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FurnitureAssembly/FurnitureAssembly.sln

@@ -7,6 +7,10 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FurnitureAssemblyContracts"
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FurnitureAssemblyTests", "FurnitureAssemblyTests\FurnitureAssemblyTests.csproj", "{3E0F3B5D-397A-4193-8A0D-BDD12F48B631}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FurnitureAssemblyBusinessLogic", "FurnitureAssemblyBusinessLogic\FurnitureAssemblyBusinessLogic.csproj", "{698BF48B-C9AC-4684-8150-52E8148F15A0}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FurnitureAssemblyDatebase", "FurnitureAssemblyDatebase\FurnitureAssemblyDatebase.csproj", "{BDE6EBBB-E735-408D-B34B-490C2AE9201B}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -21,6 +25,14 @@ Global
 		{3E0F3B5D-397A-4193-8A0D-BDD12F48B631}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{3E0F3B5D-397A-4193-8A0D-BDD12F48B631}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{3E0F3B5D-397A-4193-8A0D-BDD12F48B631}.Release|Any CPU.Build.0 = Release|Any CPU
+		{698BF48B-C9AC-4684-8150-52E8148F15A0}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{698BF48B-C9AC-4684-8150-52E8148F15A0}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{698BF48B-C9AC-4684-8150-52E8148F15A0}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{698BF48B-C9AC-4684-8150-52E8148F15A0}.Release|Any CPU.Build.0 = Release|Any CPU
+		{BDE6EBBB-E735-408D-B34B-490C2AE9201B}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{BDE6EBBB-E735-408D-B34B-490C2AE9201B}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{BDE6EBBB-E735-408D-B34B-490C2AE9201B}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{BDE6EBBB-E735-408D-B34B-490C2AE9201B}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

FurnitureAssembly/FurnitureAssemblyBusinessLogic/FurnitureAssemblyBusinessLogic.csproj

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

FurnitureAssembly/FurnitureAssemblyBusinessLogic/Implementations/ComponentBusinessLogicContract.cs

@@ -0,0 +1,66 @@
+using FurnitureAssemblyContracts.BusinessLogicsContracts;
+using FurnitureAssemblyContracts.DataModels;
+using FurnitureAssemblyContracts.Exceptions;
+using FurnitureAssemblyContracts.Extentions;
+using FurnitureAssemblyContracts.StoragesContracts;
+using Microsoft.Extensions.Logging;
+using System.Text.Json;
+
+namespace FurnitureAssemblyBusinessLogic.Implementations;
+
+internal class ComponentBusinessLogicContract(IComponentStorageContract componentStorageContract, ILogger logger) : IComponentBusinessLogicContract
+{
+    private readonly IComponentStorageContract _componentStorageContract = componentStorageContract;
+    private readonly ILogger _logger = logger;
+
+    public List<ComponentDataModel> GetAllComponents()
+    {
+        _logger.LogInformation("GetAllComponents");
+        return _componentStorageContract.GetList() ?? throw new NullListException();
+    }
+
+    public ComponentDataModel GetComponentByData(string data)
+    {
+        _logger.LogInformation("Get element by data: {data}", data);
+        if (data.IsEmpty())
+        {
+            throw new ArgumentNullException(nameof(data));
+        }
+        if (data.IsGuid())
+        {
+            return _componentStorageContract.GetElementById(data) ?? throw new ElementNotFoundException(data);
+        }
+        return _componentStorageContract.GetElementByName(data) ?? _componentStorageContract.GetElementByOldName(data) ??
+                throw new ElementNotFoundException(data);
+    }
+
+    public void InsertComponent(ComponentDataModel componentDataModel)
+    {
+        _logger.LogInformation("New data: {json}", JsonSerializer.Serialize(componentDataModel));
+        ArgumentNullException.ThrowIfNull(componentDataModel);
+        componentDataModel.Validate();
+        _componentStorageContract.AddElement(componentDataModel);
+    }
+
+    public void UpdateComponent(ComponentDataModel componentDataModel)
+    {
+        _logger.LogInformation("Update data: {json}", JsonSerializer.Serialize(componentDataModel));
+        ArgumentNullException.ThrowIfNull(componentDataModel);
+        componentDataModel.Validate();
+        _componentStorageContract.UpdElement(componentDataModel);
+    }
+
+    public void DeleteComponent(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");
+        }
+        _componentStorageContract.DelElement(id);
+    }
+}

FurnitureAssembly/FurnitureAssemblyBusinessLogic/Implementations/FurnitureBusinessLogicContract.cs

@@ -0,0 +1,65 @@
+using FurnitureAssemblyContracts.BusinessLogicsContracts;
+using FurnitureAssemblyContracts.DataModels;
+using FurnitureAssemblyContracts.Exceptions;
+using FurnitureAssemblyContracts.Extentions;
+using FurnitureAssemblyContracts.StoragesContracts;
+using Microsoft.Extensions.Logging;
+using System.Text.Json;
+
+namespace FurnitureAssemblyBusinessLogic.Implementations;
+
+internal class FurnitureBusinessLogicContract(IFurnitureStorageContract furnitureStorageContract, ILogger logger) : IFurnitureBusinessLogicContract
+{
+    IFurnitureStorageContract _furnitureStorageContract = furnitureStorageContract;
+    private readonly ILogger _logger = logger;
+
+    public List<FurnitureDataModel> GetAllFurnitures()
+    {
+        _logger.LogInformation("GetAllFurnitures");
+        return furnitureStorageContract.GetList() ?? throw new NullListException();
+    }
+
+    public FurnitureDataModel GetFurnitureByData(string data)
+    {
+        _logger.LogInformation("Get element by data: {data}", data);
+        if (data.IsEmpty())
+        {
+            throw new ArgumentNullException(nameof(data));
+        }
+        if (data.IsGuid())
+        {
+            return _furnitureStorageContract.GetElementById(data) ?? throw new ElementNotFoundException(data);
+        }
+        return _furnitureStorageContract.GetElementByName(data) ?? throw new ElementNotFoundException(data);
+    }
+
+    public void InsertFurniture(FurnitureDataModel furnitureDataModel)
+    {
+        _logger.LogInformation("New data: {json}", JsonSerializer.Serialize(furnitureDataModel));
+        ArgumentNullException.ThrowIfNull(furnitureDataModel);
+        furnitureDataModel.Validate();
+        _furnitureStorageContract.AddElement(furnitureDataModel);
+    }
+
+    public void UpdateFurniture(FurnitureDataModel furnitureDataModel)
+    {
+        _logger.LogInformation("Update data: {json}", JsonSerializer.Serialize(furnitureDataModel));
+        ArgumentNullException.ThrowIfNull(furnitureDataModel);
+        furnitureDataModel.Validate();
+        _furnitureStorageContract.UpdElement(furnitureDataModel);
+    }
+
+    public void DeleteFurniture(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");
+        }
+        _furnitureStorageContract.DelElement(id);
+    }
+}

FurnitureAssembly/FurnitureAssemblyBusinessLogic/Implementations/ManifacturingBusinessLogicContract.cs

@@ -0,0 +1,91 @@
+using FurnitureAssemblyContracts.BusinessLogicsContracts;
+using FurnitureAssemblyContracts.DataModels;
+using FurnitureAssemblyContracts.Exceptions;
+using FurnitureAssemblyContracts.Extentions;
+using FurnitureAssemblyContracts.StoragesContracts;
+using Microsoft.Extensions.Logging;
+using System.Text.Json;
+
+namespace FurnitureAssemblyBusinessLogic.Implementations;
+
+internal class ManifacturingBusinessLogicContract(IManifacturingStorageContract manifacturingStorageContract, ILogger logger) : IManifacturingBusinessLogicContract
+{
+    IManifacturingStorageContract _manifacturingStorageContract = manifacturingStorageContract;
+    private readonly ILogger _logger = logger;
+
+    public List<ManifacturingFurnitureDataModel> GetAllManifacturingByFurnitureByPeriod(string furnitureId, DateTime fromDate, DateTime toDate)
+    {
+        _logger.LogInformation("GetAllSales params: {furnitureId}, {fromDate}, { toDate}", furnitureId, fromDate, toDate);
+        if (fromDate.IsDateNotOlder(toDate))
+        {
+            throw new IncorrectDatesException(fromDate, toDate);
+        }
+        if (furnitureId.IsEmpty())
+        {
+            throw new ArgumentNullException(nameof(furnitureId));
+        }
+        if (!furnitureId.IsGuid())
+        {
+            throw new ValidationException("The value in the field furnitureId is not a unique identifier.");
+        }
+        return _manifacturingStorageContract.GetList(fromDate, toDate, furnitureId: furnitureId) ?? throw new NullListException();
+    }
+
+    public List<ManifacturingFurnitureDataModel> GetAllManifacturingByWorkerByPeriod(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 _manifacturingStorageContract.GetList(fromDate, toDate, workerId: workerId) ?? throw new NullListException();
+    }
+
+    public List<ManifacturingFurnitureDataModel> GetManifacturingByPeriod(DateTime fromDate, DateTime toDate)
+    {
+        _logger.LogInformation("GetAllSales params: {fromDate}, {toDate}", fromDate, toDate);
+        if (fromDate.IsDateNotOlder(toDate))
+        {
+            throw new IncorrectDatesException(fromDate, toDate);
+        }
+        return _manifacturingStorageContract.GetList(fromDate, toDate) ?? throw new NullListException();
+    }
+
+    public ManifacturingFurnitureDataModel GetManifacturingByData(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 uniqueidentifier");
+        }
+        return _manifacturingStorageContract.GetElementById(data) ?? throw new ElementNotFoundException(data);
+    }
+
+    public void InsertFurniture(ManifacturingFurnitureDataModel manifacturingDataModel)
+    {
+        _logger.LogInformation("New data: {json}", JsonSerializer.Serialize(manifacturingDataModel));
+        ArgumentNullException.ThrowIfNull(manifacturingDataModel);
+        manifacturingDataModel.Validate();
+        _manifacturingStorageContract.AddElement(manifacturingDataModel);
+    }
+
+    public void UpdateFurniture(ManifacturingFurnitureDataModel manifacturingDataModel)
+    {
+        _logger.LogInformation("Update data: {json}", JsonSerializer.Serialize(manifacturingDataModel));
+        ArgumentNullException.ThrowIfNull(manifacturingDataModel);
+        manifacturingDataModel.Validate();
+        _manifacturingStorageContract.UpdElement(manifacturingDataModel);
+    }
+}

FurnitureAssembly/FurnitureAssemblyBusinessLogic/Implementations/PostBusinessLogicContract.cs

@@ -0,0 +1,93 @@
+using FurnitureAssemblyContracts.BusinessLogicsContracts;
+using FurnitureAssemblyContracts.DataModels;
+using FurnitureAssemblyContracts.Exceptions;
+using FurnitureAssemblyContracts.Extentions;
+using FurnitureAssemblyContracts.StoragesContracts;
+using Microsoft.Extensions.Logging;
+using System.Text.Json;
+
+namespace FurnitureAssemblyBusinessLogic.Implementations;
+
+internal class PostBusinessLogicContract(IPostStorageContract postStorageContract, ILogger logger) : IPostBusinessLogicContract
+{
+    IPostStorageContract _postStorageContract = postStorageContract;
+    private readonly ILogger _logger = logger;
+
+    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 List<PostDataModel> GetAllPosts(bool onlyActive)
+    {
+        _logger.LogInformation("GetAllPosts params: {onlyActive}", onlyActive);
+        return _postStorageContract.GetList(onlyActive) ?? 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);
+    }
+}

FurnitureAssembly/FurnitureAssemblyBusinessLogic/Implementations/SalaryBusinessLogicContract.cs

@@ -0,0 +1,62 @@
+using FurnitureAssemblyContracts.BusinessLogicsContracts;
+using FurnitureAssemblyContracts.DataModels;
+using FurnitureAssemblyContracts.Exceptions;
+using FurnitureAssemblyContracts.Extentions;
+using FurnitureAssemblyContracts.StoragesContracts;
+using Microsoft.Extensions.Logging;
+
+namespace FurnitureAssemblyBusinessLogic.Implementations;
+
+internal class SalaryBusinessLogicContract(ISalaryStorageContract salaryStorageContract, IManifacturingStorageContract manifacturingStorageContract, IPostStorageContract
+                                            postStorageContract, IWorkerStorageContract workerStorageContract, ILogger logger) : ISalaryBusinessLogicContract
+{
+    private readonly ILogger _logger = logger;
+    private readonly ISalaryStorageContract _salaryStorageContract = salaryStorageContract;
+    private readonly IManifacturingStorageContract _manifacturingStorageContract = manifacturingStorageContract;
+    private readonly IPostStorageContract _postStorageContract = postStorageContract;
+    private readonly IWorkerStorageContract _workerStorageContract = workerStorageContract;
+
+    public List<SalaryDataModel> GetAllSalariesByPeriod(DateTime fromDate, DateTime toDate)
+    {
+        _logger.LogInformation("GetAllSalaries params: {fromDate}, {toDate}", fromDate, toDate);
+        if (fromDate.IsDateNotOlder(toDate))
+        {
+            throw new IncorrectDatesException(fromDate, toDate);
+        }
+        return _salaryStorageContract.GetList(fromDate, toDate) ?? throw new NullListException();
+    }
+
+    public List<SalaryDataModel> GetAllSalariesByPeriodByWorker(DateTime fromDate, DateTime toDate, string workerId)
+    {
+        if (fromDate.IsDateNotOlder(toDate))
+        {
+            throw new IncorrectDatesException(fromDate, toDate);
+        }
+        if (workerId.IsEmpty())
+        {
+            throw new ArgumentNullException(nameof(workerId));
+        }
+        if (!workerId.IsGuid())
+        {
+            throw new ValidationException("The value in the field workerId is not a unique identifier.");
+        }
+        _logger.LogInformation("GetAllSalaries params: {fromDate}, {toDate}, { workerId}", fromDate, toDate, workerId);
+        return _salaryStorageContract.GetList(fromDate, toDate, workerId) ?? throw new NullListException();
+    }
+
+    public void CalculateSalaryByMounth(DateTime date)
+    {
+        _logger.LogInformation("CalculateSalaryByMounth: {date}", date);
+        var startDate = new DateTime(date.Year, date.Month, 1);
+        var finishDate = new DateTime(date.Year, date.Month, DateTime.DaysInMonth(date.Year, date.Month));
+        var workers = _workerStorageContract.GetList() ?? throw new NullListException();
+        foreach (var worker in workers)
+        {
+            var sales = _manifacturingStorageContract.GetList(startDate, finishDate, workerId: worker.Id)?.Sum(x => x.Count) ?? throw new NullListException();
+            var post = _postStorageContract.GetElementById(worker.PostId) ?? throw new NullListException();
+            var salary = post.Salary + sales * 0.1;
+            _logger.LogDebug("The employee {workerId} was paid a salary of { salary}", worker.Id, salary);
+            _salaryStorageContract.AddElement(new SalaryDataModel(worker.Id, finishDate, salary));
+        }
+    }
+}

FurnitureAssembly/FurnitureAssemblyBusinessLogic/Implementations/WorkerBusinessLogicContract.cs

@@ -0,0 +1,100 @@
+using FurnitureAssemblyContracts.BusinessLogicsContracts;
+using FurnitureAssemblyContracts.DataModels;
+using FurnitureAssemblyContracts.Exceptions;
+using FurnitureAssemblyContracts.Extentions;
+using FurnitureAssemblyContracts.StoragesContracts;
+using Microsoft.Extensions.Logging;
+using System.Text.Json;
+
+namespace FurnitureAssemblyBusinessLogic.Implementations;
+
+internal class WorkerBusinessLogicContract(IWorkerStorageContract workerStorageContract, ILogger logger) : IWorkerBusinessLogicContract
+{
+    private readonly IWorkerStorageContract _workerStorageContract = workerStorageContract;
+    private readonly ILogger _logger = logger;
+
+    public List<WorkerDataModel> GetAllWorkers(bool onlyActive = true)
+    {
+        logger.LogInformation("GetAllWorkers params: {onlyActive}", onlyActive);
+        return _workerStorageContract.GetList(onlyActive) ?? 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 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 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);
+    }
+}

FurnitureAssembly/FurnitureAssemblyContracts/BusinessLogicsContracts/IComponentBusinessLogicContract.cs

@@ -0,0 +1,12 @@
+using FurnitureAssemblyContracts.DataModels;
+
+namespace FurnitureAssemblyContracts.BusinessLogicsContracts;
+
+public interface IComponentBusinessLogicContract
+{
+    List<ComponentDataModel> GetAllComponents();
+    ComponentDataModel GetComponentByData(string data);
+    void InsertComponent(ComponentDataModel componentDataModel);
+    void UpdateComponent(ComponentDataModel componentDataModel);
+    void DeleteComponent(string id);
+}

FurnitureAssembly/FurnitureAssemblyContracts/BusinessLogicsContracts/IFurnitureBusinessLogicContract.cs

@@ -0,0 +1,12 @@
+using FurnitureAssemblyContracts.DataModels;
+
+namespace FurnitureAssemblyContracts.BusinessLogicsContracts;
+
+public interface IFurnitureBusinessLogicContract
+{
+    List<FurnitureDataModel> GetAllFurnitures();
+    FurnitureDataModel GetFurnitureByData(string data);
+    void InsertFurniture(FurnitureDataModel furnitureDataModel);
+    void UpdateFurniture(FurnitureDataModel furnitureDataModel);
+    void DeleteFurniture(string id);
+}

FurnitureAssembly/FurnitureAssemblyContracts/BusinessLogicsContracts/IManifacturingBusinessLogicContract.cs

@@ -0,0 +1,13 @@
+using FurnitureAssemblyContracts.DataModels;
+
+namespace FurnitureAssemblyContracts.BusinessLogicsContracts;
+
+public interface IManifacturingBusinessLogicContract
+{
+    List<ManifacturingFurnitureDataModel> GetManifacturingByPeriod(DateTime fromDate, DateTime toDate);
+    List<ManifacturingFurnitureDataModel> GetAllManifacturingByWorkerByPeriod(string workerId, DateTime fromDate, DateTime toDate);
+    List<ManifacturingFurnitureDataModel> GetAllManifacturingByFurnitureByPeriod(string furnitureId, DateTime fromDate, DateTime toDate);
+    ManifacturingFurnitureDataModel GetManifacturingByData(string data);
+    void InsertFurniture(ManifacturingFurnitureDataModel manifacturingDataModel);
+    void UpdateFurniture(ManifacturingFurnitureDataModel manifacturingDataModel);
+}

FurnitureAssembly/FurnitureAssemblyContracts/BusinessLogicsContracts/IPostBusinessLogicContract.cs

@@ -0,0 +1,14 @@
+using FurnitureAssemblyContracts.DataModels;
+
+namespace FurnitureAssemblyContracts.BusinessLogicsContracts;
+
+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);
+}

FurnitureAssembly/FurnitureAssemblyContracts/BusinessLogicsContracts/ISalaryBusinessLogicContract.cs

@@ -0,0 +1,10 @@
+using FurnitureAssemblyContracts.DataModels;
+
+namespace FurnitureAssemblyContracts.BusinessLogicsContracts;
+
+public interface ISalaryBusinessLogicContract
+{
+    List<SalaryDataModel> GetAllSalariesByPeriod(DateTime fromDate, DateTime toDate);
+    List<SalaryDataModel> GetAllSalariesByPeriodByWorker(DateTime fromDate, DateTime toDate, string workerId);
+    void CalculateSalaryByMounth(DateTime date);
+}

FurnitureAssembly/FurnitureAssemblyContracts/BusinessLogicsContracts/IWorkerBusinessLogicContract.cs

@@ -0,0 +1,15 @@
+using FurnitureAssemblyContracts.DataModels;
+
+namespace FurnitureAssemblyContracts.BusinessLogicsContracts;
+
+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);
+}

FurnitureAssembly/FurnitureAssemblyContracts/DataModels/ComponentDataModel.cs

@@ -5,13 +5,13 @@ using FurnitureAssemblyContracts.Infrastructure;
 
 namespace FurnitureAssemblyContracts.DataModels;
 
-public class ComponentDataModel(string id, string name, string? prevName, string? prevPrevName, ComponentType componentType) : IValidation
+public class ComponentDataModel(string id, string name, ComponentType type, string? prevName = null, string? prevPrevName = null) : IValidation
 {
     public string Id { get; private set; } = id;
     public string Name { get; private set; } = name;
     public string? PrevName { get; private set; } = prevName;
     public string? PrevPrevName { get; private set; } = prevPrevName;
-    public ComponentType Type { get; private set; } = componentType;
+    public ComponentType Type { get; private set; } = type;
 
     public void Validate()
     {

FurnitureAssembly/FurnitureAssemblyContracts/DataModels/FurnitureComponentDataModel.cs

@@ -19,7 +19,7 @@ public class FurnitureComponentDataModel(string furnitureId, string componentId,
         if (ComponentId.IsEmpty())
             throw new ValidationException("Field ComponentId is empty");
         if (!ComponentId.IsGuid())
-            throw new ValidationException("The value in the field BlandId is not a unique identifier");
+            throw new ValidationException("The value in the field ComponentId is not a unique identifier");
         if (Count <= 0)
             throw new ValidationException("Field Count is less than or equal to 0");
     }

FurnitureAssembly/FurnitureAssemblyContracts/DataModels/FurnitureDataModel.cs

@@ -4,12 +4,12 @@ using FurnitureAssemblyContracts.Infrastructure;
 
 namespace FurnitureAssemblyContracts.DataModels;
 
-public class FurnitureDataModel(string id, string name, int weight, List<ComponentDataModel> components) : IValidation
+public class FurnitureDataModel(string id, string name, int weight, List<FurnitureComponentDataModel> components) : IValidation
 {
     public string Id { get; private set; } = id;
     public string Name { get; private set; } = name;
     public int Weight { get; private set; } = weight;
-    public List<ComponentDataModel> Components { get; private set; } = components;
+    public List<FurnitureComponentDataModel> Components { get; private set; } = components;
 
     public void Validate()
     {
@@ -18,10 +18,10 @@ public class FurnitureDataModel(string id, string name, int weight, List<Compone
         if (!Id.IsGuid())
             throw new ValidationException("The value in the field Id is not a unique identifier");
         if (Name.IsEmpty())
-            throw new ValidationException("Field FurnitureId is empty");
+            throw new ValidationException("Field Name is empty");
         if (Weight <= 0)
-            throw new ValidationException("Field Count is less than or equal to 0");
+            throw new ValidationException("Field Weight is less than or equal to 0");
         if ((Components?.Count ?? 0) == 0)
-            throw new ValidationException("The sale must include products");
+            throw new ValidationException("The furniture must include Components");
     }
 }

FurnitureAssembly/FurnitureAssemblyContracts/DataModels/ManifacturingFurnitureDataModel.cs

@@ -4,12 +4,12 @@ using FurnitureAssemblyContracts.Infrastructure;
 
 namespace FurnitureAssemblyContracts.DataModels;
 
-public class ManifacturingFurnitureDataModel(string id, string furnitureId, int count, DateTime productuionDate, string workerId) : IValidation
+public class ManifacturingFurnitureDataModel(string id, string furnitureId, int count, string workerId) : IValidation
 {
     public string Id { get; private set; } = id;
     public string FurnitureId { get; private set; } = furnitureId;
     public int Count { get; private set; } = count;
-    public DateTime ProductuionDate { get; private set; } = productuionDate;
+    public DateTime ProductuionDate { get; private set; } = DateTime.UtcNow;
     public string WorkerId { get; private set; } = workerId;
 
     public void Validate()

FurnitureAssembly/FurnitureAssemblyContracts/DataModels/PostDataModel.cs

@@ -5,10 +5,9 @@ using FurnitureAssemblyContracts.Infrastructure;
 
 namespace FurnitureAssemblyContracts.DataModels;
 
-public class PostDataModel(string id, string postId, string postName, PostType postType, double salary, bool isActual, DateTime changeDate) : IValidation
+public class PostDataModel(string postid, string postName, PostType postType, double salary, bool isActual, DateTime changeDate) : IValidation
 {
-    public string Id { get; private set; } = id;
-    public string PostId { get; private set; } = postId;
+    public string Id { get; private set; } = postid;
     public string PostName { get; private set; } = postName;
     public PostType PostType { get; private set; } = postType;
     public double Salary { get; private set; } = salary;
@@ -21,10 +20,6 @@ public class PostDataModel(string id, string postId, string postName, PostType p
             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)

FurnitureAssembly/FurnitureAssemblyContracts/Exceptions/ElementDeletedException.cs

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

FurnitureAssembly/FurnitureAssemblyContracts/Exceptions/ElementExistsException.cs

@@ -0,0 +1,12 @@
+namespace FurnitureAssemblyContracts.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;
+    }
+}

FurnitureAssembly/FurnitureAssemblyContracts/Exceptions/ElementNotFoundException.cs

