throws.TypeOf<IncorrectDatesException>());
+        Assert.That(() => _workerBuisnessLogicContract.GetAllWorkersByEmploymentDate(date, date.AddSeconds(-1), It.IsAny<bool>()), Throws.TypeOf<IncorrectDatesException>());
+        _workerStorageContract.Verify(x => x.GetList(It.IsAny<bool>(), It.IsAny<string?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>()), Times.Never);
+    }
+
+    [Test]
+    public void GetAllWorkersByEmploymentDate_ReturnNull_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _workerBuisnessLogicContract.GetAllWorkersByEmploymentDate(DateTime.UtcNow, DateTime.UtcNow.AddDays(1), It.IsAny<bool>()), Throws.TypeOf<NullListException>());
+        _workerStorageContract.Verify(x => x.GetList(It.IsAny<bool>(), It.IsAny<string?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>()), Times.Once);
+    }
+
+    [Test]
+    public void GetAllWorkersByEmploymentDate_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _workerStorageContract.Setup(x => x.GetList(It.IsAny<bool>(), It.IsAny<string?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _workerBuisnessLogicContract.GetAllWorkersByEmploymentDate(DateTime.UtcNow, DateTime.UtcNow.AddDays(1), It.IsAny<bool>()), Throws.TypeOf<StorageException>());
+        _workerStorageContract.Verify(x => x.GetList(It.IsAny<bool>(), It.IsAny<string?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>()), Times.Once);
+    }
+
+    [Test]
+    public void GetWorkerByData_GetById_ReturnRecord_Test()
+    {
+        //Arrange
+        var id = Guid.NewGuid().ToString();
+        var record = new WorkerDataModel(id, "fio", Guid.NewGuid().ToString(), "+7(777)777-77-77", DateTime.Now.AddYears(-16).AddDays(-1), DateTime.Now, false);
+        _workerStorageContract.Setup(x => x.GetElementById(id)).Returns(record);
+        //Act
+        var element = _workerBuisnessLogicContract.GetWorkerByData(id);
+        //Assert
+        Assert.That(element, Is.Not.Null);
+        Assert.That(element.Id, Is.EqualTo(id));
+        _workerStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetWorkerByData_GetByFio_ReturnRecord_Test()
+    {
+        //Arrange
+        var fio = "fio";
+        var record = new WorkerDataModel(Guid.NewGuid().ToString(), fio, Guid.NewGuid().ToString(), "+7(777)777-77-77", DateTime.Now.AddYears(-16).AddDays(-1), DateTime.Now, false);
+        _workerStorageContract.Setup(x => x.GetElementByFIO(fio)).Returns(record);
+        //Act
+        var element = _workerBuisnessLogicContract.GetWorkerByData(fio);
+        //Assert
+        Assert.That(element, Is.Not.Null);
+        Assert.That(element.FIO, Is.EqualTo(fio));
+        _workerStorageContract.Verify(x => x.GetElementByFIO(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetWorkerByData_GetByPhoneNumber_ReturnRecord_Test()
+    {
+        //Arrange
+        var phoneNumber = "+7(111)111-11-11";
+        var record = new WorkerDataModel(Guid.NewGuid().ToString(), "fio", Guid.NewGuid().ToString(), phoneNumber, DateTime.Now.AddYears(-16).AddDays(-1), DateTime.Now, false);
+        _workerStorageContract.Setup(x => x.GetElementByPhoneNumber(phoneNumber)).Returns(record);
+        //Act
+        var element = _workerBuisnessLogicContract.GetWorkerByData(phoneNumber);
+        //Assert
+        Assert.That(element, Is.Not.Null);
+        Assert.That(element.PhoneNumber, Is.EqualTo(phoneNumber));
+        _workerStorageContract.Verify(x => x.GetElementByPhoneNumber(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetWorkerByData_EmptyData_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _workerBuisnessLogicContract.GetWorkerByData(null), Throws.TypeOf<ArgumentNullException>());
+        Assert.That(() => _workerBuisnessLogicContract.GetWorkerByData(string.Empty), Throws.TypeOf<ArgumentNullException>());
+        _workerStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Never);
+        _workerStorageContract.Verify(x => x.GetElementByFIO(It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetWorkerByData_GetById_NotFoundRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _workerBuisnessLogicContract.GetWorkerByData(Guid.NewGuid().ToString()), Throws.TypeOf<ElementNotFoundException>());
+        _workerStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Once);
+        _workerStorageContract.Verify(x => x.GetElementByFIO(It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetWorkerByData_GetByFio_NotFoundRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _workerBuisnessLogicContract.GetWorkerByData("fio"), Throws.TypeOf<ElementNotFoundException>());
+        _workerStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Never);
+        _workerStorageContract.Verify(x => x.GetElementByFIO(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetWorkerByData_GetByPhoneNumber_NotFoundRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _workerBuisnessLogicContract.GetWorkerByData("+7-111-111-11-12"), Throws.TypeOf<ElementNotFoundException>());
+        _workerStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Never);
+        _workerStorageContract.Verify(x => x.GetElementByFIO(It.IsAny<string>()), Times.Never);
+        _workerStorageContract.Verify(x => x.GetElementByPhoneNumber(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetWorkerByData_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _workerStorageContract.Setup(x => x.GetElementById(It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+        _workerStorageContract.Setup(x => x.GetElementByFIO(It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+        _workerStorageContract.Setup(x => x.GetElementByPhoneNumber(It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _workerBuisnessLogicContract.GetWorkerByData(Guid.NewGuid().ToString()), Throws.TypeOf<StorageException>());
+        Assert.That(() => _workerBuisnessLogicContract.GetWorkerByData("fio"), Throws.TypeOf<StorageException>());
+        Assert.That(() => _workerBuisnessLogicContract.GetWorkerByData("+7(111)111-11-12"), Throws.TypeOf<StorageException>());
+        _workerStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Once);
+        _workerStorageContract.Verify(x => x.GetElementByFIO(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void InsertWorker_CorrectRecord_Test()
+    {
+        //Arrange
+        var flag = false;
+        var record = new WorkerDataModel(Guid.NewGuid().ToString(), "fio", Guid.NewGuid().ToString(), "+7(777)777-77-77", DateTime.Now.AddYears(-16).AddDays(-1), DateTime.Now, false);
+        _workerStorageContract.Setup(x => x.AddElement(It.IsAny<WorkerDataModel>()))
+            .Callback((WorkerDataModel x) =>
+            {
+                flag = x.Id == record.Id && x.FIO == record.FIO && x.PostId == record.PostId &&
+                x.PhoneNumber == record.PhoneNumber && x.BirthDate == record.BirthDate &&
+                x.EmploymentDate == record.EmploymentDate && x.IsDeleted == record.IsDeleted;
+
+            });
+        //Act
+        _workerBuisnessLogicContract.InsertWorker(record);
+        //Assert
+        _workerStorageContract.Verify(x => x.AddElement(It.IsAny<WorkerDataModel>()), Times.Once);
+        Assert.That(flag);
+    }
+
+    [Test]
+    public void InsertWorker_RecordWithExistsData_ThrowException_Test()
+    {
+        //Arrange
+        _workerStorageContract.Setup(x => x.AddElement(It.IsAny<WorkerDataModel>())).Throws(new ElementExistsException("Data", "Data"));
+        //Act&Assert
+        Assert.That(() => _workerBuisnessLogicContract.InsertWorker(new(Guid.NewGuid().ToString(), "fio", Guid.NewGuid().ToString(), "+7(777)777-77-77", DateTime.Now.AddYears(-16).AddDays(-1), DateTime.Now, false)), Throws.TypeOf<ElementExistsException>());
+        _workerStorageContract.Verify(x => x.AddElement(It.IsAny<WorkerDataModel>()), Times.Once);
+    }
+
+    [Test]
+    public void InsertWorker_NullRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _workerBuisnessLogicContract.InsertWorker(null), Throws.TypeOf<ArgumentNullException>());
+        _workerStorageContract.Verify(x => x.AddElement(It.IsAny<WorkerDataModel>()), Times.Never);
+    }
+
+    [Test]
+    public void InsertWorker_InvalidRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _workerBuisnessLogicContract.InsertWorker(new WorkerDataModel("id", "fio", Guid.NewGuid().ToString(), "+7(777)777-77-77", DateTime.Now.AddYears(-16).AddDays(-1), DateTime.Now, false)), Throws.TypeOf<ValidationException>());
+        _workerStorageContract.Verify(x => x.AddElement(It.IsAny<WorkerDataModel>()), Times.Never);
+    }
+
+    [Test]
+    public void InsertWorker_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _workerStorageContract.Setup(x => x.AddElement(It.IsAny<WorkerDataModel>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _workerBuisnessLogicContract.InsertWorker(new(Guid.NewGuid().ToString(), "fio", Guid.NewGuid().ToString(), "+7(777)777-77-77", DateTime.Now.AddYears(-16).AddDays(-1), DateTime.Now, false)), Throws.TypeOf<StorageException>());
+        _workerStorageContract.Verify(x => x.AddElement(It.IsAny<WorkerDataModel>()), Times.Once);
+    }
+
+    [Test]
+    public void UpdateWorker_CorrectRecord_Test()
+    {
+        //Arrange
+        var flag = false;
+        var record = new WorkerDataModel(Guid.NewGuid().ToString(), "fio", Guid.NewGuid().ToString(), "+7(777)777-77-77", DateTime.Now.AddYears(-16).AddDays(-1), DateTime.Now, false);
+        _workerStorageContract.Setup(x => x.UpdElement(It.IsAny<WorkerDataModel>()))
+            .Callback((WorkerDataModel x) =>
+            {
+                flag = x.Id == record.Id && x.FIO == record.FIO && x.PostId == record.PostId && 
+                x.PhoneNumber == record.PhoneNumber && x.BirthDate == record.BirthDate && 
+                x.EmploymentDate == record.EmploymentDate && x.IsDeleted == record.IsDeleted;
+            });
+        //Act
+        _workerBuisnessLogicContract.UpdateWorker(record);
+        //Assert
+        _workerStorageContract.Verify(x => x.UpdElement(It.IsAny<WorkerDataModel>()), Times.Once);
+        Assert.That(flag);
+    }
+
+    [Test]
+    public void UpdateWorker_RecordWithIncorrectData_ThrowException_Test()
+    {
+        //Arrange
+        _workerStorageContract.Setup(x => x.UpdElement(It.IsAny<WorkerDataModel>())).Throws(new ElementNotFoundException(""));
+        //Act&Assert
+        Assert.That(() => _workerBuisnessLogicContract.UpdateWorker(new(Guid.NewGuid().ToString(), "fio", Guid.NewGuid().ToString(), "+7(777)777-77-77", DateTime.Now.AddYears(-16).AddDays(-1), DateTime.Now, false)), Throws.TypeOf<ElementNotFoundException>());
+        _workerStorageContract.Verify(x => x.UpdElement(It.IsAny<WorkerDataModel>()), Times.Once);
+    }
+
+    [Test]
+    public void UpdateWorker_NullRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _workerBuisnessLogicContract.UpdateWorker(null), Throws.TypeOf<ArgumentNullException>());
+        _workerStorageContract.Verify(x => x.UpdElement(It.IsAny<WorkerDataModel>()), Times.Never);
+    }
+
+    [Test]
+    public void UpdateWorker_InvalidRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _workerBuisnessLogicContract.UpdateWorker(new WorkerDataModel("id", "fio", Guid.NewGuid().ToString(), "+7(777)777-77-77", DateTime.Now.AddYears(-16).AddDays(-1), DateTime.Now, false)), Throws.TypeOf<ValidationException>());
+        _workerStorageContract.Verify(x => x.UpdElement(It.IsAny<WorkerDataModel>()), Times.Never);
+    }
+
+    [Test]
+    public void UpdateWorker_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _workerStorageContract.Setup(x => x.UpdElement(It.IsAny<WorkerDataModel>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _workerBuisnessLogicContract.UpdateWorker(new(Guid.NewGuid().ToString(), "fio", Guid.NewGuid().ToString(), "+7(777)777-77-77", DateTime.Now.AddYears(-16).AddDays(-1), DateTime.Now, false)), Throws.TypeOf<StorageException>());
+        _workerStorageContract.Verify(x => x.UpdElement(It.IsAny<WorkerDataModel>()), Times.Once);
+    }
+
+    [Test]
+    public void DeleteWorker_CorrectRecord_Test()
+    {
+        //Arrange
+        var id = Guid.NewGuid().ToString();
+        var flag = false;
+        _workerStorageContract.Setup(x => x.DelElement(It.Is((string x) => x == id))).Callback(() => { flag = true; });
+        //Act
+        _workerBuisnessLogicContract.DeleteWorker(id);
+        //Assert
+        _workerStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Once);
+        Assert.That(flag);
+    }
+
+    [Test]
+    public void DeleteWorker_RecordWithIncorrectId_ThrowException_Test()
+    {
+        //Arrange
+        var id = Guid.NewGuid().ToString();
+        _workerStorageContract.Setup(x => x.DelElement(It.Is((string x) => x != id))).Throws(new ElementNotFoundException(id));
+        //Act&Assert
+        Assert.That(() => _workerBuisnessLogicContract.DeleteWorker(Guid.NewGuid().ToString()), Throws.TypeOf<ElementNotFoundException>());
+        _workerStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void DeleteWorker_IdIsNullOrEmpty_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _workerBuisnessLogicContract.DeleteWorker(null), Throws.TypeOf<ArgumentNullException>());
+        Assert.That(() => _workerBuisnessLogicContract.DeleteWorker(string.Empty), Throws.TypeOf<ArgumentNullException>());
+        _workerStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void DeleteWorker_IdIsNotGuid_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _workerBuisnessLogicContract.DeleteWorker("id"), Throws.TypeOf<ValidationException>());
+        _workerStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void DeleteWorker_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _workerStorageContract.Setup(x => x.DelElement(It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _workerBuisnessLogicContract.DeleteWorker(Guid.NewGuid().ToString()), Throws.TypeOf<StorageException>());
+        _workerStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Once);
+    }
+}

