finalfinal

Romashki/Romashki.sln

@@ -7,6 +7,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "RomashkiContract", "Romashk
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "RomashkiTests", "RomashkiTests\RomashkiTests.csproj", "{2D70C332-09B5-457D-95C9-30582CBA73E6}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "RomashkiBusinessLogic", "RomashkiBusinessLogic\RomashkiBusinessLogic.csproj", "{DDA1EFF5-DA12-43AD-96BD-56C2A7D26804}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -21,8 +23,15 @@ Global
 		{2D70C332-09B5-457D-95C9-30582CBA73E6}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{2D70C332-09B5-457D-95C9-30582CBA73E6}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{2D70C332-09B5-457D-95C9-30582CBA73E6}.Release|Any CPU.Build.0 = Release|Any CPU
+		{DDA1EFF5-DA12-43AD-96BD-56C2A7D26804}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{DDA1EFF5-DA12-43AD-96BD-56C2A7D26804}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{DDA1EFF5-DA12-43AD-96BD-56C2A7D26804}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{DDA1EFF5-DA12-43AD-96BD-56C2A7D26804}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
 	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {A4ACBBFB-5FE2-4CE2-8379-82D1DFF89026}
+	EndGlobalSection
 EndGlobal

Romashki/RomashkiBusinessLogic/Implementations/BuyerBusinessLogicContract.cs

@@ -0,0 +1,76 @@
+using RomashkiContract.BusinessLogicContracts;
+using RomashkiContract.StoragesContracts;
+using Microsoft.Extensions.Logging;
+using RomashkiContracts.DataModels;
+using RomashkiContract.Exceptions;
+using RomashkiContracts.Extensions;
+using System.Text.Json;
+using System.Text.RegularExpressions;
+using RomashkiContracts.Exceptions;
+
+namespace RomashkiBusinessLogic.Implementations;
+
+internal class BuyerBusinessLogicContract(IBuyerStorageContract buyerStorageContract,
+    ILogger logger) : IBuyerBusinessLogicContract
+{
+    private readonly ILogger _logger = logger;
+    private readonly IBuyerStorageContract _buyerStorageContract =
+    buyerStorageContract;
+    public List<BuyerDataModel> GetAllBuyers()
+    {
+        _logger.LogInformation("GetAllBuyers");
+    return _buyerStorageContract.GetList() ?? throw new NullListException();
+    }
+    public BuyerDataModel GetBuyerByData(string data)
+    {
+        _logger.LogInformation("Get element by data: {data}", data);
+        if (data.IsEmpty())
+        {
+            throw new ArgumentNullException(nameof(data));
+        }
+        if (data.IsGuid())
+        {
+            return _buyerStorageContract.GetElementById(data) ?? throw new
+            ElementNotFoundException(data);
+        }
+        if (Regex.IsMatch(data, @"([a-zA-Z0-9._-]+@[a-zA-Z0-9._-]+\.[a-zA-Z0-9_-]+)"))
+        {
+            return _buyerStorageContract.GetElementByEmail(data) ??
+            throw new ElementNotFoundException(data);
+        }
+        return _buyerStorageContract.GetElementByFIO(data) ?? throw new
+        ElementNotFoundException(data);
+    }
+    public void InsertBuyer(BuyerDataModel buyerDataModel)
+    {
+        _logger.LogInformation("New data: {json}",
+        JsonSerializer.Serialize(buyerDataModel));
+        ArgumentNullException.ThrowIfNull(buyerDataModel);
+        buyerDataModel.Validate();
+        _buyerStorageContract.AddElement(buyerDataModel);
+    }
+    public void UpdateBuyer(BuyerDataModel buyerDataModel)
+    {
+        _logger.LogInformation("Update data: {json}",
+        JsonSerializer.Serialize(buyerDataModel));
+        ArgumentNullException.ThrowIfNull(buyerDataModel);
+        buyerDataModel.Validate();
+        _buyerStorageContract.UpdElement(buyerDataModel);
+    }
+    public void DeleteBuyer(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");
+        }
+        _buyerStorageContract.DelElement(id);
+    }
+
+  
+}
+

Romashki/RomashkiBusinessLogic/Implementations/DiscountBusinessLogicContract.cs

@@ -0,0 +1,138 @@
+using System;
+using System.Collections.Generic;
+using Microsoft.Extensions.Logging;
+using RomashkiContract.BusinessLogicContracts;
+using RomashkiContract.DataModels;
+using RomashkiContract.Exceptions;
+using RomashkiContract.Extensions;
+using RomashkiContract.StoragesContracts;
+using RomashkiContracts.DataModels;
+using RomashkiContracts.Exceptions;
+
+namespace RomashkiBusinessLogic.Implementations;
+
+internal class DiscountBusinessLogicContract : IDiscountBusinessLogicContract
+{
+    private readonly ILogger _logger;
+    private readonly IDiscountStorageContract _discountStorageContract;
+    private readonly ISaleStorageContract _saleStorageContract;
+    private readonly IPostStorageContract _postStorageContract;
+    private readonly IBuyerStorageContract _buyerStorageContract;
+
+    public DiscountBusinessLogicContract(
+        IDiscountStorageContract discountStorageContract,
+        ISaleStorageContract saleStorageContract,
+        IPostStorageContract postStorageContract,
+        IBuyerStorageContract buyerStorageContract,
+        ILogger logger)
+    {
+        _logger = logger;
+        _discountStorageContract = discountStorageContract;
+        _saleStorageContract = saleStorageContract;
+        _postStorageContract = postStorageContract;
+        _buyerStorageContract = buyerStorageContract;
+    }
+
+    public List<DiscountDataModel> GetAllDiscountsByPeriod(DateTime fromDate, DateTime toDate)
+    {
+        _logger.LogInformation("GetAllDiscountsByPeriod params: {fromDate}, {toDate}", fromDate, toDate);
+
+        if (fromDate.IsDateNotOlder(toDate))
+        {
+            throw new IncorrectDatesException(fromDate, toDate);
+        }
+
+        var discounts = _discountStorageContract.GetList(fromDate, toDate);
+        if (discounts == null)
+        {
+            throw new NullListException();
+        }
+
+        return discounts;
+    }
+
+    public List<DiscountDataModel> GetAllDiscountsByPeriodByBuyer(DateTime fromDate, DateTime toDate, string buyerId)
+    {
+        _logger.LogInformation("GetAllDiscountsByPeriodByBuyer params: {fromDate}, {toDate}, {buyerId}", fromDate, toDate, buyerId);
+
+        if (fromDate.IsDateNotOlder(toDate))
+        {
+            throw new IncorrectDatesException(fromDate, toDate);
+        }
+
+        if (string.IsNullOrEmpty(buyerId))
+        {
+            throw new ArgumentNullException(nameof(buyerId));
+        }
+
+        if (!Guid.TryParse(buyerId, out _))
+        {
+            throw new ValidationException("The value in the field buyerId is not a unique identifier.");
+        }
+
+        var discounts = _discountStorageContract.GetList(fromDate, toDate, buyerId);
+        if (discounts == null)
+        {
+            throw new NullListException();
+        }
+
+        return discounts;
+    }
+
+    public void CalculateDiscountsByMounth(DateTime date)
+    {
+        _logger.LogInformation("CalculateDiscountsByMounth: {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));
+
+        List<BuyerDataModel> buyers;
+        try
+        {
+            buyers = _buyerStorageContract.GetList();
+        }
+        catch (Exception ex)
+        {
+            throw new StorageException(ex);
+        }
+
+        if (buyers == null || buyers.Count == 0)
+        {
+            throw new NullListException();
+        }
+
+        foreach (var buyer in buyers)
+        {
+            double sales;
+            try
+            {
+                var salesList = _saleStorageContract.GetList(startDate, finishDate, buyerId: buyer.Id);
+                sales = salesList?.Where(x => x.BuyerId == buyer.Id).Sum(x => x.Sum) ?? 0;
+            }
+            catch (Exception ex)
+            {
+                throw new StorageException(ex);
+            }
+
+            var discountSize = sales * 0.001;
+
+            _logger.LogDebug("The buyer {buyerId} was granted a discount of {discountSize}", buyer.Id, discountSize);
+
+            try
+            {
+                _discountStorageContract.AddElement(new DiscountDataModel(buyer.Id, finishDate, discountSize));
+            }
+            catch (Exception ex)
+            {
+                throw new StorageException(ex);
+            }
+        }
+    }
+
+
+
+}
+
+
+
+

Romashki/RomashkiBusinessLogic/Implementations/PostBusinessLogicContract.cs

@@ -0,0 +1,101 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Text.Json;
+using System.Threading.Tasks;
+using Microsoft.Extensions.Logging;
+using RomashkiContract.BusinessLogicContracts;
+using RomashkiContract.Exceptions;
+using RomashkiContract.StoragesContracts;
+using RomashkiContracts.DataModels;
+using RomashkiContracts.Enums;
+using RomashkiContracts.Exceptions;
+using RomashkiContracts.Extensions;
+
+namespace RomashkiBusinessLogic.Implementations;
+
+internal class PostBusinessLogicContract(IPostStorageContract
+postStorageContract, ILogger logger) : IPostBusinessLogicContract
+{
+
+    private readonly ILogger _logger = logger;
+    private readonly IPostStorageContract _postStorageContract =
+    postStorageContract;
+    public List<PostDataModel> GetAllPosts(bool onlyActive = true)
+    {
+        _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);
+    }
+
+    
+}

Romashki/RomashkiBusinessLogic/Implementations/ProductBusinessLogicContract.cs

@@ -0,0 +1,88 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Text.Json;
+using System.Threading.Tasks;
+using Microsoft.Extensions.Logging;
+using RomashkiContract.BusinessLogicContracts;
+using RomashkiContract.Exceptions;
+using RomashkiContract.StoragesContracts;
+using RomashkiContracts.DataModels;
+using RomashkiContracts.Enums;
+using RomashkiContracts.Exceptions;
+using RomashkiContracts.Extensions;
+
+namespace RomashkiBusinessLogic.Implementations;
+
+internal class ProductBusinessLogicContract(IProductStorageContract
+productStorageContract, ILogger logger) : IProductBusinessLogicContract
+{
+    private readonly ILogger _logger = logger;
+    private readonly IProductStorageContract _productStorageContract = productStorageContract;
+    public List<ProductDataModel> GetAllProducts(bool onlyActive)
+    {
+        _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);
+    }
+
+
+    
+}
+
+