@@ -0,0 +1,10 @@
+namespace FurnitureAssemblyContracts.Exceptions;
+
+public class ElementNotFoundException : Exception
+{
+    public string Value { get; private set; }
+    public ElementNotFoundException(string value) : base($"Element not found at value = { value }")
+    {
+        Value = value;
+    }
+}

FurnitureAssembly/FurnitureAssemblyContracts/Exceptions/IncorrectDatesException.cs

@@ -0,0 +1,6 @@
+namespace FurnitureAssemblyContracts.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}") { }
+}

FurnitureAssembly/FurnitureAssemblyContracts/Exceptions/NullListException.cs

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

FurnitureAssembly/FurnitureAssemblyContracts/Exceptions/StorageException.cs

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

FurnitureAssembly/FurnitureAssemblyContracts/Extentions/DateTimeExtensions.cs

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

FurnitureAssembly/FurnitureAssemblyContracts/Infrastructure/IConfigurationDatabase.cs

@@ -0,0 +1,7 @@
+namespace FurnitureAssemblyContracts.Infrastructure;
+
+public interface IConfigurationDatabase
+{
+    string ConnectionString { get; }
+}
+

FurnitureAssembly/FurnitureAssemblyContracts/StoragesContracts/IComponentStorageContract.cs

@@ -0,0 +1,14 @@
+using FurnitureAssemblyContracts.DataModels;
+
+namespace FurnitureAssemblyContracts.StoragesContracts;
+
+public interface IComponentStorageContract
+{
+    List<ComponentDataModel> GetList();
+    ComponentDataModel? GetElementById(string id);
+    ComponentDataModel? GetElementByName(string name);
+    ComponentDataModel? GetElementByOldName(string name);
+    void AddElement(ComponentDataModel manufacturerDataModel);
+    void UpdElement(ComponentDataModel manufacturerDataModel);
+    void DelElement(string id);
+}

FurnitureAssembly/FurnitureAssemblyContracts/StoragesContracts/IFurnitureStorageContract.cs

@@ -0,0 +1,13 @@
+using FurnitureAssemblyContracts.DataModels;
+
+namespace FurnitureAssemblyContracts.StoragesContracts;
+
+public interface IFurnitureStorageContract
+{
+    List<FurnitureDataModel> GetList();
+    FurnitureDataModel GetElementById(string id);
+    FurnitureDataModel GetElementByName(string name);
+    void AddElement(FurnitureDataModel furnitureDataModel);
+    void UpdElement(FurnitureDataModel furnitureDataModel);
+    void DelElement(string id);
+}

FurnitureAssembly/FurnitureAssemblyContracts/StoragesContracts/IManifacturingStorageContract.cs

@@ -0,0 +1,11 @@
+using FurnitureAssemblyContracts.DataModels;
+
+namespace FurnitureAssemblyContracts.StoragesContracts;
+
+public interface IManifacturingStorageContract
+{
+    List<ManifacturingFurnitureDataModel> GetList(DateTime? startDate = null, DateTime? endDate = null, string? workerId = null, string? furnitureId = null);
+    ManifacturingFurnitureDataModel? GetElementById(string id);
+    void AddElement(ManifacturingFurnitureDataModel manifacturingFurnitureDataModel);
+    void UpdElement(ManifacturingFurnitureDataModel manifacturingFurnitureDataModel);
+}

FurnitureAssembly/FurnitureAssemblyContracts/StoragesContracts/IPostStorageContract.cs

@@ -0,0 +1,15 @@
+using FurnitureAssemblyContracts.DataModels;
+
+namespace FurnitureAssemblyContracts.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);
+}

FurnitureAssembly/FurnitureAssemblyContracts/StoragesContracts/ISalaryStorageContract.cs

@@ -0,0 +1,9 @@
+using FurnitureAssemblyContracts.DataModels;
+
+namespace FurnitureAssemblyContracts.StoragesContracts;
+
+public interface ISalaryStorageContract
+{
+    List<SalaryDataModel> GetList(DateTime startDate, DateTime endDate, string? workerId = null);
+    void AddElement(SalaryDataModel salaryDataModel);
+}

FurnitureAssembly/FurnitureAssemblyContracts/StoragesContracts/IWorkerStorageContract.cs

@@ -0,0 +1,14 @@
+using FurnitureAssemblyContracts.DataModels;
+
+namespace FurnitureAssemblyContracts.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);
+}

FurnitureAssembly/FurnitureAssemblyDatebase/FurnitureAssemblyDatebase.csproj

@@ -0,0 +1,19 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net9.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="AutoMapper" Version="14.0.0" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="9.0.2" />
+    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="9.0.4" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\FurnitureAssemblyContracts\FurnitureAssemblyContracts.csproj" />
+  </ItemGroup>
+
+</Project>

FurnitureAssembly/FurnitureAssemblyDatebase/FurnitureAssemblyDbContext.cs

@@ -0,0 +1,52 @@
+using FurnitureAssemblyContracts.Infrastructure;
+using FurnitureAssemblyDatebase.Models;
+using Microsoft.EntityFrameworkCore;
+
+namespace FurnitureAssemblyDatebase;
+
+public class FurnitureAssemblyDbContext(IConfigurationDatabase configurationDatabase) : DbContext
+{
+    private readonly IConfigurationDatabase? _configurationDatabase = configurationDatabase;
+
+    protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
+    {
+        optionsBuilder.UseNpgsql(_configurationDatabase?.ConnectionString, o
+        => o.SetPostgresVersion(12, 2));
+        base.OnConfiguring(optionsBuilder);
+    }
+
+    protected override void OnModelCreating(ModelBuilder modelBuilder)
+    {
+        base.OnModelCreating(modelBuilder);
+
+        modelBuilder.Entity<Component>().HasIndex(x => x.Name).IsUnique();
+
+        modelBuilder.Entity<Furniture>().HasIndex(x => x.Name).IsUnique();
+
+        modelBuilder.Entity<Post>()
+            .HasIndex(e => new { e.PostName, e.IsActual })
+            .IsUnique()
+            .HasFilter($"\"{nameof(Post.IsActual)}\" = TRUE");
+
+        modelBuilder.Entity<Post>()
+            .HasIndex(e => new { e.PostId, e.IsActual })
+            .IsUnique()
+            .HasFilter($"\"{nameof(Post.IsActual)}\" = TRUE");
+
+        modelBuilder.Entity<FurnitureComponent>().HasKey(x => new { x.FurnitureId, x.ComponentId });
+
+        modelBuilder.Entity<FurnitureComponent>()
+           .HasOne(fc => fc.Furniture)
+           .WithMany(f => f.Components)
+           .HasForeignKey(fc => fc.FurnitureId)
+           .OnDelete(DeleteBehavior.Restrict);
+    }
+
+    public DbSet<ManifacturingFurniture> Manufacturing { get; set; }
+    public DbSet<Post> Posts { get; set; }
+    public DbSet<Component> Components { get; set; }
+    public DbSet<Salary> Salaries { get; set; }
+    public DbSet<Furniture> Furnitures { get; set; }
+    public DbSet<FurnitureComponent> FurnitureComponents { get; set; }
+    public DbSet<Worker> Workers { get; set; }
+}

FurnitureAssembly/FurnitureAssemblyDatebase/Implementations/ComponentStorageContract.cs

@@ -0,0 +1,159 @@
+using AutoMapper;
+using FurnitureAssemblyContracts.DataModels;
+using FurnitureAssemblyContracts.Exceptions;
+using FurnitureAssemblyContracts.StoragesContracts;
+using FurnitureAssemblyDatebase.Models;
+using Microsoft.EntityFrameworkCore;
+using Npgsql;
+
+namespace FurnitureAssemblyDatebase.Implementations;
+
+public class ComponentStorageContract : IComponentStorageContract
+{
+    private readonly FurnitureAssemblyDbContext _dbContext;
+    private readonly Mapper _mapper;
+
+    public ComponentStorageContract(FurnitureAssemblyDbContext dbContext)
+    {
+        _dbContext = dbContext;
+        var config = new MapperConfiguration(cfg =>
+        {
+            cfg.AddMaps(typeof(Component));
+        });
+        _mapper = new Mapper(config);
+    }
+
+    public List<ComponentDataModel> GetList()
+    {
+        try
+        {
+            return [.. _dbContext.Components.Select(x => _mapper.Map<ComponentDataModel>(x))];
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public ComponentDataModel? GetElementById(string id)
+    {
+        try
+        {
+            return _mapper.Map<ComponentDataModel>(GetComponentById(id));
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public ComponentDataModel? GetElementByName(string name)
+    {
+        try
+        {
+            return _mapper.Map<ComponentDataModel>(_dbContext.Components.FirstOrDefault(x => x.Name == name));
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public ComponentDataModel? GetElementByOldName(string name)
+    {
+        try
+        {
+            return _mapper.Map<ComponentDataModel>(_dbContext.Components.FirstOrDefault(x =>
+                x.PrevName == name || x.PrevPrevName == name));
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public void AddElement(ComponentDataModel manufacturerDataModel)
+    {
+        try
+        {
+            _dbContext.Components.Add(_mapper.Map<Component>(manufacturerDataModel));
+            _dbContext.SaveChanges();
+        }
+        catch (InvalidOperationException ex) when (ex.TargetSite?.Name == "ThrowIdentityConflict")
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new ElementExistsException("Id", manufacturerDataModel.Id);
+        }
+        catch (DbUpdateException ex) when (ex.InnerException is PostgresException { ConstraintName: "IX_Components_Name" })
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new ElementExistsException("Name", manufacturerDataModel.Name);
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public void UpdElement(ComponentDataModel manufacturerDataModel)
+    {
+        try
+        {
+            var element = GetComponentById(manufacturerDataModel.Id) ?? throw new ElementNotFoundException(manufacturerDataModel.Id);
+            if (element.Name != manufacturerDataModel.Name)
+            {
+                element.PrevPrevName = element.PrevName;
+                element.PrevName = element.Name;
+                element.Name = manufacturerDataModel.Name;
+            }
+            if (element.Type != manufacturerDataModel.Type)
+            {
+                element.Type = manufacturerDataModel.Type;
+            }
+            _dbContext.Components.Update(element);
+            _dbContext.SaveChanges();
+        }
+        catch (ElementNotFoundException)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw;
+        }
+        catch (DbUpdateException ex) when (ex.InnerException is PostgresException { ConstraintName: "IX_Components_Name" })
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new ElementExistsException("Name", manufacturerDataModel.Name);
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public void DelElement(string id)
+    {
+        try
+        {
+            var element = GetComponentById(id) ?? throw new ElementNotFoundException(id);
+            _dbContext.Components.Remove(element);
+            _dbContext.SaveChanges();
+        }
+        catch (ElementNotFoundException)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw;
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    private Component? GetComponentById(string id) => _dbContext.Components.FirstOrDefault(x => x.Id == id);
+}

FurnitureAssembly/FurnitureAssemblyDatebase/Implementations/FurnitureStorageContract.cs

@@ -0,0 +1,136 @@
+using AutoMapper;
+using FurnitureAssemblyContracts.DataModels;
+using FurnitureAssemblyContracts.Exceptions;
+using FurnitureAssemblyContracts.StoragesContracts;
+using FurnitureAssemblyDatebase.Models;
+using Microsoft.EntityFrameworkCore;
+using Npgsql;
+
+namespace FurnitureAssemblyDatebase;
+
+public class FurnitureStorageContract : IFurnitureStorageContract
+{
+    private readonly FurnitureAssemblyDbContext _dbContext;
+    private readonly Mapper _mapper;
+
+    public FurnitureStorageContract(FurnitureAssemblyDbContext dbContext)
+    {
+        _dbContext = dbContext;
+        var config = new MapperConfiguration(cfg =>
+        {
+            cfg.CreateMap<Furniture, FurnitureDataModel>();
+            cfg.CreateMap<FurnitureDataModel, Furniture>();
+        });
+        _mapper = new Mapper(config);
+    }
+
+    public List<FurnitureDataModel> GetList()
+    {
+        try
+        {
+            return [.. _dbContext.Furnitures.Select(x => _mapper.Map<FurnitureDataModel>(x))];
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public FurnitureDataModel GetElementById(string id)
+    {
+        try
+        {
+            return _mapper.Map<FurnitureDataModel>(GetFurnitureById(id));
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public FurnitureDataModel GetElementByName(string name)
+    {
+        try
+        {
+            return _mapper.Map<FurnitureDataModel>(_dbContext.Furnitures.FirstOrDefault(x => x.Name == name));
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public void AddElement(FurnitureDataModel furnitureDataModel)
+    {
+        try
+        {
+            _dbContext.Furnitures.Add(_mapper.Map<Furniture>(furnitureDataModel));
+            _dbContext.SaveChanges();
+        }
+        catch (InvalidOperationException ex) when (ex.TargetSite?.Name == "ThrowIdentityConflict")
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new ElementExistsException("Id", furnitureDataModel.Id);
+        }
+        catch (DbUpdateException ex) when (ex.InnerException is PostgresException { ConstraintName: "IX_Furnitures_Name" })
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new ElementExistsException("Name", furnitureDataModel.Name);
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public void UpdElement(FurnitureDataModel furnitureDataModel)
+    {
+        try
+        {
+            var element = GetFurnitureById(furnitureDataModel.Id) ?? throw new ElementNotFoundException(furnitureDataModel.Id);
+            _dbContext.Furnitures.Update(_mapper.Map(furnitureDataModel, element));
+            _dbContext.SaveChanges();
+        }
+        catch (ElementNotFoundException)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw;
+        }
+        catch (DbUpdateException ex) when (ex.InnerException is PostgresException { ConstraintName: "IX_Furnitures_Name" })
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new ElementExistsException("Name", furnitureDataModel.Name);
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public void DelElement(string id)
+    {
+        try
+        {
+            var element = GetFurnitureById(id) ?? throw new ElementNotFoundException(id);
+            _dbContext.Furnitures.Remove(element);
+            _dbContext.SaveChanges();
+        }
+        catch (ElementNotFoundException)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw;
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    private Furniture? GetFurnitureById(string id) => _dbContext.Furnitures.FirstOrDefault(x => x.Id == id);
+}

FurnitureAssembly/FurnitureAssemblyDatebase/Implementations/ManifacturingStorageContract.cs

@@ -0,0 +1,106 @@
+using AutoMapper;
+using FurnitureAssemblyContracts.DataModels;
+using FurnitureAssemblyContracts.Exceptions;
+using FurnitureAssemblyContracts.StoragesContracts;
+using FurnitureAssemblyDatebase.Models;
+using Microsoft.EntityFrameworkCore;
+using Npgsql;
+
+namespace FurnitureAssemblyDatebase.Implementations;
+
+public class ManifacturingStorageContract : IManifacturingStorageContract
+{
+    private readonly FurnitureAssemblyDbContext _dbContext;
+    private readonly Mapper _mapper;
+
+    public ManifacturingStorageContract(FurnitureAssemblyDbContext dbContext)
+    {
+        _dbContext = dbContext;
+        var config = new MapperConfiguration(cfg =>
+        {
+            cfg.CreateMap<ManifacturingFurniture, ManifacturingFurnitureDataModel>();
+            cfg.CreateMap<ManifacturingFurnitureDataModel, ManifacturingFurniture>();
+        });
+        _mapper = new Mapper(config);
+    }
+
+    public List<ManifacturingFurnitureDataModel> GetList(DateTime? startDate = null, DateTime? endDate = null, string? workerId = null, string? furnitureId = null)
+    {
+        try
+        {
+            var query = _dbContext.Manufacturing.AsQueryable();
+            if (startDate is not null && endDate is not null)
+            {
+                query = query.Where(x => x.ProductuionDate >= startDate && x.ProductuionDate < endDate);
+            }
+            if (workerId is not null)
+            {
+                query = query.Where(x => x.WorkerId == workerId);
+            }
+            if (furnitureId is not null)
+            {
+                query = query.Where(x => x.FurnitureId == furnitureId);
+            }
+            return [.. query.Select(x => _mapper.Map<ManifacturingFurnitureDataModel>(x))];
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public ManifacturingFurnitureDataModel? GetElementById(string id)
+    {
+        try
+        {
+            return _mapper.Map<ManifacturingFurnitureDataModel>(GetManifacturingById(id));
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public void AddElement(ManifacturingFurnitureDataModel manifacturingFurnitureDataModel)
+    {
+        try
+        {
+            _dbContext.Manufacturing.Add(_mapper.Map<ManifacturingFurniture>(manifacturingFurnitureDataModel));
+            _dbContext.SaveChanges();
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public void UpdElement(ManifacturingFurnitureDataModel manifacturingFurnitureDataModel)
+    {
+        try
+        {
+            var element = GetManifacturingById(manifacturingFurnitureDataModel.Id) ?? throw new ElementNotFoundException(manifacturingFurnitureDataModel.Id);
+            _dbContext.Manufacturing.Update(_mapper.Map(manifacturingFurnitureDataModel, element));
+            _dbContext.SaveChanges();
+        }
+        catch (ElementNotFoundException)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw;
+        }
+        catch (DbUpdateException ex) when (ex.InnerException is PostgresException { ConstraintName: "IX_Manifacturing_Id" })
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new ElementExistsException("PostId", manifacturingFurnitureDataModel.Id);
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    private ManifacturingFurniture? GetManifacturingById(string id) => _dbContext.Manufacturing.FirstOrDefault(x => x.Id == id);
+}

FurnitureAssembly/FurnitureAssemblyDatebase/Implementations/PostStorageContract.cs

@@ -0,0 +1,192 @@
+using AutoMapper;
+using FurnitureAssemblyContracts.DataModels;
+using FurnitureAssemblyContracts.Exceptions;
+using FurnitureAssemblyContracts.StoragesContracts;
+using FurnitureAssemblyDatebase.Models;
+using Microsoft.EntityFrameworkCore;
+using Npgsql;
+using System.Xml.Linq;
+
+namespace FurnitureAssemblyDatebase.Implementations;
+
+public class PostStorageContract : IPostStorageContract
+{
+    private readonly FurnitureAssemblyDbContext _dbContext;
+    private readonly Mapper _mapper;
+
+    public PostStorageContract(FurnitureAssemblyDbContext dbContext)
+    {
+        _dbContext = dbContext;
+        var config = new MapperConfiguration(cfg =>
+        {
+            cfg.CreateMap<Post, PostDataModel>()
+                .ForMember(x => x.Id, x => x.MapFrom(src => src.PostId));
+            cfg.CreateMap<PostDataModel, Post>()
+                .ForMember(x => x.Id, x => x.Ignore())
+                .ForMember(x => x.PostId, x => x.MapFrom(src => src.Id))
+                .ForMember(x => x.IsActual, x => x.MapFrom(src => true))
+                .ForMember(x => x.ChangeDate, x => x.MapFrom(src => DateTime.UtcNow));
+        });
+        _mapper = new Mapper(config);
+    }
+
+    public List<PostDataModel> GetList(bool onlyActual = true)
+    {
+        try
+        {
+            var query = _dbContext.Posts.AsQueryable();
+            if (onlyActual)
+            {
+                query = query.Where(x => x.IsActual);
+            }
+            return [.. query.Select(x => _mapper.Map<PostDataModel>(x))];
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+
+    }
+
+    public PostDataModel? GetElementById(string id)
+    {
+        try
+        {
+            return _mapper.Map<PostDataModel>(_dbContext.Posts.FirstOrDefault(x => x.PostId == id && x.IsActual));
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public PostDataModel? GetElementByName(string name)
+    {
+        try
+        {
+            return _mapper.Map<PostDataModel>(_dbContext.Posts.FirstOrDefault(x => x.PostName == name && x.IsActual));
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public List<PostDataModel> GetPostWithHistory(string postId)
+    {
+        try
+        {
+            return [.. _dbContext.Posts.Where(x => x.PostId == postId).Select(x => _mapper.Map<PostDataModel>(x))];
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public void AddElement(PostDataModel postDataModel)
+    {
+        try
+        {
+            _dbContext.Posts.Add(_mapper.Map<Post>(postDataModel));
+            _dbContext.SaveChanges();
+        }
+        catch (DbUpdateException ex) when (ex.InnerException is PostgresException { ConstraintName: "IX_Posts_PostName_IsActual" })
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new ElementExistsException("PostName", postDataModel.PostName);
+        }
+        catch (DbUpdateException ex) when (ex.InnerException is PostgresException { ConstraintName: "IX_Posts_PostId_IsActual" })
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new ElementExistsException("PostId", postDataModel.Id);
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public void UpdElement(PostDataModel postDataModel)
+    {
+        try
+        {
+            var transaction = _dbContext.Database.BeginTransaction();
+            try
+            {
+                var element = GetPostById(postDataModel.Id) ?? throw new ElementNotFoundException(postDataModel.Id);
+                if (!element.IsActual)
+                {
+                    throw new ElementDeletedException(postDataModel.Id);
+                }
+                element.IsActual = false;
+                _dbContext.SaveChanges();
+                var newElement = _mapper.Map<Post>(postDataModel);
+                _dbContext.Posts.Add(newElement);
+                _dbContext.SaveChanges();
+                transaction.Commit();
+            }
+            catch
+            {
+                transaction.Rollback();
+                throw;
+            }
+        }
+        catch (DbUpdateException ex) when (ex.InnerException is PostgresException { ConstraintName: "IX_Posts_PostName_IsActual" })
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new ElementExistsException("PostName", postDataModel.PostName);
+        }
+        catch (Exception ex) when (ex is ElementDeletedException || ex is ElementNotFoundException)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw;
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public void DelElement(string id)
+    {
+        try
+        {
+            var element = GetPostById(id) ?? throw new ElementNotFoundException(id);
+            if (!element.IsActual)
+            {
+                throw new ElementDeletedException(id);
+            }
+            element.IsActual = false;
+            _dbContext.SaveChanges();
+        }
+        catch
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw;
+        }
+    }
+
+    public void ResElement(string id)
+    {
+        try
+        {
+            var element = GetPostById(id) ?? throw new ElementNotFoundException(id);
+            element.IsActual = true;
+            _dbContext.SaveChanges();
+        }
+        catch
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw;
+        }
+    }
+
+    private Post? GetPostById(string id) => _dbContext.Posts.Where(x => x.PostId == id).OrderByDescending(x => x.ChangeDate).FirstOrDefault();
+}

FurnitureAssembly/FurnitureAssemblyDatebase/Implementations/SalaryStorageContract.cs

@@ -0,0 +1,56 @@
+using AutoMapper;
+using FurnitureAssemblyContracts.DataModels;
+using FurnitureAssemblyContracts.Exceptions;
+using FurnitureAssemblyContracts.StoragesContracts;
+using FurnitureAssemblyDatebase.Models;
+
+namespace FurnitureAssemblyDatebase.Implementations;
+
+public class SalaryStorageContract : ISalaryStorageContract
+{
+    private readonly FurnitureAssemblyDbContext _dbContext;
+    private readonly Mapper _mapper;
+
+    public SalaryStorageContract(FurnitureAssemblyDbContext dbContext)
+    {
+        _dbContext = dbContext;
+        var config = new MapperConfiguration(cfg =>
+        {
+            cfg.CreateMap<Salary, SalaryDataModel>();
+            cfg.CreateMap<SalaryDataModel, Salary>()
+                .ForMember(dest => dest.WorkerSalary, opt => opt.MapFrom(src => src.Salary));
+        });
+        _mapper = new Mapper(config);
+    }
+    public List<SalaryDataModel> GetList(DateTime startDate, DateTime endDate, string? workerId = null)
+    {
+        try
+        {
+            var query = _dbContext.Salaries.Where(x => x.SalaryDate >= startDate && x.SalaryDate <= endDate);
+            if (workerId is not null)
+            {
+                query = query.Where(x => x.WorkerId == workerId);
+            }
+            return [.. query.Select(x => _mapper.Map<SalaryDataModel>(x))];
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public void AddElement(SalaryDataModel salaryDataModel)
+    {
+        try
+        {
+            _dbContext.Salaries.Add(_mapper.Map<Salary>(salaryDataModel));
+            _dbContext.SaveChanges();
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }   
+}

FurnitureAssembly/FurnitureAssemblyDatebase/Implementations/WorkerStorageContract.cs