SPiluSZharuProject/SPiluSZharuTests/DataModelTests/PostDataModelTests.cs

@@ -10,57 +10,41 @@ internal class PostDataModelTests
     [Test]
     public void IdIsNullOrEmptyTest()
     {
-        var post = CreateDataModel(null, Guid.NewGuid().ToString(), "name", PostType.Operator, 10, true, DateTime.UtcNow);
+        var post = CreateDataModel(null, "name", PostType.Operator, 10, true, DateTime.UtcNow);
         Assert.That(() => post.Validate(), Throws.TypeOf<ValidationException>());
-        post = CreateDataModel(string.Empty, Guid.NewGuid().ToString(), "name", PostType.Operator, 10, true, DateTime.UtcNow);
+        post = CreateDataModel(string.Empty, "name", PostType.Operator, 10, true, DateTime.UtcNow);
         Assert.That(() => post.Validate(), Throws.TypeOf<ValidationException>());
     }
 
     [Test]
     public void IdIsNotGuidTest()
     {
-        var post = CreateDataModel("id", Guid.NewGuid().ToString(), "name", PostType.Operator, 10, true, DateTime.UtcNow);
-        Assert.That(() => post.Validate(), Throws.TypeOf<ValidationException>());
-    }
-
-    [Test]
-    public void PostIdIsNullEmptyTest()
-    {
-        var post = CreateDataModel(Guid.NewGuid().ToString(), null, "name", PostType.Operator, 10, true, DateTime.UtcNow);
-        Assert.That(() => post.Validate(), Throws.TypeOf<ValidationException>());
-        post = CreateDataModel(Guid.NewGuid().ToString(), string.Empty, "name", PostType.Operator, 10, true, DateTime.UtcNow);
-        Assert.That(() => post.Validate(), Throws.TypeOf<ValidationException>());
-    }
-
-    [Test]
-    public void PostIdIsNotGuidTest()
-    {
-        var post = CreateDataModel(Guid.NewGuid().ToString(), "postId", "name", PostType.Operator, 10, true, DateTime.UtcNow);
+        var post = CreateDataModel("id", "name", PostType.Operator, 10, true, DateTime.UtcNow);
         Assert.That(() => post.Validate(), Throws.TypeOf<ValidationException>());
     }
 
     [Test]
     public void PostNameIsEmptyTest()
     {
-        var manufacturer = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), null, PostType.Operator, 10, true, DateTime.UtcNow);
-        Assert.That(() => manufacturer.Validate(), Throws.TypeOf<ValidationException>());
-        manufacturer = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), string.Empty, PostType.Operator, 10, true, DateTime.UtcNow);
-        Assert.That(() => manufacturer.Validate(), Throws.TypeOf<ValidationException>());
+        var restaurant = CreateDataModel(Guid.NewGuid().ToString(), null, PostType.Operator, 10, true, DateTime.UtcNow);
+        Assert.That(() => restaurant.Validate(), Throws.TypeOf<ValidationException>());
+        restaurant = CreateDataModel(Guid.NewGuid().ToString(), string.Empty, PostType.Operator, 10, true, DateTime.UtcNow);
+        Assert.That(() => restaurant.Validate(), Throws.TypeOf<ValidationException>());
     }
 
     [Test]
     public void PostTypeIsNoneTest()
     {
-        var post = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), "name", PostType.None, 10, true, DateTime.UtcNow);
+        var post = CreateDataModel(Guid.NewGuid().ToString(), "name", PostType.None, 10, true, DateTime.UtcNow);
         Assert.That(() => post.Validate(), Throws.TypeOf<ValidationException>());
     }
 
     [Test]
     public void SalaryIsLessOrZeroTest()
     {
-        var post = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), "name", PostType.Operator, 0, true, DateTime.UtcNow);
+        var post = CreateDataModel(Guid.NewGuid().ToString(), "name", PostType.Operator, 0, true, DateTime.UtcNow);
         Assert.That(() => post.Validate(), Throws.TypeOf<ValidationException>());
-        post = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), "name", PostType.Operator, -10, true, DateTime.UtcNow);
+        post = CreateDataModel(Guid.NewGuid().ToString(), "name", PostType.Operator, -10, true, DateTime.UtcNow);
         Assert.That(() => post.Validate(), Throws.TypeOf<ValidationException>());
     }
 
@@ -74,12 +58,11 @@ internal class PostDataModelTests
         var salary = 10;
         var isActual = false;
         var changeDate = DateTime.UtcNow.AddDays(-1);
-        var post = CreateDataModel(postId, postPostId, postName, postType, salary, isActual, changeDate);
+        var post = CreateDataModel(postId, postName, postType, salary, isActual, changeDate);
         Assert.That(() => post.Validate(), Throws.Nothing);
         Assert.Multiple(() =>
         {
             Assert.That(post.Id, Is.EqualTo(postId));
-            Assert.That(post.PostId, Is.EqualTo(postPostId));
             Assert.That(post.PostName, Is.EqualTo(postName));
             Assert.That(post.PostType, Is.EqualTo(postType));
             Assert.That(post.Salary, Is.EqualTo(salary));
@@ -88,6 +71,6 @@ internal class PostDataModelTests
         });
     }
 
-    private static PostDataModel CreateDataModel(string? id, string? postId, string? postName, PostType postType, double salary, bool isActual, DateTime changeDate) =>
-       new(id, postId, postName, postType, salary, isActual, changeDate);
+    private static PostDataModel CreateDataModel(string? id, string? postName, PostType postType, double salary, bool isActual, DateTime changeDate) =>
+       new(id, postName, postType, salary, isActual, changeDate);
 }

SPiluSZharuProject/SPiluSZharuTests/Infrastructure/ConfigurationDatabaseTest.cs

@@ -0,0 +1,9 @@
+using SPiluSZharuContratcs.Infrastructure;
+
+namespace SPiluSZharuTests.Infrastructure;
+
+internal class ConfigurationDatabaseTest : IConfigurationDatabase
+{
+    public string ConnectionString =>
+        "Host=127.0.0.1;Port=5432;Database=SPiluSZharuTest;Username=postgres;Password=postgres;";
+}

SPiluSZharuProject/SPiluSZharuTests/SPiluSZharuTests.csproj

@@ -9,15 +9,25 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="coverlet.collector" Version="6.0.2" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
-    <PackageReference Include="NUnit" Version="4.2.2" />
-    <PackageReference Include="NUnit.Analyzers" Version="4.4.0" />
-    <PackageReference Include="NUnit3TestAdapter" Version="4.6.0" />
+    <PackageReference Include="coverlet.collector" Version="6.0.4">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="Microsoft.Extensions.Logging" Version="9.0.3" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.13.0" />
+    <PackageReference Include="Moq" Version="4.20.72" />
+    <PackageReference Include="NUnit" Version="4.3.2" />
+    <PackageReference Include="NUnit.Analyzers" Version="4.6.0">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="NUnit3TestAdapter" Version="5.0.0" />
   </ItemGroup>
 
   <ItemGroup>
+    <ProjectReference Include="..\SPiluSZharuBuisnessLogic\SPiluSZharuBuisnessLogic.csproj" />
     <ProjectReference Include="..\SPiluSZharuContracts\SPiluSZharuContracts.csproj" />
+    <ProjectReference Include="..\SPiluSZharuDatabase\SPiluSZharuDatabase.csproj" />
   </ItemGroup>
 
   <ItemGroup>

SPiluSZharuProject/SPiluSZharuTests/StoragesContracts/BaseStorageContractTest.cs

@@ -0,0 +1,25 @@
+using SPiluSZharuDatabase;
+using SPiluSZharuTests.Infrastructure;
+
+namespace SPiluSZharuTests.StoragesContracts;
+
+internal abstract class BaseStorageContractTest
+{
+    protected SPiluSZharuDbContext SPiluSZharuDbContext { get; private set; }
+
+    [OneTimeSetUp]
+    public void OneTimeSetUp()
+    {
+        SPiluSZharuDbContext = new SPiluSZharuDbContext(new ConfigurationDatabaseTest());
+
+        SPiluSZharuDbContext.Database.EnsureDeleted();
+        SPiluSZharuDbContext.Database.EnsureCreated();
+    }
+
+    [OneTimeTearDown]
+    public void OneTimeTearDown()
+    {
+        SPiluSZharuDbContext.Database.EnsureDeleted();
+        SPiluSZharuDbContext.Dispose();
+    }
+}

SPiluSZharuProject/SPiluSZharuTests/StoragesContracts/PostStorageContractTests.cs