Romashki/RomashkiBusinessLogic/Implementations/SaleBusinessLogicContract.cs

@@ -0,0 +1,132 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Text.Json;
+using System.Threading.Tasks;
+using Microsoft.Extensions.Logging;
+using RomashkiContract.BusinessLogicContracts;
+using RomashkiContract.Exceptions;
+using RomashkiContract.Extensions;
+using RomashkiContract.StoragesContracts;
+using RomashkiContracts.DataModels;
+using RomashkiContracts.Enums;
+using RomashkiContracts.Exceptions;
+using RomashkiContracts.Extensions;
+
+namespace RomashkiBusinessLogic.Implementations;
+
+internal class SaleBusinessLogicContract(ISaleStorageContract
+saleStorageContract, ILogger logger) : ISaleBusinessLogicContract
+{
+    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> GetAllSalesByBuyerByPeriod(string buyerId,
+    DateTime fromDate, DateTime toDate)
+    {
+        _logger.LogInformation("GetAllSales params: {buyerId}, {fromDate}, { toDate}",
+            buyerId, fromDate, toDate);
+    if (fromDate.IsDateNotOlder(toDate))
+        {
+            throw new IncorrectDatesException(fromDate, toDate);
+        }
+        if (buyerId.IsEmpty())
+        {
+            throw new ArgumentNullException(nameof(buyerId));
+        }
+        if (!buyerId.IsGuid())
+        {
+            throw new ValidationException("The value in the field buyerId is not a unique identifier.");
+        }
+        return _saleStorageContract.GetList(fromDate, toDate, buyerId: buyerId) ?? 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);
+    }
+
+
+
+
+
+   
+}
+

Romashki/RomashkiBusinessLogic/Implementations/WorkerBusinessLogicContract.cs

@@ -0,0 +1,116 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Text.Json;
+using System.Threading.Tasks;
+using Microsoft.Extensions.Logging;
+using RomashkiContract.BusinessLogicContracts;
+using RomashkiContract.Exceptions;
+using RomashkiContract.Extensions;
+using RomashkiContract.StoragesContracts;
+using RomashkiContracts.DataModels;
+using RomashkiContracts.Exceptions;
+using RomashkiContracts.Extensions;
+
+namespace RomashkiBusinessLogic.Implementations;
+
+internal class WorkerBusinessLogicContract(IWorkerStorageContract
+workerStorageContract, ILogger logger) : IWorkerBusinessLogicContract
+{
+    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);
+        }
+        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);
+    }
+
+
+
+
+
+}
+

Romashki/RomashkiBusinessLogic/RomashkiBusinessLogic.csproj

@@ -0,0 +1,22 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+	<PropertyGroup>
+		<TargetFramework>net9.0</TargetFramework>
+		<ImplicitUsings>enable</ImplicitUsings>
+		<Nullable>enable</Nullable>
+	</PropertyGroup>
+
+	<ItemGroup>
+		<PackageReference Include="Microsoft.Extensions.Logging" Version="9.0.2" />
+	</ItemGroup>
+
+	<ItemGroup>
+		<InternalsVisibleTo Include="RomashkiTests" />
+		<InternalsVisibleTo Include="DynamicProxyGenAssembly2" />
+	</ItemGroup>
+
+	<ItemGroup>
+		<ProjectReference Include="..\RomashkiContract\RomashkiContract.csproj" />
+	</ItemGroup>
+
+</Project>

Romashki/RomashkiContract/BusinessLogicContracts/IBuyerBusinessLogicContract.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using RomashkiContracts.DataModels;
+
+namespace RomashkiContract.BusinessLogicContracts;
+
+public interface IBuyerBusinessLogicContract
+{
+    List<BuyerDataModel> GetAllBuyers();
+    BuyerDataModel GetBuyerByData(string data);
+    void InsertBuyer(BuyerDataModel buyerDataModel);
+    void UpdateBuyer(BuyerDataModel buyerDataModel);
+    void DeleteBuyer(string id);
+}

Romashki/RomashkiContract/BusinessLogicContracts/IDiscountBusinessLogicContract.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using RomashkiContract.DataModels;
+
+namespace RomashkiContract.BusinessLogicContracts;
+
+public interface IDiscountBusinessLogicContract
+{
+    List<DiscountDataModel> GetAllDiscountsByPeriod(DateTime fromDate, DateTime toDate);
+
+    List<DiscountDataModel> GetAllDiscountsByPeriodByBuyer(DateTime fromDate, DateTime toDate, string buyerId);
+    void CalculateDiscountsByMounth(DateTime date);
+}

Romashki/RomashkiContract/BusinessLogicContracts/IPostBusinessLogicContract.cs

@@ -0,0 +1,19 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using RomashkiContracts.DataModels;
+
+namespace RomashkiContract.BusinessLogicContracts;
+
+public interface IPostBusinessLogicContract
+{
+    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);
+}

Romashki/RomashkiContract/BusinessLogicContracts/IProductBusinessLogicContract.cs

@@ -0,0 +1,19 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using RomashkiContracts.DataModels;
+
+namespace RomashkiContract.BusinessLogicContracts;
+
+public interface IProductBusinessLogicContract
+{
+    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);
+}
+

Romashki/RomashkiContract/BusinessLogicContracts/ISaleBusinessLogicContract.cs

@@ -0,0 +1,19 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using RomashkiContracts.DataModels;
+
+namespace RomashkiContract.BusinessLogicContracts;
+
+public interface ISaleBusinessLogicContract
+{
+    List<SaleDataModel> GetAllSalesByPeriod(DateTime fromDate, DateTime toDate);
+    List<SaleDataModel> GetAllSalesByWorkerByPeriod(string workerId, DateTime fromDate, DateTime toDate);
+    List<SaleDataModel> GetAllSalesByBuyerByPeriod(string buyerId, 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);
+}

Romashki/RomashkiContract/BusinessLogicContracts/IWorkerBusinessLogicContract.cs

@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using RomashkiContracts.DataModels;
+
+namespace RomashkiContract.BusinessLogicContracts;
+
+public interface IWorkerBusinessLogicContract
+{
+    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);
+}

Romashki/RomashkiContract/DataModels/PostDataModel.cs

@@ -11,11 +11,11 @@ using RomashkiContracts.Exceptions;
 
 namespace RomashkiContracts.DataModels;
 
-public class PostDataModel(string id, string postId, string postName,
+public class PostDataModel(string id, string postName,
     PostType postType, bool isActual, DateTime changeDate) : IValidation
+
 {
     public string Id { get; private set; } = id;
-    public string PostId { get; private set; } = postId;
     public string PostName { get; private set; } = postName;
     public PostType PostType { get; private set; } = postType;
     public bool IsActual { get; private set; } = isActual;
@@ -26,10 +26,6 @@ public class PostDataModel(string id, string postId, string postName,
             throw new ValidationException("Field Id is empty");
         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");
         if (PostType == PostType.None)

Romashki/RomashkiContract/Exceptions/ElementExistsException.cs

@@ -0,0 +1,19 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace RomashkiContract.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;
+    }
+}

Romashki/RomashkiContract/Exceptions/ElementNotFoundException.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace RomashkiContract.Exceptions;
+
+public class ElementNotFoundException : Exception
+{
+    public string Value { get; private set; }
+    public ElementNotFoundException(string value) : base($"Element not found at value = {value}")
+    {
+        Value = value;
+    }
+}
+

Romashki/RomashkiContract/Exceptions/IncorrectDatesException.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using static System.Runtime.InteropServices.JavaScript.JSType;
+
+namespace RomashkiContract.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}") { }
+}

Romashki/RomashkiContract/Exceptions/NullListException.cs

@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace RomashkiContract.Exceptions;
+
+public class NullListException : Exception
+{
+    public NullListException() : base("The returned list is null") { }
+}
+

Romashki/RomashkiContract/Exceptions/StorageException.cs

@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace RomashkiContract.Exceptions;
+
+public class StorageException : Exception
+{
+    public StorageException(Exception ex) : base($"Error while working in storage: { ex.Message}", ex) { }
+}
+

Romashki/RomashkiContract/Extensions/DateTimeExtensions.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace RomashkiContract.Extensions;
+
+public static class DateTimeExtensions
+{
+    public static bool IsDateNotOlder(this DateTime date, DateTime olderDate)
+    {
+        return date >= olderDate;
+    }
+}

Romashki/RomashkiContract/StoragesContracts/IBuyerStorageContract.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using RomashkiContracts.DataModels;
+
+namespace RomashkiContract.StoragesContracts;
+
+public interface IBuyerStorageContract
+{
+    List<BuyerDataModel> GetList();
+    BuyerDataModel? GetElementById(string id);
+    BuyerDataModel? GetElementByEmail(string email);
+    BuyerDataModel? GetElementByFIO(string fio);
+    void AddElement(BuyerDataModel buyerDataModel);
+    void UpdElement(BuyerDataModel buyerDataModel);
+    void DelElement(string id);
+}
+

Romashki/RomashkiContract/StoragesContracts/IDiscountStorageContract.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using RomashkiContract.DataModels;
+
+namespace RomashkiContract.StoragesContracts;
+
+public interface IDiscountStorageContract
+{
+    List<DiscountDataModel> GetList(DateTime startDate, DateTime endDate, string? buyerId = null);
+    void AddElement(DiscountDataModel discountDataModel);
+}
+

Romashki/RomashkiContract/StoragesContracts/IPostStorageContract.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using RomashkiContracts.DataModels;
+
+namespace RomashkiContract.StoragesContracts;
+
+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);
+}

Romashki/RomashkiContract/StoragesContracts/IProductStorageContract.cs

@@ -0,0 +1,19 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using RomashkiContracts.DataModels;
+
+namespace RomashkiContract.StoragesContracts;
+
+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);
+}

Romashki/RomashkiContract/StoragesContracts/ISaleStorageContract.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using RomashkiContracts.DataModels;
+
+namespace RomashkiContract.StoragesContracts;
+
+public interface ISaleStorageContract
+{
+    List<SaleDataModel> GetList(DateTime? startDate = null, DateTime? endDate =
+    null, string? workerId = null, string? buyerId = null, string? productId = null);
+    SaleDataModel? GetElementById(string id);
+    void AddElement(SaleDataModel saleDataModel);
+    void DelElement(string id);
+}

Romashki/RomashkiContract/StoragesContracts/IWorkerStorageContract.cs

@@ -0,0 +1,21 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using RomashkiContracts.DataModels;
+
+namespace RomashkiContract.StoragesContracts;
+
+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);
+    void AddElement(WorkerDataModel workerDataModel);
+    void UpdElement(WorkerDataModel workerDataModel);
+    void DelElement(string id);
+}
+

Romashki/RomashkiTests/BusinessLogicsContractsTests/BuyerBusinessLogicContractTests.cs