@@ -0,0 +1,143 @@
+using AutoMapper;
+using FurnitureAssemblyContracts.DataModels;
+using FurnitureAssemblyContracts.Exceptions;
+using FurnitureAssemblyContracts.StoragesContracts;
+using FurnitureAssemblyDatebase.Models;
+
+namespace FurnitureAssemblyDatebase.Implementations;
+
+public class WorkerStorageContract : IWorkerStorageContract
+{
+    private readonly FurnitureAssemblyDbContext _dbContext;
+    private readonly Mapper _mapper;
+
+    public WorkerStorageContract(FurnitureAssemblyDbContext dbContext)
+    {
+        _dbContext = dbContext;
+        var config = new MapperConfiguration(cfg =>
+        {
+            cfg.CreateMap<Worker, WorkerDataModel>();
+            cfg.CreateMap<WorkerDataModel, Worker>();
+        }); 
+        _mapper = new Mapper(config);
+    }
+
+    public List<WorkerDataModel> GetList(bool onlyActive = true, string? postId = null, DateTime? fromBirthDate = null, DateTime? toBirthDate = null, DateTime? fromEmploymentDate = null, DateTime? toEmploymentDate = null)
+    {
+        try
+        {
+            var query = _dbContext.Workers.AsQueryable();
+            if (onlyActive)
+            {
+                query = query.Where(x => !x.IsDeleted);
+            }
+            if (postId is not null)
+            {
+                query = query.Where(x => x.PostId == postId);
+            }
+            if (fromBirthDate is not null && toBirthDate is not null)
+            {
+                query = query.Where(x => x.BirthDate >= fromBirthDate && x.BirthDate <= toBirthDate);
+            }
+            if (fromEmploymentDate is not null && toEmploymentDate is not null)
+            {
+                query = query.Where(x => x.EmploymentDate >= fromEmploymentDate && x.EmploymentDate <= toEmploymentDate);
+            }
+            return [.. query.Select(x => _mapper.Map<WorkerDataModel>(x))];
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public WorkerDataModel? GetElementById(string id)
+    {
+        try
+        {
+            return _mapper.Map<WorkerDataModel>(GetWorkerById(id));
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public WorkerDataModel? GetElementByFIO(string fio)
+    {
+        try
+        {
+            return
+            _mapper.Map<WorkerDataModel>(_dbContext.Workers.FirstOrDefault(x => x.FIO == fio));
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public void AddElement(WorkerDataModel workerDataModel)
+    {
+        try
+        {
+            _dbContext.Workers.Add(_mapper.Map<Worker>(workerDataModel));
+            _dbContext.SaveChanges();
+        }
+        catch (InvalidOperationException ex) when (ex.TargetSite?.Name == "ThrowIdentityConflict")
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new ElementExistsException("Id", workerDataModel.Id);
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public void UpdElement(WorkerDataModel workerDataModel)
+    {
+        try
+        {
+            var element = GetWorkerById(workerDataModel.Id) ?? throw new ElementNotFoundException(workerDataModel.Id);
+            _dbContext.Workers.Update(_mapper.Map(workerDataModel, element));
+            _dbContext.SaveChanges();
+        }
+        catch (ElementNotFoundException)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw;
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public void DelElement(string id)
+    {
+        try
+        {
+            var element = GetWorkerById(id) ?? throw new
+            ElementNotFoundException(id);
+            element.IsDeleted = true;
+            _dbContext.SaveChanges();
+        }
+        catch (ElementNotFoundException)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw;
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    private Worker? GetWorkerById(string id) => _dbContext.Workers.FirstOrDefault(x => x.Id == id && !x.IsDeleted);
+}

FurnitureAssembly/FurnitureAssemblyDatebase/Models/Component.cs

@@ -0,0 +1,18 @@
+using AutoMapper;
+using FurnitureAssemblyContracts.DataModels;
+using FurnitureAssemblyContracts.Enums;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace FurnitureAssemblyDatebase.Models;
+
+[AutoMap(typeof(ComponentDataModel), ReverseMap = true)]
+public class Component
+{
+    public required string Id { get; set; }
+    public required string Name { get; set; }
+    public string? PrevName { get; set; }    
+    public string? PrevPrevName { get; set; }
+    public required ComponentType Type { get; set; }
+    [ForeignKey("ComponentId")]
+    public List<FurnitureComponent>? FurnitureComponents { get; set; }
+}

FurnitureAssembly/FurnitureAssemblyDatebase/Models/Furniture.cs

@@ -0,0 +1,13 @@
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace FurnitureAssemblyDatebase.Models;
+
+public class Furniture
+{
+    public required string Id { get; set; }
+    public required string Name { get; set; }
+    public int Weight { get; set; }
+    [ForeignKey("FurnitureId")]
+    public List<FurnitureComponent>? Components { get; set; }
+}

FurnitureAssembly/FurnitureAssemblyDatebase/Models/FurnitureComponent.cs

@@ -0,0 +1,10 @@
+namespace FurnitureAssemblyDatebase.Models;
+
+public class FurnitureComponent
+{
+    public required string FurnitureId { get; set; }
+    public required string ComponentId { get; set; }
+    public int Count { get; set; }
+    public Furniture? Furniture { get; set; }
+    public Component? Component { get; set; }
+}

FurnitureAssembly/FurnitureAssemblyDatebase/Models/ManifacturingFurniture.cs

@@ -0,0 +1,12 @@
+namespace FurnitureAssemblyDatebase.Models;
+
+public class ManifacturingFurniture
+{
+    public required string Id { get; set; }
+    public required string FurnitureId { get; set; }
+    public int Count { get; set; }
+    public DateTime ProductuionDate { get; set; }
+    public required string WorkerId { get; set ; }
+    public Furniture? Furniture { get; set; }
+    public Worker? Worker { get; set; }
+}

FurnitureAssembly/FurnitureAssemblyDatebase/Models/Post.cs

@@ -0,0 +1,14 @@
+using FurnitureAssemblyContracts.Enums;
+
+namespace FurnitureAssemblyDatebase.Models;
+
+public class Post
+{
+    public string Id { get; set; } = Guid.NewGuid().ToString();
+    public required string PostId { get; set; }
+    public required string PostName { get; set; }
+    public PostType PostType { get; set; }
+    public double Salary { get; set; }
+    public bool IsActual { get; set; }
+    public DateTime ChangeDate { get; set; }
+}

FurnitureAssembly/FurnitureAssemblyDatebase/Models/Salary.cs

@@ -0,0 +1,10 @@
+namespace FurnitureAssemblyDatebase.Models;
+
+public class Salary
+{
+    public string Id { get; set; } = Guid.NewGuid().ToString();
+    public required string WorkerId { get; set; }
+    public double WorkerSalary { get; set; }
+    public DateTime SalaryDate { get; set; }
+    public Worker? Worker { get; set; }
+}

FurnitureAssembly/FurnitureAssemblyDatebase/Models/Worker.cs

@@ -0,0 +1,19 @@
+using FurnitureAssemblyContracts.Enums;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace FurnitureAssemblyDatebase.Models;
+
+public class Worker
+{
+    public required string Id { get; set; }
+    public required string FIO { get; set; }
+    public required string PostId { get; set; }
+    public DateTime BirthDate { get; set; }
+    public DateTime EmploymentDate { get; set; }
+    public bool IsDeleted { get; set; }
+    public DateTime ChangeDate { get; set; }
+    [ForeignKey("WorkerId")]
+    public List<Salary>? Salaries { get; set; }
+    [ForeignKey("WorkerId")]
+    public List<ManifacturingFurniture>? ManifacturingFurniture { get; set; }
+}

FurnitureAssembly/FurnitureAssemblyTests/BusinessLogicContractsTests/ComponentBusinessLogicContractTests.cs

@@ -0,0 +1,353 @@
+using FurnitureAssemblyBusinessLogic.Implementations;
+using FurnitureAssemblyContracts.BusinessLogicsContracts;
+using FurnitureAssemblyContracts.DataModels;
+using FurnitureAssemblyContracts.Enums;
+using FurnitureAssemblyContracts.Exceptions;
+using FurnitureAssemblyContracts.StoragesContracts;
+using Microsoft.Extensions.Logging;
+using Moq;
+
+namespace FurnitureAssemblyTests.BusinessLogicContractsTests;
+
+[TestFixture]
+internal class ComponentBusinessLogicContractTests
+{
+    private IComponentBusinessLogicContract _componentBusinessLogicContract;
+    private Mock<IComponentStorageContract> _componentStorageContract;
+
+    [OneTimeSetUp]
+    public void OneTimeSetUp()
+    {
+        _componentStorageContract = new Mock<IComponentStorageContract>();
+        _componentBusinessLogicContract = new ComponentBusinessLogicContract(_componentStorageContract.Object, new Mock<ILogger>().Object);
+    }
+
+    [TearDown]
+    public void TearDown()
+    {
+        _componentStorageContract.Reset();
+    }
+
+    [Test]
+    public void GetAllComponents_ReturnListOfRecords_Test()
+    {
+        //Arrange
+        var listOriginal = new List<ComponentDataModel>()
+        { 
+            new(Guid.NewGuid().ToString(), "name 1", ComponentType.Panel),
+            new(Guid.NewGuid().ToString(), "name 2", ComponentType.Panel),
+            new(Guid.NewGuid().ToString(), "name 3", ComponentType.Panel),
+        };
+        _componentStorageContract.Setup(x => x.GetList()).Returns(listOriginal);
+        //Act
+        var list = _componentBusinessLogicContract.GetAllComponents();
+        //Assert
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Is.EquivalentTo(listOriginal));
+    }
+
+    [Test]
+    public void GetAllComponents_ReturnEmptyList_Test()
+    {
+        //Arrange
+        _componentStorageContract.Setup(x => x.GetList()).Returns([]);
+        //Act
+        var list = _componentBusinessLogicContract.GetAllComponents();
+        //Assert
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(0));
+        _componentStorageContract.Verify(x => x.GetList(), Times.Once);
+    }
+
+    [Test]
+    public void GetAllComponents_ReturnNull_ThrowException_Test()
+    {
+        Assert.That(() => _componentBusinessLogicContract.GetAllComponents(), Throws.TypeOf<NullListException>());
+        _componentStorageContract.Verify(x => x.GetList(), Times.Once);
+    }
+
+    [Test]
+    public void GetAllComponents_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _componentStorageContract.Setup(x => x.GetList()).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _componentBusinessLogicContract.GetAllComponents(), Throws.TypeOf<StorageException>());
+        _componentStorageContract.Verify(x => x.GetList(), Times.Once);
+    }
+
+    [Test]
+    public void GetComponentsByData_GetById_ReturnRecord_Test()
+    {
+        //Arrange
+        var id = Guid.NewGuid().ToString();
+        var record = new ComponentDataModel(id, "name", ComponentType.Panel);
+        _componentStorageContract.Setup(x => x.GetElementById(id)).Returns(record);
+        //Act
+        var element = _componentBusinessLogicContract.GetComponentByData(id);
+        //Assert
+        Assert.That(element, Is.Not.Null);
+        Assert.That(element.Id, Is.EqualTo(id));
+        _componentStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetComponentsByData_GetByName_ReturnRecord_Test()
+    {
+        //Arrange
+        var name = "name";
+        var record = new ComponentDataModel(Guid.NewGuid().ToString(), name, ComponentType.Panel);
+        _componentStorageContract.Setup(x => x.GetElementByName(name)).Returns(record);
+        //Act
+        var element = _componentBusinessLogicContract.GetComponentByData(name);
+        //Assert
+        Assert.That(element, Is.Not.Null);
+        Assert.That(element.Name, Is.EqualTo(name));
+        _componentStorageContract.Verify(x => x.GetElementByName(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetComponentsByData_GetByOldName_ReturnRecord_Test()
+    {
+        //Arrange
+        var oldName = "name before";
+        var record = new ComponentDataModel(Guid.NewGuid().ToString(), "name", ComponentType.Panel, oldName);
+        _componentStorageContract.Setup(x => x.GetElementByOldName(oldName)).Returns(record);
+        //Act
+        var element = _componentBusinessLogicContract.GetComponentByData(oldName);
+        //Assert
+        Assert.That(element, Is.Not.Null);
+        Assert.That(element.PrevName, Is.EqualTo(oldName));
+        _componentStorageContract.Verify(x => x.GetElementByName(It.IsAny<string>()), Times.Once);
+        _componentStorageContract.Verify(x => x.GetElementByOldName(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetComponentsByData_EmptyData_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _componentBusinessLogicContract.GetComponentByData(null),
+        Throws.TypeOf<ArgumentNullException>());
+        Assert.That(() => _componentBusinessLogicContract.GetComponentByData(string.Empty),
+        Throws.TypeOf<ArgumentNullException>());
+        _componentStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Never);
+        _componentStorageContract.Verify(x => x.GetElementByName(It.IsAny<string>()), Times.Never);
+        _componentStorageContract.Verify(x => x.GetElementByOldName(It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetComponentsByData_GetById_NotFoundRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _componentBusinessLogicContract.GetComponentByData(Guid.NewGuid().ToString()), Throws.TypeOf<ElementNotFoundException>());
+        _componentStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Once);
+        _componentStorageContract.Verify(x => x.GetElementByName(It.IsAny<string>()), Times.Never);
+        _componentStorageContract.Verify(x => x.GetElementByOldName(It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetComponentsByData_GetByNameOrOldName_NotFoundRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _componentBusinessLogicContract.GetComponentByData("name"), Throws.TypeOf<ElementNotFoundException>());
+        _componentStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Never);
+        _componentStorageContract.Verify(x => x.GetElementByName(It.IsAny<string>()), Times.Once);
+        _componentStorageContract.Verify(x => x.GetElementByOldName(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetComponentsByData_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _componentStorageContract.Setup(x => x.GetElementById(It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+        _componentStorageContract.Setup(x => x.GetElementByName(It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _componentBusinessLogicContract.GetComponentByData(Guid.NewGuid().ToString()), Throws.TypeOf<StorageException>());
+        Assert.That(() => _componentBusinessLogicContract.GetComponentByData("name"), Throws.TypeOf<StorageException>());
+        _componentStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Once);
+        _componentStorageContract.Verify(x => x.GetElementByName(It.IsAny<string>()), Times.Once);
+        _componentStorageContract.Verify(x => x.GetElementByOldName(It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetComponentsByData_GetByOldName_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _componentStorageContract.Setup(x => x.GetElementByOldName(It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _componentBusinessLogicContract.GetComponentByData("name"), Throws.TypeOf<StorageException>());
+        _componentStorageContract.Verify(x => x.GetElementByName(It.IsAny<string>()), Times.Once);
+        _componentStorageContract.Verify(x => x.GetElementByOldName(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void InsertComponents_CorrectRecord_Test()
+    {
+        //Arrange
+        var flag = false;
+        var record = new ComponentDataModel(Guid.NewGuid().ToString(), "name", ComponentType.Panel);
+        _componentStorageContract.Setup(x => x.AddElement(It.IsAny<ComponentDataModel>())).Callback((ComponentDataModel x) =>
+        {
+            flag = x.Id == record.Id && x.Name == record.Name;
+        });
+        //Act
+        _componentBusinessLogicContract.InsertComponent(record);
+        //Assert
+        _componentStorageContract.Verify(x => x.AddElement(It.IsAny<ComponentDataModel>()), Times.Once);
+        Assert.That(flag);
+    }
+
+    [Test]
+    public void InsertComponents_RecordWithExistsData_ThrowException_Test()
+    {
+        //Arrange
+        _componentStorageContract.Setup(x => x.AddElement(It.IsAny<ComponentDataModel>())).Throws(new ElementExistsException("Data", "Data"));
+        //Act&Assert
+        Assert.That(() => _componentBusinessLogicContract.InsertComponent(new(Guid.NewGuid().ToString(), "name", ComponentType.Panel)), Throws.TypeOf<ElementExistsException>());
+        _componentStorageContract.Verify(x => x.AddElement(It.IsAny<ComponentDataModel>()), Times.Once);
+    }
+
+    [Test]
+    public void InsertComponents_NullRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _componentBusinessLogicContract.InsertComponent(null),
+        Throws.TypeOf<ArgumentNullException>());
+        _componentStorageContract.Verify(x => x.AddElement(It.IsAny<ComponentDataModel>()), Times.Never);
+    }
+
+    [Test]
+    public void InsertComponents_InvalidRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _componentBusinessLogicContract.InsertComponent(new ComponentDataModel("id", "name", ComponentType.Panel)), Throws.TypeOf<ValidationException>());
+        _componentStorageContract.Verify(x => x.AddElement(It.IsAny<ComponentDataModel>()), Times.Never);
+    }
+
+    [Test]
+    public void InsertComponents_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _componentStorageContract.Setup(x => x.AddElement(It.IsAny<ComponentDataModel>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _componentBusinessLogicContract.InsertComponent(new(Guid.NewGuid().ToString(), "name", ComponentType.Panel)), Throws.TypeOf<StorageException>());
+        _componentStorageContract.Verify(x => x.AddElement(It.IsAny<ComponentDataModel>()), Times.Once);
+    }
+
+    [Test]
+    public void UpdateComponents_CorrectRecord_Test()
+    {
+        //Arrange
+        var flag = false;
+        var record = new ComponentDataModel(Guid.NewGuid().ToString(), "name", ComponentType.Panel);
+        _componentStorageContract.Setup(x => x.UpdElement(It.IsAny<ComponentDataModel>())).Callback((ComponentDataModel x) =>
+        {
+            flag = x.Id == record.Id && x.Name == record.Name;
+        });
+        //Act
+        _componentBusinessLogicContract.UpdateComponent(record);
+        //Assert
+        _componentStorageContract.Verify(x => x.UpdElement(It.IsAny<ComponentDataModel>()), Times.Once);
+        Assert.That(flag);
+    }
+
+    [Test]
+    public void UpdateComponents_RecordWithIncorrectData_ThrowException_Test()
+    {
+        //Arrange
+        _componentStorageContract.Setup(x => x.UpdElement(It.IsAny<ComponentDataModel>())).Throws(new ElementNotFoundException(""));
+        //Act&Assert
+        Assert.That(() => _componentBusinessLogicContract.UpdateComponent(new(Guid.NewGuid().ToString(), "name", ComponentType.Panel)), Throws.TypeOf<ElementNotFoundException>());
+        _componentStorageContract.Verify(x => x.UpdElement(It.IsAny<ComponentDataModel>()), Times.Once);
+    }
+
+    [Test]
+    public void UpdateComponents_RecordWithExistsData_ThrowException_Test()
+    {
+        //Arrange
+        _componentStorageContract.Setup(x => x.UpdElement(It.IsAny<ComponentDataModel>())).Throws(new ElementExistsException("Data", "Data"));
+        //Act&Assert
+        Assert.That(() => _componentBusinessLogicContract.UpdateComponent(new(Guid.NewGuid().ToString(), "name", ComponentType.Panel)), Throws.TypeOf<ElementExistsException>());
+        _componentStorageContract.Verify(x => x.UpdElement(It.IsAny<ComponentDataModel>()), Times.Once);
+    }
+
+    [Test]
+    public void UpdateComponents_NullRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _componentBusinessLogicContract.UpdateComponent(null),Throws.TypeOf<ArgumentNullException>());
+        _componentStorageContract.Verify(x => x.UpdElement(It.IsAny<ComponentDataModel>()), Times.Never);
+    }
+
+    [Test]
+    public void UpdateComponents_InvalidRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _componentBusinessLogicContract.UpdateComponent(new ComponentDataModel("id", "name", ComponentType.Panel)), Throws.TypeOf<ValidationException>());
+        _componentStorageContract.Verify(x => x.UpdElement(It.IsAny<ComponentDataModel>()), Times.Never);
+    }
+
+    [Test]
+    public void UpdateComponents_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _componentStorageContract.Setup(x => x.UpdElement(It.IsAny<ComponentDataModel>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _componentBusinessLogicContract.UpdateComponent(new(Guid.NewGuid().ToString(), "name", ComponentType.Panel)), Throws.TypeOf<StorageException>());
+        _componentStorageContract.Verify(x => x.UpdElement(It.IsAny<ComponentDataModel>()), Times.Once);
+    }
+
+    [Test]
+    public void DeleteComponents_CorrectRecord_Test()
+    {
+        //Arrange
+        var id = Guid.NewGuid().ToString();
+        var flag = false;
+        _componentStorageContract.Setup(x => x.DelElement(It.Is((string x) => x == id))).Callback(() => { flag = true; });
+        //Act
+        _componentBusinessLogicContract.DeleteComponent(id);
+        //Assert
+        _componentStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Once); Assert.That(flag);
+    }
+
+    [Test]
+    public void DeleteComponents_RecordWithIncorrectId_ThrowException_Test()
+    {
+        //Arrange
+        var id = Guid.NewGuid().ToString();
+        _componentStorageContract.Setup(x => x.DelElement(It.IsAny<string>())).Throws(new ElementNotFoundException(id));
+        //Act&Assert
+        Assert.That(() => _componentBusinessLogicContract.DeleteComponent(Guid.NewGuid().ToString()),
+        Throws.TypeOf<ElementNotFoundException>());
+        _componentStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void DeleteComponents_IdIsNullOrEmpty_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _componentBusinessLogicContract.DeleteComponent(null), Throws.TypeOf<ArgumentNullException>());
+        Assert.That(() => _componentBusinessLogicContract.DeleteComponent(string.Empty), Throws.TypeOf<ArgumentNullException>());
+        _componentStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void DeleteComponents_IdIsNotGuid_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _componentBusinessLogicContract.DeleteComponent("id"),
+        Throws.TypeOf<ValidationException>());
+        _componentStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void DeleteComponents_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _componentStorageContract.Setup(x => x.DelElement(It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _componentBusinessLogicContract.DeleteComponent(Guid.NewGuid().ToString()),
+        Throws.TypeOf<StorageException>());
+        _componentStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Once);
+    }
+}

FurnitureAssembly/FurnitureAssemblyTests/BusinessLogicContractsTests/FurnitureBusinessLogicContractTests.cs