@@ -0,0 +1,317 @@
+using Microsoft.EntityFrameworkCore;
+using SPiluSZharuContracts.DataModels;
+using SPiluSZharuContracts.Enums;
+using SPiluSZharuContracts.Exceptions;
+using SPiluSZharuDatabase.Implementations;
+using SPiluSZharuDatabase.Models;
+
+namespace SPiluSZharuTests.StoragesContracts;
+
+[TestFixture]
+internal class PostStorageContractTests : BaseStorageContractTest
+{
+    private PostStorageContract _postStorageContract;
+
+    [SetUp]
+    public void SetUp()
+    {
+        _postStorageContract = new PostStorageContract(SPiluSZharuDbContext);
+    }
+
+    [TearDown]
+    public void TearDown()
+    {
+        SPiluSZharuDbContext.Database.ExecuteSqlRaw("TRUNCATE \"Posts\" CASCADE;");
+    }
+
+    [Test]
+    public void Try_GetList_WhenHaveRecords_Test()
+    {
+        var post = InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString(), "name 1");
+        InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString(), "name 2");
+        InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString(), "name 3");
+        var list = _postStorageContract.GetList();
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(3));
+        AssertElement(list.First(x => x.Id == post.PostId), post);
+    }
+
+    [Test]
+    public void Try_GetList_WhenNoRecords_Test()
+    {
+        var list = _postStorageContract.GetList();
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Is.Empty);
+    }
+
+    [Test]
+    public void Try_GetList_OnlyActual_Test()
+    {
+        InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString(), "name 1", isActual: true);
+        InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString(), "name 2", isActual: true);
+        InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString(), "name 3", isActual: false);
+        var list = _postStorageContract.GetList(onlyActual: true);
+        Assert.That(list, Is.Not.Null);
+        Assert.Multiple(() =>
+        {
+            Assert.That(list, Has.Count.EqualTo(2));
+            Assert.That(!list.Any(x => !x.IsActual));
+        });
+    }
+
+    [Test]
+    public void Try_GetList_IncludeNoActual_Test()
+    {
+        InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString(), "name 1", isActual: true);
+        InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString(), "name 2", isActual: true);
+        InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString(), "name 3", isActual: false);
+        var list = _postStorageContract.GetList(onlyActual: false);
+        Assert.That(list, Is.Not.Null);
+        Assert.Multiple(() =>
+        {
+            Assert.That(list, Has.Count.EqualTo(3));
+            Assert.That(list.Count(x => x.IsActual), Is.EqualTo(2));
+            Assert.That(list.Count(x => !x.IsActual), Is.EqualTo(1));
+        });
+    }
+
+    [Test]
+    public void Try_GetPostWithHistory_WhenHaveRecords_Test()
+    {
+        var postId = Guid.NewGuid().ToString();
+        InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString(), "name 1", isActual: true);
+        InsertPostToDatabaseAndReturn(postId, "name 2", isActual: true);
+        InsertPostToDatabaseAndReturn(postId, "name 2", isActual: false);
+        var list = _postStorageContract.GetPostWithHistory(postId);
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(2));
+    }
+
+    [Test]
+    public void Try_GetPostWithHistory_WhenNoRecords_Test()
+    {
+        var postId = Guid.NewGuid().ToString();
+        InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString(), "name 1", isActual: true);
+        InsertPostToDatabaseAndReturn(postId, "name 2", isActual: true);
+        InsertPostToDatabaseAndReturn(postId, "name 2", isActual: false);
+        var list = _postStorageContract.GetPostWithHistory(Guid.NewGuid().ToString());
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(0));
+    }
+
+    [Test]
+    public void Try_GetElementById_WhenHaveRecord_Test()
+    {
+        var post = InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString());
+        AssertElement(_postStorageContract.GetElementById(post.PostId), post);
+    }
+
+    [Test]
+    public void Try_GetElementById_WhenNoRecord_Test()
+    {
+        InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString());
+        Assert.That(() => _postStorageContract.GetElementById(Guid.NewGuid().ToString()), Is.Null);
+    }
+
+    [Test]
+    public void Try_GetElementById_WhenRecordHasDeleted_Test()
+    {
+        var post = InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString(), isActual: false);
+        Assert.That(() => _postStorageContract.GetElementById(post.PostId), Is.Null);
+    }
+
+    [Test]
+    public void Try_GetElementById_WhenTrySearchById_Test()
+    {
+        var post = InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString());
+        Assert.That(() => _postStorageContract.GetElementById(post.Id), Is.Null);
+    }
+
+    [Test]
+    public void Try_GetElementByName_WhenHaveRecord_Test()
+    {
+        var post = InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString());
+        AssertElement(_postStorageContract.GetElementByName(post.PostName), post);
+    }
+
+    [Test]
+    public void Try_GetElementByName_WhenNoRecord_Test()
+    {
+        InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString());
+        Assert.That(() => _postStorageContract.GetElementByName("name"), Is.Null);
+    }
+
+    [Test]
+    public void Try_GetElementByName_WhenRecordHasDeleted_Test()
+    {
+        var post = InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString(), isActual: false);
+        Assert.That(() => _postStorageContract.GetElementById(post.PostName), Is.Null);
+    }
+
+    [Test]
+    public void Try_AddElement_Test()
+    {
+        var post = CreateModel(Guid.NewGuid().ToString(), isActual: true);
+        _postStorageContract.AddElement(post);
+        AssertElement(GetPostFromDatabaseByPostId(post.Id), post);
+    }
+
+    [Test]
+    public void Try_AddElement_WhenActualIsFalse_Test()
+    {
+        var post = CreateModel(Guid.NewGuid().ToString(), isActual: false);
+        Assert.That(() => _postStorageContract.AddElement(post), Throws.Nothing);
+        AssertElement(GetPostFromDatabaseByPostId(post.Id), CreateModel(post.Id, isActual: true));
+    }
+
+    [Test]
+    public void Try_AddElement_WhenHaveRecordWithSameName_Test()
+    {
+        var post = CreateModel(Guid.NewGuid().ToString(), "name unique", isActual: true);
+        InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString(), postName: post.PostName, isActual: true);
+        Assert.That(() => _postStorageContract.AddElement(post), Throws.TypeOf<ElementExistsException>());
+    }
+
+    [Test]
+    public void Try_AddElement_WhenHaveRecordWithSamePostIdAndActualIsTrue_Test()
+    {
+        var post = CreateModel(Guid.NewGuid().ToString(), isActual: true);
+        InsertPostToDatabaseAndReturn(post.Id, isActual: true);
+        Assert.That(() => _postStorageContract.AddElement(post), Throws.TypeOf<ElementExistsException>());
+    }
+
+    [Test]
+    public void Try_UpdElement_Test()
+    {
+        var post = CreateModel(Guid.NewGuid().ToString());
+        InsertPostToDatabaseAndReturn(post.Id, isActual: true);
+        _postStorageContract.UpdElement(post);
+        var posts = SPiluSZharuDbContext.Posts.Where(x => x.PostId == post.Id).OrderByDescending(x => x.ChangeDate);
+        Assert.That(posts.Count(), Is.EqualTo(2));
+        AssertElement(posts.First(), CreateModel(post.Id, isActual: true));
+        AssertElement(posts.Last(), CreateModel(post.Id, isActual: false));
+    }
+
+    [Test]
+    public void Try_UpdElement_WhenActualIsFalse_Test()
+    {
+        var post = CreateModel(Guid.NewGuid().ToString(), isActual: false);
+        InsertPostToDatabaseAndReturn(post.Id, isActual: true);
+        _postStorageContract.UpdElement(post);
+        AssertElement(GetPostFromDatabaseByPostId(post.Id), CreateModel(post.Id, isActual: true));
+    }
+
+    [Test]
+    public void Try_UpdElement_WhenNoRecordWithThisId_Test()
+    {
+        Assert.That(() => _postStorageContract.UpdElement(CreateModel(Guid.NewGuid().ToString())), Throws.TypeOf<ElementNotFoundException>());
+    }
+
+    [Test]
+    public void Try_UpdElement_WhenHaveRecordWithSameName_Test()
+    {
+        var post = CreateModel(Guid.NewGuid().ToString(), "New Name");
+        InsertPostToDatabaseAndReturn(post.Id, postName: "name");
+        InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString(), postName: post.PostName);
+        Assert.That(() => _postStorageContract.UpdElement(post), Throws.TypeOf<ElementExistsException>());
+    }
+
+    [Test]
+    public void Try_UpdElement_WhenRecordWasDeleted_Test()
+    {
+        var post = CreateModel(Guid.NewGuid().ToString());
+        InsertPostToDatabaseAndReturn(post.Id, isActual: false);
+        Assert.That(() => _postStorageContract.UpdElement(post), Throws.TypeOf<ElementDeletedException>());
+    }
+
+    [Test]
+    public void Try_DelElement_Test()
+    {
+        var post = InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString(), isActual: true);
+        _postStorageContract.DelElement(post.PostId);
+        var element = GetPostFromDatabaseByPostId(post.PostId);
+        Assert.Multiple(() =>
+        {
+            Assert.That(element, Is.Not.Null);
+            Assert.That(!element!.IsActual);
+        });
+    }
+
+    [Test]
+    public void Try_DelElement_WhenNoRecordWithThisId_Test()
+    {
+        Assert.That(() => _postStorageContract.DelElement(Guid.NewGuid().ToString()), Throws.TypeOf<ElementNotFoundException>());
+    }
+
+    [Test]
+    public void Try_DelElement_WhenRecordWasDeleted_Test()
+    {
+        var post = InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString(), isActual: false);
+        Assert.That(() => _postStorageContract.DelElement(post.PostId), Throws.TypeOf<ElementDeletedException>());
+    }
+
+    [Test]
+    public void Try_ResElement_Test()
+    {
+        var post = InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString(), isActual: false);
+        _postStorageContract.ResElement(post.PostId);
+        var element = GetPostFromDatabaseByPostId(post.PostId);
+        Assert.Multiple(() =>
+        {
+            Assert.That(element, Is.Not.Null);
+            Assert.That(element!.IsActual);
+        });
+    }
+
+    [Test]
+    public void Try_ResElement_WhenNoRecordWithThisId_Test()
+    {
+        Assert.That(() => _postStorageContract.ResElement(Guid.NewGuid().ToString()), Throws.TypeOf<ElementNotFoundException>());
+    }
+
+    [Test]
+    public void Try_ResElement_WhenRecordNotWasDeleted_Test()
+    {
+        var post = InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString(), isActual: true);
+        Assert.That(() => _postStorageContract.ResElement(post.PostId), Throws.Nothing);
+    }
+
+    private Post InsertPostToDatabaseAndReturn(string id, string postName = "test", PostType postType = PostType.Operator, double salary = 10, bool isActual = true, DateTime? changeDate = null)
+    {
+        var post = new Post() { Id = Guid.NewGuid().ToString(), PostId = id, PostName = postName, PostType = postType, Salary = salary, IsActual = isActual, ChangeDate = changeDate ?? DateTime.UtcNow };
+        SPiluSZharuDbContext.Posts.Add(post);
+        SPiluSZharuDbContext.SaveChanges();
+        return post;
+    }
+
+    private static void AssertElement(PostDataModel? actual, Post expected)
+    {
+        Assert.That(actual, Is.Not.Null);
+        Assert.Multiple(() =>
+        {
+            Assert.That(actual.Id, Is.EqualTo(expected.PostId));
+            Assert.That(actual.PostName, Is.EqualTo(expected.PostName));
+            Assert.That(actual.PostType, Is.EqualTo(expected.PostType));
+            Assert.That(actual.Salary, Is.EqualTo(expected.Salary));
+            Assert.That(actual.IsActual, Is.EqualTo(expected.IsActual));
+        });
+    }
+
+    private static PostDataModel CreateModel(string postId, string postName = "test", PostType postType = PostType.Operator, double salary = 10, bool isActual = false, DateTime? changeDate = null)
+        => new(postId, postName, postType, salary, isActual, changeDate ?? DateTime.UtcNow);
+
+    private Post? GetPostFromDatabaseByPostId(string id) => SPiluSZharuDbContext.Posts.Where(x => x.PostId == id).OrderByDescending(x => x.ChangeDate).FirstOrDefault();
+
+    private static void AssertElement(Post? actual, PostDataModel expected)
+    {
+        Assert.That(actual, Is.Not.Null);
+        Assert.Multiple(() =>
+        {
+            Assert.That(actual.PostId, Is.EqualTo(expected.Id));
+            Assert.That(actual.PostName, Is.EqualTo(expected.PostName));
+            Assert.That(actual.PostType, Is.EqualTo(expected.PostType));
+            Assert.That(actual.Salary, Is.EqualTo(expected.Salary));
+            Assert.That(actual.IsActual, Is.EqualTo(expected.IsActual));
+        });
+    }
+}

SPiluSZharuProject/SPiluSZharuTests/StoragesContracts/ProductStorageContractTests.cs