@@ -0,0 +1,372 @@
+using Moq;
+using RomashkiBusinessLogic.Implementations;
+using RomashkiContract.StoragesContracts;
+using RomashkiContracts.DataModels;
+using Microsoft.Extensions.Logging;
+using RomashkiContract.Exceptions;
+using RomashkiContracts.Exceptions;
+
+
+namespace RomashkiTests.BusinessLogicsContractsTests;
+
+[TestFixture]
+internal class BuyerBusinessLogicContractTests
+{
+    private BuyerBusinessLogicContract _buyerBusinessLogicContract;
+    private Mock<IBuyerStorageContract> _buyerStorageContract;
+    [OneTimeSetUp]
+    public void OneTimeSetUp()
+    {
+        _buyerStorageContract = new Mock<IBuyerStorageContract>();
+        _buyerBusinessLogicContract = new BuyerBusinessLogicContract(_buyerStorageContract.Object,
+            new Mock<ILogger>().Object);
+    }
+    [SetUp]
+    public void SetUp()
+    {
+        _buyerStorageContract.Reset();
+    }
+    [Test]
+    public void GetAllBuyers_ReturnListOfRecords_Test()
+    {
+        //Arrange
+        var listOriginal = new List<BuyerDataModel>()
+{
+        new(Guid.NewGuid().ToString(), "fio 1", "email@1.qwe",0, 0),
+        new(Guid.NewGuid().ToString(), "fio 2", "email@2.qwe",10, 10),
+        new(Guid.NewGuid().ToString(), "fio 3", "email@3.qwe", 0, 10),};
+        _buyerStorageContract.Setup(x => x.GetList()).Returns(listOriginal);
+        //Act
+        var list = _buyerBusinessLogicContract.GetAllBuyers();
+        //Assert
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Is.EquivalentTo(listOriginal));
+    }
+    [Test]
+    public void GetAllBuyers_ReturnEmptyList_Test()
+    {
+        //Arrange
+        _buyerStorageContract.Setup(x => x.GetList()).Returns([]);
+        //Act
+        var list = _buyerBusinessLogicContract.GetAllBuyers();
+        //Assert
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(0));
+        _buyerStorageContract.Verify(x => x.GetList(), Times.Once);
+    }
+    [Test]
+    public void GetAllBuyers_ReturnNull_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _buyerBusinessLogicContract.GetAllBuyers(), Throws.TypeOf<NullListException>());
+        _buyerStorageContract.Verify(x => x.GetList(), Times.Once);
+    }
+    [Test]
+    public void GetAllBuyers_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _buyerStorageContract.Setup(x => x.GetList()).Throws(new
+        StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _buyerBusinessLogicContract.GetAllBuyers(),
+        Throws.TypeOf<StorageException>());
+        _buyerStorageContract.Verify(x => x.GetList(), Times.Once);
+    }
+    [Test]
+    public void GetBuyerByData_GetById_ReturnRecord_Test()
+    {
+        //Arrange
+        var id = Guid.NewGuid().ToString();
+        var record = new BuyerDataModel(id, "fio", "email@1.qwe", 0, 0);
+        _buyerStorageContract.Setup(x => x.GetElementById(id)).Returns(record);
+        //Act
+        var element = _buyerBusinessLogicContract.GetBuyerByData(id);
+        //Assert
+        Assert.That(element, Is.Not.Null);
+        Assert.That(element.Id, Is.EqualTo(id));
+        _buyerStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Once);
+    }
+    [Test]
+    public void GetBuyerByData_GetByFio_ReturnRecord_Test()
+    {
+        //Arrange
+        var fio = "fio";
+        var record = new BuyerDataModel(Guid.NewGuid().ToString(), fio, "email@1.qwe", 0, 0);
+        _buyerStorageContract.Setup(x => x.GetElementByFIO(fio)).Returns(record);
+        //Act
+        var element = _buyerBusinessLogicContract.GetBuyerByData(fio);
+        //Assert
+        Assert.That(element, Is.Not.Null);
+        Assert.That(element.FIO, Is.EqualTo(fio));
+        _buyerStorageContract.Verify(x => x.GetElementByFIO(It.IsAny<string>()), Times.Once);
+    }
+    [Test]
+    public void GetBuyerByData_GetByEmail_ReturnRecord_Test()
+    {
+        //Arrange
+        var email = "email@1.qwe";
+        var record = new BuyerDataModel(Guid.NewGuid().ToString(), "fio", email, 0, 0);
+        _buyerStorageContract.Setup(x => x.GetElementByEmail(email)).Returns(record);
+        //Act
+        var element =
+        _buyerBusinessLogicContract.GetBuyerByData(email);
+        //Assert
+        Assert.That(element, Is.Not.Null);
+        Assert.That(element.Email, Is.EqualTo(email));
+        _buyerStorageContract.Verify(x => x.GetElementByEmail(It.IsAny<string>()), Times.Once);
+    }
+    [Test]
+    public void GetBuyerByData_EmptyData_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _buyerBusinessLogicContract.GetBuyerByData(null),
+        Throws.TypeOf<ArgumentNullException>());
+        Assert.That(() => _buyerBusinessLogicContract.GetBuyerByData(string.Empty),
+        Throws.TypeOf<ArgumentNullException>());
+
+        _buyerStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Never);
+        _buyerStorageContract.Verify(x => x.GetElementByEmail(It.IsAny<string>()), Times.Never);
+        _buyerStorageContract.Verify(x => x.GetElementByFIO(It.IsAny<string>()), Times.Never);
+    }
+    [Test]
+    public void GetBuyerByData_GetById_NotFoundRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() =>
+        _buyerBusinessLogicContract.GetBuyerByData(Guid.NewGuid().ToString()),
+        Throws.TypeOf<ElementNotFoundException>());
+        _buyerStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Once);
+        _buyerStorageContract.Verify(x => x.GetElementByEmail(It.IsAny<string>()), Times.Never);
+        _buyerStorageContract.Verify(x => x.GetElementByFIO(It.IsAny<string>()), Times.Never);
+    }
+    [Test]
+    public void GetBuyerByData_GetByFio_NotFoundRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _buyerBusinessLogicContract.GetBuyerByData("fio"),
+        Throws.TypeOf<ElementNotFoundException>());
+        _buyerStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Never);
+        _buyerStorageContract.Verify(x => x.GetElementByFIO(It.IsAny<string>()), Times.Once);
+        _buyerStorageContract.Verify(x => x.GetElementByEmail(It.IsAny<string>()), Times.Never);
+    }
+    [Test]
+    public void
+    GetBuyerByData_GetByEmail_NotFoundRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _buyerBusinessLogicContract.GetBuyerByData("email1@asd.casd"), Throws.TypeOf<ElementNotFoundException>());
+        _buyerStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Never);
+        _buyerStorageContract.Verify(x => x.GetElementByFIO(It.IsAny<string>()), Times.Never);
+        _buyerStorageContract.Verify(x => x.GetElementByEmail(It.IsAny<string>()), Times.Once);
+    }
+    [Test]
+    public void GetBuyerByData_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _buyerStorageContract.Setup(x => x.GetElementById(It.IsAny<string>()))
+            .Throws(new StorageException(new InvalidOperationException()));
+
+        _buyerStorageContract.Setup(x => x.GetElementByFIO(It.IsAny<string>()))
+            .Throws(new StorageException(new InvalidOperationException()));
+
+        _buyerStorageContract.Setup(x => x.GetElementByEmail(It.IsAny<string>())).
+            Throws(new StorageException(new InvalidOperationException()));
+
+        //Act&Assert
+        Assert.That(() => _buyerBusinessLogicContract.GetBuyerByData(Guid.NewGuid().ToString()),
+            Throws.TypeOf<StorageException>());
+
+        Assert.That(() => _buyerBusinessLogicContract.GetBuyerByData("fio"),
+        Throws.TypeOf<StorageException>());
+
+        Assert.That(() => _buyerBusinessLogicContract.GetBuyerByData("email@1.com"), Throws.TypeOf<StorageException>());
+        _buyerStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Once);
+        _buyerStorageContract.Verify(x => x.GetElementByFIO(It.IsAny<string>()), Times.Once);
+        _buyerStorageContract.Verify(x => x.GetElementByEmail(It.IsAny<string>()), Times.Once);
+    }
+    [Test]
+    public void InsertBuyer_CorrectRecord_Test()
+    {
+        //Arrange
+        var flag = false;
+        var record = new BuyerDataModel(Guid.NewGuid().ToString(), "fio", "email1@asd.com", 10, 10);
+        _buyerStorageContract.Setup(x => x.AddElement(It.IsAny<BuyerDataModel>()))
+        .Callback((BuyerDataModel x) =>
+        {
+            flag = x.Id == record.Id && x.FIO == record.FIO &&
+    x.Email == record.Email && x.DiscountSize == record.DiscountSize;
+        });
+        //Act
+        _buyerBusinessLogicContract.InsertBuyer(record);
+        //Assert
+        _buyerStorageContract.Verify(x => x.AddElement(It.IsAny<BuyerDataModel>()), Times.Once);
+        Assert.That(flag);
+    }
+    [Test]
+    public void InsertBuyer_RecordWithExistsData_ThrowException_Test()
+    {
+        //Arrange
+        _buyerStorageContract.Setup(x => x.AddElement(It.IsAny<BuyerDataModel>()))
+                .Throws(new ElementExistsException("Data", "Data"));
+        //Act&Assert
+        Assert.That(() => _buyerBusinessLogicContract.InsertBuyer(new(Guid.NewGuid().ToString(), "fio",
+        "email1@asd.com", 0, 0)), Throws.TypeOf<ElementExistsException>());
+
+        _buyerStorageContract.Verify(x => x.AddElement(It.IsAny<BuyerDataModel>()), Times.Once);
+    }
+    [Test]
+    public void InsertBuyer_NullRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _buyerBusinessLogicContract.InsertBuyer(null), Throws.TypeOf<ArgumentNullException>());
+        _buyerStorageContract.Verify(x => x.AddElement(It.IsAny<BuyerDataModel>()), Times.Never);
+    }
+    [Test]
+    public void InsertBuyer_InvalidRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _buyerBusinessLogicContract.InsertBuyer(new BuyerDataModel("id", "fio", "email1@asd.com", 0, 10)),
+        Throws.TypeOf<ValidationException>());
+        _buyerStorageContract.Verify(x =>
+        x.AddElement(It.IsAny<BuyerDataModel>()), Times.Never);
+    }
+    [Test]
+    public void InsertBuyer_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _buyerStorageContract.Setup(x =>
+        x.AddElement(It.IsAny<BuyerDataModel>())).Throws(new StorageException(new
+        InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _buyerBusinessLogicContract.InsertBuyer(new(Guid.NewGuid().ToString(), "fio",
+        "email1@asd.com", 0, 0)), Throws.TypeOf<StorageException>());
+
+        _buyerStorageContract.Verify(x => x.AddElement(It.IsAny<BuyerDataModel>()), Times.Once);
+    }
+    [Test]
+    public void UpdateBuyer_CorrectRecord_Test()
+    {
+        //Arrange
+        var flag = false;
+        var record = new BuyerDataModel(Guid.NewGuid().ToString(), "fio", "email1@asd.com", 0, 0);
+        _buyerStorageContract.Setup(x => x.UpdElement(It.IsAny<BuyerDataModel>()))
+        .Callback((BuyerDataModel x) =>
+        {
+            flag = x.Id == record.Id && x.FIO == record.FIO &&
+            x.Email == record.Email &&
+            x.DiscountSize == record.DiscountSize;
+        });
+        //Act
+        _buyerBusinessLogicContract.UpdateBuyer(record);
+
+        //Assert
+        _buyerStorageContract.Verify(x => x.UpdElement(It.IsAny<BuyerDataModel>()), Times.Once);
+        Assert.That(flag);
+    }
+    [Test]
+    public void UpdateBuyer_RecordWithIncorrectData_ThrowException_Test()
+    {
+        //Arrange
+        _buyerStorageContract.Setup(x =>
+        x.UpdElement(It.IsAny<BuyerDataModel>())).Throws(new
+        ElementNotFoundException(""));
+        //Act&Assert
+        Assert.That(() =>
+        _buyerBusinessLogicContract.UpdateBuyer(new(Guid.NewGuid().ToString(), "fio",
+        "email1@asd.com", 0, 0)), Throws.TypeOf<ElementNotFoundException>());
+        _buyerStorageContract.Verify(x => x.UpdElement(It.IsAny<BuyerDataModel>()), Times.Once);
+    }
+    [Test]
+    public void UpdateBuyer_RecordWithExistsData_ThrowException_Test()
+    {
+        //Arrange
+        _buyerStorageContract.Setup(x => x.UpdElement(It.IsAny<BuyerDataModel>()))
+            .Throws(new ElementExistsException("Data", "Data"));
+
+        //Act&Assert
+        Assert.That(() => _buyerBusinessLogicContract.UpdateBuyer(new(Guid.NewGuid().ToString(), "fio",
+        "email1@asd.com", 0, 0)), Throws.TypeOf<ElementExistsException>());
+
+        _buyerStorageContract.Verify(x => x.UpdElement(It.IsAny<BuyerDataModel>()), Times.Once);
+    }
+    [Test]
+    public void UpdateBuyer_NullRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _buyerBusinessLogicContract.UpdateBuyer(null), Throws.TypeOf<ArgumentNullException>());
+        _buyerStorageContract.Verify(x => x.UpdElement(It.IsAny<BuyerDataModel>()), Times.Never);
+    }
+    [Test]
+    public void UpdateBuyer_InvalidRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _buyerBusinessLogicContract.UpdateBuyer(new
+        BuyerDataModel("id", "fio", "email1@asd.com", 0, 10)),
+        Throws.TypeOf<ValidationException>());
+        _buyerStorageContract.Verify(x => x.UpdElement(It.IsAny<BuyerDataModel>()), Times.Never);
+    }
+    [Test]
+    public void UpdateBuyer_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _buyerStorageContract.Setup(x => x.UpdElement(It.IsAny<BuyerDataModel>()))
+            .Throws(new StorageException(new InvalidOperationException()));
+
+        //Act&Assert
+        Assert.That(() =>
+        _buyerBusinessLogicContract.UpdateBuyer(new(Guid.NewGuid().ToString(), "fio",
+        "email1@asd.com", 0, 0)), Throws.TypeOf<StorageException>());
+
+        _buyerStorageContract.Verify(x => x.UpdElement(It.IsAny<BuyerDataModel>()), Times.Once);
+    }
+    [Test]
+    public void DeleteBuyer_CorrectRecord_Test()
+    {
+        //Arrange
+        var id = Guid.NewGuid().ToString();
+        var flag = false;
+        _buyerStorageContract.Setup(x => x.DelElement(It.Is((string x) => x == id))).Callback(() => { flag = true; });
+        //Act
+        _buyerBusinessLogicContract.DeleteBuyer(id);
+        //Assert
+        _buyerStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Once);
+        Assert.That(flag);
+    }
+    [Test]
+    public void DeleteBuyer_RecordWithIncorrectId_ThrowException_Test()
+    {
+        //Arrange 
+        _buyerStorageContract.Setup(x => x.DelElement(It.IsAny<string>())).Throws(new ElementNotFoundException(""));
+        //Act&Assert
+        Assert.That(() => _buyerBusinessLogicContract.DeleteBuyer(Guid.NewGuid().ToString()),
+        Throws.TypeOf<ElementNotFoundException>());
+
+        _buyerStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Once);
+    }
+    [Test]
+    public void DeleteBuyer_IdIsNullOrEmpty_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _buyerBusinessLogicContract.DeleteBuyer(null), Throws.TypeOf<ArgumentNullException>());
+        Assert.That(() => _buyerBusinessLogicContract.DeleteBuyer(string.Empty),
+        Throws.TypeOf<ArgumentNullException>());
+        _buyerStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Never);
+    }
+    [Test]
+    public void DeleteBuyer_IdIsNotGuid_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _buyerBusinessLogicContract.DeleteBuyer("id"), Throws.TypeOf<ValidationException>());
+        _buyerStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Never);
+    }
+    [Test]
+    public void DeleteBuyer_StorageThrowError_ThrowException_Test()
+    {
+
+        //Arrange
+        _buyerStorageContract.Setup(x => x.DelElement(It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _buyerBusinessLogicContract.DeleteBuyer(Guid.NewGuid().ToString()), Throws.TypeOf<StorageException>());
+        _buyerStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Once);
+    }
+}