@@ -0,0 +1,328 @@
+using FurnitureAssemblyBusinessLogic.Implementations;
+using FurnitureAssemblyContracts.BusinessLogicsContracts;
+using FurnitureAssemblyContracts.DataModels;
+using FurnitureAssemblyContracts.Exceptions;
+using FurnitureAssemblyContracts.StoragesContracts;
+using Microsoft.Extensions.Logging;
+using Moq;
+
+namespace FurnitureAssemblyTests.BusinessLogicContractsTests;
+
+public class FurnitureBusinessLogicContractTests
+{
+    private IFurnitureBusinessLogicContract _furnitureBusinessLogicContract;
+    private Mock<IFurnitureStorageContract> _furnitureStorageContract;
+
+    [OneTimeSetUp]
+    public void OneTimeSetUp()
+    {
+        _furnitureStorageContract = new Mock<IFurnitureStorageContract>();
+        _furnitureBusinessLogicContract = new FurnitureBusinessLogicContract(_furnitureStorageContract.Object, new Mock<ILogger>().Object);
+    }
+
+    [TearDown]
+    public void TearDown()
+    {
+        _furnitureStorageContract.Reset();
+    }
+
+    [Test]
+    public void GetAllFurnitures_ReturnListOfRecords_Test()
+    {
+        //Arrange
+        var listOriginal = new List<FurnitureDataModel>()
+        {
+            new(Guid.NewGuid().ToString(), "name 1", 10, []),
+            new(Guid.NewGuid().ToString(), "name 2", 10, []),
+            new(Guid.NewGuid().ToString(), "name 3", 10, []),
+        };
+        _furnitureStorageContract.Setup(x => x.GetList()).Returns(listOriginal);
+        //Act
+        var list = _furnitureBusinessLogicContract.GetAllFurnitures();
+        //Assert
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Is.EquivalentTo(listOriginal));
+    }
+
+    [Test]
+    public void GetAllFurnitures_ReturnEmptyList_Test()
+    {
+        //Arrange
+        _furnitureStorageContract.Setup(x => x.GetList()).Returns([]);
+        //Act
+        var list = _furnitureBusinessLogicContract.GetAllFurnitures();
+        //Assert
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(0));
+        _furnitureStorageContract.Verify(x => x.GetList(), Times.Once);
+    }
+
+    [Test]
+    public void GetAllFurnitures_ReturnNull_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _furnitureBusinessLogicContract.GetAllFurnitures(), Throws.TypeOf<NullListException>());
+        _furnitureStorageContract.Verify(x => x.GetList(), Times.Once);
+    }
+
+    [Test]
+    public void GetAllFurnitures_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _furnitureStorageContract.Setup(x => x.GetList()).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _furnitureBusinessLogicContract.GetAllFurnitures(),Throws.TypeOf<StorageException>());
+        _furnitureStorageContract.Verify(x => x.GetList(), Times.Once);
+    }
+
+    [Test]
+    public void GetFurnituresByData_GetById_ReturnRecord_Test()
+    {
+        //Arrange
+        var id = Guid.NewGuid().ToString();
+        var record = new FurnitureDataModel(id, "name", 10, []);
+        _furnitureStorageContract.Setup(x =>
+        x.GetElementById(id)).Returns(record);
+        //Act
+        var element =
+        _furnitureBusinessLogicContract.GetFurnitureByData(id);
+        //Assert
+        Assert.That(element, Is.Not.Null);
+        Assert.That(element.Id, Is.EqualTo(id));
+        _furnitureStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetFurnituresByData_GetByName_ReturnRecord_Test()
+    {
+        //Arrange
+        var manufacturerName = "name";
+        var record = new FurnitureDataModel(Guid.NewGuid().ToString(), manufacturerName, 10, []);
+        _furnitureStorageContract.Setup(x => x.GetElementByName(manufacturerName)).Returns(record);
+        //Act
+        var element = _furnitureBusinessLogicContract.GetFurnitureByData(manufacturerName);
+        //Assert
+        Assert.That(element, Is.Not.Null);
+        Assert.That(element.Name, Is.EqualTo(manufacturerName));
+        _furnitureStorageContract.Verify(x => x.GetElementByName(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetFurnituresByData_EmptyData_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _furnitureBusinessLogicContract.GetFurnitureByData(null), Throws.TypeOf<ArgumentNullException>());
+        Assert.That(() => _furnitureBusinessLogicContract.GetFurnitureByData(string.Empty), Throws.TypeOf<ArgumentNullException>());
+        _furnitureStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Never);
+        _furnitureStorageContract.Verify(x => x.GetElementByName(It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetFurnituresByData__GetById_NotFoundRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _furnitureBusinessLogicContract.GetFurnitureByData(Guid.NewGuid().ToString()), Throws.TypeOf<ElementNotFoundException>());
+        _furnitureStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Once);
+        _furnitureStorageContract.Verify(x => x.GetElementByName(It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetFurnituresByData_GetByName_NotFoundRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _furnitureBusinessLogicContract.GetFurnitureByData("name"), Throws.TypeOf<ElementNotFoundException>());
+        _furnitureStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Never);
+        _furnitureStorageContract.Verify(x => x.GetElementByName(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetFurnituresByData_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _furnitureStorageContract.Setup(x => x.GetElementById(It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+        _furnitureStorageContract.Setup(x => x.GetElementByName(It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _furnitureBusinessLogicContract.GetFurnitureByData(Guid.NewGuid().ToString()), Throws.TypeOf<StorageException>());
+        Assert.That(() => _furnitureBusinessLogicContract.GetFurnitureByData("name"), Throws.TypeOf<StorageException>());
+        _furnitureStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Once);
+        _furnitureStorageContract.Verify(x => x.GetElementByName(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void InsertFurnitures_CorrectRecord_Test()
+    {
+        //Arrange
+        var flag = false;
+        var record = new FurnitureDataModel(Guid.NewGuid().ToString(), "name", 10, [new FurnitureComponentDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 5)]);
+        _furnitureStorageContract.Setup(x => x.AddElement(It.IsAny<FurnitureDataModel>())).Callback((FurnitureDataModel x) =>
+        {
+            flag = x.Id == record.Id && x.Name == record.Name;
+        });
+        //Act
+        _furnitureBusinessLogicContract.InsertFurniture(record);
+        //Assert
+        _furnitureStorageContract.Verify(x => x.AddElement(It.IsAny<FurnitureDataModel>()), Times.Once); 
+        Assert.That(flag);
+    }
+
+    [Test]
+    public void InsertFurnitures_RecordWithExistsData_ThrowException_Test()
+    {
+        //Arrange
+        _furnitureStorageContract.Setup(x => x.AddElement(It.IsAny<FurnitureDataModel>())).Throws(new ElementExistsException("Data", "Data"));
+        //Act&Assert
+        Assert.That(() => _furnitureBusinessLogicContract.InsertFurniture(new(Guid.NewGuid().ToString(), "name", 10, 
+            [new FurnitureComponentDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 5)])), Throws.TypeOf<ElementExistsException>());
+        _furnitureStorageContract.Verify(x => x.AddElement(It.IsAny<FurnitureDataModel>()), Times.Once);
+    }
+
+    [Test]
+    public void InsertFurnitures_NullRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _furnitureBusinessLogicContract.InsertFurniture(null),
+        Throws.TypeOf<ArgumentNullException>());
+        _furnitureStorageContract.Verify(x => x.AddElement(It.IsAny<FurnitureDataModel>()), Times.Never);
+    }
+
+    [Test]
+    public void InsertFurnitures_InvalidRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _furnitureBusinessLogicContract.InsertFurniture(new FurnitureDataModel("id", "name", 10, [])), Throws.TypeOf<ValidationException>());
+        _furnitureStorageContract.Verify(x => x.AddElement(It.IsAny<FurnitureDataModel>()), Times.Never);
+    }
+
+    [Test]
+    public void InsertFurnitures_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _furnitureStorageContract.Setup(x => x.AddElement(It.IsAny<FurnitureDataModel>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _furnitureBusinessLogicContract.InsertFurniture(new(Guid.NewGuid().ToString(), "name", 10, 
+            [new FurnitureComponentDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 5)])), Throws.TypeOf<StorageException>());
+        _furnitureStorageContract.Verify(x => x.AddElement(It.IsAny<FurnitureDataModel>()), Times.Once);
+    }
+
+    [Test]
+    public void UpdateFurnitures_CorrectRecord_Test()
+    {
+        //Arrange
+        var flag = false;
+        var record = new FurnitureDataModel(Guid.NewGuid().ToString(), "name", 10, [new FurnitureComponentDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 5)]);
+        _furnitureStorageContract.Setup(x => x.UpdElement(It.IsAny<FurnitureDataModel>())).Callback((FurnitureDataModel x) =>
+        {
+            flag = x.Id == record.Id && x.Name == record.Name;
+        });
+        //Act
+        _furnitureBusinessLogicContract.UpdateFurniture(record);
+        //Assert
+        _furnitureStorageContract.Verify(x => x.UpdElement(It.IsAny<FurnitureDataModel>()), Times.Once);
+        Assert.That(flag);
+    }
+
+    [Test]
+    public void UpdateFurnitures_RecordWithIncorrectData_ThrowException_Test()
+    {
+        //Arrange
+        _furnitureStorageContract.Setup(x => x.UpdElement(It.IsAny<FurnitureDataModel>())).Throws(new ElementNotFoundException(""));
+        //Act&Assert
+        Assert.That(() => _furnitureBusinessLogicContract.UpdateFurniture(new(Guid.NewGuid().ToString(), "name", 10, 
+            [new FurnitureComponentDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 5)])), Throws.TypeOf<ElementNotFoundException>());
+        _furnitureStorageContract.Verify(x => x.UpdElement(It.IsAny<FurnitureDataModel>()), Times.Once);
+    }
+
+    [Test]
+    public void UpdateFurnitures_RecordWithExistsData_ThrowException_Test()
+    {
+        //Arrange
+        _furnitureStorageContract.Setup(x => x.UpdElement(It.IsAny<FurnitureDataModel>())).Throws(new ElementExistsException("Data", "Data"));
+        //Act&Assert
+        Assert.That(() => _furnitureBusinessLogicContract.UpdateFurniture(new(Guid.NewGuid().ToString(), "name", 10, 
+            [new FurnitureComponentDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 5)])), Throws.TypeOf<ElementExistsException>());
+        _furnitureStorageContract.Verify(x => x.UpdElement(It.IsAny<FurnitureDataModel>()), Times.Once);
+    }
+
+    [Test]
+    public void UpdateFurnitures_NullRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _furnitureBusinessLogicContract.UpdateFurniture(null), Throws.TypeOf<ArgumentNullException>());
+        _furnitureStorageContract.Verify(x => x.UpdElement(It.IsAny<FurnitureDataModel>()), Times.Never);
+    }
+
+    [Test]
+    public void UpdateFurnitures_InvalidRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _furnitureBusinessLogicContract.UpdateFurniture(new FurnitureDataModel("id", "name", 10, 
+            [new FurnitureComponentDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 5)])), Throws.TypeOf<ValidationException>());
+        _furnitureStorageContract.Verify(x => x.UpdElement(It.IsAny<FurnitureDataModel>()), Times.Never);
+    }
+
+    [Test]
+    public void UpdateFurnitures_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _furnitureStorageContract.Setup(x => x.UpdElement(It.IsAny<FurnitureDataModel>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _furnitureBusinessLogicContract.UpdateFurniture(new(Guid.NewGuid().ToString(), "name", 10, 
+            [new FurnitureComponentDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(),5)])), Throws.TypeOf<StorageException>());
+        _furnitureStorageContract.Verify(x => x.UpdElement(It.IsAny<FurnitureDataModel>()), Times.Once);
+    }
+
+    [Test]
+    public void DeleteFurnitures_CorrectRecord_Test()
+    {
+        //Arrange
+        var id = Guid.NewGuid().ToString();
+        var flag = false;
+        _furnitureStorageContract.Setup(x => x.DelElement(It.Is((string x) => x == id))).Callback(() => { flag = true; });
+        //Act
+        _furnitureBusinessLogicContract.DeleteFurniture(id);
+        //Assert
+        _furnitureStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Once); Assert.That(flag);
+    }
+
+    [Test]
+    public void DeleteFurnitures_RecordWithIncorrectId_ThrowException_Test()
+    {
+        //Arrange
+        var id = Guid.NewGuid().ToString();
+        _furnitureStorageContract.Setup(x => x.DelElement(It.IsAny<string>())).Throws(new ElementNotFoundException(id));
+        //Act&Assert
+        Assert.That(() => _furnitureBusinessLogicContract.DeleteFurniture(Guid.NewGuid().ToString()),
+        Throws.TypeOf<ElementNotFoundException>());
+        _furnitureStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void DeleteFurnitures_IdIsNullOrEmpty_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _furnitureBusinessLogicContract.DeleteFurniture(null), Throws.TypeOf<ArgumentNullException>());
+        Assert.That(() => _furnitureBusinessLogicContract.DeleteFurniture(string.Empty), Throws.TypeOf<ArgumentNullException>());
+        _furnitureStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Never);
+    }
+
+
+    [Test]
+    public void DeleteFurnitures_IdIsNotGuid_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _furnitureBusinessLogicContract.DeleteFurniture("id"),
+        Throws.TypeOf<ValidationException>());
+        _furnitureStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void DeleteFurnitures_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _furnitureStorageContract.Setup(x => x.DelElement(It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _furnitureBusinessLogicContract.DeleteFurniture(Guid.NewGuid().ToString()),
+        Throws.TypeOf<StorageException>());
+        _furnitureStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Once);
+    }
+}

FurnitureAssembly/FurnitureAssemblyTests/BusinessLogicContractsTests/ManifacturingBusinessLogicContractTests.cs

@@ -0,0 +1,429 @@
+using FurnitureAssemblyBusinessLogic.Implementations;
+using FurnitureAssemblyContracts.BusinessLogicsContracts;
+using FurnitureAssemblyContracts.DataModels;
+using FurnitureAssemblyContracts.Exceptions;
+using FurnitureAssemblyContracts.StoragesContracts;
+using Microsoft.Extensions.Logging;
+using Moq;
+
+namespace FurnitureAssemblyTests.BusinessLogicContractsTests;
+
+internal class ManifacturingBusinessLogicContractTests
+{
+    private IManifacturingBusinessLogicContract _manifacturingBusinessLogicContract;
+    private Mock<IManifacturingStorageContract> _manifacturingStorageContract;
+
+    [OneTimeSetUp]
+    public void OneTimeSetUp()
+    {
+        _manifacturingStorageContract = new Mock<IManifacturingStorageContract>();
+        _manifacturingBusinessLogicContract = new ManifacturingBusinessLogicContract(_manifacturingStorageContract.Object, new Mock<ILogger>().Object);
+    }
+
+    [TearDown]
+    public void TearDown()
+    {
+        _manifacturingStorageContract.Reset();
+    }
+
+    [Test]
+    public void GetAllManifacturingByPeriod_ReturnListOfRecords_Test()
+    {
+        //Arrange
+        var date = DateTime.UtcNow;
+        var listOriginal = new List<ManifacturingFurnitureDataModel>()
+        {
+            new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 10, Guid.NewGuid().ToString()),
+            new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 12, Guid.NewGuid().ToString()),
+            new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 15, Guid.NewGuid().ToString()),
+        };
+        _manifacturingStorageContract.Setup(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>())).Returns(listOriginal);
+        //Act
+        var list = _manifacturingBusinessLogicContract.GetManifacturingByPeriod(date, date.AddDays(1));
+        //Assert
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Is.EquivalentTo(listOriginal));
+        _manifacturingStorageContract.Verify(x => x.GetList(date, date.AddDays(1), null, null), Times.Once);
+    }
+
+    [Test]
+    public void GetAllManifacturingByPeriod_ReturnEmptyList_Test()
+    {
+        //Arrange
+        _manifacturingStorageContract.Setup(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>())).Returns([]);
+        //Act
+        var list = _manifacturingBusinessLogicContract.GetManifacturingByPeriod(DateTime.UtcNow, DateTime.UtcNow.AddDays(1));
+        //Assert
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(0));
+        _manifacturingStorageContract.Verify(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetAllManifacturingByPeriod_IncorrectDates_ThrowException_Test()
+    {
+        //Arrange
+        var date = DateTime.UtcNow;
+        //Act&Assert
+        Assert.That(() => _manifacturingBusinessLogicContract.GetManifacturingByPeriod(date, date), Throws.TypeOf<IncorrectDatesException>());
+        Assert.That(() => _manifacturingBusinessLogicContract.GetManifacturingByPeriod(date, date.AddSeconds(-1)), Throws.TypeOf<IncorrectDatesException>());
+        _manifacturingStorageContract.Verify(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetAllManifacturingByPeriod_ReturnNull_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _manifacturingBusinessLogicContract.GetManifacturingByPeriod(DateTime.UtcNow, DateTime.UtcNow.AddDays(1)), Throws.TypeOf<NullListException>());
+        _manifacturingStorageContract.Verify(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetAllManifacturingByPeriod_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _manifacturingStorageContract.Setup(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>()))
+                                     .Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _manifacturingBusinessLogicContract.GetManifacturingByPeriod(DateTime.UtcNow, DateTime.UtcNow.AddDays(1)), Throws.TypeOf<StorageException>());
+        _manifacturingStorageContract.Verify(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetAllManifacturingByWorkerByPeriod_ReturnListOfRecords_Test()
+    {
+        //Arrange
+        var date = DateTime.UtcNow;
+        var workerId = Guid.NewGuid().ToString();
+        var listOriginal = new List<ManifacturingFurnitureDataModel>()
+        {
+            new(Guid.NewGuid().ToString(), null, 10, Guid.NewGuid().ToString()),
+            new(Guid.NewGuid().ToString(), null, 15, Guid.NewGuid().ToString()),
+            new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 10, Guid.NewGuid().ToString()),
+        };
+        _manifacturingStorageContract.Setup(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>())).Returns(listOriginal);
+        //Act
+        var list = _manifacturingBusinessLogicContract.GetAllManifacturingByWorkerByPeriod(workerId, date, date.AddDays(1));
+        //Assert
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Is.EquivalentTo(listOriginal));
+        _manifacturingStorageContract.Verify(x => x.GetList(date, date.AddDays(1), workerId, null), Times.Once);
+    }
+
+    [Test]
+    public void GetAllManifacturingByWorkerByPeriod_ReturnEmptyList_Test()
+    {
+        //Arrange
+        _manifacturingStorageContract.Setup(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>())).Returns([]);
+        //Act
+        var list = _manifacturingBusinessLogicContract.GetAllManifacturingByWorkerByPeriod(Guid.NewGuid().ToString(), DateTime.UtcNow, DateTime.UtcNow.AddDays(1));
+        //Assert
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(0));
+        _manifacturingStorageContract.Verify(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetAllManifacturingByWorkerByPeriod_IncorrectDates_ThrowException_Test()
+    {
+        //Arrange
+        var date = DateTime.UtcNow;
+        //Act&Assert
+        Assert.That(() => _manifacturingBusinessLogicContract.GetAllManifacturingByWorkerByPeriod(Guid.NewGuid().ToString(), date, date), Throws.TypeOf<IncorrectDatesException>());
+        Assert.That(() =>
+        _manifacturingBusinessLogicContract.GetAllManifacturingByWorkerByPeriod(Guid.NewGuid().ToString(), date, date.AddSeconds(-1)), Throws.TypeOf<IncorrectDatesException>());
+        _manifacturingStorageContract.Verify(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetAllManifacturingByWorkerByPeriod_WorkerIdIsNullOrEmpty_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _manifacturingBusinessLogicContract.GetAllManifacturingByWorkerByPeriod(null, DateTime.UtcNow, DateTime.UtcNow.AddDays(1)), Throws.TypeOf<ArgumentNullException>());
+        Assert.That(() => _manifacturingBusinessLogicContract.GetAllManifacturingByWorkerByPeriod(string.Empty, DateTime.UtcNow, DateTime.UtcNow.AddDays(1)), Throws.TypeOf<ArgumentNullException>());
+        _manifacturingStorageContract.Verify(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetAllManifacturingByWorkerByPeriod_WorkerIdIsNotGuid_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _manifacturingBusinessLogicContract.GetAllManifacturingByWorkerByPeriod("workerId", DateTime.UtcNow, DateTime.UtcNow.AddDays(1)), Throws.TypeOf<ValidationException>());
+        _manifacturingStorageContract.Verify(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetAllManifacturingByWorkerByPeriod_ReturnNull_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() =>
+        _manifacturingBusinessLogicContract.GetAllManifacturingByWorkerByPeriod(Guid.NewGuid().ToString(), DateTime.UtcNow, DateTime.UtcNow.AddDays(1)), Throws.TypeOf<NullListException>());
+        _manifacturingStorageContract.Verify(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetAllManifacturingByWorkerByPeriod_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _manifacturingStorageContract.Setup(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>()))
+                                     .Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _manifacturingBusinessLogicContract.GetAllManifacturingByWorkerByPeriod(Guid.NewGuid().ToString(), DateTime.UtcNow, DateTime.UtcNow.AddDays(1)),Throws.TypeOf<StorageException>());
+        _manifacturingStorageContract.Verify(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetAllManifacturingByFurnitureByPeriod_ReturnListOfRecords_Test()
+    {
+        //Arrange
+        var date = DateTime.UtcNow;
+        var furnitureId = Guid.NewGuid().ToString();
+        var listOriginal = new List<ManifacturingFurnitureDataModel>()
+        {
+            new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 10, null),
+            new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 15, null),
+            new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 10, Guid.NewGuid().ToString())
+        };
+        _manifacturingStorageContract.Setup(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>())).Returns(listOriginal);
+        //Act
+        var list = _manifacturingBusinessLogicContract.GetAllManifacturingByFurnitureByPeriod(furnitureId, date, date.AddDays(1));
+        //Assert
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Is.EquivalentTo(listOriginal));
+        _manifacturingStorageContract.Verify(x => x.GetList(date, date.AddDays(1), null, furnitureId), Times.Once);
+    }
+
+    [Test]
+    public void GetAllManifacturingByFurnitureByPeriod_ReturnEmptyList_Test()
+    {
+        //Arrange
+        _manifacturingStorageContract.Setup(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>())).Returns([]);
+        //Act
+        var list = _manifacturingBusinessLogicContract.GetAllManifacturingByFurnitureByPeriod(Guid.NewGuid().ToString(), DateTime.UtcNow, DateTime.UtcNow.AddDays(1));
+        //Assert
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(0));
+        _manifacturingStorageContract.Verify(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetAllManifacturingByFurnitureByPeriod_IncorrectDates_ThrowException_Test()
+    {
+        //Arrange
+        var date = DateTime.UtcNow;
+        //Act&Assert
+        Assert.That(() => _manifacturingBusinessLogicContract.GetAllManifacturingByFurnitureByPeriod(Guid.NewGuid().ToString(), date, date), Throws.TypeOf<IncorrectDatesException>());
+        Assert.That(() => _manifacturingBusinessLogicContract.GetAllManifacturingByFurnitureByPeriod(Guid.NewGuid().ToString(), date, date.AddSeconds(-1)), Throws.TypeOf<IncorrectDatesException>());
+        _manifacturingStorageContract.Verify(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetAllManifacturingByFurnitureByPeriod_BuyerIdIsNullOrEmpty_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _manifacturingBusinessLogicContract.GetAllManifacturingByFurnitureByPeriod(null, DateTime.UtcNow, DateTime.UtcNow.AddDays(1)), Throws.TypeOf<ArgumentNullException>());
+        Assert.That(() =>
+        _manifacturingBusinessLogicContract.GetAllManifacturingByFurnitureByPeriod(string.Empty, DateTime.UtcNow, DateTime.UtcNow.AddDays(1)), Throws.TypeOf<ArgumentNullException>());
+        _manifacturingStorageContract.Verify(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetAllManifacturingByFurnitureByPeriod_BuyerIdIsNotGuid_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _manifacturingBusinessLogicContract.GetAllManifacturingByFurnitureByPeriod("buyerId", DateTime.UtcNow, DateTime.UtcNow.AddDays(1)), Throws.TypeOf<ValidationException>());
+        _manifacturingStorageContract.Verify(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetAllManifacturingByFurnitureByPeriod_ReturnNull_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _manifacturingBusinessLogicContract.GetAllManifacturingByFurnitureByPeriod(Guid.NewGuid().ToString(), DateTime.UtcNow, DateTime.UtcNow.AddDays(1)), 
+                                                                                                    Throws.TypeOf<NullListException>());
+        _manifacturingStorageContract.Verify(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetAllManifacturingByFurnitureByPeriod_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _manifacturingStorageContract.Setup(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>()))
+                                     .Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _manifacturingBusinessLogicContract.GetAllManifacturingByFurnitureByPeriod(Guid.NewGuid().ToString(), DateTime.UtcNow, DateTime.UtcNow.AddDays(1)), 
+                                                                                                    Throws.TypeOf<StorageException>());
+        _manifacturingStorageContract.Verify(x => x.GetList(It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<string>(), It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetManifacturingByData_GetById_ReturnRecord_Test()
+    {
+        //Arrange
+        var id = Guid.NewGuid().ToString();
+        var record = new ManifacturingFurnitureDataModel(id, Guid.NewGuid().ToString(),10, Guid.NewGuid().ToString());
+        _manifacturingStorageContract.Setup(x => x.GetElementById(id)).Returns(record);
+        //Act
+        var element = _manifacturingBusinessLogicContract.GetManifacturingByData(id);
+        //Assert
+        Assert.That(element, Is.Not.Null);
+        Assert.That(element.Id, Is.EqualTo(id));
+        _manifacturingStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetManifacturingByData_EmptyData_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _manifacturingBusinessLogicContract.GetManifacturingByData(null), Throws.TypeOf<ArgumentNullException>());
+        Assert.That(() => _manifacturingBusinessLogicContract.GetManifacturingByData(string.Empty), Throws.TypeOf<ArgumentNullException>());
+        _manifacturingStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetManifacturingByData_IdIsNotGuid_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _manifacturingBusinessLogicContract.GetManifacturingByData("manId"), Throws.TypeOf<ValidationException>());
+        _manifacturingStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetManifacturingByData_GetById_NotFoundRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _manifacturingBusinessLogicContract.GetManifacturingByData(Guid.NewGuid().ToString()), Throws.TypeOf<ElementNotFoundException>());
+        _manifacturingStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetManifacturingByData_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _manifacturingStorageContract.Setup(x => x.GetElementById(It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _manifacturingBusinessLogicContract.GetManifacturingByData(Guid.NewGuid().ToString()), Throws.TypeOf<StorageException>());
+        _manifacturingStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void InsertManifacturing_CorrectRecord_Test()
+    {
+        //Arrange
+        var flag = false;
+        var record = new ManifacturingFurnitureDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 10, Guid.NewGuid().ToString());
+        _manifacturingStorageContract.Setup(x => x.AddElement(It.IsAny<ManifacturingFurnitureDataModel>())).Callback((ManifacturingFurnitureDataModel x) =>
+        {
+            flag = x.Id == record.Id && x.WorkerId == record.WorkerId && x.FurnitureId == record.FurnitureId &&
+                   x.ProductuionDate == record.ProductuionDate && x.Count == record.Count;
+        });
+        //Act
+        _manifacturingBusinessLogicContract.InsertFurniture(record);
+        //Assert
+        _manifacturingStorageContract.Verify(x => x.AddElement(It.IsAny<ManifacturingFurnitureDataModel>()), Times.Once);
+        Assert.That(flag);
+    }
+
+    [Test]
+    public void InsertManifacturing_RecordWithExistsData_ThrowException_Test()
+    {
+        //Arrange
+        _manifacturingStorageContract.Setup(x => x.AddElement(It.IsAny<ManifacturingFurnitureDataModel>())).Throws(new ElementExistsException("Data", "Data"));
+        //Act&Assert
+        Assert.That(() => _manifacturingBusinessLogicContract.InsertFurniture(new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 10, Guid.NewGuid().ToString())), Throws.TypeOf<ElementExistsException>());
+        _manifacturingStorageContract.Verify(x => x.AddElement(It.IsAny<ManifacturingFurnitureDataModel>()), Times.Once);
+    }
+
+    [Test]
+    public void InsertManifacturing_NullRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _manifacturingBusinessLogicContract.InsertFurniture(null), Throws.TypeOf<ArgumentNullException>());
+        _manifacturingStorageContract.Verify(x => x.AddElement(It.IsAny<ManifacturingFurnitureDataModel>()), Times.Never);
+    }
+
+    [Test]
+    public void InsertManifacturing_InvalidRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _manifacturingBusinessLogicContract.InsertFurniture(new
+        ManifacturingFurnitureDataModel("id", Guid.NewGuid().ToString(), 10, Guid.NewGuid().ToString())), Throws.TypeOf<ValidationException>());
+        _manifacturingStorageContract.Verify(x => x.AddElement(It.IsAny<ManifacturingFurnitureDataModel>()), Times.Never);
+    }
+
+    [Test]
+    public void InsertManifacturing_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _manifacturingStorageContract.Setup(x => x.AddElement(It.IsAny<ManifacturingFurnitureDataModel>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _manifacturingBusinessLogicContract.InsertFurniture(new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 10, Guid.NewGuid().ToString())),
+            Throws.TypeOf<StorageException>());
+        _manifacturingStorageContract.Verify(x => x.AddElement(It.IsAny<ManifacturingFurnitureDataModel>()), Times.Once);
+    }
+
+    public void UpdateManifacturing_CorrectRecord_Test()
+    {
+        //Arrange
+        var flag = false;
+        var record = new ManifacturingFurnitureDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 10, Guid.NewGuid().ToString());
+        _manifacturingStorageContract.Setup(x => x.UpdElement(It.IsAny<ManifacturingFurnitureDataModel>())).Callback((ManifacturingFurnitureDataModel x) =>
+        {
+            flag = x.Id == record.Id && x.WorkerId == record.WorkerId && x.FurnitureId == record.FurnitureId &&
+                   x.ProductuionDate == record.ProductuionDate && x.Count == record.Count;
+        });
+        //Act
+        _manifacturingBusinessLogicContract.UpdateFurniture(record);
+        //Assert
+        _manifacturingStorageContract.Verify(x => x.UpdElement(It.IsAny<ManifacturingFurnitureDataModel>()), Times.Once);
+        Assert.That(flag);
+    }
+
+    [Test]
+    public void UpdateManifacturing_RecordWithIncorrectData_ThrowException_Test()
+    {
+        //Arrange
+        _manifacturingStorageContract.Setup(x => x.UpdElement(It.IsAny<ManifacturingFurnitureDataModel>())).Throws(new ElementNotFoundException(""));
+        //Act&Assert
+        Assert.That(() => _manifacturingBusinessLogicContract.UpdateFurniture(new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 10, Guid.NewGuid().ToString())),
+            Throws.TypeOf<ElementNotFoundException>());
+        _manifacturingStorageContract.Verify(x => x.UpdElement(It.IsAny<ManifacturingFurnitureDataModel>()), Times.Once);
+    }
+
+    [Test]
+    public void UpdateManifacturing_RecordWithExistsData_ThrowException_Test()
+    {
+        //Arrange
+        _manifacturingStorageContract.Setup(x => x.UpdElement(It.IsAny<ManifacturingFurnitureDataModel>())).Throws(new ElementExistsException("Data", "Data"));
+        //Act&Assert
+        Assert.That(() => _manifacturingBusinessLogicContract.UpdateFurniture(new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 10, Guid.NewGuid().ToString())),
+            Throws.TypeOf<ElementExistsException>());
+        _manifacturingStorageContract.Verify(x => x.UpdElement(It.IsAny<ManifacturingFurnitureDataModel>()), Times.Once);
+    }
+
+    [Test]
+    public void UpdateManifacturing_NullRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _manifacturingBusinessLogicContract.UpdateFurniture(null), Throws.TypeOf<ArgumentNullException>());
+        _manifacturingStorageContract.Verify(x => x.UpdElement(It.IsAny<ManifacturingFurnitureDataModel>()), Times.Never);
+    }
+
+    [Test]
+    public void UpdateManifacturing_InvalidRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _manifacturingBusinessLogicContract.UpdateFurniture(new ManifacturingFurnitureDataModel("id", Guid.NewGuid().ToString(), 10, Guid.NewGuid().ToString())), Throws.TypeOf<ValidationException>());
+        _manifacturingStorageContract.Verify(x => x.UpdElement(It.IsAny<ManifacturingFurnitureDataModel>()), Times.Never);
+    }
+
+    [Test]
+    public void UpdateManifacturing_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _manifacturingStorageContract.Setup(x => x.UpdElement(It.IsAny<ManifacturingFurnitureDataModel>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _manifacturingBusinessLogicContract.UpdateFurniture(new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 10, Guid.NewGuid().ToString())), Throws.TypeOf<StorageException>());
+        _manifacturingStorageContract.Verify(x => x.UpdElement(It.IsAny<ManifacturingFurnitureDataModel>()), Times.Once);
+    }
+}