@@ -0,0 +1,306 @@
+using Microsoft.EntityFrameworkCore;
+using SPiluSZharuContracts.DataModels;
+using SPiluSZharuContracts.Enums;
+using SPiluSZharuContracts.Exceptions;
+using SPiluSZharuDatabase.Implementations;
+using SPiluSZharuDatabase.Models;
+
+namespace SPiluSZharuTests.StoragesContracts;
+
+[TestFixture]
+internal class ProductStorageContractTests : BaseStorageContractTest
+{
+    private ProductStorageContract _productStorageContract;
+
+    [SetUp]
+    public void SetUp()
+    {
+        _productStorageContract = new ProductStorageContract(SPiluSZharuDbContext);
+    }
+
+    [TearDown]
+    public void TearDown()
+    {
+        SPiluSZharuDbContext.Database.ExecuteSqlRaw("TRUNCATE \"Products\" CASCADE;");
+    }
+
+    [Test]
+    public void Try_GetList_WhenHaveRecords_Test()
+    {
+        var product = InsertProductToDatabaseAndReturn(Guid.NewGuid().ToString(), "name 1");
+        InsertProductToDatabaseAndReturn(Guid.NewGuid().ToString(), "name 2");
+        InsertProductToDatabaseAndReturn(Guid.NewGuid().ToString(), "name 3");
+        var list = _productStorageContract.GetList();
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(3));
+        AssertElement(list.First(x => x.Id == product.Id), product);
+    }
+
+    [Test]
+    public void Try_GetList_WhenNoRecords_Test()
+    {
+        var list = _productStorageContract.GetList();
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Is.Empty);
+    }
+
+    [Test]
+    public void Try_GetList_OnlyActual_Test()
+    {
+        InsertProductToDatabaseAndReturn(Guid.NewGuid().ToString(), "name 1", isDeleted: true);
+        InsertProductToDatabaseAndReturn(Guid.NewGuid().ToString(), "name 2", isDeleted: false);
+        InsertProductToDatabaseAndReturn(Guid.NewGuid().ToString(), "name 3", isDeleted: false);
+        var list = _productStorageContract.GetList(onlyActive: true);
+        Assert.That(list, Is.Not.Null);
+        Assert.Multiple(() =>
+        {
+            Assert.That(list, Has.Count.EqualTo(2));
+            Assert.That(!list.Any(x => x.IsDeleted));
+        });
+    }
+
+    [Test]
+    public void Try_GetList_IncludeNoActual_Test()
+    {
+        InsertProductToDatabaseAndReturn(Guid.NewGuid().ToString(), "name 1", isDeleted: true);
+        InsertProductToDatabaseAndReturn(Guid.NewGuid().ToString(), "name 2", isDeleted: true);
+        InsertProductToDatabaseAndReturn(Guid.NewGuid().ToString(), "name 3", isDeleted: false);
+        var list = _productStorageContract.GetList(onlyActive: false);
+        Assert.That(list, Is.Not.Null);
+        Assert.Multiple(() =>
+        {
+            Assert.That(list, Has.Count.EqualTo(3));
+            Assert.That(list.Count(x => x.IsDeleted), Is.EqualTo(2));
+            Assert.That(list.Count(x => !x.IsDeleted), Is.EqualTo(1));
+        });
+    }
+
+    [Test]
+    public void Try_GetHistoryByProductId_WhenHaveRecords_Test()
+    {
+        var product = InsertProductToDatabaseAndReturn(Guid.NewGuid().ToString(), "name 1");
+        InsertProductHistoryToDatabaseAndReturn(product.Id, 20, DateTime.UtcNow.AddDays(-1));
+        InsertProductHistoryToDatabaseAndReturn(product.Id, 30, DateTime.UtcNow.AddMinutes(-10));
+        InsertProductHistoryToDatabaseAndReturn(product.Id, 40, DateTime.UtcNow.AddDays(1));
+        var list = _productStorageContract.GetHistoryByProductId(product.Id);
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(3));
+    }
+
+    [Test]
+    public void Try_GetHistoryByProductId_WhenNoRecords_Test()
+    {
+        var product = InsertProductToDatabaseAndReturn(Guid.NewGuid().ToString(), "name 1");
+        InsertProductHistoryToDatabaseAndReturn(product.Id, 20, DateTime.UtcNow.AddDays(-1));
+        InsertProductHistoryToDatabaseAndReturn(product.Id, 30, DateTime.UtcNow.AddMinutes(-10));
+        InsertProductHistoryToDatabaseAndReturn(product.Id, 40, DateTime.UtcNow.AddDays(1));
+        var list = _productStorageContract.GetHistoryByProductId(Guid.NewGuid().ToString());
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(0));
+    }
+
+    [Test]
+    public void Try_GetElementById_WhenHaveRecord_Test()
+    {
+        var product = InsertProductToDatabaseAndReturn(Guid.NewGuid().ToString());
+        AssertElement(_productStorageContract.GetElementById(product.Id), product);
+    }
+
+    [Test]
+    public void Try_GetElementById_WhenNoRecord_Test()
+    {
+        InsertProductToDatabaseAndReturn(Guid.NewGuid().ToString());
+        Assert.That(() => _productStorageContract.GetElementById(Guid.NewGuid().ToString()), Is.Null);
+    }
+
+    [Test]
+    public void Try_GetElementById_WhenRecordHasDeleted_Test()
+    {
+        var product = InsertProductToDatabaseAndReturn(Guid.NewGuid().ToString(), isDeleted: true);
+        Assert.That(() => _productStorageContract.GetElementById(product.Id), Is.Null);
+    }
+
+    [Test]
+    public void Try_GetElementByName_WhenHaveRecord_Test()
+    {
+        var product = InsertProductToDatabaseAndReturn(Guid.NewGuid().ToString());
+        AssertElement(_productStorageContract.GetElementByName(product.ProductName), product);
+    }
+
+    [Test]
+    public void Try_GetElementByName_WhenNoRecord_Test()
+    {
+        InsertProductToDatabaseAndReturn(Guid.NewGuid().ToString());
+        Assert.That(() => _productStorageContract.GetElementByName("name"), Is.Null);
+    }
+
+    [Test]
+    public void Try_GetElementByName_WhenRecordHasDeleted_Test()
+    {
+        var product = InsertProductToDatabaseAndReturn(Guid.NewGuid().ToString(), isDeleted: true);
+        Assert.That(() => _productStorageContract.GetElementById(product.ProductName), Is.Null);
+    }
+
+    [Test]
+    public void Try_AddElement_Test()
+    {
+        var product = CreateModel(Guid.NewGuid().ToString(), isDeleted: false);
+        _productStorageContract.AddElement(product);
+        AssertElement(GetProductFromDatabaseById(product.Id), product);
+    }
+
+    [Test]
+    public void Try_AddElement_WhenIsDeletedIsTrue_Test()
+    {
+        var product = CreateModel(Guid.NewGuid().ToString(), isDeleted: true);
+        Assert.That(() => _productStorageContract.AddElement(product), Throws.Nothing);
+        AssertElement(GetProductFromDatabaseById(product.Id), CreateModel(product.Id, isDeleted: false));
+    }
+
+    [Test]
+    public void Try_AddElement_WhenHaveRecordWithSameId_Test()
+    {
+        var product = CreateModel(Guid.NewGuid().ToString());
+        InsertProductToDatabaseAndReturn(product.Id, productName: "name unique");
+        Assert.That(() => _productStorageContract.AddElement(product), Throws.TypeOf<ElementExistsException>());
+    }
+
+    [Test]
+    public void Try_AddElement_WhenHaveRecordWithSameName_Test()
+    {
+        var product = CreateModel(Guid.NewGuid().ToString(), "name unique", isDeleted: false);
+        InsertProductToDatabaseAndReturn(Guid.NewGuid().ToString(), productName: product.ProductName, isDeleted: false);
+        Assert.That(() => _productStorageContract.AddElement(product), Throws.TypeOf<ElementExistsException>());
+    }
+
+    [Test]
+    public void Try_AddElement_WhenHaveRecordWithSameNameButOneWasDeleted_Test()
+    {
+        var product = CreateModel(Guid.NewGuid().ToString(), "name unique", isDeleted: false);
+        InsertProductToDatabaseAndReturn(Guid.NewGuid().ToString(), productName: product.ProductName, isDeleted: true);
+        Assert.That(() => _productStorageContract.AddElement(product), Throws.Nothing);
+    }
+
+    [Test]
+    public void Try_UpdElement_Test()
+    {
+        var product = CreateModel(Guid.NewGuid().ToString(), isDeleted: false);
+        InsertProductToDatabaseAndReturn(product.Id, isDeleted: false);
+        _productStorageContract.UpdElement(product);
+        AssertElement(GetProductFromDatabaseById(product.Id), product);
+    }
+
+    [Test]
+    public void Try_UpdElement_WhenIsDeletedIsTrue_Test()
+    {
+        var product = CreateModel(Guid.NewGuid().ToString(), isDeleted: true);
+        InsertProductToDatabaseAndReturn(product.Id, isDeleted: false);
+        _productStorageContract.UpdElement(product);
+        AssertElement(GetProductFromDatabaseById(product.Id), CreateModel(product.Id, isDeleted: false));
+    }
+
+    [Test]
+    public void Try_UpdElement_WhenNoRecordWithThisId_Test()
+    {
+        Assert.That(() => _productStorageContract.UpdElement(CreateModel(Guid.NewGuid().ToString())), Throws.TypeOf<ElementNotFoundException>());
+    }
+
+    [Test]
+    public void Try_UpdElement_WhenHaveRecordWithSameName_Test()
+    {
+        var product = CreateModel(Guid.NewGuid().ToString(), "name unique", isDeleted: false);
+        InsertProductToDatabaseAndReturn(product.Id, productName: "name");
+        InsertProductToDatabaseAndReturn(Guid.NewGuid().ToString(), productName: product.ProductName);
+        Assert.That(() => _productStorageContract.UpdElement(product), Throws.TypeOf<ElementExistsException>());
+    }
+
+    [Test]
+    public void Try_UpdElement_WhenHaveRecordWithSameNameButOneWasDeleted_Test()
+    {
+        var product = CreateModel(Guid.NewGuid().ToString(), "name unique", isDeleted: false);
+        InsertProductToDatabaseAndReturn(product.Id, productName: "name");
+        InsertProductToDatabaseAndReturn(Guid.NewGuid().ToString(), productName: product.ProductName, isDeleted: true);
+        Assert.That(() => _productStorageContract.UpdElement(product), Throws.Nothing);
+    }
+
+    [Test]
+    public void Try_UpdElement_WhenRecordWasDeleted_Test()
+    {
+        var product = CreateModel(Guid.NewGuid().ToString());
+        InsertProductToDatabaseAndReturn(product.Id, isDeleted: true);
+        Assert.That(() => _productStorageContract.UpdElement(product), Throws.TypeOf<ElementNotFoundException>());
+    }
+
+    [Test]
+    public void Try_DelElement_Test()
+    {
+        var product = InsertProductToDatabaseAndReturn(Guid.NewGuid().ToString(), isDeleted: false);
+        _productStorageContract.DelElement(product.Id);
+        var element = GetProductFromDatabaseById(product.Id);
+        Assert.Multiple(() =>
+        {
+            Assert.That(element, Is.Not.Null);
+            Assert.That(element!.IsDeleted);
+        });
+    }
+
+    [Test]
+    public void Try_DelElement_WhenNoRecordWithThisId_Test()
+    {
+        Assert.That(() => _productStorageContract.DelElement(Guid.NewGuid().ToString()), Throws.TypeOf<ElementNotFoundException>());
+    }
+
+    [Test]
+    public void Try_DelElement_WhenRecordWasDeleted_Test()
+    {
+        var product = InsertProductToDatabaseAndReturn(Guid.NewGuid().ToString(), isDeleted: true);
+        Assert.That(() => _productStorageContract.DelElement(product.Id), Throws.TypeOf<ElementNotFoundException>());
+    }
+
+    private Product InsertProductToDatabaseAndReturn(string id, string productName = "test", ProductType productType = ProductType.Burgers, double price = 1, bool isDeleted = false)
+    {
+        var product = new Product() { Id = id, ProductName = productName, ProductType = productType, Price = price, IsDeleted = isDeleted };
+        SPiluSZharuDbContext.Products.Add(product);
+        SPiluSZharuDbContext.SaveChanges();
+        return product;
+    }
+
+    private ProductHistory InsertProductHistoryToDatabaseAndReturn(string productId, double price, DateTime changeDate)
+    {
+        var productHistory = new ProductHistory() { Id = Guid.NewGuid().ToString(), ProductId = productId, OldPrice = price, ChangeDate = changeDate };
+        SPiluSZharuDbContext.ProductHistories.Add(productHistory);
+        SPiluSZharuDbContext.SaveChanges();
+        return productHistory;
+    }
+
+    private static void AssertElement(ProductDataModel? actual, Product expected)
+    {
+        Assert.That(actual, Is.Not.Null);
+        Assert.Multiple(() =>
+        {
+            Assert.That(actual.Id, Is.EqualTo(expected.Id));
+            Assert.That(actual.ProductName, Is.EqualTo(expected.ProductName));
+            Assert.That(actual.ProductType, Is.EqualTo(expected.ProductType));
+            Assert.That(actual.Price, Is.EqualTo(expected.Price));
+            Assert.That(actual.IsDeleted, Is.EqualTo(expected.IsDeleted));
+        });
+    }
+
+    private static ProductDataModel CreateModel(string id, string productName = "test", ProductType productType = ProductType.Burgers, double price = 1, bool isDeleted = false)
+        => new(id, productName, productType, price, isDeleted);
+
+    private Product? GetProductFromDatabaseById(string id) => SPiluSZharuDbContext.Products.FirstOrDefault(x => x.Id == id);
+
+    private static void AssertElement(Product? actual, ProductDataModel expected)
+    {
+        Assert.That(actual, Is.Not.Null);
+        Assert.Multiple(() =>
+        {
+            Assert.That(actual.Id, Is.EqualTo(expected.Id));
+            Assert.That(actual.ProductName, Is.EqualTo(expected.ProductName));
+            Assert.That(actual.ProductType, Is.EqualTo(expected.ProductType));
+            Assert.That(actual.Price, Is.EqualTo(expected.Price));
+            Assert.That(actual.IsDeleted, Is.EqualTo(expected.IsDeleted));
+        });
+    }
+}