Romashki/RomashkiTests/BusinessLogicsContractsTests/DiscountBusinessLogicContractTests.cs

@@ -0,0 +1,385 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Microsoft.Extensions.Logging;
+using Moq;
+using NUnit.Framework.Legacy;
+using RomashkiBusinessLogic.Implementations;
+using RomashkiContract.DataModels;
+using RomashkiContract.Exceptions;
+using RomashkiContract.StoragesContracts;
+using RomashkiContracts.DataModels;
+using RomashkiContracts.Enums;
+using RomashkiContracts.Exceptions;
+
+namespace RomashkiTests.BusinessLogicsContractsTests;
+
+[TestFixture]
+internal class DiscountBusinessLogicContractTests
+{
+    private DiscountBusinessLogicContract _discountBusinessLogicContract;
+    private Mock<IDiscountStorageContract> _discountStorageContract;
+    private Mock<ISaleStorageContract> _saleStorageContract;
+    private Mock<IPostStorageContract> _postStorageContract;
+    private Mock<IBuyerStorageContract> _buyerStorageContract;
+    [OneTimeSetUp]
+    public void OneTimeSetUp()
+    {
+        _discountStorageContract = new Mock<IDiscountStorageContract>();
+        _saleStorageContract = new Mock<ISaleStorageContract>();
+        _postStorageContract = new Mock<IPostStorageContract>();
+        _buyerStorageContract = new Mock<IBuyerStorageContract>();
+        _discountBusinessLogicContract = new
+        DiscountBusinessLogicContract(_discountStorageContract.Object,
+        _saleStorageContract.Object, _postStorageContract.Object,
+        _buyerStorageContract.Object, new Mock<ILogger>().Object);
+    }
+    [SetUp]
+    public void SetUp()
+    {
+        _discountStorageContract.Reset();
+        _saleStorageContract.Reset();
+        _postStorageContract.Reset();
+        _buyerStorageContract.Reset();
+    }
+    [Test]
+    public void GetAllDiscounts_ReturnListOfRecords_Test()
+    {
+        //Arrange
+        var startDate = DateTime.UtcNow;
+        var endDate = DateTime.UtcNow.AddDays(1);
+        var listOriginal = new List<DiscountDataModel>()
+{
+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),
+};
+        _discountStorageContract.Setup(x => x.GetList(It.IsAny<DateTime>(),
+        It.IsAny<DateTime>(), It.IsAny<string>())).Returns(listOriginal);
+        //Act
+        var list =
+        _discountBusinessLogicContract.GetAllDiscountsByPeriod(startDate, endDate);
+        //Assert
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Is.EquivalentTo(listOriginal));
+        _discountStorageContract.Verify(x => x.GetList(startDate, endDate,
+        null), Times.Once);
+    }
+    [Test]
+
+    public void GetAllDiscounts_ReturnEmptyList_Test()
+    {
+        //Arrange
+        _discountStorageContract.Setup(x => x.GetList(It.IsAny<DateTime>(),
+        It.IsAny<DateTime>(), It.IsAny<string>())).Returns([]);
+        //Act
+        var list =
+        _discountBusinessLogicContract.GetAllDiscountsByPeriod(DateTime.UtcNow,
+        DateTime.UtcNow.AddDays(1));
+        //Assert
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(0));
+        _discountStorageContract.Verify(x => x.GetList(It.IsAny<DateTime>(),
+        It.IsAny<DateTime>(), It.IsAny<string>()), Times.Once);
+    }
+    [Test]
+    public void GetAllDiscounts_IncorrectDates_ThrowException_Test()
+    {
+        //Arrange
+        var dateTime = DateTime.UtcNow;
+        //Act&Assert
+        Assert.That(() =>
+        _discountBusinessLogicContract.GetAllDiscountsByPeriod(dateTime, dateTime),
+        Throws.TypeOf<IncorrectDatesException>());
+        Assert.That(() =>
+        _discountBusinessLogicContract.GetAllDiscountsByPeriod(dateTime,
+        dateTime.AddSeconds(-1)), Throws.TypeOf<IncorrectDatesException>());
+        _discountStorageContract.Verify(x => x.GetList(It.IsAny<DateTime>(),
+        It.IsAny<DateTime>(), It.IsAny<string>()), Times.Never);
+    }
+    [Test]
+    public void GetAllDiscounts_ReturnNull_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() =>
+        _discountBusinessLogicContract.GetAllDiscountsByPeriod(DateTime.UtcNow,
+        DateTime.UtcNow.AddDays(1)), Throws.TypeOf<NullListException>());
+        _discountStorageContract.Verify(x => x.GetList(It.IsAny<DateTime>(),
+        It.IsAny<DateTime>(), It.IsAny<string>()), Times.Once);
+    }
+    [Test]
+    public void GetAllDiscounts_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _discountStorageContract.Setup(x => x.GetList(It.IsAny<DateTime>(),
+        It.IsAny<DateTime>(), It.IsAny<string>())).Throws(new StorageException(new
+        InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() =>
+        _discountBusinessLogicContract.GetAllDiscountsByPeriod(DateTime.UtcNow,
+        DateTime.UtcNow.AddDays(1)), Throws.TypeOf<StorageException>());
+        _discountStorageContract.Verify(x => x.GetList(It.IsAny<DateTime>(),
+        It.IsAny<DateTime>(), It.IsAny<string>()), Times.Once);
+    }
+    [Test]
+    public void GetAllDiscountsByBuyer_ReturnListOfRecords_Test()
+    {
+        //Arrange
+        var startDate = DateTime.UtcNow;
+        var endDate = DateTime.UtcNow.AddDays(1);
+        var buyerId = Guid.NewGuid().ToString();
+        var listOriginal = new List<DiscountDataModel>()
+{
+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),
+};
+        _discountStorageContract.Setup(x => x.GetList(It.IsAny<DateTime>(),
+        It.IsAny<DateTime>(), It.IsAny<string>())).Returns(listOriginal);
+        //Act
+        var list =
+        _discountBusinessLogicContract.GetAllDiscountsByPeriodByBuyer(startDate, endDate,
+        buyerId);
+        //Assert
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Is.EquivalentTo(listOriginal));
+        _discountStorageContract.Verify(x => x.GetList(startDate, endDate,
+        buyerId), Times.Once);
+    }
+    [Test]
+    public void GetAllDiscountsByBuyer_ReturnEmptyList_Test()
+    {
+        //Arrange
+        _discountStorageContract.Setup(x => x.GetList(It.IsAny<DateTime>(),
+        It.IsAny<DateTime>(), It.IsAny<string>())).Returns([]);
+        //Act
+        var list =
+        _discountBusinessLogicContract.GetAllDiscountsByPeriodByBuyer(DateTime.UtcNow,
+        DateTime.UtcNow.AddDays(1), Guid.NewGuid().ToString());
+        //Assert
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(0));
+        _discountStorageContract.Verify(x => x.GetList(It.IsAny<DateTime>(),
+        It.IsAny<DateTime>(), It.IsAny<string>()), Times.Once);
+    }
+    [Test]
+    public void GetAllDiscountsByBuyer_IncorrectDates_ThrowException_Test()
+    {
+        //Arrange
+        var dateTime = DateTime.UtcNow;
+        //Act&Assert
+        Assert.That(() =>
+        _discountBusinessLogicContract.GetAllDiscountsByPeriodByBuyer(dateTime, dateTime,
+        Guid.NewGuid().ToString()), Throws.TypeOf<IncorrectDatesException>());
+        Assert.That(() =>
+        _discountBusinessLogicContract.GetAllDiscountsByPeriodByBuyer(dateTime,
+        dateTime.AddSeconds(-1), Guid.NewGuid().ToString()),
+        Throws.TypeOf<IncorrectDatesException>());
+        _discountStorageContract.Verify(x => x.GetList(It.IsAny<DateTime>(),
+        It.IsAny<DateTime>(), It.IsAny<string>()), Times.Never);
+    }
+    [Test]
+    public void GetAllDiscountsByBuyer_BuyerIdIsNUllOrEmpty_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() =>
+        _discountBusinessLogicContract.GetAllDiscountsByPeriodByBuyer(DateTime.UtcNow,
+        DateTime.UtcNow.AddDays(1), null), Throws.TypeOf<ArgumentNullException>());
+
+        Assert.That(() =>
+        _discountBusinessLogicContract.GetAllDiscountsByPeriodByBuyer(DateTime.UtcNow,
+        DateTime.UtcNow.AddDays(1), string.Empty),
+        Throws.TypeOf<ArgumentNullException>());
+        _discountStorageContract.Verify(x => x.GetList(It.IsAny<DateTime>(),
+        It.IsAny<DateTime>(), It.IsAny<string>()), Times.Never);
+    }
+    [Test]
+    public void GetAllDiscountsByBuyer_BuyerIdIsNotGuid_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() =>
+        _discountBusinessLogicContract.GetAllDiscountsByPeriodByBuyer(DateTime.UtcNow,
+        DateTime.UtcNow.AddDays(1), "buyerId"), Throws.TypeOf<ValidationException>());
+        _discountStorageContract.Verify(x => x.GetList(It.IsAny<DateTime>(),
+        It.IsAny<DateTime>(), It.IsAny<string>()), Times.Never);
+    }
+    [Test]
+    public void GetAllDiscountsByBuyer_ReturnNull_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() =>
+        _discountBusinessLogicContract.GetAllDiscountsByPeriodByBuyer(DateTime.UtcNow,
+        DateTime.UtcNow.AddDays(1), Guid.NewGuid().ToString()),
+        Throws.TypeOf<NullListException>());
+        _discountStorageContract.Verify(x => x.GetList(It.IsAny<DateTime>(),
+        It.IsAny<DateTime>(), It.IsAny<string>()), Times.Once);
+    }
+    [Test]
+    public void GetAllDiscountsByBuyer_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _discountStorageContract.Setup(x => x.GetList(It.IsAny<DateTime>(),
+        It.IsAny<DateTime>(), It.IsAny<string>())).Throws(new StorageException(new
+        InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() =>
+        _discountBusinessLogicContract.GetAllDiscountsByPeriodByBuyer(DateTime.UtcNow,
+        DateTime.UtcNow.AddDays(1), Guid.NewGuid().ToString()),
+        Throws.TypeOf<StorageException>());
+        _discountStorageContract.Verify(x => x.GetList(It.IsAny<DateTime>(),
+        It.IsAny<DateTime>(), It.IsAny<string>()), Times.Once);
+    }
+    [Test]
+    public void CalculateDiscountForBuyer_CalculateDiscount_Test()
+    {
+        // Arrange
+        var buyerId = Guid.NewGuid().ToString();
+        var totalSpend = 1000;
+        var expectedDiscountSize = 1.0;
+
+        var buyerDataModel = new BuyerDataModel(buyerId, "test", "ivanov@example.com", totalSpend, 0);
+        _buyerStorageContract
+     .Setup(x => x.GetList()) 
+     .Returns(new List<BuyerDataModel> { buyerDataModel }); 
+
+        _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(),Guid.NewGuid().ToString(),
+buyerId, DiscountType.None, false, [new SaleProductDataModel(Guid.NewGuid().ToString(),
+Guid.NewGuid().ToString(), 1, totalSpend)])]);
+
+
+        _discountStorageContract.Setup(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>()))
+            .Returns(new List<DiscountDataModel>());
+
+        double actualDiscountSize = 0;
+        _discountStorageContract.Setup(x => x.AddElement(It.IsAny<DiscountDataModel>()))
+            .Callback((DiscountDataModel discount) =>
+            {
+                actualDiscountSize = discount.DiscountSize;
+            });
+
+        // Act
+        _discountBusinessLogicContract.CalculateDiscountsByMounth(DateTime.Now);
+
+        // Assert
+        Assert.That(actualDiscountSize, Is.EqualTo(expectedDiscountSize));
+    }
+    [Test]
+    public void CalculateDiscountByMounth_WithSeveralBuyers_Test()
+    {
+        var buyer1Id = Guid.NewGuid().ToString();
+        var buyer2Id = Guid.NewGuid().ToString();
+        var buyer3Id = Guid.NewGuid().ToString();
+        // Arrange
+        var buyers = new List<BuyerDataModel>
+    {
+        new BuyerDataModel(buyer1Id, "test1", "ivanov1@example.com", 1000, 0),
+        new BuyerDataModel(buyer2Id, "test2", "ivanov2@example.com", 2000, 0),
+        new BuyerDataModel(buyer3Id, "test3", "ivanov3@example.com", 3000, 0)
+    };
+
+        var expectedDiscountSizes = new List<double> { 1.0, 2.0, 3.0 };
+
+        _buyerStorageContract.Setup(x => x.GetList())
+            .Returns(buyers);
+
+
+        _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(),Guid.NewGuid().ToString(),
+buyer1Id, DiscountType.None, false, [new SaleProductDataModel(Guid.NewGuid().ToString(),
+Guid.NewGuid().ToString(), 1, 1000)]),
+new SaleDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(),
+buyer2Id, DiscountType.None, false, [new SaleProductDataModel(Guid.NewGuid().ToString(),
+Guid.NewGuid().ToString(), 1, 2000)]),
+new SaleDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(),
+buyer3Id, DiscountType.None, false, [new SaleProductDataModel(Guid.NewGuid().ToString(),
+Guid.NewGuid().ToString(), 1, 3000)])]);
+
+
+        _discountStorageContract.Setup(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>()))
+            .Returns(new List<DiscountDataModel>());
+
+        var actualDiscountSizes = new List<double>();
+        _discountStorageContract.Setup(x => x.AddElement(It.IsAny<DiscountDataModel>()))
+            .Callback((DiscountDataModel discount) =>
+            {
+                actualDiscountSizes.Add(discount.DiscountSize);
+            });
+
+        // Act
+        _discountBusinessLogicContract.CalculateDiscountsByMounth(DateTime.Now);
+
+        // Assert
+        CollectionAssert.AreEqual(expectedDiscountSizes, actualDiscountSizes);
+    }
+
+
+    [Test]
+    public void CalculateDiscountByMounth_BuyerStorageReturnNull_ThrowException_Test()
+    {
+        // Arrange
+        _buyerStorageContract.Setup(x => x.GetList())
+            .Returns((List<BuyerDataModel>)null);
+
+        // Act & Assert
+        Assert.That(() =>
+            _discountBusinessLogicContract.CalculateDiscountsByMounth(DateTime.Now),
+            Throws.TypeOf<NullListException>());
+    }
+    [Test]
+    public void CalculateDiscountByMounth_SaleStorageThrowException_ThrowException_Test()
+    {
+        // Arrange
+        var buyerId = Guid.NewGuid().ToString();
+        var totalSpend = 1000;
+
+        var buyerDataModel = new BuyerDataModel(buyerId, "test", "ivanov@example.com", totalSpend, 0);
+        _buyerStorageContract.Setup(x => x.GetList())
+            .Returns(new List<BuyerDataModel> { buyerDataModel });
+
+        _saleStorageContract.Setup(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(),
+                It.IsAny<string>(), It.IsAny<string>())).Throws(new InvalidOperationException("Sale storage failed."));
+
+        // Act & Assert
+        var exception = Assert.Throws<StorageException>(() =>
+            _discountBusinessLogicContract.CalculateDiscountsByMounth(DateTime.Now));
+        Assert.That(exception.Message, Is.EqualTo("Error while working in storage: Sale storage failed."));
+
+        _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 CalculateDiscountByMounth_BuyerStorageThrowException_ThrowException_Test()
+    {
+        // Arrange
+        var buyerId = Guid.NewGuid().ToString();
+
+
+        _buyerStorageContract.Setup(x => x.GetList())
+            .Throws(new InvalidOperationException("Buyer storage failed."));
+
+        // Act & Assert
+        Assert.That(() =>
+            _discountBusinessLogicContract.CalculateDiscountsByMounth(DateTime.Now),
+            Throws.TypeOf<StorageException>()
+                .With.InnerException.TypeOf<InvalidOperationException>()
+                .And.InnerException.Message.EqualTo("Buyer storage failed."));
+
+
+        _buyerStorageContract.Verify(x => x.GetList(), Times.Once);
+    }
+}
+

Romashki/RomashkiTests/BusinessLogicsContractsTests/PostBusinessLogicContractTests.cs