FurnitureAssembly/FurnitureAssemblyTests/BusinessLogicContractsTests/PostBusinessLogicContractTests.cs

@@ -0,0 +1,433 @@
+using FurnitureAssemblyBusinessLogic.Implementations;
+using FurnitureAssemblyContracts.DataModels;
+using FurnitureAssemblyContracts.Enums;
+using FurnitureAssemblyContracts.Exceptions;
+using FurnitureAssemblyContracts.StoragesContracts;
+using Microsoft.Extensions.Logging;
+using Moq;
+
+namespace FurnitureAssemblyTests.BusinessLogicContractsTests;
+
+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);
+    }
+
+    [TearDown]
+    public void TearDown()
+    {
+        _postStorageContract.Reset();
+    }
+
+    [Test]
+    public void GetAllPosts_ReturnListOfRecords_Test()
+    {
+        //Arrange
+        var listOriginal = new List<PostDataModel>()
+        {
+            new(Guid.NewGuid().ToString(),"name 1", PostType.Builder, 10, true, DateTime.UtcNow),
+            new(Guid.NewGuid().ToString(), "name 2", PostType.Builder, 10, false, DateTime.UtcNow),
+            new(Guid.NewGuid().ToString(), "name 3", PostType.Builder, 10, 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.Builder, 10, true, DateTime.UtcNow),
+            new(postId, "name 2", PostType.Builder, 10, 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.Builder, 10, 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.Builder, 10, 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.Builder, 10, true, DateTime.UtcNow.AddDays(-1));
+        _postStorageContract.Setup(x => x.AddElement(It.IsAny<PostDataModel>()))
+            .Callback((PostDataModel x) =>
+            {
+                flag = x.Id == record.Id && x.PostName == record.PostName && x.PostType == record.PostType && x.Salary == record.Salary && x.ChangeDate == record.ChangeDate;
+            });
+
+        //Act
+        _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.Builder, 10, true, DateTime.UtcNow)), Throws.TypeOf<ElementExistsException>());
+        _postStorageContract.Verify(x => x.AddElement(It.IsAny<PostDataModel>()), Times.Once);
+    }
+
+    [Test]
+    public void InsertPost_NullRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _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.Builder, 10, true, DateTime.UtcNow)), Throws.TypeOf<ValidationException>());
+        _postStorageContract.Verify(x => x.AddElement(It.IsAny<PostDataModel>()), Times.Never);
+    }
+
+    [Test]
+    public void InsertPost_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _postStorageContract.Setup(x => x.AddElement(It.IsAny<PostDataModel>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _postBusinessLogicContract.InsertPost(new(Guid.NewGuid().ToString(), "name", PostType.Builder, 10, true, DateTime.UtcNow)), Throws.TypeOf<StorageException>());
+        _postStorageContract.Verify(x => x.AddElement(It.IsAny<PostDataModel>()), Times.Once);
+    }
+
+    [Test]
+    public void UpdatePost_CorrectRecord_Test()
+    {
+        //Arrange
+        var flag = false;
+        var record = new PostDataModel(Guid.NewGuid().ToString(), "name", PostType.Builder, 10, true, DateTime.UtcNow.AddDays(-1));
+        _postStorageContract.Setup(x => x.UpdElement(It.IsAny<PostDataModel>())).Callback((PostDataModel x) =>
+        {
+            flag = x.Id == record.Id && x.PostName == record.PostName && x.PostType == record.PostType && x.Salary == record.Salary && x.ChangeDate == record.ChangeDate;
+        });
+        //Act
+        _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.Builder, 10, true, DateTime.UtcNow)), Throws.TypeOf<ElementNotFoundException>());
+        _postStorageContract.Verify(x => x.UpdElement(It.IsAny<PostDataModel>()), Times.Once);
+    }
+
+    [Test]
+    public void UpdatePost_RecordWithExistsData_ThrowException_Test()
+    {
+        //Arrange
+        _postStorageContract.Setup(x => x.UpdElement(It.IsAny<PostDataModel>())).Throws(new ElementExistsException("Data", "Data"));
+        //Act&Assert
+        Assert.That(() => _postBusinessLogicContract.UpdatePost(new(Guid.NewGuid().ToString(), "anme", PostType.Builder, 10, true, DateTime.UtcNow)), Throws.TypeOf<ElementExistsException>());
+        _postStorageContract.Verify(x => x.UpdElement(It.IsAny<PostDataModel>()), Times.Once);
+    }
+
+    [Test]
+    public void UpdatePost_NullRecord_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _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.Builder, 10, true, DateTime.UtcNow)), Throws.TypeOf<ValidationException>());
+        _postStorageContract.Verify(x => x.UpdElement(It.IsAny<PostDataModel>()), Times.Never);
+    }
+
+    [Test]
+    public void UpdatePost_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _postStorageContract.Setup(x => x.UpdElement(It.IsAny<PostDataModel>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _postBusinessLogicContract.UpdatePost(new(Guid.NewGuid().ToString(), "name", PostType.Builder, 10, true, DateTime.UtcNow)), Throws.TypeOf<StorageException>());
+        _postStorageContract.Verify(x => x.UpdElement(It.IsAny<PostDataModel>()), Times.Once);
+    }
+
+    [Test]
+    public void DeletePost_CorrectRecord_Test()
+    {
+        //Arrange
+        var id = Guid.NewGuid().ToString();
+        var flag = false;
+        _postStorageContract.Setup(x => x.DelElement(It.Is((string x) => x == id))).Callback(() => { flag = true; });
+        //Act
+        _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 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);
+    }
+}

FurnitureAssembly/FurnitureAssemblyTests/BusinessLogicContractsTests/SalaryBuisnessLogicContractTests.cs

@@ -0,0 +1,345 @@
+using FurnitureAssemblyBusinessLogic.Implementations;
+using FurnitureAssemblyContracts.DataModels;
+using FurnitureAssemblyContracts.Enums;
+using FurnitureAssemblyContracts.Exceptions;
+using FurnitureAssemblyContracts.StoragesContracts;
+using Microsoft.Extensions.Logging;
+using Moq;
+
+namespace FurnitureAssemblyTests.BusinessLogicContractsTests;
+
+internal class SalaryBuisnessLogicContractTests
+{
+    private SalaryBusinessLogicContract _salaryBusinessLogicContract;
+    private Mock<ISalaryStorageContract> _salaryStorageContract;
+    private Mock<IManifacturingStorageContract> _manifacturingStorageContract;
+    private Mock<IPostStorageContract> _postStorageContract;
+    private Mock<IWorkerStorageContract> _workerStorageContract;
+
+    [OneTimeSetUp]
+    public void OneTimeSetUp()
+    {
+        _salaryStorageContract = new Mock<ISalaryStorageContract>();
+        _manifacturingStorageContract = new Mock<IManifacturingStorageContract>();
+        _postStorageContract = new Mock<IPostStorageContract>();
+        _workerStorageContract = new Mock<IWorkerStorageContract>();
+        _salaryBusinessLogicContract = new SalaryBusinessLogicContract(_salaryStorageContract.Object,
+            _manifacturingStorageContract.Object, _postStorageContract.Object, _workerStorageContract.Object, new Mock<ILogger>().Object);
+    }
+
+    [TearDown]
+    public void TearDown()
+    {
+        _salaryStorageContract.Reset();
+        _manifacturingStorageContract.Reset();
+        _postStorageContract.Reset();
+        _workerStorageContract.Reset();
+    }
+
+    [Test]
+    public void GetAllSalaries_ReturnListOfRecords_Test()
+    {
+        //Arrange
+        var startDate = DateTime.UtcNow;
+        var endDate = DateTime.UtcNow.AddDays(1);
+        var listOriginal = new List<SalaryDataModel>()
+        {
+            new(Guid.NewGuid().ToString(), DateTime.UtcNow, 10),
+            new(Guid.NewGuid().ToString(), DateTime.UtcNow.AddDays(1), 14),
+            new(Guid.NewGuid().ToString(), DateTime.UtcNow.AddDays(-1), 30),
+        };
+        _salaryStorageContract.Setup(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>())).Returns(listOriginal);
+        //Act
+        var list = _salaryBusinessLogicContract.GetAllSalariesByPeriod(startDate, endDate);
+        //Assert
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Is.EquivalentTo(listOriginal));
+        _salaryStorageContract.Verify(x => x.GetList(startDate, endDate, null), Times.Once);
+    }
+
+    [Test]
+    public void GetAllSalaries_ReturnEmptyList_Test()
+    {
+        //Arrange
+        _salaryStorageContract.Setup(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>())).Returns([]);
+        //Act
+        var list = _salaryBusinessLogicContract.GetAllSalariesByPeriod(DateTime.UtcNow, DateTime.UtcNow.AddDays(1));
+        //Assert
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(0));
+        _salaryStorageContract.Verify(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetAllSalaries_IncorrectDates_ThrowException_Test()
+    {
+        //Arrange
+        var dateTime = DateTime.UtcNow;
+        //Act&Assert
+        Assert.That(() => _salaryBusinessLogicContract.GetAllSalariesByPeriod(dateTime, dateTime), Throws.TypeOf<IncorrectDatesException>());
+        Assert.That(() => _salaryBusinessLogicContract.GetAllSalariesByPeriod(dateTime, dateTime.AddSeconds(-1)), Throws.TypeOf<IncorrectDatesException>());
+        _salaryStorageContract.Verify(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetAllSalaries_ReturnNull_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _salaryBusinessLogicContract.GetAllSalariesByPeriod(DateTime.UtcNow, DateTime.UtcNow.AddDays(1)), Throws.TypeOf<NullListException>());
+        _salaryStorageContract.Verify(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetAllSalaries_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _salaryStorageContract.Setup(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _salaryBusinessLogicContract.GetAllSalariesByPeriod(DateTime.UtcNow, DateTime.UtcNow.AddDays(1)), Throws.TypeOf<StorageException>());
+        _salaryStorageContract.Verify(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetAllSalariesByWorker_ReturnListOfRecords_Test()
+    {
+        //Arrange
+        var startDate = DateTime.UtcNow;
+        var endDate = DateTime.UtcNow.AddDays(1);
+        var workerId = Guid.NewGuid().ToString();
+        var listOriginal = new List<SalaryDataModel>()
+        {
+            new(Guid.NewGuid().ToString(), DateTime.UtcNow, 10),
+            new(Guid.NewGuid().ToString(), DateTime.UtcNow.AddDays(1), 14),
+            new(Guid.NewGuid().ToString(), DateTime.UtcNow.AddDays(-1), 30),
+        };
+        _salaryStorageContract.Setup(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>())).Returns(listOriginal);
+        //Act
+        var list = _salaryBusinessLogicContract.GetAllSalariesByPeriodByWorker(startDate, endDate, workerId);
+        //Assert
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Is.EquivalentTo(listOriginal));
+        _salaryStorageContract.Verify(x => x.GetList(startDate, endDate, workerId), Times.Once);
+    }
+
+    [Test]
+    public void GetAllSalariesByWorker_ReturnEmptyList_Test()
+    {
+        //Arrange
+        _salaryStorageContract.Setup(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>())).Returns([]);
+        //Act
+        var list = _salaryBusinessLogicContract.GetAllSalariesByPeriodByWorker(DateTime.UtcNow, DateTime.UtcNow.AddDays(1), Guid.NewGuid().ToString());
+        //Assert
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(0));
+        _salaryStorageContract.Verify(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetAllSalariesByWorker_IncorrectDates_ThrowException_Test()
+    {
+        //Arrange
+        var dateTime = DateTime.UtcNow;
+        //Act&Assert
+        Assert.That(() => _salaryBusinessLogicContract.GetAllSalariesByPeriodByWorker(dateTime, dateTime, Guid.NewGuid().ToString()), Throws.TypeOf<IncorrectDatesException>());
+        Assert.That(() => _salaryBusinessLogicContract.GetAllSalariesByPeriodByWorker(dateTime, dateTime.AddSeconds(-1), Guid.NewGuid().ToString()), Throws.TypeOf<IncorrectDatesException>());
+        _salaryStorageContract.Verify(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetAllSalariesByWorker_WorkerIdIsNUllOrEmpty_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _salaryBusinessLogicContract.GetAllSalariesByPeriodByWorker(DateTime.UtcNow, DateTime.UtcNow.AddDays(1), null), Throws.TypeOf<ArgumentNullException>());
+        Assert.That(() => _salaryBusinessLogicContract.GetAllSalariesByPeriodByWorker(DateTime.UtcNow, DateTime.UtcNow.AddDays(1), string.Empty), Throws.TypeOf<ArgumentNullException>());
+        _salaryStorageContract.Verify(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetAllSalariesByWorker_WorkerIdIsNotGuid_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _salaryBusinessLogicContract.GetAllSalariesByPeriodByWorker(DateTime.UtcNow, DateTime.UtcNow.AddDays(1), "workerId"), Throws.TypeOf<ValidationException>());
+        _salaryStorageContract.Verify(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void GetAllSalariesByWorker_ReturnNull_ThrowException_Test()
+    {
+        //Act&Assert
+        Assert.That(() => _salaryBusinessLogicContract.GetAllSalariesByPeriodByWorker(DateTime.UtcNow, DateTime.UtcNow.AddDays(1), Guid.NewGuid().ToString()), Throws.TypeOf<NullListException>());
+        _salaryStorageContract.Verify(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void GetAllSalariesByWorker_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _salaryStorageContract.Setup(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _salaryBusinessLogicContract.GetAllSalariesByPeriodByWorker(DateTime.UtcNow, DateTime.UtcNow.AddDays(1), Guid.NewGuid().ToString()), Throws.TypeOf<StorageException>());
+        _salaryStorageContract.Verify(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>()), Times.Once);
+    }
+
+    [Test]
+    public void CalculateSalaryByMounth_CalculateSalary_Test()
+    {
+        //Arrange
+        var workerId = Guid.NewGuid().ToString();
+        var saleSum = 200;
+        var postSalary = 2000;
+        _manifacturingStorageContract.Setup(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>(), It.IsAny<string>()))
+            .Returns([new ManifacturingFurnitureDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), saleSum, workerId)]);
+        _postStorageContract.Setup(x => x.GetElementById(It.IsAny<string>()))
+            .Returns(new PostDataModel(Guid.NewGuid().ToString(), "name", PostType.Builder, postSalary, true, DateTime.UtcNow));
+        _workerStorageContract.Setup(x => x.GetList(It.IsAny<bool>(), It.IsAny<string?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>()))
+            .Returns([new WorkerDataModel(workerId, "Test", Guid.NewGuid().ToString(), DateTime.UtcNow, DateTime.UtcNow, false)]);
+        var sum = 0.0;
+        var expectedSum = postSalary + saleSum * 0.1;
+        _salaryStorageContract.Setup(x => x.AddElement(It.IsAny<SalaryDataModel>()))
+            .Callback((SalaryDataModel x) =>
+            {
+                sum = x.Salary;
+            });
+        //Act
+        _salaryBusinessLogicContract.CalculateSalaryByMounth(DateTime.UtcNow);
+        //Assert
+        Assert.That(sum, Is.EqualTo(expectedSum));
+    }
+
+    [Test]
+    public void CalculateSalaryByMounth_WithSeveralWorkers_Test()
+    {
+        //Arrange
+        var worker1Id = Guid.NewGuid().ToString();
+        var worker2Id = Guid.NewGuid().ToString();
+        var worker3Id = Guid.NewGuid().ToString();
+        var list = new List<WorkerDataModel>() {
+            new(worker1Id, "Test", Guid.NewGuid().ToString(), DateTime.UtcNow, DateTime.UtcNow, false),
+            new(worker2Id, "Test", Guid.NewGuid().ToString(), DateTime.UtcNow, DateTime.UtcNow, false),
+            new(worker3Id, "Test", Guid.NewGuid().ToString(), DateTime.UtcNow, DateTime.UtcNow, false)
+        };
+        _manifacturingStorageContract.Setup(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>(), It.IsAny<string>()))
+            .Returns([new ManifacturingFurnitureDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 10, worker1Id),
+            new ManifacturingFurnitureDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 10, worker1Id),
+            new ManifacturingFurnitureDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 10, worker2Id),
+            new ManifacturingFurnitureDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 10, worker3Id),
+            new ManifacturingFurnitureDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 10, worker3Id)]);
+        _postStorageContract.Setup(x => x.GetElementById(It.IsAny<string>()))
+            .Returns(new PostDataModel(Guid.NewGuid().ToString(), "name", PostType.Builder, 2000, true, DateTime.UtcNow));
+        _workerStorageContract.Setup(x => x.GetList(It.IsAny<bool>(), It.IsAny<string?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>()))
+            .Returns(list);
+        //Act
+        _salaryBusinessLogicContract.CalculateSalaryByMounth(DateTime.UtcNow);
+        //Assert
+        _salaryStorageContract.Verify(x => x.AddElement(It.IsAny<SalaryDataModel>()), Times.Exactly(list.Count));
+    }
+
+    [Test]
+    public void CalculateSalaryByMounth_WithoitSalesByWorker_Test()
+    {
+        //Arrange
+        var postSalary = 2000.0;
+        var workerId = Guid.NewGuid().ToString();
+        _manifacturingStorageContract.Setup(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>(), It.IsAny<string>()))
+            .Returns([]);
+        _postStorageContract.Setup(x => x.GetElementById(It.IsAny<string>()))
+            .Returns(new PostDataModel(Guid.NewGuid().ToString(), "name", PostType.Builder, postSalary, true, DateTime.UtcNow));
+        _workerStorageContract.Setup(x => x.GetList(It.IsAny<bool>(), It.IsAny<string?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>()))
+            .Returns([new WorkerDataModel(workerId, "Test", Guid.NewGuid().ToString(), DateTime.UtcNow, DateTime.UtcNow, false)]);
+        var sum = 0.0;
+        var expectedSum = postSalary;
+        _salaryStorageContract.Setup(x => x.AddElement(It.IsAny<SalaryDataModel>()))
+            .Callback((SalaryDataModel x) =>
+            {
+                sum = x.Salary;
+            });
+        //Act
+        _salaryBusinessLogicContract.CalculateSalaryByMounth(DateTime.UtcNow);
+        //Assert
+        Assert.That(sum, Is.EqualTo(expectedSum));
+    }
+
+    [Test]
+    public void CalculateSalaryByMounth_SaleStorageReturnNull_ThrowException_Test()
+    {
+        //Arrange
+        var workerId = Guid.NewGuid().ToString();
+        _postStorageContract.Setup(x => x.GetElementById(It.IsAny<string>()))
+            .Returns(new PostDataModel(Guid.NewGuid().ToString(), "name", PostType.Builder, 2000, true, DateTime.UtcNow));
+        _workerStorageContract.Setup(x => x.GetList(It.IsAny<bool>(), It.IsAny<string?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>()))
+            .Returns([new WorkerDataModel(workerId, "Test", Guid.NewGuid().ToString(), DateTime.UtcNow, DateTime.UtcNow, false)]);
+        //Act&Assert
+        Assert.That(() => _salaryBusinessLogicContract.CalculateSalaryByMounth(DateTime.UtcNow), Throws.TypeOf<NullListException>());
+    }
+
+    [Test]
+    public void CalculateSalaryByMounth_PostStorageReturnNull_ThrowException_Test()
+    {
+        //Arrange
+        var workerId = Guid.NewGuid().ToString();
+        _manifacturingStorageContract.Setup(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>(), It.IsAny<string>()))
+            .Returns([new ManifacturingFurnitureDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 10, workerId)]);
+        _workerStorageContract.Setup(x => x.GetList(It.IsAny<bool>(), It.IsAny<string?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>()))
+            .Returns([new WorkerDataModel(workerId, "Test", Guid.NewGuid().ToString(), DateTime.UtcNow, DateTime.UtcNow, false)]);
+        //Act&Assert
+        Assert.That(() => _salaryBusinessLogicContract.CalculateSalaryByMounth(DateTime.UtcNow), Throws.TypeOf<NullListException>());
+    }
+
+    [Test]
+    public void CalculateSalaryByMounth_WorkerStorageReturnNull_ThrowException_Test()
+    {
+        //Arrange
+        var workerId = Guid.NewGuid().ToString();
+        _manifacturingStorageContract.Setup(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>(), It.IsAny<string>()))
+            .Returns([new ManifacturingFurnitureDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 10, workerId)]);
+        _postStorageContract.Setup(x => x.GetElementById(It.IsAny<string>()))
+            .Returns(new PostDataModel(Guid.NewGuid().ToString(), "name", PostType.Builder, 2000, true, DateTime.UtcNow));
+        //Act&Assert
+        Assert.That(() => _salaryBusinessLogicContract.CalculateSalaryByMounth(DateTime.UtcNow), Throws.TypeOf<NullListException>());
+    }
+
+    [Test]
+    public void CalculateSalaryByMounth_SaleStorageThrowException_ThrowException_Test()
+    {
+        //Arrange
+        var workerId = Guid.NewGuid().ToString();
+        _manifacturingStorageContract.Setup(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>(), It.IsAny<string>()))
+            .Throws(new StorageException(new InvalidOperationException()));
+        _postStorageContract.Setup(x => x.GetElementById(It.IsAny<string>()))
+            .Returns(new PostDataModel(Guid.NewGuid().ToString(), "name", PostType.Builder, 2000, true, DateTime.UtcNow));
+        _workerStorageContract.Setup(x => x.GetList(It.IsAny<bool>(), It.IsAny<string?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>()))
+            .Returns([new WorkerDataModel(workerId, "Test", Guid.NewGuid().ToString(), DateTime.UtcNow, DateTime.UtcNow, false)]);
+        //Act&Assert
+        Assert.That(() => _salaryBusinessLogicContract.CalculateSalaryByMounth(DateTime.UtcNow), Throws.TypeOf<StorageException>());
+    }
+
+    [Test]
+    public void CalculateSalaryByMounth_PostStorageThrowException_ThrowException_Test()
+    {
+        //Arrange
+        var workerId = Guid.NewGuid().ToString();
+        _manifacturingStorageContract.Setup(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>(), It.IsAny<string>()))
+            .Returns([new ManifacturingFurnitureDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 10, workerId)]);
+        _postStorageContract.Setup(x => x.GetElementById(It.IsAny<string>()))
+            .Throws(new StorageException(new InvalidOperationException()));
+        _workerStorageContract.Setup(x => x.GetList(It.IsAny<bool>(), It.IsAny<string?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>()))
+            .Returns([new WorkerDataModel(workerId, "Test", Guid.NewGuid().ToString(), DateTime.UtcNow, DateTime.UtcNow, false)]);
+        //Act&Assert
+        Assert.That(() => _salaryBusinessLogicContract.CalculateSalaryByMounth(DateTime.UtcNow), Throws.TypeOf<StorageException>());
+    }
+
+    [Test]
+    public void CalculateSalaryByMounth_WorkerStorageThrowException_ThrowException_Test()
+    {
+        //Arrange
+        var workerId = Guid.NewGuid().ToString();
+        _manifacturingStorageContract.Setup(x => x.GetList(It.IsAny<DateTime>(), It.IsAny<DateTime>(), It.IsAny<string>(), It.IsAny<string>()))
+            .Returns([new ManifacturingFurnitureDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 10, workerId)]);
+        _postStorageContract.Setup(x => x.GetElementById(It.IsAny<string>()))
+            .Returns(new PostDataModel(Guid.NewGuid().ToString(), "name", PostType.Builder, 2000, true, DateTime.UtcNow));
+        _workerStorageContract.Setup(x => x.GetList(It.IsAny<bool>(), It.IsAny<string?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>(), It.IsAny<DateTime?>()))
+            .Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _salaryBusinessLogicContract.CalculateSalaryByMounth(DateTime.UtcNow), Throws.TypeOf<StorageException>());
+    }
+}