SPiluSZharuProject/SPiluSZharuTests/StoragesContracts/RestaurantStorageContractTest.cs

@@ -0,0 +1,188 @@
+using Microsoft.EntityFrameworkCore;
+using SPiluSZharuContracts.DataModels;
+using SPiluSZharuContracts.Exceptions;
+using SPiluSZharuDatabase.Implementations;
+using SPiluSZharuDatabase.Models;
+
+namespace SPiluSZharuTests.StoragesContracts;
+
+[TestFixture]
+internal class RestaurantStorageContractTest : BaseStorageContractTest
+{
+	private RestaurantStorageContract _restaurantStorageContract;
+
+	[SetUp]
+	public void SetUp()
+	{
+		_restaurantStorageContract = new RestaurantStorageContract(SPiluSZharuDbContext);
+	}
+
+	[TearDown]
+	public void TearDown()
+	{
+		SPiluSZharuDbContext.Database.ExecuteSqlRaw("TRUNCATE \"Restaurants\" CASCADE;");
+	}
+
+	[Test]
+	public void Try_GetList_WhenHaveRecords_Test()
+	{
+		var restaurant = InsertRestaurantToDatabaseAndReturn(Guid.NewGuid().ToString(), "name 1");
+		InsertRestaurantToDatabaseAndReturn(Guid.NewGuid().ToString(), "name 2");
+		InsertRestaurantToDatabaseAndReturn(Guid.NewGuid().ToString(), "name 3");
+		var list = _restaurantStorageContract.GetList();
+		Assert.That(list, Is.Not.Null);
+		Assert.That(list, Has.Count.EqualTo(3));
+		AssertElement(list.First(x => x.Id == restaurant.Id), restaurant);
+	}
+
+	[Test]
+	public void Try_GetList_WhenNoRecords_Test()
+	{
+		var list = _restaurantStorageContract.GetList();
+		Assert.That(list, Is.Not.Null);
+		Assert.That(list, Is.Empty);
+	}
+
+	[Test]
+	public void Try_GetElementById_WhenHaveRecord_Test()
+	{
+		var restaurant = InsertRestaurantToDatabaseAndReturn(Guid.NewGuid().ToString());
+		AssertElement(_restaurantStorageContract.GetElementById(restaurant.Id), restaurant);
+	}
+
+	[Test]
+	public void Try_GetElementById_WhenNoRecord_Test()
+	{
+		InsertRestaurantToDatabaseAndReturn(Guid.NewGuid().ToString());
+		Assert.That(() => _restaurantStorageContract.GetElementById(Guid.NewGuid().ToString()), Is.Null);
+	}
+
+	[Test]
+	public void Try_GetElementByName_WhenHaveRecord_Test()
+	{
+		var restaurant = InsertRestaurantToDatabaseAndReturn(Guid.NewGuid().ToString());
+		AssertElement(_restaurantStorageContract.GetElementByName(restaurant.RestaurantName), restaurant);
+	}
+
+	[Test]
+	public void Try_GetElementByName_WhenNoRecord_Test()
+	{
+		InsertRestaurantToDatabaseAndReturn(Guid.NewGuid().ToString());
+		Assert.That(() => _restaurantStorageContract.GetElementByName("name"), Is.Null);
+	}
+
+	[Test]
+	public void Try_GetElementByOldName_WhenHaveRecord_Test()
+	{
+		var restaurant = InsertRestaurantToDatabaseAndReturn(Guid.NewGuid().ToString());
+		AssertElement(_restaurantStorageContract.GetElementByOldName(restaurant.PrevRestaurantName!), restaurant);
+		AssertElement(_restaurantStorageContract.GetElementByOldName(restaurant.PrevPrevRestaurantName!), restaurant);
+	}
+
+	[Test]
+	public void Try_GetElementByOldName_WhenNoRecord_Test()
+	{
+		InsertRestaurantToDatabaseAndReturn(Guid.NewGuid().ToString());
+		Assert.That(() => _restaurantStorageContract.GetElementByOldName("name"), Is.Null);
+	}
+
+	[Test]
+	public void Try_AddElement_Test()
+	{
+		var restaurant = CreateModel(Guid.NewGuid().ToString());
+		_restaurantStorageContract.AddElement(restaurant);
+		AssertElement(GetRestaurantFromDatabase(restaurant.Id), restaurant);
+	}
+
+	[Test]
+	public void Try_AddElement_WhenHaveRecordWithSameId_Test()
+	{
+		var restaurant = CreateModel(Guid.NewGuid().ToString(), "name unique");
+		InsertRestaurantToDatabaseAndReturn(restaurant.Id);
+		Assert.That(() => _restaurantStorageContract.AddElement(restaurant), Throws.TypeOf<ElementExistsException>());
+	}
+
+	[Test]
+	public void Try_AddElement_WhenHaveRecordWithSameRestaurantName_Test()
+	{
+		var restaurant = CreateModel(Guid.NewGuid().ToString(), "name unique");
+		InsertRestaurantToDatabaseAndReturn(Guid.NewGuid().ToString(), restaurantName: restaurant.RestaurantName);
+		Assert.That(() => _restaurantStorageContract.AddElement(restaurant), Throws.TypeOf<ElementExistsException>());
+	}
+
+	[Test]
+	public void Try_UpdElement_Test()
+	{
+		var restaurant = CreateModel(Guid.NewGuid().ToString(), "name new", "test", "prev");
+		InsertRestaurantToDatabaseAndReturn(restaurant.Id, restaurantName: restaurant.PrevRestaurantName!, prevRestaurantName: restaurant.PrevPrevRestaurantName!);
+		_restaurantStorageContract.UpdElement(CreateModel(restaurant.Id, "name new", "some name", "some name"));
+		AssertElement(GetRestaurantFromDatabase(restaurant.Id), restaurant);
+	}
+
+	[Test]
+	public void Try_UpdElement_WhenNoChangeRestaurantName_Test()
+	{
+		var restaurant = CreateModel(Guid.NewGuid().ToString(), "name new", "test", "prev");
+		InsertRestaurantToDatabaseAndReturn(restaurant.Id, restaurantName: restaurant.RestaurantName!, prevRestaurantName: restaurant.PrevRestaurantName!, prevPrevRestaurantName: restaurant.PrevPrevRestaurantName!);
+		_restaurantStorageContract.UpdElement(restaurant);
+		AssertElement(GetRestaurantFromDatabase(restaurant.Id), restaurant);
+	}
+
+	[Test]
+	public void Try_UpdElement_WhenNoRecordWithThisId_Test()
+	{
+		Assert.That(() => _restaurantStorageContract.UpdElement(CreateModel(Guid.NewGuid().ToString())), Throws.TypeOf<ElementNotFoundException>());
+	}
+
+	[Test]
+	public void Try_UpdElement_WhenHaveRecordWithSameRestaurantName_Test()
+	{
+		var restaurant = CreateModel(Guid.NewGuid().ToString(), "name unique");
+		InsertRestaurantToDatabaseAndReturn(restaurant.Id, restaurantName: "some name");
+		InsertRestaurantToDatabaseAndReturn(Guid.NewGuid().ToString(), restaurantName: restaurant.RestaurantName);
+		Assert.That(() => _restaurantStorageContract.UpdElement(restaurant), Throws.TypeOf<ElementExistsException>());
+	}
+
+	[Test]
+	public void Try_DelElement_WhenNoRecordWithThisId_Test()
+	{
+		Assert.That(() => _restaurantStorageContract.DelElement(Guid.NewGuid().ToString()), Throws.TypeOf<ElementNotFoundException>());
+	}
+
+	private Restaurant InsertRestaurantToDatabaseAndReturn(string id, string restaurantName = "test", string prevRestaurantName = "prev", string prevPrevRestaurantName = "prevPrev")
+	{
+		var restaurant = new Restaurant() { Id = id, RestaurantName = restaurantName, PrevRestaurantName = prevRestaurantName, PrevPrevRestaurantName = prevPrevRestaurantName };
+		SPiluSZharuDbContext.Restaurants.Add(restaurant);
+		SPiluSZharuDbContext.SaveChanges();
+		return restaurant;
+	}
+
+	private static void AssertElement(RestaurantDataModel? actual, Restaurant expected)
+	{
+		Assert.That(actual, Is.Not.Null);
+		Assert.Multiple(() =>
+		{
+			Assert.That(actual.Id, Is.EqualTo(expected.Id));
+			Assert.That(actual.RestaurantName, Is.EqualTo(expected.RestaurantName));
+			Assert.That(actual.PrevRestaurantName, Is.EqualTo(expected.PrevRestaurantName));
+			Assert.That(actual.PrevPrevRestaurantName, Is.EqualTo(expected.PrevPrevRestaurantName));
+		});
+	}
+
+	private static RestaurantDataModel CreateModel(string id, string restaurantName = "test", string prevRestaurantName = "prev", string prevPrevRestaurantName = "prevPrev")
+		=> new(id, restaurantName, prevRestaurantName, prevPrevRestaurantName);
+
+	private Restaurant? GetRestaurantFromDatabase(string id) => SPiluSZharuDbContext.Restaurants.FirstOrDefault(x => x.Id == id);
+
+	private static void AssertElement(Restaurant? actual, RestaurantDataModel expected)
+	{
+		Assert.That(actual, Is.Not.Null);
+		Assert.Multiple(() =>
+		{
+			Assert.That(actual.Id, Is.EqualTo(expected.Id));
+			Assert.That(actual.RestaurantName, Is.EqualTo(expected.RestaurantName));
+			Assert.That(actual.PrevRestaurantName, Is.EqualTo(expected.PrevRestaurantName));
+			Assert.That(actual.PrevPrevRestaurantName, Is.EqualTo(expected.PrevPrevRestaurantName));
+		});
+	}
+}

SPiluSZharuProject/SPiluSZharuTests/StoragesContracts/SalaryStorageContractTests.cs