@@ -0,0 +1,478 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Microsoft.Extensions.Logging;
+using Moq;
+using RomashkiBusinessLogic.Implementations;
+using RomashkiContract.Exceptions;
+using RomashkiContract.StoragesContracts;
+using RomashkiContracts.DataModels;
+using RomashkiContracts.Enums;
+using RomashkiContracts.Exceptions;
+
+namespace RomashkiTests.BusinessLogicsContractsTests;
+
+[TestFixture]
+internal class PostBusinessLogicContractTests
+{
+    private PostBusinessLogicContract _postBusinessLogicContract;
+    private Mock<IPostStorageContract> _postStorageContract;
+    [OneTimeSetUp]
+    public void OneTimeSetUp()
+    {
+        _postStorageContract = new Mock<IPostStorageContract>();
+        _postBusinessLogicContract = new PostBusinessLogicContract(_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.Assistant, true, DateTime.UtcNow),
+new(Guid.NewGuid().ToString(), "name 2", PostType.Assistant, false, DateTime.UtcNow),
+new(Guid.NewGuid().ToString(), "name 3", PostType.Assistant, true, DateTime.UtcNow),
+};
+        _postStorageContract.Setup(x =>
+        x.GetList(It.IsAny<bool>())).Returns(listOriginal);
+        //Act
+        var listOnlyActive = _postBusinessLogicContract.GetAllPosts(true);
+        var listAll = _postBusinessLogicContract.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 = _postBusinessLogicContract.GetAllPosts(true);
+        var listAll = _postBusinessLogicContract.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(() => _postBusinessLogicContract.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(() => _postBusinessLogicContract.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.Assistant, true, DateTime.UtcNow),
+new(postId, "name 2", PostType.Assistant, false, DateTime.UtcNow)
+};
+        _postStorageContract.Setup(x => x.GetPostWithHistory(It.IsAny<string>())).Returns(listOriginal);
+        //Act
+        var list = _postBusinessLogicContract.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 = _postBusinessLogicContract.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(() => _postBusinessLogicContract.GetAllDataOfPost(null), Throws.TypeOf<ArgumentNullException>());
+        Assert.That(() =>
+        _postBusinessLogicContract.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(() => _postBusinessLogicContract.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(() => _postBusinessLogicContract.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(() =>
+    _postBusinessLogicContract.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.Assistant, true, DateTime.UtcNow);
+        _postStorageContract.Setup(x => x.GetElementById(id)).Returns(record);
+        //Act
+        var element = _postBusinessLogicContract.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.Assistant, true, DateTime.UtcNow);
+        _postStorageContract.Setup(x => x.GetElementByName(postName)).Returns(record);
+        //Act
+        var element = _postBusinessLogicContract.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(() => _postBusinessLogicContract.GetPostByData(null), Throws.TypeOf<ArgumentNullException>());
+        Assert.That(() =>
+        _postBusinessLogicContract.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(() =>
+    _postBusinessLogicContract.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(() => _postBusinessLogicContract.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(() => _postBusinessLogicContract.GetPostByData(Guid.NewGuid().ToString()),
+        Throws.TypeOf<StorageException>());
+
+        Assert.That(() => _postBusinessLogicContract.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.Supervisor,
+            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.ChangeDate == record.ChangeDate;
+        });
+        //Act
+        _postBusinessLogicContract.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(() => _postBusinessLogicContract.InsertPost(new(Guid.NewGuid().ToString(), "name",
+        PostType.Supervisor, 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(() => _postBusinessLogicContract.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(() => _postBusinessLogicContract.InsertPost(new PostDataModel("id", "name",
+            PostType.Supervisor,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(() =>
+        _postBusinessLogicContract.InsertPost(new(Guid.NewGuid().ToString(), "name", PostType.Supervisor,
+        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.Supervisor, 
+            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.ChangeDate == record.ChangeDate;
+    });
+        //Act
+        _postBusinessLogicContract.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(() =>
+        _postBusinessLogicContract.UpdatePost(new(Guid.NewGuid().ToString(), "name",
+        PostType.Supervisor, 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(() =>
+        _postBusinessLogicContract.UpdatePost(new(Guid.NewGuid().ToString(), "anme", PostType.Supervisor, 
+            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(() => _postBusinessLogicContract.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(() => _postBusinessLogicContract.UpdatePost(new PostDataModel("id", "name", 
+            PostType.Supervisor, 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(() => _postBusinessLogicContract.UpdatePost(new(Guid.NewGuid().ToString(), "name",
+            PostType.Supervisor, 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
+        _postBusinessLogicContract.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(() => _postBusinessLogicContract.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(() => _postBusinessLogicContract.DeletePost(null), Throws.TypeOf<ArgumentNullException>());
+        Assert.That(() => _postBusinessLogicContract.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(() => _postBusinessLogicContract.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(() => _postBusinessLogicContract.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
+        _postBusinessLogicContract.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(() => _postBusinessLogicContract.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(() => _postBusinessLogicContract.RestorePost(null), Throws.TypeOf<ArgumentNullException>());
+
+    Assert.That(() => _postBusinessLogicContract.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(() => _postBusinessLogicContract.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(() => _postBusinessLogicContract.RestorePost(Guid.NewGuid().ToString()), Throws.TypeOf<StorageException>());
+        _postStorageContract.Verify(x => x.ResElement(It.IsAny<string>()), Times.Once);
+    }
+}

Romashki/RomashkiTests/BusinessLogicsContractsTests/ProductBusinessLogicContractTests.cs

@@ -0,0 +1,499 @@
+using Microsoft.Extensions.Logging;
+using Moq;
+using RomashkiBusinessLogic.Implementations;
+using RomashkiContract.Exceptions;
+using RomashkiContract.StoragesContracts;
+using RomashkiContracts.DataModels;
+using RomashkiContracts.Enums;
+using RomashkiContracts.Exceptions;
+
+namespace RomashkiTests.BusinessLogicsContractsTests;
+
+[TestFixture]
+internal class ProductBusinessLogicContractTests
+{
+    private ProductBusinessLogicContract _productBusinessLogicContract;
+    private Mock<IProductStorageContract> _productStorageContract;
+    [OneTimeSetUp]
+    public void OneTimeSetUp()
+    {
+        _productStorageContract = new Mock<IProductStorageContract>();
+        _productBusinessLogicContract = new
+        ProductBusinessLogicContract(_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.Accessory, 10, false),
+new(Guid.NewGuid().ToString(), "name 2", ProductType.Accessory, 10, true),
+new(Guid.NewGuid().ToString(), "name 3", ProductType.Accessory,  10, false),
+};
+        _productStorageContract.Setup(x => x.GetList(It.IsAny<bool>())).Returns(listOriginal);
+        //Act
+        var listOnlyActive = _productBusinessLogicContract.GetAllProducts(true);
+        var list = _productBusinessLogicContract.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(new List<ProductDataModel>());
+        //Act
+        var listOnlyActive = _productBusinessLogicContract.GetAllProducts(true);
+        var list = _productBusinessLogicContract.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(() => _productBusinessLogicContract.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(() => _productBusinessLogicContract.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 =
+        _productBusinessLogicContract.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 =
+        _productBusinessLogicContract.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(() =>
+        _productBusinessLogicContract.GetProductHistoryByProduct(null),
+        Throws.TypeOf<ArgumentNullException>());
+        Assert.That(() =>
+        _productBusinessLogicContract.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(() =>
+        _productBusinessLogicContract.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(() =>
+        _productBusinessLogicContract.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(() =>
+        _productBusinessLogicContract.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.Accessory, 10, false);
+        _productStorageContract.Setup(x =>
+        x.GetElementById(id)).Returns(record);
+        //Act
+        var element = _productBusinessLogicContract.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.Accessory, 10, false);
+     
+    _productStorageContract.Setup(x =>
+    x.GetElementByName(name)).Returns(record);
+        //Act
+        var element = _productBusinessLogicContract.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(() =>
+        _productBusinessLogicContract.GetProductByData(null),
+        Throws.TypeOf<ArgumentNullException>());
+        Assert.That(() =>
+        _productBusinessLogicContract.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(() =>
+        _productBusinessLogicContract.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(() =>
+        _productBusinessLogicContract.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(() =>
+        _productBusinessLogicContract.GetProductByData(Guid.NewGuid().ToString()),
+        Throws.TypeOf<StorageException>());
+      
+    Assert.That(() =>
+    _productBusinessLogicContract.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.Accessory, 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
+        _productBusinessLogicContract.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(() =>
+        _productBusinessLogicContract.InsertProduct(new(Guid.NewGuid().ToString(), 
+        "name", ProductType.Accessory, 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(() => _productBusinessLogicContract.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(() => _productBusinessLogicContract.InsertProduct(new
+    ProductDataModel("id", "name", ProductType.Accessory, 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(() =>
+        _productBusinessLogicContract.InsertProduct(new(Guid.NewGuid().ToString(),
+        "name", ProductType.Accessory, 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.Accessory, 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
+        _productBusinessLogicContract.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(() =>
+        _productBusinessLogicContract.UpdateProduct(new(Guid.NewGuid().ToString(),
+        "name", ProductType.Accessory, 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(() =>
+        _productBusinessLogicContract.UpdateProduct(new(Guid.NewGuid().ToString(),
+        "anme", ProductType.Accessory, 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(() => _productBusinessLogicContract.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(() => _productBusinessLogicContract.UpdateProduct(new
+        ProductDataModel("id", "name", ProductType.Accessory, 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(() =>
+        _productBusinessLogicContract.UpdateProduct(new(Guid.NewGuid().ToString(), 
+            "name", ProductType.Accessory, 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
+        _productBusinessLogicContract.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(() =>
+        _productBusinessLogicContract.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(() => _productBusinessLogicContract.DeleteProduct(null),
+        Throws.TypeOf<ArgumentNullException>());
+        Assert.That(() =>
+        _productBusinessLogicContract.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(() => _productBusinessLogicContract.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(() =>
+        _productBusinessLogicContract.DeleteProduct(Guid.NewGuid().ToString()),
+        Throws.TypeOf<StorageException>());
+        _productStorageContract.Verify(x => x.DelElement(It.IsAny<string>()),
+        Times.Once);
+    }
+}
+

Romashki/RomashkiTests/BusinessLogicsContractsTests/SaleBusinessLogicContractTests.cs