FurnitureAssembly/FurnitureAssemblyTests/BusinessLogicContractsTests/WorkerBusinessLogicContractTests.cs

@@ -0,0 +1,556 @@
+using FurnitureAssemblyBusinessLogic.Implementations;
+using FurnitureAssemblyContracts.DataModels;
+using FurnitureAssemblyContracts.Exceptions;
+using FurnitureAssemblyContracts.StoragesContracts;
+using Microsoft.Extensions.Logging;
+using Moq;
+
+namespace FurnitureAssemblyTests.BusinessLogicContractsTests;
+
+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);
+    }
+
+    [TearDown]
+    public void TearDown()
+    {
+        _workerStorageContract.Reset();
+    }
+
+    [Test]
+    public void GetAllWorkers_ReturnListOfRecords_Test()
+    {
+        //Arrange
+        var listOriginal = new List<WorkerDataModel>()
+        {
+            new(Guid.NewGuid().ToString(), "Иванов И.И.1", Guid.NewGuid().ToString(), DateTime.Now.AddYears(-16).AddDays(-1), DateTime.Now, false),
+            new(Guid.NewGuid().ToString(), "Иванов И.И.2", Guid.NewGuid().ToString(), DateTime.Now.AddYears(-16).AddDays(-1), DateTime.Now, true),
+            new(Guid.NewGuid().ToString(), "Иванов И.И.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(), "Иванов И.И.1", Guid.NewGuid().ToString(), DateTime.Now.AddYears(-16).AddDays(-1), DateTime.Now, false),
+            new(Guid.NewGuid().ToString(), "Иванов И.И.2", Guid.NewGuid().ToString(), DateTime.Now.AddYears(-16).AddDays(-1), DateTime.Now, true),
+            new(Guid.NewGuid().ToString(), "Иванов И.И.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()
+    {
+        //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.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(), "Иванов И.И.1", Guid.NewGuid().ToString(), DateTime.Now.AddYears(-16).AddDays(-1), DateTime.Now, false),
+            new(Guid.NewGuid().ToString(), "Иванов И.И.2", Guid.NewGuid().ToString(), DateTime.Now.AddYears(-16).AddDays(-1), DateTime.Now, true),
+            new(Guid.NewGuid().ToString(), "Иванов И.И.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(), "Иванов И.И.1", Guid.NewGuid().ToString(), DateTime.Now.AddYears(-16).AddDays(-1), DateTime.Now, false),
+            new(Guid.NewGuid().ToString(), "Иванов И.И.2", Guid.NewGuid().ToString(), DateTime.Now.AddYears(-16).AddDays(-1), DateTime.Now, true),
+            new(Guid.NewGuid().ToString(), "Иванов И.И.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, "Иванов И.И.", 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 = "Иванов И.И.";
+        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("Иванов И.И."), 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("Иванов И.И."), 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(), "Иванов И.И.", 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(), "Иванов И.И.", Guid.NewGuid().ToString(), DateTime.Now.AddYears(-14).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", "Иванов И.И.", 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(), "Иванов И.И.", 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(), "Иванов И.И.", 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(), "Иванов И.И.", 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", "Иванов И.И.", 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(), "Иванов И.И.", 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("Иванов И.И."), Throws.TypeOf<ValidationException>());
+        _workerStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Never);
+    }
+
+    [Test]
+    public void DeleteWorker_StorageThrowError_ThrowException_Test()
+    {
+        //Arrange
+        _workerStorageContract.Setup(x => x.DelElement(It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+        //Act&Assert
+        Assert.That(() => _workerBusinessLogicContract.DeleteWorker(Guid.NewGuid().ToString()), Throws.TypeOf<StorageException>());
+        _workerStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Once);
+    }
+}

FurnitureAssembly/FurnitureAssemblyTests/DataModelsTests/ComponentDataModelTests.cs

@@ -10,9 +10,9 @@ internal class ComponentDataModelTests
     [Test]
     public void IdIsNullOrEmptyTest()
     {
-        var component = CreateDataModel(null, "name", null, null, ComponentType.Box);
+        var component = CreateDataModel(null, "name", ComponentType.Box);
         Assert.That(() => component.Validate(), Throws.TypeOf<ValidationException>());
-        component = CreateDataModel(string.Empty, "name", null, null, ComponentType.Box);
+        component = CreateDataModel(string.Empty, "name", ComponentType.Box);
         Assert.That(() => component.Validate(),
         Throws.TypeOf<ValidationException>());
     }
@@ -20,23 +20,23 @@ internal class ComponentDataModelTests
     [Test]
     public void IdIsNotGuidTest()
     {
-        var component = CreateDataModel("id", "name", null, null, ComponentType.Box);
+        var component = CreateDataModel("id", "name", ComponentType.Box);
         Assert.That(() => component.Validate(), Throws.TypeOf<ValidationException>());
     }
 
     [Test]
     public void NameIsNullOrEmptyTest()
     {
-        var component = CreateDataModel(Guid.NewGuid().ToString(), null, null, null, ComponentType.Box);
+        var component = CreateDataModel(Guid.NewGuid().ToString(), null, ComponentType.Box);
         Assert.That(() => component.Validate(), Throws.TypeOf<ValidationException>());
-        component = CreateDataModel(Guid.NewGuid().ToString(), string.Empty, null, null, ComponentType.Box);
+        component = CreateDataModel(Guid.NewGuid().ToString(), string.Empty,  ComponentType.Box);
         Assert.That(() => component.Validate(), Throws.TypeOf<ValidationException>());
     }
 
     [Test]
     public void PostTypeIsNoneTest()
     {
-        var component = CreateDataModel(Guid.NewGuid().ToString(), "name", null, null, ComponentType.None);
+        var component = CreateDataModel(Guid.NewGuid().ToString(), "name", ComponentType.None);
         Assert.That(() => component.Validate(), Throws.TypeOf<ValidationException>());
     }
 
@@ -45,10 +45,8 @@ internal class ComponentDataModelTests
     {
         var componentId = Guid.NewGuid().ToString();
         var name = "name";
-        var prevName = "prevName";
-        var prevPrevName = "prevPrevName";
         var componentType = ComponentType.Box;
-        var component = CreateDataModel(componentId, name, prevName, prevPrevName, componentType);
+        var component = CreateDataModel(componentId, name, componentType);
         Assert.That(() => component.Validate(), Throws.Nothing);
         Assert.Multiple(() =>
         {
@@ -58,5 +56,5 @@ internal class ComponentDataModelTests
         });
     }
 
-    private static ComponentDataModel CreateDataModel(string? id, string? name, string? prevName, string? prevPrevName, ComponentType componentType) => new(id, name, prevName, prevPrevName, componentType);
+    private static ComponentDataModel CreateDataModel(string? id, string? name, ComponentType componentType, string? prevName = null, string? prevPrevName = null) => new(id, name, componentType, prevName, prevPrevName);
 }

FurnitureAssembly/FurnitureAssemblyTests/DataModelsTests/FurnitureDataModelTests.cs

@@ -11,47 +11,47 @@ internal class FurnitureDataModelTests
     public void IdIsNullOrEmptyTest()
     {
         var model = CreateDataModel(null, "name", 1, CreateSubDataModel());
-        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>().With.Message.EqualTo("Field Id is empty"));
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
 
         model = CreateDataModel(string.Empty, "name", 1, CreateSubDataModel());
-        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>().With.Message.EqualTo("Field Id is empty"));
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
     }
 
     [Test]
     public void IdIsNotGuidTest()
     {
         var model = CreateDataModel("id", "name", 1, CreateSubDataModel());
-        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>().With.Message.EqualTo("The value in the field Id is not a unique identifier"));
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
     }
 
     [Test]
     public void NameIsNullOrEmptyTest()
     {
         var model = CreateDataModel(Guid.NewGuid().ToString(), null, 1, CreateSubDataModel());
-        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>().With.Message.EqualTo("Field FurnitureId is empty"));
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
 
         model = CreateDataModel(Guid.NewGuid().ToString(), string.Empty, 1, CreateSubDataModel());
-        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>().With.Message.EqualTo("Field FurnitureId is empty"));
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
     }
 
     [Test]
     public void WeightIsLessOrZeroTest()
     {
         var model = CreateDataModel(Guid.NewGuid().ToString(), "name", 0, CreateSubDataModel());
-        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>().With.Message.EqualTo("Field Count is less than or equal to 0"));
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
 
         model = CreateDataModel(Guid.NewGuid().ToString(), "name", -1, CreateSubDataModel());
-        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>().With.Message.EqualTo("Field Count is less than or equal to 0"));
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
     }
 
     [Test]
     public void ComponentsIsEmptyOrNullTest()
     {
         var model = CreateDataModel(Guid.NewGuid().ToString(), "name", 1, []);
-        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>().With.Message.EqualTo("The sale must include products"));
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
 
         model = CreateDataModel(Guid.NewGuid().ToString(), "name", 1, null);
-        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>().With.Message.EqualTo("The sale must include products"));
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
     }
 
     [Test]
@@ -73,9 +73,9 @@ internal class FurnitureDataModelTests
         });
     }
 
-    private static FurnitureDataModel CreateDataModel(string? id, string? name, int weight, List<ComponentDataModel> components)
+    private static FurnitureDataModel CreateDataModel(string? id, string? name, int weight, List<FurnitureComponentDataModel> components)
         => new(id, name, weight, components);
 
-    private static List<ComponentDataModel> CreateSubDataModel()
-                    => [new(Guid.NewGuid().ToString(), "componentName", "prevname", "prevprevname", ComponentType.Handle)];
+    private static List<FurnitureComponentDataModel> CreateSubDataModel()
+                    => [new(Guid.NewGuid().ToString(), "componentName", 0)];
 }

FurnitureAssembly/FurnitureAssemblyTests/DataModelsTests/ManifacturingFurnitureDataModelTests.cs

@@ -9,60 +9,60 @@ internal class ManifacturingFurnitureDataModelTests
     [Test]
     public void IdIsNullOrEmptyTest()
     {
-        var model = CreateDataModel(null, Guid.NewGuid().ToString(), 1, DateTime.Now, Guid.NewGuid().ToString());
+        var model = CreateDataModel(null, Guid.NewGuid().ToString(), 1, Guid.NewGuid().ToString());
         Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
 
-        model = CreateDataModel(string.Empty, Guid.NewGuid().ToString(), 1, DateTime.Now, Guid.NewGuid().ToString());
+        model = CreateDataModel(string.Empty, Guid.NewGuid().ToString(), 1, Guid.NewGuid().ToString());
         Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
     }
 
     [Test]
     public void IdIsNotGuidTest()
     {
-        var model = CreateDataModel("id", Guid.NewGuid().ToString(), 1, DateTime.Now, Guid.NewGuid().ToString());
+        var model = CreateDataModel("id", Guid.NewGuid().ToString(), 1, Guid.NewGuid().ToString());
         Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
     }
 
     [Test]
     public void ManifacureIdIsNullOrEmptyTest()
     {
-        var model = CreateDataModel(Guid.NewGuid().ToString(), null, 1, DateTime.Now, Guid.NewGuid().ToString());
+        var model = CreateDataModel(Guid.NewGuid().ToString(), null, 1, Guid.NewGuid().ToString());
         Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
 
-        model = CreateDataModel(Guid.NewGuid().ToString(), string.Empty, 1, DateTime.Now, Guid.NewGuid().ToString());
+        model = CreateDataModel(Guid.NewGuid().ToString(), string.Empty, 1, Guid.NewGuid().ToString());
         Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
     }
 
     [Test]
     public void ManifactureIdIsNotGuidTest()
     {
-        var model = CreateDataModel(Guid.NewGuid().ToString(), "furid", 1, DateTime.Now, Guid.NewGuid().ToString());
+        var model = CreateDataModel(Guid.NewGuid().ToString(), "furid", 1, Guid.NewGuid().ToString());
         Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
     }
 
     [Test]
     public void CountIsLessOrZeroTest()
     {
-        var model = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 0, DateTime.Now, Guid.NewGuid().ToString());
+        var model = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 0, Guid.NewGuid().ToString());
         Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
-        model = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), -1, DateTime.Now, Guid.NewGuid().ToString());
+        model = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), -1, Guid.NewGuid().ToString());
         Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
     }
 
     [Test]
     public void WorkerIdIsNullOrEmptyTest()
     {
-        var model = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 1, DateTime.Now, null);
+        var model = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 1, null);
         Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
 
-        model = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 1, DateTime.Now, string.Empty);
+        model = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 1, string.Empty);
         Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
     }
 
     [Test]
     public void WorkerIdIsNotGuidTest()
     {
-        var model = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 1, DateTime.Now, "id");
+        var model = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 1, "id");
         Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
     }
 
@@ -72,20 +72,18 @@ internal class ManifacturingFurnitureDataModelTests
         var id = Guid.NewGuid().ToString();
         var manid = Guid.NewGuid().ToString();
         var count = 1;
-        var productionDate = DateTime.Now;
         var workerId = Guid.NewGuid().ToString();
-        var model = CreateDataModel(id, manid, count, productionDate, workerId);
+        var model = CreateDataModel(id, manid, count,  workerId);
         Assert.That(() => model.Validate(), Throws.Nothing);
         Assert.Multiple(() =>
         {
             Assert.That(model.Id, Is.EqualTo(id));
             Assert.That(model.FurnitureId, Is.EqualTo(manid));
             Assert.That(model.Count, Is.EqualTo(count));
-            Assert.That(model.ProductuionDate, Is.EqualTo(productionDate));
             Assert.That(model.WorkerId, Is.EqualTo(workerId));
         });
     }
 
-    private static ManifacturingFurnitureDataModel CreateDataModel(string? id, string? furnitureId, int count, DateTime productuionDate, string? workerId) 
-        => new(id, furnitureId, count, productuionDate, workerId);
+    private static ManifacturingFurnitureDataModel CreateDataModel(string? id, string? furnitureId, int count, string? workerId) 
+        => new(id, furnitureId, count, workerId);
 }

FurnitureAssembly/FurnitureAssemblyTests/DataModelsTests/PostDataModelTests.cs

@@ -10,60 +10,43 @@ internal class PostDataModelTests
     [Test]
     public void IdIsNullOrEmptyTest()
     {
-        var model = CreateDataModel(null, Guid.NewGuid().ToString(), "name", PostType.Builder, 100, true, DateTime.Now);
+        var model = CreateDataModel(null, "name", PostType.Builder, 100, true, DateTime.Now);
         Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
 
-        model = CreateDataModel(string.Empty, Guid.NewGuid().ToString(), "name", PostType.Builder, 100, true, DateTime.Now);
+        model = CreateDataModel(string.Empty, "name", PostType.Builder, 100, true, DateTime.Now);
         Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
     }
 
     [Test]
     public void IdIsNotGuidTest()
     {
-        var model = CreateDataModel("id", Guid.NewGuid().ToString(), "name", PostType.Builder, 100, true, DateTime.Now);
-        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
-    }
-
-    [Test]
-    public void PostIdIsNullOrEmptyTest()
-    {
-        var model = CreateDataModel(Guid.NewGuid().ToString(), null, "name", PostType.Builder, 100, true, DateTime.Now);
-        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
-
-        model = CreateDataModel(Guid.NewGuid().ToString(), string.Empty, "name", PostType.Builder, 100, true, DateTime.Now);
-        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
-    }
-
-    [Test]
-    public void PostIdIsNotGuidTest()
-    {
-        var model = CreateDataModel(Guid.NewGuid().ToString(), "id", "name", PostType.Builder, 100, true, DateTime.Now);
+        var model = CreateDataModel("id", "name", PostType.Builder, 100, true, DateTime.Now);
         Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
     }
 
     [Test]
     public void PostNameIsNullOrEmptyTest()
     {
-        var model = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), null, PostType.Builder, 100, true, DateTime.Now);
+        var model = CreateDataModel(Guid.NewGuid().ToString(), null, PostType.Builder, 100, true, DateTime.Now);
         Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
 
-        model = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), string.Empty, PostType.Builder, 100, true, DateTime.Now);
+        model = CreateDataModel(Guid.NewGuid().ToString(), string.Empty, PostType.Builder, 100, true, DateTime.Now);
         Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
     }
 
     [Test]
     public void PostTypeIsNoneTest()
     {
-        var model = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), "name", PostType.None, 100, true, DateTime.Now);
+        var model = CreateDataModel(Guid.NewGuid().ToString(), "name", PostType.None, 100, true, DateTime.Now);
         Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
     }
 
     [Test]
     public void SalaryIsZeroNegativeTest()
     {
-        var model = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), "name", PostType.Builder, 0, true, DateTime.Now);
+        var model = CreateDataModel(Guid.NewGuid().ToString(), "name", PostType.Builder, 0, true, DateTime.Now);
         Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
-        model = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), "name", PostType.Builder, -1, true, DateTime.Now);
+        model = CreateDataModel(Guid.NewGuid().ToString(), "name", PostType.Builder, -1, true, DateTime.Now);
         Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
     }
 
@@ -71,19 +54,17 @@ internal class PostDataModelTests
     public void AllFieldsIsCorrectTest()
     {
         var id = Guid.NewGuid().ToString();
-        var postId = Guid.NewGuid().ToString();
         var postName = "name";
         var postType = PostType.Builder;
         var salary = 100.50;
         var isActual = true;
         var changeDate = DateTime.Now;
-        var model = CreateDataModel(id, postId, postName, postType, salary, isActual, changeDate);
+        var model = CreateDataModel(id, postName, postType, salary, isActual, changeDate);
 
         Assert.That(() => model.Validate(), Throws.Nothing);
         Assert.Multiple(() =>
         {
             Assert.That(model.Id, Is.EqualTo(id));
-            Assert.That(model.PostId, Is.EqualTo(postId));
             Assert.That(model.PostName, Is.EqualTo(postName));
             Assert.That(model.PostType, Is.EqualTo(postType));
             Assert.That(model.Salary, Is.EqualTo(salary));
@@ -92,6 +73,6 @@ internal class PostDataModelTests
         });
     }
 
-    private static PostDataModel CreateDataModel(string? id, string? postId, string? postName, PostType postType, double salary, bool isActual, DateTime changeDate)
-        => new(id, postId, postName, postType, salary, isActual, changeDate);
+    private static PostDataModel CreateDataModel(string? id, string? postName, PostType postType, double salary, bool isActual, DateTime changeDate)
+        => new(id, postName, postType, salary, isActual, changeDate);
 }

FurnitureAssembly/FurnitureAssemblyTests/FurnitureAssemblyTests.csproj

@@ -11,13 +11,16 @@
   <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" />
   </ItemGroup>
 
   <ItemGroup>
+    <ProjectReference Include="..\FurnitureAssemblyBusinessLogic\FurnitureAssemblyBusinessLogic.csproj" />
     <ProjectReference Include="..\FurnitureAssemblyContracts\FurnitureAssemblyContracts.csproj" />
+    <ProjectReference Include="..\FurnitureAssemblyDatebase\FurnitureAssemblyDatebase.csproj" />
   </ItemGroup>
 
   <ItemGroup>

FurnitureAssembly/FurnitureAssemblyTests/Infrastructure/ConfigurationDateBaseTest.cs

@@ -0,0 +1,8 @@
+using FurnitureAssemblyContracts.Infrastructure;
+
+namespace FurnitureAssemblyTests.Infrastructure;
+
+public class ConfigurationDateBaseTest : IConfigurationDatabase
+{
+    public string ConnectionString => "Host=127.0.0.1;Port=5432;Database=furnitureassemblytest;";
+}

FurnitureAssembly/FurnitureAssemblyTests/StorageContractTests/BaseStorageContractTest.cs

@@ -0,0 +1,24 @@
+using FurnitureAssemblyDatebase;
+using FurnitureAssemblyTests.Infrastructure;
+
+namespace FurnitureAssemblyTests.StorageContractTests;
+
+internal abstract class BaseStorageContractTest
+{
+    protected FurnitureAssemblyDbContext FurnitureAssemblyDbContext { get; private set; }
+
+    [OneTimeSetUp]
+    public void OneTimeSetUp()
+    {
+        FurnitureAssemblyDbContext = new FurnitureAssemblyDbContext(new ConfigurationDateBaseTest());
+        FurnitureAssemblyDbContext.Database.EnsureDeleted();
+        FurnitureAssemblyDbContext.Database.EnsureCreated();
+    }
+
+    [OneTimeTearDown]
+    public void OneTimeTearDown()
+    {
+        FurnitureAssemblyDbContext.Database.EnsureDeleted();
+        FurnitureAssemblyDbContext.Dispose();
+    }
+}

FurnitureAssembly/FurnitureAssemblyTests/StorageContractTests/ComponentStorageContractTests.cs