@@ -0,0 +1,148 @@
+using Microsoft.EntityFrameworkCore;
+using SPiluSZharuContracts.DataModels;
+using SPiluSZharuDatabase.Implementations;
+using SPiluSZharuDatabase.Models;
+
+namespace SPiluSZharuTests.StoragesContracts;
+
+[TestFixture]
+internal class SalaryStorageContractTests : BaseStorageContractTest
+{
+    private SalaryStorageContract _salaryStorageContract;
+    private Worker _worker;
+
+    [SetUp]
+    public void SetUp()
+    {
+        _salaryStorageContract = new SalaryStorageContract(SPiluSZharuDbContext);
+        _worker = InsertWorkerToDatabaseAndReturn();
+    }
+
+    [TearDown]
+    public void TearDown()
+    {
+        SPiluSZharuDbContext.Database.ExecuteSqlRaw("TRUNCATE \"Salaries\" CASCADE;");
+        SPiluSZharuDbContext.Database.ExecuteSqlRaw("TRUNCATE \"Workers\" CASCADE;");
+    }
+
+    [Test]
+    public void Try_GetList_WhenHaveRecords_Test()
+    {
+        var salary = InsertSalaryToDatabaseAndReturn(_worker.Id, workerSalary: 100);
+        InsertSalaryToDatabaseAndReturn(_worker.Id);
+        InsertSalaryToDatabaseAndReturn(_worker.Id);
+        var list = _salaryStorageContract.GetList(DateTime.UtcNow.AddDays(-10), DateTime.UtcNow.AddDays(10));
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(3));
+        AssertElement(list.First(), salary);
+    }
+
+    [Test]
+    public void Try_GetList_WhenNoRecords_Test()
+    {
+        var list = _salaryStorageContract.GetList(DateTime.UtcNow.AddDays(-10), DateTime.UtcNow.AddDays(10));
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Is.Empty);
+    }
+
+    [Test]
+    public void Try_GetList_OnlyInDatePeriod_Test()
+    {
+        InsertSalaryToDatabaseAndReturn(_worker.Id, salaryDate: DateTime.UtcNow.AddDays(-2));
+        InsertSalaryToDatabaseAndReturn(_worker.Id, salaryDate: DateTime.UtcNow.AddDays(-1).AddMinutes(-5));
+        InsertSalaryToDatabaseAndReturn(_worker.Id, salaryDate: DateTime.UtcNow.AddDays(-1).AddMinutes(5));
+        InsertSalaryToDatabaseAndReturn(_worker.Id, salaryDate: DateTime.UtcNow.AddDays(1).AddMinutes(-5));
+        InsertSalaryToDatabaseAndReturn(_worker.Id, salaryDate: DateTime.UtcNow.AddDays(1).AddMinutes(5));
+        InsertSalaryToDatabaseAndReturn(_worker.Id, salaryDate: DateTime.UtcNow.AddDays(-2));
+        var list = _salaryStorageContract.GetList(DateTime.UtcNow.AddDays(-1), DateTime.UtcNow.AddDays(1));
+        Assert.That(list, Is.Not.Null);
+        Assert.Multiple(() =>
+        {
+            Assert.That(list, Has.Count.EqualTo(2));
+        });
+    }
+
+    [Test]
+    public void Try_GetList_ByWorker_Test()
+    {
+        var worker = InsertWorkerToDatabaseAndReturn("name 2", "+7(555)555-55-55");
+        InsertSalaryToDatabaseAndReturn(_worker.Id);
+        InsertSalaryToDatabaseAndReturn(_worker.Id);
+        InsertSalaryToDatabaseAndReturn(worker.Id);
+        var list = _salaryStorageContract.GetList(DateTime.UtcNow.AddDays(-1), DateTime.UtcNow.AddDays(1), _worker.Id);
+        Assert.That(list, Is.Not.Null);
+        Assert.Multiple(() =>
+        {
+            Assert.That(list, Has.Count.EqualTo(2));
+            Assert.That(list.All(x => x.WorkerId == _worker.Id));
+        });
+    }
+
+    [Test]
+    public void Try_GetList_ByWorkerOnlyInDatePeriod_Test()
+    {
+        var worker = InsertWorkerToDatabaseAndReturn("name 2", "+7(555)555-55-55");
+        InsertSalaryToDatabaseAndReturn(_worker.Id, salaryDate: DateTime.UtcNow.AddDays(-2));
+        InsertSalaryToDatabaseAndReturn(_worker.Id, salaryDate: DateTime.UtcNow.AddDays(-1).AddMinutes(5));
+        InsertSalaryToDatabaseAndReturn(worker.Id, salaryDate: DateTime.UtcNow.AddDays(-1).AddMinutes(5));
+        InsertSalaryToDatabaseAndReturn(_worker.Id, salaryDate: DateTime.UtcNow.AddDays(1).AddMinutes(-5));
+        InsertSalaryToDatabaseAndReturn(worker.Id, salaryDate: DateTime.UtcNow.AddDays(1).AddMinutes(-5));
+        InsertSalaryToDatabaseAndReturn(_worker.Id, salaryDate: DateTime.UtcNow.AddDays(-2));
+        var list = _salaryStorageContract.GetList(DateTime.UtcNow.AddDays(-1), DateTime.UtcNow.AddDays(1), _worker.Id);
+        Assert.That(list, Is.Not.Null);
+        Assert.Multiple(() =>
+        {
+            Assert.That(list, Has.Count.EqualTo(2));
+            Assert.That(list.All(x => x.WorkerId == _worker.Id));
+        });
+    }
+
+    [Test]
+    public void Try_AddElement_Test()
+    {
+        var salary = CreateModel(_worker.Id);
+        _salaryStorageContract.AddElement(salary);
+        AssertElement(GetSalaryFromDatabaseByWorkerId(_worker.Id), salary);
+    }
+
+    private Worker InsertWorkerToDatabaseAndReturn(string workerFIO = "fio", string phoneNumber = "+7(777)777-77-77")
+    {
+        var worker = new Worker() { Id = Guid.NewGuid().ToString(), FIO = workerFIO, PostId = Guid.NewGuid().ToString(), PhoneNumber = phoneNumber, IsDeleted = false };
+        SPiluSZharuDbContext.Workers.Add(worker);
+        SPiluSZharuDbContext.SaveChanges();
+        return worker;
+    }
+
+    private Salary InsertSalaryToDatabaseAndReturn(string workerId, double workerSalary = 1, DateTime? salaryDate = null)
+    {
+        var salary = new Salary() { WorkerId = workerId, WorkerSalary = workerSalary, SalaryDate = salaryDate ?? DateTime.UtcNow };
+        SPiluSZharuDbContext.Salaries.Add(salary);
+        SPiluSZharuDbContext.SaveChanges();
+        return salary;
+    }
+
+    private static void AssertElement(SalaryDataModel? actual, Salary expected)
+    {
+        Assert.That(actual, Is.Not.Null);
+        Assert.Multiple(() =>
+        {
+            Assert.That(actual.WorkerId, Is.EqualTo(expected.WorkerId));
+            Assert.That(actual.Salary, Is.EqualTo(expected.WorkerSalary));
+        });
+    }
+
+    private static SalaryDataModel CreateModel(string workerId, double workerSalary = 1, DateTime? salaryDate = null)
+        => new(workerId, salaryDate ?? DateTime.UtcNow, workerSalary);
+
+    private Salary? GetSalaryFromDatabaseByWorkerId(string id) => SPiluSZharuDbContext.Salaries.FirstOrDefault(x => x.WorkerId == id);
+
+    private static void AssertElement(Salary? actual, SalaryDataModel expected)
+    {
+        Assert.That(actual, Is.Not.Null);
+        Assert.Multiple(() =>
+        {
+            Assert.That(actual.WorkerId, Is.EqualTo(expected.WorkerId));
+            Assert.That(actual.WorkerSalary, Is.EqualTo(expected.Salary));
+        });
+    }
+}

SPiluSZharuProject/SPiluSZharuTests/StoragesContracts/SaleStorageContractTests.cs