@@ -0,0 +1,718 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Microsoft.Extensions.Logging;
+using Moq;
+using NUnit.Framework.Internal;
+using RomashkiBusinessLogic.Implementations;
+using RomashkiContract.BusinessLogicContracts;
+using RomashkiContract.Exceptions;
+using RomashkiContract.StoragesContracts;
+using RomashkiContracts.DataModels;
+using RomashkiContracts.Enums;
+using RomashkiContracts.Exceptions;
+
+namespace RomashkiTests.BusinessLogicsContractsTests;
+
+[TestFixture]
+internal class SaleBusinessLogicContractTests
+{
+    private SaleBusinessLogicContract _saleBusinessLogicContract;
+    private Mock<ISaleStorageContract> _saleStorageContract;
+    [OneTimeSetUp]
+    public void OneTimeSetUp()
+    {
+        _saleStorageContract = new Mock<ISaleStorageContract>();
+        _saleBusinessLogicContract = new
+        SaleBusinessLogicContract(_saleStorageContract.Object, new Mock<Microsoft.Extensions.Logging.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, DiscountType.None, false,
+[new SaleProductDataModel(Guid.NewGuid().ToString(),
+Guid.NewGuid().ToString(), 5, 1.2)]),
+new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(),
+null, DiscountType.None, false, []),
+new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(),
+null, DiscountType.None, 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 = _saleBusinessLogicContract.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 =
+        _saleBusinessLogicContract.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(() =>
+        _saleBusinessLogicContract.GetAllSalesByPeriod(date, date),
+        Throws.TypeOf<IncorrectDatesException>());
+        Assert.That(() =>
+        _saleBusinessLogicContract.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(() =>
+        _saleBusinessLogicContract.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(() =>
+        _saleBusinessLogicContract.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, DiscountType.None, false,
+[new SaleProductDataModel(Guid.NewGuid().ToString(),
+Guid.NewGuid().ToString(), 5, 1.2)]),
+new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(),
+null, DiscountType.None, false, []),
+new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(),
+null, DiscountType.None, 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 =
+        _saleBusinessLogicContract.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 =
+        _saleBusinessLogicContract.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(() =>
+        _saleBusinessLogicContract.GetAllSalesByWorkerByPeriod(Guid.NewGuid().ToString(),
+        date, date), Throws.TypeOf<IncorrectDatesException>());
+        Assert.That(() =>
+        _saleBusinessLogicContract.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(() =>
+        _saleBusinessLogicContract.GetAllSalesByWorkerByPeriod(null, DateTime.UtcNow,
+        DateTime.UtcNow.AddDays(1)), Throws.TypeOf<ArgumentNullException>());
+        Assert.That(() =>
+        _saleBusinessLogicContract.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(() =>
+        _saleBusinessLogicContract.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(() =>
+        _saleBusinessLogicContract.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(() =>
+        _saleBusinessLogicContract.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 GetAllSalesByBuyerByPeriod_ReturnListOfRecords_Test()
+    {
+        //Arrange
+        var date = DateTime.UtcNow;
+        var buyerId = Guid.NewGuid().ToString();
+        var listOriginal = new List<SaleDataModel>()
+{
+new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(),
+null, DiscountType.None, false,
+[new SaleProductDataModel(Guid.NewGuid().ToString(),
+Guid.NewGuid().ToString(), 5, 1.2)]),
+new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(),
+null, DiscountType.None, false, []),
+new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(),
+null, DiscountType.None, 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 =
+        _saleBusinessLogicContract.GetAllSalesByBuyerByPeriod(buyerId, 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, buyerId, null), Times.Once);
+    }
+    [Test]
+    public void GetAllSalesByBuyerByPeriod_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 =
+        _saleBusinessLogicContract.GetAllSalesByBuyerByPeriod(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 GetAllSalesByBuyerByPeriod_IncorrectDates_ThrowException_Test()
+    {
+        //Arrange
+        var date = DateTime.UtcNow;
+        //Act&Assert
+        Assert.That(() =>
+        _saleBusinessLogicContract.GetAllSalesByBuyerByPeriod(Guid.NewGuid().ToString(),
+        date, date), Throws.TypeOf<IncorrectDatesException>());
+        Assert.That(() =>
+        _saleBusinessLogicContract.GetAllSalesByBuyerByPeriod(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
+    GetAllSalesByBuyerByPeriod_BuyerIdIsNullOrEmpty_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() =>
+        _saleBusinessLogicContract.GetAllSalesByBuyerByPeriod(null, DateTime.UtcNow,
+        DateTime.UtcNow.AddDays(1)), Throws.TypeOf<ArgumentNullException>());
+        Assert.That(() =>
+        _saleBusinessLogicContract.GetAllSalesByBuyerByPeriod(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
+    GetAllSalesByBuyerByPeriod_BuyerIdIsNotGuid_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() =>
+        _saleBusinessLogicContract.GetAllSalesByBuyerByPeriod("buyerId", 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 GetAllSalesByBuyerByPeriod_ReturnNull_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() =>
+        _saleBusinessLogicContract.GetAllSalesByBuyerByPeriod(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
+    GetAllSalesByBuyerByPeriod_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(() =>
+        _saleBusinessLogicContract.GetAllSalesByBuyerByPeriod(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, DiscountType.None, false,
+[new SaleProductDataModel(Guid.NewGuid().ToString(),
+Guid.NewGuid().ToString(), 5, 1.2)]),
+new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(),
+null, DiscountType.None, false, []),
+new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(),
+null, DiscountType.None, 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 =
+        _saleBusinessLogicContract.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 =
+        _saleBusinessLogicContract.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(() =>
+        _saleBusinessLogicContract.GetAllSalesByProductByPeriod(Guid.NewGuid().ToString()
+        , date, date), Throws.TypeOf<IncorrectDatesException>());
+        Assert.That(() =>
+        _saleBusinessLogicContract.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(() =>
+        _saleBusinessLogicContract.GetAllSalesByProductByPeriod(null, DateTime.UtcNow,
+        DateTime.UtcNow.AddDays(1)), Throws.TypeOf<ArgumentNullException>());
+        Assert.That(() =>
+        _saleBusinessLogicContract.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(() =>
+        _saleBusinessLogicContract.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(() =>
+        _saleBusinessLogicContract.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(() =>
+        _saleBusinessLogicContract.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,
+        DiscountType.None, false,
+        [new SaleProductDataModel(Guid.NewGuid().ToString(),
+Guid.NewGuid().ToString(), 5, 1.2)]);
+        _saleStorageContract.Setup(x =>
+        x.GetElementById(id)).Returns(record);
+        //Act
+        var element = _saleBusinessLogicContract.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(() => _saleBusinessLogicContract.GetSaleByData(null),
+        Throws.TypeOf<ArgumentNullException>());
+        Assert.That(() =>
+        _saleBusinessLogicContract.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(() => _saleBusinessLogicContract.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(() =>
+        _saleBusinessLogicContract.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(() =>
+        _saleBusinessLogicContract.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(), DiscountType.None,
+        false, [new SaleProductDataModel(Guid.NewGuid().ToString(),
+Guid.NewGuid().ToString(), 5, 1.2)]);
+        _saleStorageContract.Setup(x =>
+        x.AddElement(It.IsAny<SaleDataModel>()))
+        .Callback((SaleDataModel x) =>
+        {
+            flag = x.Id == record.Id && x.WorkerId ==
+        record.WorkerId && x.BuyerId == record.BuyerId &&
+        x.SaleDate == record.SaleDate && x.Sum ==
+        record.Sum && x.DiscountType == record.DiscountType &&
+        x.Discount == record.Discount && 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
+        _saleBusinessLogicContract.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(() =>
+        _saleBusinessLogicContract.InsertSale(new(Guid.NewGuid().ToString(),
+        Guid.NewGuid().ToString(),
+        Guid.NewGuid().ToString(), DiscountType.None, false, [new
+SaleProductDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 5,
+1.2)])), Throws.TypeOf<ElementExistsException>());
+        _saleStorageContract.Verify(x =>
+        x.AddElement(It.IsAny<SaleDataModel>()), Times.Once);
+    }
+    [Test]
+    public void InsertSale_NullRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _saleBusinessLogicContract.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(() => _saleBusinessLogicContract.InsertSale(new
+        SaleDataModel("id", Guid.NewGuid().ToString(), Guid.NewGuid().ToString(),
+        DiscountType.None, 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(() =>
+        _saleBusinessLogicContract.InsertSale(new(Guid.NewGuid().ToString(),
+        Guid.NewGuid().ToString(),
+        Guid.NewGuid().ToString(), DiscountType.None, false, [new
+SaleProductDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 5,
+1.2)])), 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
+        _saleBusinessLogicContract.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(() =>