@@ -0,0 +1,201 @@
+using FurnitureAssemblyContracts.DataModels;
+using FurnitureAssemblyContracts.Enums;
+using FurnitureAssemblyContracts.Exceptions;
+using FurnitureAssemblyDatebase.Implementations;
+using FurnitureAssemblyDatebase.Models;
+using Microsoft.EntityFrameworkCore;
+
+namespace FurnitureAssemblyTests.StorageContractTests;
+
+[TestFixture]
+internal class ComponentStorageContractTests : BaseStorageContractTest
+{
+    private ComponentStorageContract _componentStorageContract;
+
+    [SetUp]
+    public void SetUp()
+    {
+        _componentStorageContract = new ComponentStorageContract(FurnitureAssemblyDbContext);
+    }
+
+    [TearDown]
+    public void TearDown()
+    {
+        FurnitureAssemblyDbContext.Database.ExecuteSqlRaw("TRUNCATE \"Components\" CASCADE; ");
+    }
+
+    [Test]
+    public void Try_GetList_WhenHaveRecords_Test()
+    {
+        var component = InsertComponentToDatabaseAndReturn(Guid.NewGuid().ToString(), "Component 1");
+        InsertComponentToDatabaseAndReturn(Guid.NewGuid().ToString(), "Component 2");
+        InsertComponentToDatabaseAndReturn(Guid.NewGuid().ToString(), "Component 3");
+        var list = _componentStorageContract.GetList();
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(3));
+        AssertElement(list.First(), component);
+    }
+
+    [Test]
+    public void Try_GetList_WhenNoRecords_Test()
+    {
+        var list = _componentStorageContract.GetList();
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Is.Empty);
+    }
+
+    [Test]
+    public void Try_GetElementById_WhenHaveRecord_Test()
+    {
+        var component = InsertComponentToDatabaseAndReturn(Guid.NewGuid().ToString());
+        AssertElement(_componentStorageContract.GetElementById(component.Id), component);
+    }
+
+    [Test]
+    public void Try_GetElementById_WhenNoRecord_Test()
+    {
+        InsertComponentToDatabaseAndReturn(Guid.NewGuid().ToString());
+        Assert.That(() => _componentStorageContract.GetElementById(Guid.NewGuid().ToString()), Is.Null);
+    }
+
+    [Test]
+    public void Try_GetElementByName_WhenHaveRecord_Test()
+    {
+        var component = InsertComponentToDatabaseAndReturn(Guid.NewGuid().ToString(), "Unique Name");
+        AssertElement(_componentStorageContract.GetElementByName(component.Name), component);
+    }
+
+    [Test]
+    public void Try_GetElementByName_WhenNoRecord_Test()
+    {
+        InsertComponentToDatabaseAndReturn(Guid.NewGuid().ToString());
+        Assert.That(() => _componentStorageContract.GetElementByName("Non-existent Name"), Is.Null);
+    }
+
+    [Test]
+    public void Try_GetElementByOldName_WhenHaveRecord_Test()
+    {
+        var component = InsertComponentToDatabaseAndReturn(Guid.NewGuid().ToString(), "Current Name", ComponentType.Panel, "Previous Name", "Old Name");
+        AssertElement(_componentStorageContract.GetElementByOldName(component.PrevName!), component);
+        AssertElement(_componentStorageContract.GetElementByOldName(component.PrevPrevName!), component);
+    }
+
+    [Test]
+    public void Try_GetElementByOldName_WhenNoRecord_Test()
+    {
+        InsertComponentToDatabaseAndReturn(Guid.NewGuid().ToString());
+        Assert.That(() => _componentStorageContract.GetElementByOldName("Non-existent Old Name"), Is.Null);
+    }
+
+    [Test]
+    public void Try_AddElement_Test()
+    {
+        var component = CreateModel(Guid.NewGuid().ToString(), "New Component");
+        _componentStorageContract.AddElement(component);
+        AssertElement(GetComponentFromDatabase(component.Id), component);
+    }
+
+    [Test]
+    public void Try_AddElement_WhenHaveRecordWithSameId_Test()
+    {
+        var component = CreateModel(Guid.NewGuid().ToString(), "Unique Name");
+        InsertComponentToDatabaseAndReturn(component.Id);
+        Assert.That(() => _componentStorageContract.AddElement(component), Throws.TypeOf<ElementExistsException>());
+    }
+
+    [Test]
+    public void Try_AddElement_WhenHaveRecordWithSameName_Test()
+    {
+        var component = CreateModel(Guid.NewGuid().ToString(), "Duplicate Name");
+        InsertComponentToDatabaseAndReturn(Guid.NewGuid().ToString(), component.Name);
+        Assert.That(() => _componentStorageContract.AddElement(component), Throws.TypeOf<ElementExistsException>());
+    }
+
+    [Test]
+    public void Try_UpdElement_Test()
+    {
+        var component = CreateModel(Guid.NewGuid().ToString(), "Old Name", ComponentType.Panel, "Previous Name", "Old Name");
+        InsertComponentToDatabaseAndReturn(component.Id, name: component.Name!, type: component.Type!, prevName: component.PrevName!, prevPrevName: component.PrevPrevName!);
+        _componentStorageContract.UpdElement(component);
+        AssertElement(GetComponentFromDatabase(component.Id), component);
+ 
+    }
+
+    [Test]
+    public void Try_UpdElement_WhenNoChangeName_Test()
+    {
+        var component = CreateModel(Guid.NewGuid().ToString(), "Same Name", ComponentType.Panel, "Previous Name", "Old Name");
+        InsertComponentToDatabaseAndReturn(component.Id, component.Name, component.Type, component.PrevName, component.PrevPrevName);
+        _componentStorageContract.UpdElement(component);
+        AssertElement(GetComponentFromDatabase(component.Id), component);
+    }
+
+    [Test]
+    public void Try_UpdElement_WhenNoRecordWithThisId_Test()
+    {
+        Assert.That(() => _componentStorageContract.UpdElement(CreateModel(Guid.NewGuid().ToString())), Throws.TypeOf<ElementNotFoundException>());
+    }
+
+    [Test]
+    public void Try_UpdElement_WhenHaveRecordWithSameName_Test()
+    {
+        var component = CreateModel(Guid.NewGuid().ToString(), "Duplicate Name");
+        InsertComponentToDatabaseAndReturn(component.Id, "Old Name");
+        InsertComponentToDatabaseAndReturn(Guid.NewGuid().ToString(), component.Name);
+        Assert.That(() => _componentStorageContract.UpdElement(component), Throws.TypeOf<ElementExistsException>());
+    }
+
+    [Test]
+    public void Try_DelElement_Test()
+    {
+        var component = InsertComponentToDatabaseAndReturn(Guid.NewGuid().ToString());
+        _componentStorageContract.DelElement(component.Id);
+        var element = GetComponentFromDatabase(component.Id);
+        Assert.That(element, Is.Null);
+    }
+
+    [Test]
+    public void Try_DelElement_WhenNoRecordWithThisId_Test()
+    {
+        Assert.That(() => _componentStorageContract.DelElement(Guid.NewGuid().ToString()), Throws.TypeOf<ElementNotFoundException>());
+    }
+
+    private Component InsertComponentToDatabaseAndReturn(string id, string name = "test", ComponentType type = ComponentType.Panel, string prevName = "prevname", string prevPrevName = "prevprevname")
+    {
+        var component = new Component { Id = id, Name = name, Type = type, PrevName = prevName, PrevPrevName = prevPrevName };
+        FurnitureAssemblyDbContext.Components.Add(component);
+        FurnitureAssemblyDbContext.SaveChanges();
+        return component;
+    }
+
+    private static void AssertElement(ComponentDataModel? actual, Component expected)
+    {
+        Assert.That(actual, Is.Not.Null);
+        Assert.Multiple(() =>
+        {
+            Assert.That(actual.Id, Is.EqualTo(expected.Id));
+            Assert.That(actual.Name, Is.EqualTo(expected.Name));
+            Assert.That(actual.PrevName, Is.EqualTo(expected.PrevName));
+            Assert.That(actual.PrevPrevName, Is.EqualTo(expected.PrevPrevName));
+            Assert.That(actual.Type, Is.EqualTo(expected.Type));
+        });
+    }
+
+    private static ComponentDataModel CreateModel(string id, string name = "test", ComponentType type = ComponentType.Panel, string prevName = "prevname", string prevPrevName = "prevprevname")
+        => new(id, name, type, prevName, prevPrevName);
+
+    private Component? GetComponentFromDatabase(string id) => FurnitureAssemblyDbContext.Components.FirstOrDefault(x => x.Id == id);
+
+    private static void AssertElement(Component? actual, ComponentDataModel expected)
+    {
+        Assert.That(actual, Is.Not.Null);
+        Assert.Multiple(() =>
+        {
+            Assert.That(actual.Id, Is.EqualTo(expected.Id));
+            Assert.That(actual.Name, Is.EqualTo(expected.Name));
+            Assert.That(actual.PrevName, Is.EqualTo(expected.PrevName));
+            Assert.That(actual.PrevPrevName, Is.EqualTo(expected.PrevPrevName));
+            Assert.That(actual.Type, Is.EqualTo(expected.Type));
+        });
+    }
+}

FurnitureAssembly/FurnitureAssemblyTests/StorageContractTests/FurnitureStorageContractTests.cs

@@ -0,0 +1,178 @@
+using FurnitureAssemblyContracts.DataModels;
+using FurnitureAssemblyContracts.Exceptions;
+using FurnitureAssemblyDatebase;
+using FurnitureAssemblyDatebase.Models;
+using Microsoft.EntityFrameworkCore;
+
+namespace FurnitureAssemblyTests.StorageContractTests;
+
+[TestFixture]
+internal class FurnitureStorageContractTests : BaseStorageContractTest
+{
+    private FurnitureStorageContract _furnitureStorageContract;
+
+    [SetUp]
+    public void SetUp()
+    {
+        _furnitureStorageContract = new FurnitureStorageContract(FurnitureAssemblyDbContext);
+    }
+
+    [TearDown]
+    public void TearDown()
+    {
+        FurnitureAssemblyDbContext.Database.ExecuteSqlRaw("TRUNCATE \"Furnitures\" CASCADE;");
+    }
+
+    [Test]
+    public void Try_GetList_WhenHaveRecords_Test()
+    {
+        var furniture = InsertFurnitureToDatabaseAndReturn(Guid.NewGuid().ToString(), "Furniture 1");
+        InsertFurnitureToDatabaseAndReturn(Guid.NewGuid().ToString(), "Furniture 2");
+        InsertFurnitureToDatabaseAndReturn(Guid.NewGuid().ToString(), "Furniture 3");
+        var list = _furnitureStorageContract.GetList();
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(3));
+        AssertElement(list.First(), furniture);
+    }
+
+    [Test]
+    public void Try_GetList_WhenNoRecords_Test()
+    {
+        var list = _furnitureStorageContract.GetList();
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Is.Empty);
+    }
+
+    [Test]
+    public void Try_GetElementById_WhenHaveRecord_Test()
+    {
+        var furniture = InsertFurnitureToDatabaseAndReturn(Guid.NewGuid().ToString());
+        AssertElement(_furnitureStorageContract.GetElementById(furniture.Id), furniture);
+    }
+
+    [Test]
+    public void Try_GetElementById_WhenNoRecord_Test()
+    {
+        InsertFurnitureToDatabaseAndReturn(Guid.NewGuid().ToString());
+        Assert.That(() => _furnitureStorageContract.GetElementById(Guid.NewGuid().ToString()), Is.Null);
+    }
+
+    [Test]
+    public void Try_GetElementByName_WhenHaveRecord_Test()
+    {
+        var furniture = InsertFurnitureToDatabaseAndReturn(Guid.NewGuid().ToString(), "Unique Name");
+        AssertElement(_furnitureStorageContract.GetElementByName(furniture.Name), furniture);
+    }
+
+    [Test]
+    public void Try_GetElementByName_WhenNoRecord_Test()
+    {
+        InsertFurnitureToDatabaseAndReturn(Guid.NewGuid().ToString());
+        Assert.That(() => _furnitureStorageContract.GetElementByName("Non-existent Name"), Is.Null);
+    }
+
+    [Test]
+    public void Try_AddElement_Test()
+    {
+        var furniture = CreateModel(Guid.NewGuid().ToString(), "New Furniture");
+        _furnitureStorageContract.AddElement(furniture);
+        AssertElement(GetFurnitureFromDatabase(furniture.Id), furniture);
+    }
+
+    [Test]
+    public void Try_AddElement_WhenHaveRecordWithSameId_Test()
+    {
+        var furniture = CreateModel(Guid.NewGuid().ToString(), "Unique Name");
+        InsertFurnitureToDatabaseAndReturn(furniture.Id);
+        Assert.That(() => _furnitureStorageContract.AddElement(furniture), Throws.TypeOf<ElementExistsException>());
+    }
+
+    [Test]
+    public void Try_AddElement_WhenHaveRecordWithSameName_Test()
+    {
+        var furniture = CreateModel(Guid.NewGuid().ToString(), "Duplicate Name");
+        InsertFurnitureToDatabaseAndReturn(Guid.NewGuid().ToString(), furniture.Name);
+        Assert.That(() => _furnitureStorageContract.AddElement(furniture), Throws.TypeOf<ElementExistsException>());
+    }
+
+    [Test]
+    public void Try_UpdElement_Test()
+    {
+        var furniture = CreateModel(Guid.NewGuid().ToString(), "Old Name");
+        InsertFurnitureToDatabaseAndReturn(furniture.Id, name: furniture.Name!);
+        _furnitureStorageContract.UpdElement(furniture);
+        AssertElement(GetFurnitureFromDatabase(furniture.Id), furniture);
+    }
+
+    [Test]
+    public void Try_UpdElement_WhenNoChangeName_Test()
+    {
+        var furniture = CreateModel(Guid.NewGuid().ToString(), "Same Name");
+        InsertFurnitureToDatabaseAndReturn(furniture.Id, furniture.Name);
+        _furnitureStorageContract.UpdElement(furniture);
+        AssertElement(GetFurnitureFromDatabase(furniture.Id), furniture);
+    }
+
+    [Test]
+    public void Try_UpdElement_WhenNoRecordWithThisId_Test()
+    {
+        Assert.That(() => _furnitureStorageContract.UpdElement(CreateModel(Guid.NewGuid().ToString())), Throws.TypeOf<ElementNotFoundException>());
+    }
+
+    [Test]
+    public void Try_UpdElement_WhenHaveRecordWithSameName_Test()
+    {
+        var furniture = CreateModel(Guid.NewGuid().ToString(), "Duplicate Name");
+        InsertFurnitureToDatabaseAndReturn(furniture.Id, "Old Name");
+        InsertFurnitureToDatabaseAndReturn(Guid.NewGuid().ToString(), furniture.Name);
+        Assert.That(() => _furnitureStorageContract.UpdElement(furniture), Throws.TypeOf<ElementExistsException>());
+    }
+
+    [Test]
+    public void Try_DelElement_Test()
+    {
+        var furniture = InsertFurnitureToDatabaseAndReturn(Guid.NewGuid().ToString());
+        _furnitureStorageContract.DelElement(furniture.Id);
+        var element = GetFurnitureFromDatabase(furniture.Id);
+        Assert.That(element, Is.Null);
+    }
+
+    [Test]
+    public void Try_DelElement_WhenNoRecordWithThisId_Test()
+    {
+        Assert.That(() => _furnitureStorageContract.DelElement(Guid.NewGuid().ToString()), Throws.TypeOf<ElementNotFoundException>());
+    }
+
+    private Furniture InsertFurnitureToDatabaseAndReturn(string id, string name = "test")
+    {
+        var furniture = new Furniture { Id = id, Name = name };
+        FurnitureAssemblyDbContext.Furnitures.Add(furniture);
+        FurnitureAssemblyDbContext.SaveChanges();
+        return furniture;
+    }
+
+    private static void AssertElement(FurnitureDataModel? actual, Furniture expected)
+    {
+        Assert.That(actual, Is.Not.Null);
+        Assert.Multiple(() =>
+        {
+            Assert.That(actual.Id, Is.EqualTo(expected.Id));
+            Assert.That(actual.Name, Is.EqualTo(expected.Name));
+        });
+    }
+
+    private static FurnitureDataModel CreateModel(string id, string name = "test", int weight = 0)
+        => new(id, name, weight, []);
+
+    private Furniture? GetFurnitureFromDatabase(string id) => FurnitureAssemblyDbContext.Furnitures.FirstOrDefault(x => x.Id == id);
+
+    private static void AssertElement(Furniture? actual, FurnitureDataModel expected)
+    {
+        Assert.That(actual, Is.Not.Null);
+        Assert.Multiple(() =>
+        {
+            Assert.That(actual.Id, Is.EqualTo(expected.Id));
+            Assert.That(actual.Name, Is.EqualTo(expected.Name));
+        });
+    }
+}

FurnitureAssembly/FurnitureAssemblyTests/StorageContractTests/ManifacturingStorageContractTests.cs

@@ -0,0 +1,178 @@
+using FurnitureAssemblyContracts.DataModels;
+using FurnitureAssemblyContracts.Exceptions;
+using FurnitureAssemblyDatebase.Implementations;
+using FurnitureAssemblyDatebase.Models;
+using Microsoft.EntityFrameworkCore;
+
+namespace FurnitureAssemblyTests.StorageContractTests;
+
+[TestFixture]
+internal class ManifacturingStorageContractTests : BaseStorageContractTest
+{
+    private ManifacturingStorageContract _manifacturingStorageContract;
+    private Worker _worker;
+    private Furniture _furniture;
+
+    [SetUp]
+    public void SetUp()
+    {
+        _manifacturingStorageContract = new ManifacturingStorageContract(FurnitureAssemblyDbContext);
+        _worker = InsertWorkerToDatabaseAndReturn();
+        _furniture = InsertFurnitureToDatabaseAndReturn();
+    }
+
+    [TearDown]
+    public void TearDown()
+    {
+        FurnitureAssemblyDbContext.Database.ExecuteSqlRaw("TRUNCATE \"Furnitures\" CASCADE;");
+        FurnitureAssemblyDbContext.Database.ExecuteSqlRaw("TRUNCATE \"Manufacturing\" CASCADE;");
+        FurnitureAssemblyDbContext.Database.ExecuteSqlRaw("TRUNCATE \"Workers\" CASCADE;");    
+    }
+
+    [Test]
+    public void Try_GetList_WhenHaveRecords_Test()
+    {
+        var manufacturing = InsertManufacturingToDatabaseAndReturn(Guid.NewGuid().ToString(), _furniture.Id, 5, _worker.Id);
+        InsertManufacturingToDatabaseAndReturn(Guid.NewGuid().ToString(), _furniture.Id, 5, _worker.Id);
+        InsertManufacturingToDatabaseAndReturn(Guid.NewGuid().ToString(), _furniture.Id, 5, _worker.Id);
+        var list = _manifacturingStorageContract.GetList();
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(3));
+        AssertElement(list.First(), manufacturing);
+    }
+
+    [Test]
+    public void Try_GetList_WhenNoRecords_Test()
+    {
+        var list = _manifacturingStorageContract.GetList();
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Is.Empty);
+    }
+
+    [Test]
+    public void Try_GetList_ByWorker_Test()
+    {
+        var worker = InsertWorkerToDatabaseAndReturn("Other worker");
+        InsertManufacturingToDatabaseAndReturn(Guid.NewGuid().ToString(), _furniture.Id, 5, _worker.Id);
+        InsertManufacturingToDatabaseAndReturn(Guid.NewGuid().ToString(), _furniture.Id, 5, _worker.Id);
+        InsertManufacturingToDatabaseAndReturn(Guid.NewGuid().ToString(), _furniture.Id, 5, worker.Id);
+        var list = _manifacturingStorageContract.GetList(workerId: _worker.Id);
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(2));
+        Assert.That(list.All(x => x.WorkerId == _worker.Id));
+    }
+
+    [Test]
+    public void Try_GetList_ByFurniture_Test()
+    {
+        var furniture = InsertFurnitureToDatabaseAndReturn("Other furniture");
+        InsertManufacturingToDatabaseAndReturn(Guid.NewGuid().ToString(), _furniture.Id, 5, _worker.Id);
+        InsertManufacturingToDatabaseAndReturn(Guid.NewGuid().ToString(), _furniture.Id, 5, _worker.Id);
+        InsertManufacturingToDatabaseAndReturn(Guid.NewGuid().ToString(), furniture.Id, 5, _worker.Id);
+        var list = _manifacturingStorageContract.GetList(furnitureId: _furniture.Id);
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(2));
+        Assert.That(list.All(x => x.FurnitureId == _furniture.Id));
+    }
+
+    [Test]
+    public void Try_GetElementById_WhenHaveRecord_Test()
+    {
+        var manufacturing = InsertManufacturingToDatabaseAndReturn(Guid.NewGuid().ToString(), _furniture.Id, 5, _worker.Id);
+        AssertElement(_manifacturingStorageContract.GetElementById(manufacturing.Id), manufacturing);
+    }
+
+    [Test]
+    public void Try_GetElementById_WhenNoRecord_Test()
+    {
+        InsertManufacturingToDatabaseAndReturn(Guid.NewGuid().ToString(), _furniture.Id, 5, _worker.Id);
+        Assert.That(() => _manifacturingStorageContract.GetElementById(Guid.NewGuid().ToString()), Is.Null);
+    }
+
+    [Test]
+    public void Try_AddElement_Test()
+    {
+        var manufacturing = CreateModel(Guid.NewGuid().ToString(), _furniture.Id, 5, _worker.Id);
+        _manifacturingStorageContract.AddElement(manufacturing);
+        AssertElement(GetManufacturingFromDatabaseById(manufacturing.Id), manufacturing);
+    }
+
+    [Test]
+    public void Try_AddElement_WhenHaveRecordWithSameId_Test()
+    {
+        var manufacturing = CreateModel(Guid.NewGuid().ToString(), _furniture.Id, 5, _worker.Id);
+        InsertManufacturingToDatabaseAndReturn(manufacturing.Id, _furniture.Id, 5, _worker.Id);
+        Assert.That(() => _manifacturingStorageContract.AddElement(manufacturing), Throws.TypeOf<StorageException>());
+    }
+
+    [Test]
+    public void Try_UpdElement_Test()
+    {
+        var manufacturing = CreateModel(Guid.NewGuid().ToString(), _furniture.Id, 5, _worker.Id);
+        InsertManufacturingToDatabaseAndReturn(manufacturing.Id, _furniture.Id, 5, _worker.Id);
+        _manifacturingStorageContract.UpdElement(manufacturing);
+        AssertElement(GetManufacturingFromDatabaseById(manufacturing.Id), manufacturing);
+    }
+
+    [Test]
+    public void Try_UpdElement_WhenNoRecordWithThisId_Test()
+    {
+        Assert.That(() => _manifacturingStorageContract.UpdElement(CreateModel(Guid.NewGuid().ToString(), _furniture.Id, 5, _worker.Id)), Throws.TypeOf<ElementNotFoundException>());
+    }
+
+    private Worker InsertWorkerToDatabaseAndReturn(string workerFIO = "fio")
+    {
+        var worker = new Worker() { Id = Guid.NewGuid().ToString(), PostId = Guid.NewGuid().ToString(), FIO = workerFIO, IsDeleted = false };
+        FurnitureAssemblyDbContext.Workers.Add(worker);
+        FurnitureAssemblyDbContext.SaveChanges();
+        return worker;
+    }
+
+    private Furniture InsertFurnitureToDatabaseAndReturn(string furnitureName = "furniture", int weight = 5)
+    {
+        var furniture = new Furniture() { Id = Guid.NewGuid().ToString(), Name = furnitureName, Weight = weight };
+        FurnitureAssemblyDbContext.Furnitures.Add(furniture);
+        FurnitureAssemblyDbContext.SaveChanges();
+        return furniture;
+    }
+
+    private ManifacturingFurniture InsertManufacturingToDatabaseAndReturn(string id, string furnitureId, int count, string workerId)
+    {
+        var manufacturing = new ManifacturingFurniture() { Id = id, FurnitureId = furnitureId, Count = count, WorkerId = workerId };
+        FurnitureAssemblyDbContext.Manufacturing.Add(manufacturing);
+        FurnitureAssemblyDbContext.SaveChanges();
+        return manufacturing;
+    }
+
+    private static void AssertElement(ManifacturingFurnitureDataModel? actual, ManifacturingFurniture expected)
+    {
+        Assert.That(actual, Is.Not.Null);
+        Assert.Multiple(() =>
+        {
+            Assert.That(actual.Id, Is.EqualTo(expected.Id));
+            Assert.That(actual.WorkerId, Is.EqualTo(expected.WorkerId));
+            Assert.That(actual.Count, Is.EqualTo(expected.Count));
+            Assert.That(actual.FurnitureId, Is.EqualTo(expected.FurnitureId));
+        });
+    }
+
+    private static ManifacturingFurnitureDataModel CreateModel(string id, string furnitureId, int count, string workerId)
+    {
+        return new(id, furnitureId, count, workerId);
+    }
+
+    private ManifacturingFurniture? GetManufacturingFromDatabaseById(string id) =>
+        FurnitureAssemblyDbContext.Manufacturing.FirstOrDefault(x => x.Id == id);
+
+    private static void AssertElement(ManifacturingFurniture? actual, ManifacturingFurnitureDataModel expected)
+    {
+        Assert.That(actual, Is.Not.Null);
+        Assert.Multiple(() =>
+        {
+            Assert.That(actual.Id, Is.EqualTo(expected.Id));
+            Assert.That(actual.WorkerId, Is.EqualTo(expected.WorkerId));
+            Assert.That(actual.Count, Is.EqualTo(expected.Count));
+            Assert.That(actual.FurnitureId, Is.EqualTo(expected.FurnitureId));
+        });
+    }
+}

FurnitureAssembly/FurnitureAssemblyTests/StorageContractTests/PostStorageContractTests.cs