@@ -0,0 +1,296 @@
+using Microsoft.EntityFrameworkCore;
+using SPiluSZharuContracts.DataModels;
+using SPiluSZharuContracts.Enums;
+using SPiluSZharuContracts.Exceptions;
+using SPiluSZharuDatabase.Implementations;
+using SPiluSZharuDatabase.Models;
+
+namespace SPiluSZharuTests.StoragesContracts;
+
+[TestFixture]
+internal class SaleStorageContractTests : BaseStorageContractTest
+{
+    private SaleStorageContract _saletStorageContract;
+    private Restaurant _restaurant;
+    private Worker _worker;
+    private Product _product;
+    
+    [SetUp]
+    public void SetUp()
+    {
+        _saletStorageContract = new SaleStorageContract(SPiluSZharuDbContext);
+        _restaurant = InsertRestaurantToDatabaseAndReturn();
+        _worker = InsertWorkerToDatabaseAndReturn();
+        _product = InsertProductToDatabaseAndReturn();
+    }
+
+    [TearDown]
+    public void TearDown()
+    {
+        SPiluSZharuDbContext.Database.ExecuteSqlRaw("TRUNCATE \"Sales\" CASCADE;");
+        SPiluSZharuDbContext.Database.ExecuteSqlRaw("TRUNCATE \"Restaurants\" CASCADE;");
+        SPiluSZharuDbContext.Database.ExecuteSqlRaw("TRUNCATE \"Workers\" CASCADE;");
+        SPiluSZharuDbContext.Database.ExecuteSqlRaw("TRUNCATE \"Products\" CASCADE;");
+    }
+
+    [Test]
+    public void Try_GetList_WhenHaveRecords_Test()
+    {
+        var sale = InsertSaleToDatabaseAndReturn(_worker.Id, _restaurant.Id, products: [(_product.Id, 1)]);
+        InsertSaleToDatabaseAndReturn(_worker.Id, _restaurant.Id, products: [(_product.Id, 5)]);
+        InsertSaleToDatabaseAndReturn(_worker.Id, null, products: [(_product.Id, 10)]);
+        var list = _saletStorageContract.GetList();
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(3));
+        AssertElement(list.First(x => x.Id == sale.Id), sale);
+    }
+
+    [Test]
+    public void Try_GetList_WhenNoRecords_Test()
+    {
+        var list = _saletStorageContract.GetList();
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Is.Empty);
+    }
+
+    [Test]
+    public void Try_GetList_ByPeriod_Test()
+    {
+        InsertSaleToDatabaseAndReturn(_worker.Id, _restaurant.Id, saleDate: DateTime.UtcNow.AddDays(-1).AddMinutes(-3), products: [(_product.Id, 1)]);
+        InsertSaleToDatabaseAndReturn(_worker.Id, _restaurant.Id, saleDate: DateTime.UtcNow.AddDays(-1).AddMinutes(3), products: [(_product.Id, 1)]);
+        InsertSaleToDatabaseAndReturn(_worker.Id, null, saleDate: DateTime.UtcNow.AddDays(1).AddMinutes(-3), products: [(_product.Id, 1)]);
+        InsertSaleToDatabaseAndReturn(_worker.Id, null, saleDate: DateTime.UtcNow.AddDays(1).AddMinutes(3), products: [(_product.Id, 1)]);
+        var list = _saletStorageContract.GetList(startDate: DateTime.UtcNow.AddDays(-1), endDate: DateTime.UtcNow.AddDays(1));
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(2));
+    }
+
+    [Test]
+    public void Try_GetList_ByWorkerId_Test()
+    {
+        var worker = InsertWorkerToDatabaseAndReturn("Other worker", "+7(555)555-55-55");
+        InsertSaleToDatabaseAndReturn(_worker.Id, _restaurant.Id, products: [(_product.Id, 1)]);
+        InsertSaleToDatabaseAndReturn(_worker.Id, _restaurant.Id, products: [(_product.Id, 1)]);
+        InsertSaleToDatabaseAndReturn(worker.Id, null, products: [(_product.Id, 1)]);
+        var list = _saletStorageContract.GetList(workerId: _worker.Id);
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(2));
+        Assert.That(list.All(x => x.WorkerId == _worker.Id));
+    }
+
+    [Test]
+    public void Try_GetList_ByRestaurantId_Test()
+    {
+        var restaurant = InsertRestaurantToDatabaseAndReturn("Other restaurant");
+        InsertSaleToDatabaseAndReturn(_worker.Id, _restaurant.Id, products: [(_product.Id, 1)]);
+        InsertSaleToDatabaseAndReturn(_worker.Id, _restaurant.Id, products: [(_product.Id, 1)]);
+        InsertSaleToDatabaseAndReturn(_worker.Id, restaurant.Id, products: [(_product.Id, 1)]);
+        InsertSaleToDatabaseAndReturn(_worker.Id, null, products: [(_product.Id, 1)]);
+        var list = _saletStorageContract.GetList(restaurantId: _restaurant.Id);
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(2));
+        Assert.That(list.All(x => x.RestaurantId == _restaurant.Id));
+    }
+
+    [Test]
+    public void Try_GetList_ByProductId_Test()
+    {
+        var product = InsertProductToDatabaseAndReturn("Other name");
+        InsertSaleToDatabaseAndReturn(_worker.Id, _restaurant.Id, products: [(_product.Id, 5)]);
+        InsertSaleToDatabaseAndReturn(_worker.Id, _restaurant.Id, products: [(_product.Id, 1), (product.Id, 4)]);
+        InsertSaleToDatabaseAndReturn(_worker.Id, null, products: [(product.Id, 1)]);
+        InsertSaleToDatabaseAndReturn(_worker.Id, null, products: [(product.Id, 1), (_product.Id, 1)]);
+        var list = _saletStorageContract.GetList(productId: _product.Id);
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(3));
+        Assert.That(list.All(x => x.Products.Any(y => y.ProductId == _product.Id)));
+    }
+
+    [Test]
+    public void Try_GetList_ByAllParameters_Test()
+    {
+        var worker = InsertWorkerToDatabaseAndReturn("Other worker", "+7(555)555-55-55");
+        var restaurant = InsertRestaurantToDatabaseAndReturn("Other restaurant");
+        var product = InsertProductToDatabaseAndReturn("Other name");
+        InsertSaleToDatabaseAndReturn(_worker.Id, _restaurant.Id, saleDate: DateTime.UtcNow.AddDays(-1).AddMinutes(-3), products: [(_product.Id, 1)]);
+        InsertSaleToDatabaseAndReturn(worker.Id, null, saleDate: DateTime.UtcNow.AddDays(-1).AddMinutes(3), products: [(_product.Id, 1)]);
+        InsertSaleToDatabaseAndReturn(worker.Id, _restaurant.Id, saleDate: DateTime.UtcNow.AddDays(-1).AddMinutes(3), products: [(_product.Id, 1)]);
+        InsertSaleToDatabaseAndReturn(worker.Id, _restaurant.Id, saleDate: DateTime.UtcNow.AddDays(-1).AddMinutes(3), products: [(product.Id, 1)]);
+        InsertSaleToDatabaseAndReturn(_worker.Id, restaurant.Id, saleDate: DateTime.UtcNow.AddDays(1).AddMinutes(-3), products: [(_product.Id, 1)]);
+        InsertSaleToDatabaseAndReturn(_worker.Id, _restaurant.Id, saleDate: DateTime.UtcNow.AddDays(1).AddMinutes(-3), products: [(product.Id, 1)]);
+        InsertSaleToDatabaseAndReturn(worker.Id, null, saleDate: DateTime.UtcNow.AddDays(1).AddMinutes(-3), products: [(_product.Id, 1)]);
+        var list = _saletStorageContract.GetList(startDate: DateTime.UtcNow.AddDays(-1), endDate: DateTime.UtcNow.AddDays(1), workerId: _worker.Id, restaurantId: _restaurant.Id, productId: product.Id);
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(1));
+    }
+
+    [Test]
+    public void Try_GetElementById_WhenHaveRecord_Test()
+    {
+        var sale = InsertSaleToDatabaseAndReturn(_worker.Id, _restaurant.Id, products: [(_product.Id, 1)]);
+        AssertElement(_saletStorageContract.GetElementById(sale.Id), sale);
+    }
+
+    [Test]
+    public void Try_GetElementById_WhenNoRecord_Test()
+    {
+        InsertSaleToDatabaseAndReturn(_worker.Id, _restaurant.Id, products: [(_product.Id, 1)]);
+        Assert.That(() => _saletStorageContract.GetElementById(Guid.NewGuid().ToString()), Is.Null);
+    }
+
+    [Test]
+    public void Try_GetElementById_WhenRecordHasCanceled_Test()
+    {
+        var sale = InsertSaleToDatabaseAndReturn(_worker.Id, _restaurant.Id, products: [(_product.Id, 1)], isCancel: true);
+        AssertElement(_saletStorageContract.GetElementById(sale.Id), sale);
+    }
+
+    [Test]
+    public void Try_AddElement_Test()
+    {
+        var sale = CreateModel(Guid.NewGuid().ToString(), _worker.Id, _restaurant.Id, 1, false, [_product.Id]);
+        _saletStorageContract.AddElement(sale);
+        AssertElement(GetSaleFromDatabaseById(sale.Id), sale);
+    }
+
+    [Test]
+    public void Try_AddElement_WhenIsDeletedIsTrue_Test()
+    {
+        var sale = CreateModel(Guid.NewGuid().ToString(), _worker.Id, _restaurant.Id, 1, true, [_product.Id]);
+        Assert.That(() => _saletStorageContract.AddElement(sale), Throws.Nothing);
+        AssertElement(GetSaleFromDatabaseById(sale.Id), CreateModel(sale.Id, _worker.Id, _restaurant.Id, 1, false, [_product.Id]));
+    }
+
+    [Test]
+    public void Try_DelElement_Test()
+    {
+        var sale = InsertSaleToDatabaseAndReturn(_worker.Id, _restaurant.Id, products: [(_product.Id, 1)], isCancel: false);
+        _saletStorageContract.DelElement(sale.Id);
+        var element = GetSaleFromDatabaseById(sale.Id);
+        Assert.Multiple(() =>
+        {
+            Assert.That(element, Is.Not.Null);
+            Assert.That(element!.IsCancel);
+        });
+    }
+
+    [Test]
+    public void Try_DelElement_WhenNoRecordWithThisId_Test()
+    {
+        Assert.That(() => _saletStorageContract.DelElement(Guid.NewGuid().ToString()), Throws.TypeOf<ElementNotFoundException>());
+    }
+
+    [Test]
+    public void Try_DelElement_WhenRecordWasCanceled_Test()
+    {
+        var sale = InsertSaleToDatabaseAndReturn(_worker.Id, _restaurant.Id, products: [(_product.Id, 1)], isCancel: true);
+        Assert.That(() => _saletStorageContract.DelElement(sale.Id), Throws.TypeOf<ElementDeletedException>());
+    }
+
+    private Restaurant InsertRestaurantToDatabaseAndReturn(string restaurantName = "test")
+    {
+        var restaurant = new Restaurant() { Id = Guid.NewGuid().ToString(), RestaurantName = restaurantName };
+        SPiluSZharuDbContext.Restaurants.Add(restaurant);
+        SPiluSZharuDbContext.SaveChanges();
+        return restaurant;
+    }
+
+    private Worker InsertWorkerToDatabaseAndReturn(string fio = "test", string phoneNumber = "+7(777)777-77-77")
+    {
+        var worker = new Worker() { Id = Guid.NewGuid().ToString(), FIO = fio, PostId = Guid.NewGuid().ToString(), PhoneNumber = phoneNumber };
+        SPiluSZharuDbContext.Workers.Add(worker);
+        SPiluSZharuDbContext.SaveChanges();
+        return worker;
+    }
+
+    private Product InsertProductToDatabaseAndReturn(string productName = "test", ProductType productType = ProductType.Burgers, double price = 1, bool isDeleted = false)
+    {
+        var product = new Product() { Id = Guid.NewGuid().ToString(), ProductName = productName, ProductType = productType, Price = price, IsDeleted = isDeleted };
+        SPiluSZharuDbContext.Products.Add(product);
+        SPiluSZharuDbContext.SaveChanges();
+        return product;
+    }
+
+    private Sale InsertSaleToDatabaseAndReturn(string workerId, string? restaurantId, DateTime? saleDate = null, double sum = 1, bool isCancel = false, List<(string, int)>? products = null)
+    {
+        var sale = new Sale() { WorkerId = workerId, RestaurantId = restaurantId, SaleDate = saleDate ?? DateTime.UtcNow, Sum = sum, IsCancel = isCancel, SaleProducts = [] };
+        if (products is not null)
+        {
+            foreach (var elem in products)
+            {
+                sale.SaleProducts.Add(new SaleProduct { ProductId = elem.Item1, SaleId = sale.Id, Count = elem.Item2 });
+            }
+        }
+        SPiluSZharuDbContext.Sales.Add(sale);
+        SPiluSZharuDbContext.SaveChanges();
+        return sale;
+    }
+
+    private static void AssertElement(SaleDataModel? actual, Sale expected)
+    {
+        Assert.That(actual, Is.Not.Null);
+        Assert.Multiple(() =>
+        {
+            Assert.That(actual.Id, Is.EqualTo(expected.Id));
+            Assert.That(actual.WorkerId, Is.EqualTo(expected.WorkerId));
+            Assert.That(actual.RestaurantId, Is.EqualTo(expected.RestaurantId));
+            Assert.That(actual.IsCancel, Is.EqualTo(expected.IsCancel));
+        });
+
+        if (expected.SaleProducts is not null)
+        {
+            Assert.That(actual.Products, Is.Not.Null);
+            Assert.That(actual.Products, Has.Count.EqualTo(expected.SaleProducts.Count));
+            for (int i = 0; i < actual.Products.Count; ++i)
+            {
+                Assert.Multiple(() =>
+                {
+                    Assert.That(actual.Products[i].ProductId, Is.EqualTo(expected.SaleProducts[i].ProductId));
+                    Assert.That(actual.Products[i].Count, Is.EqualTo(expected.SaleProducts[i].Count));
+                });
+            }
+        }
+        else
+        {
+            Assert.That(actual.Products, Is.Null);
+        }
+    }
+
+    private static SaleDataModel CreateModel(string id, string workerId, string? restaurantId, double sum, bool isCancel, List<string> productIds)
+    {
+        var products = productIds.Select(x => new SaleProductDataModel(id, x, 1)).ToList();
+        return new(id, workerId, restaurantId, sum, isCancel, products);
+    }
+
+    private Sale? GetSaleFromDatabaseById(string id) => SPiluSZharuDbContext.Sales.Include(x => x.SaleProducts).FirstOrDefault(x => x.Id == id);
+
+    private static void AssertElement(Sale? actual, SaleDataModel expected)
+    {
+        Assert.That(actual, Is.Not.Null);
+        Assert.Multiple(() =>
+        {
+            Assert.That(actual.Id, Is.EqualTo(expected.Id));
+            Assert.That(actual.WorkerId, Is.EqualTo(expected.WorkerId));
+            Assert.That(actual.RestaurantId, Is.EqualTo(expected.RestaurantId));
+            Assert.That(actual.IsCancel, Is.EqualTo(expected.IsCancel));
+        });
+
+        if (expected.Products is not null)
+        {
+            Assert.That(actual.SaleProducts, Is.Not.Null);
+            Assert.That(actual.SaleProducts, Has.Count.EqualTo(expected.Products.Count));
+            for (int i = 0; i < actual.SaleProducts.Count; ++i)
+            {
+                Assert.Multiple(() =>
+                {
+                    Assert.That(actual.SaleProducts[i].ProductId, Is.EqualTo(expected.Products[i].ProductId));
+                    Assert.That(actual.SaleProducts[i].Count, Is.EqualTo(expected.Products[i].Count));
+                });
+            }
+        }
+        else
+        {
+            Assert.That(actual.SaleProducts, Is.Null);
+        }
+    }
+}

SPiluSZharuProject/SPiluSZharuTests/StoragesContracts/WorkerStorageContractTests.cs