+        _saleBusinessLogicContract.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(() => _saleBusinessLogicContract.CancelSale(null),
+        Throws.TypeOf<ArgumentNullException>());
+        Assert.That(() =>
+        _saleBusinessLogicContract.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(() => _saleBusinessLogicContract.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(() =>
+        _saleBusinessLogicContract.CancelSale(Guid.NewGuid().ToString()),
+        Throws.TypeOf<StorageException>());
+        _saleStorageContract.Verify(x => x.DelElement(It.IsAny<string>()),
+        Times.Once);
+    }
+}

Romashki/RomashkiTests/BusinessLogicsContractsTests/WorkerBusinessLogicContractTests.cs

@@ -0,0 +1,771 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Microsoft.Extensions.Logging;
+using Moq;
+using RomashkiBusinessLogic.Implementations;
+using RomashkiContract.Exceptions;
+using RomashkiContract.StoragesContracts;
+using RomashkiContracts.DataModels;
+using RomashkiContracts.Exceptions;
+
+namespace RomashkiTests.BusinessLogicsContractsTests;
+
+[TestFixture]
+internal class WorkerBusinessLogicContractTests
+{
+    private WorkerBusinessLogicContract _workerBusinessLogicContract;
+    private Mock<IWorkerStorageContract> _workerStorageContract;
+    [OneTimeSetUp]
+    public void OneTimeSetUp()
+    {
+        _workerStorageContract = new Mock<IWorkerStorageContract>();
+        _workerBusinessLogicContract = new
+        WorkerBusinessLogicContract(_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(), DateTime.Now.AddYears(-16).AddDays(-1), DateTime.Now,
+            false),
+new(Guid.NewGuid().ToString(), "fio 2",
+Guid.NewGuid().ToString(), DateTime.Now.AddYears(-16).AddDays(-1), DateTime.Now,
+true),
+new(Guid.NewGuid().ToString(), "fio 3",
+Guid.NewGuid().ToString(), 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 =
+        _workerBusinessLogicContract.GetAllWorkers(true);
+        var list = _workerBusinessLogicContract.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 =
+        _workerBusinessLogicContract.GetAllWorkers(true);
+        var list = _workerBusinessLogicContract.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(() =>
+        _workerBusinessLogicContract.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(() =>
+        _workerBusinessLogicContract.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(), DateTime.Now.AddYears(-16).AddDays(-1), DateTime.Now,
+false),
+new(Guid.NewGuid().ToString(), "fio 2",
+Guid.NewGuid().ToString(), DateTime.Now.AddYears(-16).AddDays(-1), DateTime.Now,
+true),
+new(Guid.NewGuid().ToString(), "fio 3",
+Guid.NewGuid().ToString(), 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 =
+        _workerBusinessLogicContract.GetAllWorkersByPost(postId, true);
+        var list = _workerBusinessLogicContract.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 =
+        _workerBusinessLogicContract.GetAllWorkersByPost(Guid.NewGuid().ToString(),
+        true);
+        var list =
+        _workerBusinessLogicContract.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(() =>
+        _workerBusinessLogicContract.GetAllWorkersByPost(null, It.IsAny<bool>()),
+        Throws.TypeOf<ArgumentNullException>());
+        Assert.That(() =>
+        _workerBusinessLogicContract.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(() =>
+        _workerBusinessLogicContract.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(() =>
+        _workerBusinessLogicContract.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()
+{
+_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(() =>
+_workerBusinessLogicContract.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(), DateTime.Now.AddYears(-16).AddDays(-1), DateTime.Now,
+false),
+new(Guid.NewGuid().ToString(), "fio 2",
+Guid.NewGuid().ToString(), DateTime.Now.AddYears(-16).AddDays(-1), DateTime.Now,
+true),
+new(Guid.NewGuid().ToString(), "fio 3",
+Guid.NewGuid().ToString(), 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 =
+        _workerBusinessLogicContract.GetAllWorkersByBirthDate(date, date.AddDays(1),
+        true);
+        var list =
+        _workerBusinessLogicContract.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 =
+    _workerBusinessLogicContract.GetAllWorkersByBirthDate(DateTime.UtcNow,
+    DateTime.UtcNow.AddDays(1), true);
+        var list = _workerBusinessLogicContract.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(() =>
+        _workerBusinessLogicContract.GetAllWorkersByBirthDate(date, date,
+        It.IsAny<bool>()), Throws.TypeOf<IncorrectDatesException>());
+        Assert.That(() =>
+        _workerBusinessLogicContract.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(() =>
+        _workerBusinessLogicContract.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(() =>
+        _workerBusinessLogicContract.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(), DateTime.Now.AddYears(-16).AddDays(-1), DateTime.Now,
+false),
+new(Guid.NewGuid().ToString(), "fio 2",
+Guid.NewGuid().ToString(), DateTime.Now.AddYears(-16).AddDays(-1), DateTime.Now,
+true),
+new(Guid.NewGuid().ToString(), "fio 3",
+Guid.NewGuid().ToString(), 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 =
+        _workerBusinessLogicContract.GetAllWorkersByEmploymentDate(date, date.AddDays(1),
+        true);
+        var list =
+        _workerBusinessLogicContract.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 =
+        _workerBusinessLogicContract.GetAllWorkersByEmploymentDate(DateTime.UtcNow,
+        DateTime.UtcNow.AddDays(1), true);
+        var list =
+        _workerBusinessLogicContract.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(() =>
+        _workerBusinessLogicContract.GetAllWorkersByEmploymentDate(date, date,
+        It.IsAny<bool>()), Throws.TypeOf<IncorrectDatesException>());
+        Assert.That(() =>
+        _workerBusinessLogicContract.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(() =>
+        _workerBusinessLogicContract.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(() =>
+        _workerBusinessLogicContract.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(), DateTime.Now.AddYears(-16).AddDays(-1), DateTime.Now,
+        false);
+        _workerStorageContract.Setup(x =>
+        x.GetElementById(id)).Returns(record);
+        //Act
+        var element = _workerBusinessLogicContract.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(), DateTime.Now.AddYears(-16).AddDays(-1), DateTime.Now,
+        false);
+        _workerStorageContract.Setup(x =>
+        x.GetElementByFIO(fio)).Returns(record);
+        //Act
+        var element = _workerBusinessLogicContract.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_EmptyData_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _workerBusinessLogicContract.GetWorkerByData(null),
+        Throws.TypeOf<ArgumentNullException>());
+        Assert.That(() =>
+        _workerBusinessLogicContract.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(() =>
+        _workerBusinessLogicContract.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(() =>
+    _workerBusinessLogicContract.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_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()));
+    //Act&Assert
+    Assert.That(() =>
+    _workerBusinessLogicContract.GetWorkerByData(Guid.NewGuid().ToString()),
+    Throws.TypeOf<StorageException>());
+    Assert.That(() =>
+    _workerBusinessLogicContract.GetWorkerByData("fio"),
+    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(), 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.BirthDate == record.BirthDate &&
+    x.EmploymentDate == record.EmploymentDate &&
+    x.IsDeleted == record.IsDeleted;
+    });
+    //Act
+    _workerBusinessLogicContract.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(() =>
+    _workerBusinessLogicContract.InsertWorker(new(Guid.NewGuid().ToString(), "fio",
+    Guid.NewGuid().ToString(), 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(() => _workerBusinessLogicContract.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(() => _workerBusinessLogicContract.InsertWorker(new
+    WorkerDataModel("id", "fio", Guid.NewGuid().ToString(), 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(() =>
+    _workerBusinessLogicContract.InsertWorker(new(Guid.NewGuid().ToString(), "fio",
+    Guid.NewGuid().ToString(), 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(), 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.BirthDate == record.BirthDate &&
+    x.EmploymentDate == record.EmploymentDate &&
+    x.IsDeleted == record.IsDeleted;
+    });
+    //Act
+    _workerBusinessLogicContract.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(() =>
+    _workerBusinessLogicContract.UpdateWorker(new(Guid.NewGuid().ToString(), "fio",
+    Guid.NewGuid().ToString(), 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(() => _workerBusinessLogicContract.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(() => _workerBusinessLogicContract.UpdateWorker(new
+    WorkerDataModel("id", "fio", Guid.NewGuid().ToString(), 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(() =>
+    _workerBusinessLogicContract.UpdateWorker(new(Guid.NewGuid().ToString(), "fio",
+    Guid.NewGuid().ToString(), 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
+    _workerBusinessLogicContract.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(() =>
+    _workerBusinessLogicContract.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(() => _workerBusinessLogicContract.DeleteWorker(null),
+    Throws.TypeOf<ArgumentNullException>());
+    Assert.That(() =>
+    _workerBusinessLogicContract.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(() => _workerBusinessLogicContract.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()));
+
+Assert.That(() =>
+_workerBusinessLogicContract.DeleteWorker(Guid.NewGuid().ToString()),
+Throws.TypeOf<StorageException>());
+    _workerStorageContract.Verify(x => x.DelElement(It.IsAny<string>()),
+    Times.Once);
+}
+}