@@ -0,0 +1,239 @@
+using Microsoft.EntityFrameworkCore;
+using SPiluSZharuContracts.DataModels;
+using SPiluSZharuContracts.Exceptions;
+using SPiluSZharuDatabase.Implementations;
+using SPiluSZharuDatabase.Models;
+
+namespace SPiluSZharuTests.StoragesContracts;
+
+[TestFixture]
+internal class WorkerStorageContractTests : BaseStorageContractTest
+{
+    private WorkerStorageContract _workerStorageContract;
+
+    [SetUp]
+    public void SetUp()
+    {
+        _workerStorageContract = new WorkerStorageContract(SPiluSZharuDbContext);
+    }
+
+    [TearDown]
+    public void TearDown()
+    {
+        SPiluSZharuDbContext.Database.ExecuteSqlRaw("TRUNCATE \"Workers\" CASCADE;");
+    }
+
+    [Test]
+    public void Try_GetList_WhenHaveRecords_Test()
+    {
+        var worker = InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString(), "fio 1", phoneNumber:"+7(555)555-55-55");
+        InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString(), "fio 2", phoneNumber: "+7(333)333-33-33");
+        InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString(), "fio 3", phoneNumber: "+7(111)111-11-11");
+        var list = _workerStorageContract.GetList();
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(3));
+        AssertElement(list.First(), worker);
+    }
+
+    [Test]
+    public void Try_GetList_WhenNoRecords_Test()
+    {
+        var list = _workerStorageContract.GetList();
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Is.Empty);
+    }
+
+    [Test]
+    public void Try_GetList_ByPostId_Test()
+    {
+        var postId = Guid.NewGuid().ToString();
+        InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString(), "fio 1", postId, "+7(555)555-55-55");
+        InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString(), "fio 2", postId, "+7(333)333-33-33");
+        InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString(), "fio 3", phoneNumber: "+7(111)111-11-11");
+        var list = _workerStorageContract.GetList(postId: postId);
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(2));
+        Assert.That(list.All(x => x.PostId == postId));
+    }
+
+    [Test]
+    public void Try_GetList_ByBirthDate_Test()
+    {
+        InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString(), "fio 1", phoneNumber: "+7(555)555-55-55", birthDate: DateTime.UtcNow.AddYears(-25));
+        InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString(), "fio 2", phoneNumber: "+7(333)333-33-33", birthDate: DateTime.UtcNow.AddYears(-21));
+        InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString(), "fio 3", phoneNumber: "+7(111)111-11-11", birthDate: DateTime.UtcNow.AddYears(-20));
+        InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString(), "fio 4", phoneNumber: "+7(222)222-22-22", birthDate: DateTime.UtcNow.AddYears(-19));
+        var list = _workerStorageContract.GetList(fromBirthDate: DateTime.UtcNow.AddYears(-21).AddMinutes(-1), toBirthDate: DateTime.UtcNow.AddYears(-20).AddMinutes(1));
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(2));
+    }
+
+    [Test]
+    public void Try_GetList_ByEmploymentDate_Test()
+    {
+        InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString(), "fio 1", phoneNumber: "+7(555)555-55-55", employmentDate: DateTime.UtcNow.AddDays(-2));
+        InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString(), "fio 2", phoneNumber: "+7(333)333-33-33", employmentDate: DateTime.UtcNow.AddDays(-1));
+        InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString(), "fio 3", phoneNumber: "+7(111)111-11-11", employmentDate: DateTime.UtcNow.AddDays(1));
+        InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString(), "fio 4", phoneNumber: "+7(222)222-22-22", employmentDate: DateTime.UtcNow.AddDays(2));
+        var list = _workerStorageContract.GetList(fromEmploymentDate: DateTime.UtcNow.AddDays(-1).AddMinutes(-1), toEmploymentDate: DateTime.UtcNow.AddDays(1).AddMinutes(1));
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(2));
+    }
+
+    [Test]
+    public void Try_GetList_ByAllParameters_Test()
+    {
+        var postId = Guid.NewGuid().ToString();
+        InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString(), "fio 1", postId, "+7(555)555-55-55", birthDate: DateTime.UtcNow.AddYears(-25), employmentDate: DateTime.UtcNow.AddDays(-2));
+        InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString(), "fio 2", postId, "+7(333)333-33-33", birthDate: DateTime.UtcNow.AddYears(-22), employmentDate: DateTime.UtcNow.AddDays(-1));
+        InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString(), "fio 3", postId, "+7(111)111-11-11", birthDate: DateTime.UtcNow.AddYears(-21), employmentDate: DateTime.UtcNow.AddDays(-1));
+        InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString(), "fio 4", phoneNumber: "+7(222)222-22-22", birthDate: DateTime.UtcNow.AddYears(-20), employmentDate: DateTime.UtcNow.AddDays(1));
+        var list = _workerStorageContract.GetList(postId: postId, fromBirthDate: DateTime.UtcNow.AddYears(-21).AddMinutes(-1), toBirthDate: DateTime.UtcNow.AddYears(-20).AddMinutes(1), fromEmploymentDate: DateTime.UtcNow.AddDays(-1).AddMinutes(-1), toEmploymentDate: DateTime.UtcNow.AddDays(1).AddMinutes(1));
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(1));
+    }
+
+    [Test]
+    public void Try_GetElementById_WhenHaveRecord_Test()
+    {
+        var worker = InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString());
+        AssertElement(_workerStorageContract.GetElementById(worker.Id), worker);
+    }
+
+    [Test]
+    public void Try_GetElementById_WhenNoRecord_Test()
+    {
+        Assert.That(() => _workerStorageContract.GetElementById(Guid.NewGuid().ToString()), Is.Null);
+    }
+
+    [Test]
+    public void Try_GetElementByFIO_WhenHaveRecord_Test()
+    {
+        var worker = InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString());
+        AssertElement(_workerStorageContract.GetElementByFIO(worker.FIO), worker);
+    }
+
+    [Test]
+    public void Try_GetElementByFIO_WhenNoRecord_Test()
+    {
+        Assert.That(() => _workerStorageContract.GetElementByFIO("New Fio"), Is.Null);
+    }
+
+    [Test]
+    public void Try_GetElementByPhoneNumber_WhenHaveRecord_Test()
+    {
+        var worker = InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString());
+        AssertElement(_workerStorageContract.GetElementByPhoneNumber(worker.PhoneNumber), worker);
+    }
+
+    [Test]
+    public void Try_GetElementByPhoneNumber_WhenNoRecord_Test()
+    {
+        InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString());
+        Assert.That(() => _workerStorageContract.GetElementByPhoneNumber("+7(888)888-88-88"), Is.Null);
+    }
+
+    [Test]
+    public void Try_AddElement_Test()
+    {
+        var worker = CreateModel(Guid.NewGuid().ToString());
+        _workerStorageContract.AddElement(worker);
+        AssertElement(GetWorkerFromDatabase(worker.Id), worker);
+    }
+
+    [Test]
+    public void Try_AddElement_WhenHaveRecordWithSameId_Test()
+    {
+        var worker = CreateModel(Guid.NewGuid().ToString());
+        InsertWorkerToDatabaseAndReturn(worker.Id);
+        Assert.That(() => _workerStorageContract.AddElement(worker), Throws.TypeOf<ElementExistsException>());
+    }
+
+    [Test]
+    public void Try_UpdElement_Test()
+    {
+        var worker = CreateModel(Guid.NewGuid().ToString(), "New Fio", "+7(555)555-55-55");
+        InsertWorkerToDatabaseAndReturn(worker.Id);
+        _workerStorageContract.UpdElement(worker);
+        AssertElement(GetWorkerFromDatabase(worker.Id), worker);
+    }
+
+    [Test]
+    public void Try_UpdElement_WhenNoRecordWithThisId_Test()
+    {
+        Assert.That(() => _workerStorageContract.UpdElement(CreateModel(Guid.NewGuid().ToString())), Throws.TypeOf<ElementNotFoundException>());
+    }
+
+    [Test]
+    public void Try_UpdElement_WhenNoRecordWasDeleted_Test()
+    {
+        var worker = CreateModel(Guid.NewGuid().ToString(), "+7(555)555-55-55");
+        InsertWorkerToDatabaseAndReturn(worker.Id, isDeleted: true);
+        Assert.That(() => _workerStorageContract.UpdElement(worker), Throws.TypeOf<ElementNotFoundException>());
+    }
+
+    [Test]
+    public void Try_DelElement_Test()
+    {
+        var worker = InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString());
+        _workerStorageContract.DelElement(worker.Id);
+        var element = GetWorkerFromDatabase(worker.Id);
+        Assert.That(element, Is.Not.Null);
+        Assert.That(element.IsDeleted);
+    }
+
+    [Test]
+    public void Try_DelElement_WhenNoRecordWithThisId_Test()
+    {
+        Assert.That(() => _workerStorageContract.DelElement(Guid.NewGuid().ToString()), Throws.TypeOf<ElementNotFoundException>());
+    }
+
+    [Test]
+    public void Try_DelElement_WhenNoRecordWasDeleted_Test()
+    {
+        var worker = CreateModel(Guid.NewGuid().ToString());
+        InsertWorkerToDatabaseAndReturn(worker.Id, isDeleted: true);
+        Assert.That(() => _workerStorageContract.DelElement(worker.Id), Throws.TypeOf<ElementNotFoundException>());
+    }
+
+    private Worker InsertWorkerToDatabaseAndReturn(string id, string fio = "test", string? postId = null, string phoneNumber = "+7(777)777-77-77", DateTime? birthDate = null, DateTime? employmentDate = null, bool isDeleted = false)
+    {
+        var worker = new Worker() { Id = id, FIO = fio, PostId = postId ?? Guid.NewGuid().ToString(), PhoneNumber = phoneNumber, BirthDate = birthDate ?? DateTime.UtcNow.AddYears(-20), EmploymentDate = employmentDate ?? DateTime.UtcNow, IsDeleted = isDeleted };
+        SPiluSZharuDbContext.Workers.Add(worker);
+        SPiluSZharuDbContext.SaveChanges();
+        return worker;
+    }
+
+    private static void AssertElement(WorkerDataModel? actual, Worker expected)
+    {
+        Assert.That(actual, Is.Not.Null);
+        Assert.Multiple(() =>
+        {
+            Assert.That(actual.Id, Is.EqualTo(expected.Id));
+            Assert.That(actual.PostId, Is.EqualTo(expected.PostId));
+            Assert.That(actual.FIO, Is.EqualTo(expected.FIO));
+            Assert.That(actual.BirthDate, Is.EqualTo(expected.BirthDate));
+            Assert.That(actual.EmploymentDate, Is.EqualTo(expected.EmploymentDate));
+            Assert.That(actual.IsDeleted, Is.EqualTo(expected.IsDeleted));
+        });
+    }
+
+    private static WorkerDataModel CreateModel(string id, string fio = "fio", string? postId = null, string phoneNumber = "+7(777)777-77-77", DateTime? birthDate = null, DateTime? employmentDate = null, bool isDeleted = false) =>
+        new(id, fio, postId ?? Guid.NewGuid().ToString(), phoneNumber, birthDate ?? DateTime.UtcNow.AddYears(-20), employmentDate ?? DateTime.UtcNow, isDeleted);
+
+    private Worker? GetWorkerFromDatabase(string id) => SPiluSZharuDbContext.Workers.FirstOrDefault(x => x.Id == id);
+
+    private static void AssertElement(Worker? actual, WorkerDataModel expected)
+    {
+        Assert.That(actual, Is.Not.Null);
+        Assert.Multiple(() =>
+        {
+            Assert.That(actual.Id, Is.EqualTo(expected.Id));
+            Assert.That(actual.PostId, Is.EqualTo(expected.PostId));
+            Assert.That(actual.FIO, Is.EqualTo(expected.FIO));
+            Assert.That(actual.BirthDate, Is.EqualTo(expected.BirthDate));
+            Assert.That(actual.EmploymentDate, Is.EqualTo(expected.EmploymentDate));
+            Assert.That(actual.IsDeleted, Is.EqualTo(expected.IsDeleted));
+        });
+    }
+}