Romashki/RomashkiTests/DataModelsTests/BuyerDataModelTests.cs

@@ -1,7 +1,7 @@
 using RomashkiContracts.DataModels;
 using RomashkiContracts.Exceptions;
 
-namespace RomashkiTests
+namespace RomashkiTests.DataModelsTests
 {
     [TestFixture]
     internal class BuyerDataModelTests

Romashki/RomashkiTests/DataModelsTests/DiscountDataModelTests.cs

@@ -6,7 +6,7 @@ using System.Threading.Tasks;
 using RomashkiContract.DataModels;
 using RomashkiContracts.Exceptions;
 
-namespace RomashkiTests;
+namespace RomashkiTests.DataModelsTests;
 
 internal class DiscountDataModelTests
 {

Romashki/RomashkiTests/DataModelsTests/PostDataModelTests.cs

@@ -7,7 +7,7 @@ using RomashkiContracts.DataModels;
 using RomashkiContracts.Enums;
 using RomashkiContracts.Exceptions;
 
-namespace RomashkiTests
+namespace RomashkiTests.DataModelsTests
 {
     [TestFixture]
     internal class PostDataModelTests
@@ -15,54 +15,38 @@ namespace RomashkiTests
         [Test]
         public void IdIsNullOrEmptyTest()
         {
-            var post = CreateDataModel(null, Guid.NewGuid().ToString(), "name",
+            var post = CreateDataModel(null, "name",
             PostType.Assistant, true, DateTime.UtcNow);
             Assert.That(() => post.Validate(),
             Throws.TypeOf<ValidationException>());
-            post = CreateDataModel(string.Empty, Guid.NewGuid().ToString(), "name", PostType.Assistant, true, DateTime.UtcNow);
+            post = CreateDataModel(string.Empty, "name", PostType.Assistant, true, DateTime.UtcNow);
             Assert.That(() => post.Validate(),
             Throws.TypeOf<ValidationException>());
         }
         [Test]
         public void IdIsNotGuidTest()
         {
-            var post = CreateDataModel("id", Guid.NewGuid().ToString(), "name",
+            var post = CreateDataModel("id", "name",
             PostType.Assistant, true, DateTime.UtcNow);
             Assert.That(() => post.Validate(),
             Throws.TypeOf<ValidationException>());
         }
-        [Test]
-        public void PostIdIsNullEmptyTest()
-        {
-            var post = CreateDataModel(Guid.NewGuid().ToString(), null, "name",
-            PostType.Assistant, true, DateTime.UtcNow);
-            Assert.That(() => post.Validate(), Throws.TypeOf<ValidationException>());
-            post = CreateDataModel(Guid.NewGuid().ToString(), string.Empty,
-            "name", PostType.Assistant, true, DateTime.UtcNow);
-            Assert.That(() => post.Validate(), Throws.TypeOf<ValidationException>());
-        }
-        [Test]
-        public void PostIdIsNotGuidTest()
-        {
-            var post = CreateDataModel(Guid.NewGuid().ToString(), "postId",
-            "name", PostType.Assistant , 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.Assistant, true, DateTime.UtcNow);
+           null, PostType.Assistant, true, DateTime.UtcNow);
             Assert.That(() => manufacturer.Validate(), Throws.TypeOf<ValidationException>());
             manufacturer = CreateDataModel(Guid.NewGuid().ToString(), 
-                Guid.NewGuid().ToString(), string.Empty, PostType.Assistant, true, DateTime.UtcNow);
+               string.Empty, PostType.Assistant, true, DateTime.UtcNow);
             Assert.That(() => manufacturer.Validate(), Throws.TypeOf<ValidationException>());
         }
         [Test]
         public void PostTypeIsNoneTest()
         {
-            var post = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(),
+            var post = CreateDataModel(Guid.NewGuid().ToString(),
                 "name", PostType.None, true, DateTime.UtcNow);
             Assert.That(() => post.Validate(), Throws.TypeOf<ValidationException>());
         }
@@ -76,20 +60,19 @@ namespace RomashkiTests
             var postType = PostType.Assistant;
             var isActual = false;
             var changeDate = DateTime.UtcNow.AddDays(-1);
-            var post = CreateDataModel(postId, postPostId, postName, postType, isActual, changeDate);
+            var post = CreateDataModel(postId, postName, postType, 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.IsActual, Is.EqualTo(isActual));
                 Assert.That(post.ChangeDate, Is.EqualTo(changeDate));
             });
         }
-        private static PostDataModel CreateDataModel(string? id, string? postId,
+        private static PostDataModel CreateDataModel(string? id,
         string? postName, PostType postType, bool isActual, DateTime
-        changeDate) => new(id, postId, postName, postType, isActual, changeDate);
+        changeDate) => new(id, postName, postType, isActual, changeDate);
     }
 }

Romashki/RomashkiTests/DataModelsTests/ProductDataModelTests.cs

@@ -7,7 +7,7 @@ using RomashkiContracts.DataModels;
 using RomashkiContracts.Enums;
 using RomashkiContracts.Exceptions;
 
-namespace RomashkiTests
+namespace RomashkiTests.DataModelsTests
 {
     [TestFixture]
     internal class ProductDataModelTests

Romashki/RomashkiTests/DataModelsTests/ProductHistoryDataModelTests.cs

@@ -6,7 +6,7 @@ using System.Threading.Tasks;
 using RomashkiContracts.DataModels;
 using RomashkiContracts.Exceptions;
 
-namespace RomashkiTests
+namespace RomashkiTests.DataModelsTests
 {
     [TestFixture]
     internal class ProductHistoryDataModelTests

Romashki/RomashkiTests/DataModelsTests/SaleDataModelTests.cs

@@ -7,7 +7,7 @@ using RomashkiContracts.DataModels;
 using RomashkiContracts.Enums;
 using RomashkiContracts.Exceptions;
 
-namespace RomashkiTests
+namespace RomashkiTests.DataModelsTests
 {
     [TestFixture]
     internal class SaleDataModelTests

Romashki/RomashkiTests/DataModelsTests/SaleProductDataModelTests.cs

@@ -6,7 +6,7 @@ using System.Threading.Tasks;
 using RomashkiContracts.DataModels;
 using RomashkiContracts.Exceptions;
 
-namespace RomashkiTests
+namespace RomashkiTests.DataModelsTests
 {
     [TestFixture]
     internal class SaleProductDataModelTests

Romashki/RomashkiTests/DataModelsTests/WorkerDataModelTests.cs

@@ -6,7 +6,7 @@ using System.Threading.Tasks;
 using RomashkiContracts.DataModels;
 using RomashkiContracts.Exceptions;
 
-namespace RomashkiTests
+namespace RomashkiTests.DataModelsTests
 {
     [TestFixture]
     internal class WorkerDataModelTests

Romashki/RomashkiTests/RomashkiTests.csproj

@@ -2,6 +2,7 @@
 
   <PropertyGroup>
     <TargetFramework>net9.0</TargetFramework>
+	  <AssemblyName>RomashkiTests</AssemblyName>
     <LangVersion>latest</LangVersion>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
@@ -11,6 +12,7 @@
   <ItemGroup>
     <PackageReference Include="coverlet.collector" Version="6.0.2" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
+    <PackageReference Include="Moq" Version="4.20.72" />
     <PackageReference Include="NUnit" Version="4.2.2" />
     <PackageReference Include="NUnit.Analyzers" Version="4.4.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.6.0" />
@@ -22,6 +24,7 @@
 
   <ItemGroup>
     <Using Include="NUnit.Framework" />
+  		<ProjectReference Include="..\RomashkiBusinessLogic\RomashkiBusinessLogic.csproj" />
 </ItemGroup>
 
 </Project>