@@ -0,0 +1,337 @@
+using FurnitureAssemblyContracts.DataModels;
+using FurnitureAssemblyContracts.Enums;
+using FurnitureAssemblyContracts.Exceptions;
+using FurnitureAssemblyDatebase.Implementations;
+using FurnitureAssemblyDatebase.Models;
+using Microsoft.EntityFrameworkCore;
+
+namespace FurnitureAssemblyTests.StorageContractTests;
+
+[TestFixture]
+internal class PostStorageContractTests : BaseStorageContractTest
+{
+    private PostStorageContract _postStorageContract;
+
+    [SetUp]
+    public void SetUp()
+    {
+        _postStorageContract = new PostStorageContract(FurnitureAssemblyDbContext);
+    }
+
+    [TearDown]
+    public void TearDown()
+    {
+        FurnitureAssemblyDbContext.Database.ExecuteSqlRaw("TRUNCATE \"Posts\"CASCADE; ");
+    }
+
+    [Test]
+    public void Try_GetList_WhenHaveRecords_Test()
+    {
+        var post = InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString(),
+        "name 1");
+        InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString(), "name 2");
+        InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString(), "name 3");
+        var list = _postStorageContract.GetList();
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(3));
+        AssertElement(list.First(x => x.Id == post.PostId), post);
+    }
+
+    [Test]
+    public void Try_GetList_WhenNoRecords_Test()
+    {
+        var list = _postStorageContract.GetList();
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Is.Empty);
+    }
+
+    [Test]
+    public void Try_GetList_OnlyActual_Test()
+    {
+        InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString(), "name 1", isActual: true);
+        InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString(), "name 2", isActual: true);
+        InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString(), "name 3", isActual: false);
+        var list = _postStorageContract.GetList(onlyActual: true);
+        Assert.That(list, Is.Not.Null);
+        Assert.Multiple(() =>
+        {
+            Assert.That(list, Has.Count.EqualTo(2));
+            Assert.That(!list.Any(x => !x.IsActual));
+        });
+    }
+
+    [Test]
+    public void Try_GetList_IncludeNoActual_Test()
+    {
+        InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString(), "name 1", isActual: true);
+        InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString(), "name 2", isActual: true);
+        InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString(), "name 3", isActual: false);
+        var list = _postStorageContract.GetList(onlyActual: false);
+        Assert.That(list, Is.Not.Null);
+        Assert.Multiple(() =>
+        {
+            Assert.That(list, Has.Count.EqualTo(3));
+            Assert.That(list.Count(x => x.IsActual), Is.EqualTo(2));
+            Assert.That(list.Count(x => !x.IsActual), Is.EqualTo(1));
+        });
+    }
+
+    [Test]
+    public void Try_GetPostWithHistory_WhenHaveRecords_Test()
+    {
+        var postId = Guid.NewGuid().ToString();
+        InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString(), "name 1", isActual: true);
+        InsertPostToDatabaseAndReturn(postId, "name 2", isActual: true);
+        InsertPostToDatabaseAndReturn(postId, "name 2", isActual: false);
+        var list = _postStorageContract.GetPostWithHistory(postId);
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(2));
+    }
+
+    [Test]
+    public void Try_GetPostWithHistory_WhenNoRecords_Test()
+    {
+        var postId = Guid.NewGuid().ToString();
+        InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString(), "name 1", isActual: true);
+        InsertPostToDatabaseAndReturn(postId, "name 2", isActual: true);
+        InsertPostToDatabaseAndReturn(postId, "name 2", isActual: false);
+        var list = _postStorageContract.GetPostWithHistory(Guid.NewGuid().ToString());
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(0));
+    }
+
+    [Test]
+    public void Try_GetElementById_WhenHaveRecord_Test()
+    {
+        var post = InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString());
+        AssertElement(_postStorageContract.GetElementById(post.PostId), post);
+    }
+
+    [Test]
+    public void Try_GetElementById_WhenNoRecord_Test()
+    {
+        InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString());
+        Assert.That(() => _postStorageContract.GetElementById(Guid.NewGuid().ToString()), Is.Null);
+    }
+
+    [Test]
+    public void Try_GetElementById_WhenRecordHasDeleted_Test()
+    {
+        var post = InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString(), isActual: false);
+        Assert.That(() => _postStorageContract.GetElementById(post.PostId), Is.Null);
+    }
+
+    [Test]
+    public void Try_GetElementById_WhenTrySearchById_Test()
+    {
+        var post = InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString());
+        Assert.That(() => _postStorageContract.GetElementById(post.Id), Is.Null);
+    }
+
+    [Test]
+    public void Try_GetElementByName_WhenHaveRecord_Test()
+    {
+        var post = InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString());
+        AssertElement(_postStorageContract.GetElementByName(post.PostName),
+        post);
+    }
+
+    [Test]
+    public void Try_GetElementByName_WhenNoRecord_Test()
+    {
+        InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString());
+        Assert.That(() => _postStorageContract.GetElementByName("name"), Is.Null);
+    }
+
+    [Test]
+    public void Try_GetElementByName_WhenRecordHasDeleted_Test()
+    {
+        var post = InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString(), isActual: false);
+        Assert.That(() => _postStorageContract.GetElementById(post.PostName), Is.Null);
+    }
+
+    [Test]
+    public void Try_AddElement_Test()
+    {
+        var post = CreateModel(Guid.NewGuid().ToString(), isActual: true);
+        _postStorageContract.AddElement(post);
+        AssertElement(GetPostFromDatabaseByPostId(post.Id), post);
+    }
+
+    [Test]
+    public void Try_AddElement_WhenActualIsFalse_Test()
+    {
+        var post = CreateModel(Guid.NewGuid().ToString(), isActual: false);
+        Assert.That(() => _postStorageContract.AddElement(post),
+        Throws.Nothing);
+        AssertElement(GetPostFromDatabaseByPostId(post.Id),
+        CreateModel(post.Id, isActual: true));
+    }
+
+    [Test]
+    public void Try_AddElement_WhenHaveRecordWithSameName_Test()
+    {
+        var post = CreateModel(Guid.NewGuid().ToString(), "name unique", isActual: true);
+        InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString(), postName: post.PostName, isActual: true);
+        Assert.That(() => _postStorageContract.AddElement(post),
+        Throws.TypeOf<ElementExistsException>());
+    }
+
+    [Test]
+    public void
+    Try_AddElement_WhenHaveRecordWithSamePostIdAndActualIsTrue_Test()
+    {
+        var post = CreateModel(Guid.NewGuid().ToString(), isActual: true);
+        InsertPostToDatabaseAndReturn(post.Id, isActual: true);
+        Assert.That(() => _postStorageContract.AddElement(post),
+        Throws.TypeOf<ElementExistsException>());
+    }
+
+    [Test]
+    public void Try_UpdElement_Test()
+    {
+        var post = CreateModel(Guid.NewGuid().ToString());
+        InsertPostToDatabaseAndReturn(post.Id, isActual: true);
+        _postStorageContract.UpdElement(post);
+        var posts = FurnitureAssemblyDbContext.Posts.Where(x => x.PostId == post.Id).OrderByDescending(x => x.ChangeDate);
+        Assert.That(posts.Count(), Is.EqualTo(2));
+        AssertElement(posts.First(), CreateModel(post.Id, isActual: true));
+        AssertElement(posts.Last(), CreateModel(post.Id, isActual: false));
+    }
+
+    [Test]
+    public void Try_UpdElement_WhenActualIsFalse_Test()
+    {
+        var post = CreateModel(Guid.NewGuid().ToString(), isActual: false);
+        InsertPostToDatabaseAndReturn(post.Id, isActual: true);
+        _postStorageContract.UpdElement(post);
+        AssertElement(GetPostFromDatabaseByPostId(post.Id),
+        CreateModel(post.Id, isActual: true));
+    }
+
+    [Test]
+    public void Try_UpdElement_WhenNoRecordWithThisId_Test()
+    {
+        Assert.That(() => _postStorageContract.UpdElement(CreateModel(Guid.NewGuid().ToString())),
+        Throws.TypeOf<ElementNotFoundException>());
+    }
+
+    [Test]
+    public void Try_UpdElement_WhenHaveRecordWithSameName_Test()
+    {
+        var post = CreateModel(Guid.NewGuid().ToString(), "New Name");
+        InsertPostToDatabaseAndReturn(post.Id, postName: "name");
+        InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString(), postName: post.PostName);
+        Assert.That(() => _postStorageContract.UpdElement(post),
+        Throws.TypeOf<ElementExistsException>());
+    }
+
+    [Test]
+    public void Try_UpdElement_WhenRecordWasDeleted_Test()
+    {
+        var post = CreateModel(Guid.NewGuid().ToString());
+        InsertPostToDatabaseAndReturn(post.Id, isActual: false);
+        Assert.That(() => _postStorageContract.UpdElement(post), Throws.TypeOf<ElementDeletedException>());
+    }
+
+    [Test]
+    public void Try_DelElement_Test()
+    {
+        var post = InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString(), isActual: true);
+        _postStorageContract.DelElement(post.PostId);
+        var element = GetPostFromDatabaseByPostId(post.PostId);
+        Assert.Multiple(() =>
+        {
+            Assert.That(element, Is.Not.Null);
+            Assert.That(!element!.IsActual);
+        });
+    }
+
+    [Test]
+    public void Try_DelElement_WhenNoRecordWithThisId_Test()
+    {
+        Assert.That(() => _postStorageContract.DelElement(Guid.NewGuid().ToString()), Throws.TypeOf<ElementNotFoundException>());
+    }
+
+    [Test]
+    public void Try_DelElement_WhenRecordWasDeleted_Test()
+    {
+        var post = InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString(), isActual: false);
+        Assert.That(() => _postStorageContract.DelElement(post.PostId), Throws.TypeOf<ElementDeletedException>());
+    }
+
+    [Test]
+    public void Try_ResElement_Test()
+    {
+        var post = InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString(), isActual: false);
+        _postStorageContract.ResElement(post.PostId);
+        var element = GetPostFromDatabaseByPostId(post.PostId);
+        Assert.Multiple(() =>
+        {
+            Assert.That(element, Is.Not.Null);
+            Assert.That(element!.IsActual);
+        });
+    }
+
+    [Test]
+    public void Try_ResElement_WhenNoRecordWithThisId_Test()
+    {
+        Assert.That(() => _postStorageContract.ResElement(Guid.NewGuid().ToString()),
+        Throws.TypeOf<ElementNotFoundException>());
+    }
+
+    [Test]
+    public void Try_ResElement_WhenRecordNotWasDeleted_Test()
+    {
+        var post = InsertPostToDatabaseAndReturn(Guid.NewGuid().ToString(), isActual: true);
+        Assert.That(() => _postStorageContract.ResElement(post.PostId), Throws.Nothing);
+    }
+
+    private Post InsertPostToDatabaseAndReturn(string id, string postName = "test", PostType postType = PostType.Builder, double salary = 10, bool isActual = true, DateTime? changeDate = null)
+    {
+        var post = new Post()
+        {
+            Id = Guid.NewGuid().ToString(),
+            PostId = id,
+            PostName = postName,
+            PostType = postType,
+            Salary = salary,
+            IsActual = isActual,
+            ChangeDate = changeDate ?? DateTime.UtcNow
+        };
+        FurnitureAssemblyDbContext.Posts.Add(post);
+        FurnitureAssemblyDbContext.SaveChanges();
+        return post;
+    }
+
+    private static void AssertElement(PostDataModel? actual, Post expected)
+    {
+        Assert.That(actual, Is.Not.Null);
+        Assert.Multiple(() =>
+        {
+            Assert.That(actual.Id, Is.EqualTo(expected.PostId));
+            Assert.That(actual.PostName, Is.EqualTo(expected.PostName)); Assert.That(actual.PostType, Is.EqualTo(expected.PostType));
+            Assert.That(actual.Salary, Is.EqualTo(expected.Salary));
+            Assert.That(actual.IsActual, Is.EqualTo(expected.IsActual));
+        });
+    }
+
+    private static PostDataModel CreateModel(string postId, string postName = "test", PostType postType = PostType.Builder, double salary = 10, bool isActual = false, DateTime? changeDate = null)
+        => new(postId, postName, postType, salary, isActual, changeDate ?? DateTime.UtcNow);
+
+    private Post? GetPostFromDatabaseByPostId(string id) => FurnitureAssemblyDbContext.Posts
+        .Where(x => x.PostId == id).OrderByDescending(x => x.ChangeDate).FirstOrDefault();
+
+    private static void AssertElement(Post? actual, PostDataModel expected)
+    {
+        Assert.That(actual, Is.Not.Null);
+        Assert.Multiple(() =>
+        {
+            Assert.That(actual.PostId, Is.EqualTo(expected.Id));
+            Assert.That(actual.PostName, Is.EqualTo(expected.PostName));
+            Assert.That(actual.PostType, Is.EqualTo(expected.PostType));
+            Assert.That(actual.Salary, Is.EqualTo(expected.Salary));
+            Assert.That(actual.IsActual, Is.EqualTo(expected.IsActual));
+        });
+    }
+}

FurnitureAssembly/FurnitureAssemblyTests/StorageContractTests/SalaryStorageContractTests.cs

@@ -0,0 +1,168 @@
+using FurnitureAssemblyContracts.DataModels;
+using FurnitureAssemblyDatebase;
+using FurnitureAssemblyDatebase.Implementations;
+using FurnitureAssemblyDatebase.Models;
+using Microsoft.EntityFrameworkCore;
+
+namespace FurnitureAssemblyTests.StorageContractTests;
+
+[TestFixture]
+internal class SalaryStorageContractTests : BaseStorageContractTest
+{
+    private SalaryStorageContract _salaryStorageContract;
+    private Worker _worker;
+
+    [SetUp]
+    public void SetUp()
+    {
+        _salaryStorageContract = new SalaryStorageContract(FurnitureAssemblyDbContext);
+        _worker = InsertWorkerToDatabaseAndReturn();
+    }
+
+    [TearDown]
+    public void TearDown()
+    {
+        FurnitureAssemblyDbContext.Database.ExecuteSqlRaw("TRUNCATE \"Salaries\"CASCADE; ");
+        FurnitureAssemblyDbContext.Database.ExecuteSqlRaw("TRUNCATE \"Workers\"CASCADE; ");
+    }
+
+    [Test]
+    public void Try_GetList_WhenHaveRecords_Test()
+    {
+        var salary = InsertSalaryToDatabaseAndReturn(_worker.Id, workerSalary: 100);
+        InsertSalaryToDatabaseAndReturn(_worker.Id);
+        InsertSalaryToDatabaseAndReturn(_worker.Id);
+        var list = _salaryStorageContract.GetList(DateTime.UtcNow.AddDays(-10), DateTime.UtcNow.AddDays(10));
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(3));
+        AssertElement(list.First(), salary);
+    }
+
+    [Test]
+    public void Try_GetList_WhenNoRecords_Test()
+    {
+        var list = _salaryStorageContract.GetList(DateTime.UtcNow.AddDays(-10), DateTime.UtcNow.AddDays(10));
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Is.Empty);
+    }
+
+    [Test]
+    public void Try_GetList_OnlyInDatePeriod_Test()
+    {
+        InsertSalaryToDatabaseAndReturn(_worker.Id, salaryDate: DateTime.UtcNow.AddDays(-2));
+        InsertSalaryToDatabaseAndReturn(_worker.Id, salaryDate: DateTime.UtcNow.AddDays(-1).AddMinutes(-5));
+        InsertSalaryToDatabaseAndReturn(_worker.Id, salaryDate: DateTime.UtcNow.AddDays(-1).AddMinutes(5));
+        InsertSalaryToDatabaseAndReturn(_worker.Id, salaryDate: DateTime.UtcNow.AddDays(1).AddMinutes(-5));
+        InsertSalaryToDatabaseAndReturn(_worker.Id, salaryDate: DateTime.UtcNow.AddDays(1).AddMinutes(5));
+        InsertSalaryToDatabaseAndReturn(_worker.Id, salaryDate: DateTime.UtcNow.AddDays(-2));
+        var list = _salaryStorageContract.GetList(DateTime.UtcNow.AddDays(-1), DateTime.UtcNow.AddDays(1));
+        Assert.That(list, Is.Not.Null);
+        Assert.Multiple(() =>
+        {
+            Assert.That(list, Has.Count.EqualTo(2));
+        });
+    }
+
+    [Test]
+    public void Try_GetList_ByWorker_Test()
+    {
+        var worker = InsertWorkerToDatabaseAndReturn("name 2");
+        InsertSalaryToDatabaseAndReturn(_worker.Id);
+        InsertSalaryToDatabaseAndReturn(_worker.Id);
+        InsertSalaryToDatabaseAndReturn(worker.Id);
+        var list = _salaryStorageContract.GetList(DateTime.UtcNow.AddDays(-
+        1), DateTime.UtcNow.AddDays(1), _worker.Id);
+        Assert.That(list, Is.Not.Null);
+        Assert.Multiple(() =>
+        {
+            Assert.That(list, Has.Count.EqualTo(2));
+            Assert.That(list.All(x => x.WorkerId == _worker.Id));
+        });
+    }
+
+    [Test]
+    public void Try_GetList_ByWorkerOnlyInDatePeriod_Test()
+    {
+        var worker = InsertWorkerToDatabaseAndReturn("name 2");
+        InsertSalaryToDatabaseAndReturn(_worker.Id, salaryDate:
+        DateTime.UtcNow.AddDays(-2));
+        InsertSalaryToDatabaseAndReturn(_worker.Id, salaryDate:
+        DateTime.UtcNow.AddDays(-1).AddMinutes(5));
+        InsertSalaryToDatabaseAndReturn(worker.Id, salaryDate:
+        DateTime.UtcNow.AddDays(-1).AddMinutes(5));
+        InsertSalaryToDatabaseAndReturn(_worker.Id, salaryDate:
+        DateTime.UtcNow.AddDays(1).AddMinutes(-5));
+        InsertSalaryToDatabaseAndReturn(worker.Id, salaryDate:
+        DateTime.UtcNow.AddDays(1).AddMinutes(-5));
+        InsertSalaryToDatabaseAndReturn(_worker.Id, salaryDate:
+        DateTime.UtcNow.AddDays(-2));
+        var list = _salaryStorageContract.GetList(DateTime.UtcNow.AddDays(-
+        1), DateTime.UtcNow.AddDays(1), _worker.Id);
+        Assert.That(list, Is.Not.Null);
+        Assert.Multiple(() =>
+        {
+            Assert.That(list, Has.Count.EqualTo(2));
+            Assert.That(list.All(x => x.WorkerId == _worker.Id));
+        });
+    }
+
+    [Test]
+    public void Try_AddElement_Test()
+    {
+        var salary = CreateModel(_worker.Id);
+        _salaryStorageContract.AddElement(salary);
+        AssertElement(GetSalaryFromDatabaseByWorkerId(_worker.Id), salary);
+    }
+
+    private Worker InsertWorkerToDatabaseAndReturn(string workerFIO = "fio")
+    {
+        var worker = new Worker()
+        {
+            Id = Guid.NewGuid().ToString(),
+            PostId = Guid.NewGuid().ToString(),
+            FIO = workerFIO,
+            IsDeleted = false
+        };
+        FurnitureAssemblyDbContext.Workers.Add(worker);
+        FurnitureAssemblyDbContext.SaveChanges();
+        return worker;
+    }
+
+    private Salary InsertSalaryToDatabaseAndReturn(string workerId, double
+    workerSalary = 1, DateTime? salaryDate = null)
+    {
+        var salary = new Salary()
+        {
+            WorkerId = workerId,
+            WorkerSalary = workerSalary,
+            SalaryDate = salaryDate ?? DateTime.UtcNow
+        };
+        FurnitureAssemblyDbContext.Salaries.Add(salary);
+        FurnitureAssemblyDbContext.SaveChanges();
+        return salary;
+    }
+
+    private static void AssertElement(SalaryDataModel? actual, Salary expected)
+    {
+        Assert.That(actual, Is.Not.Null);
+        Assert.Multiple(() =>
+        {
+            Assert.That(actual.WorkerId, Is.EqualTo(expected.WorkerId));
+            Assert.That(actual.Salary, Is.EqualTo(expected.WorkerSalary));
+        });
+    }
+    private static SalaryDataModel CreateModel(string workerId, double workerSalary = 1, DateTime? salaryDate = null)
+                    => new(workerId, salaryDate ?? DateTime.UtcNow, workerSalary);
+
+    private Salary? GetSalaryFromDatabaseByWorkerId(string id) => FurnitureAssemblyDbContext.Salaries.FirstOrDefault(x => x.WorkerId == id);
+
+    private static void AssertElement(Salary? actual, SalaryDataModel expected)
+    {
+        Assert.That(actual, Is.Not.Null);
+        Assert.Multiple(() =>
+        {
+            Assert.That(actual.WorkerId, Is.EqualTo(expected.WorkerId));
+            Assert.That(actual.WorkerSalary, Is.EqualTo(expected.Salary));
+        });
+    }
+}

FurnitureAssembly/FurnitureAssemblyTests/StorageContractTests/WorkerStorageContractTests.cs

@@ -0,0 +1,247 @@
+using FurnitureAssemblyContracts.DataModels;
+using FurnitureAssemblyContracts.Exceptions;
+using FurnitureAssemblyDatebase.Implementations;
+using FurnitureAssemblyDatebase.Models;
+using Microsoft.EntityFrameworkCore;
+
+namespace FurnitureAssemblyTests.StorageContractTests;
+
+[TestFixture]
+internal class WorkerStorageContractTests : BaseStorageContractTest
+{
+    private WorkerStorageContract _workerStorageContract;
+
+    [SetUp]
+    public void SetUp()
+    {
+        _workerStorageContract = new WorkerStorageContract(FurnitureAssemblyDbContext);
+    }
+
+    [TearDown]
+    public void TearDown()
+    {
+        FurnitureAssemblyDbContext.Database.ExecuteSqlRaw("TRUNCATE \"Workers\"CASCADE; ");
+    }
+
+    [Test]
+    public void Try_GetList_WhenHaveRecords_Test()
+    {
+        var worker = InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString(), "fio 1");
+        InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString(), "fio 2");
+        InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString(), "fio 3");
+        var list = _workerStorageContract.GetList();
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(3));
+        AssertElement(list.First(), worker);
+    }
+
+    [Test]
+    public void Try_GetList_WhenNoRecords_Test()
+    {
+        var list = _workerStorageContract.GetList();
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Is.Empty);
+    }
+
+    [Test]
+    public void Try_GetList_ByPostId_Test()
+    {
+        var postId = Guid.NewGuid().ToString();
+        InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString(), "fio 1",
+        postId);
+        InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString(), "fio 2",
+        postId);
+        InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString(), "fio 3");
+        var list = _workerStorageContract.GetList(postId: postId);
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(2));
+        Assert.That(list.All(x => x.PostId == postId));
+    }
+
+    [Test]
+    public void Try_GetList_ByBirthDate_Test()
+    {
+        InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString(), "fio 1",
+        birthDate: DateTime.UtcNow.AddYears(-25));
+        InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString(), "fio 2",
+        birthDate: DateTime.UtcNow.AddYears(-21));
+        InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString(), "fio 3",
+        birthDate: DateTime.UtcNow.AddYears(-20));
+        InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString(), "fio 4",
+        birthDate: DateTime.UtcNow.AddYears(-19));
+        var list = _workerStorageContract.GetList(fromBirthDate: DateTime.UtcNow.AddYears(-21).AddMinutes(-1), toBirthDate: DateTime.UtcNow.AddYears(-20).AddMinutes(1));
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(2));
+    }
+
+    [Test]
+    public void Try_GetList_ByEmploymentDate_Test()
+    {
+        InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString(), "fio 1",
+        employmentDate: DateTime.UtcNow.AddDays(-2));
+        InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString(), "fio 2",
+        employmentDate: DateTime.UtcNow.AddDays(-1));
+        InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString(), "fio 3",
+        employmentDate: DateTime.UtcNow.AddDays(1));
+        InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString(), "fio 4",
+        employmentDate: DateTime.UtcNow.AddDays(2));
+        var list = _workerStorageContract.GetList(fromEmploymentDate: DateTime.UtcNow.AddDays(-1).AddMinutes(-1), toEmploymentDate: DateTime.UtcNow.AddDays(1).AddMinutes(1));
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(2));
+    }
+
+    [Test]
+    public void Try_GetList_ByAllParameters_Test()
+    {
+        var postId = Guid.NewGuid().ToString();
+        InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString(), "fio 1", postId, birthDate: DateTime.UtcNow.AddYears(-25), employmentDate: DateTime.UtcNow.AddDays(-2));
+        InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString(), "fio 2", postId, birthDate: DateTime.UtcNow.AddYears(-22), employmentDate: DateTime.UtcNow.AddDays(-1));
+        InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString(), "fio 3", postId, birthDate: DateTime.UtcNow.AddYears(-21), employmentDate: DateTime.UtcNow.AddDays(-1));
+        InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString(), "fio 4", birthDate: DateTime.UtcNow.AddYears(-20), employmentDate: DateTime.UtcNow.AddDays(1));
+        var list = _workerStorageContract.GetList(postId: postId, fromBirthDate: DateTime.UtcNow.AddYears(-21).AddMinutes(-1),
+            toBirthDate: DateTime.UtcNow.AddYears(-20).AddMinutes(1), fromEmploymentDate: DateTime.UtcNow.AddDays(-1).AddMinutes(-1),
+            toEmploymentDate: DateTime.UtcNow.AddDays(1).AddMinutes(1));
+        Assert.That(list, Is.Not.Null);
+        Assert.That(list, Has.Count.EqualTo(1));
+    }
+
+    [Test]
+    public void Try_GetElementById_WhenHaveRecord_Test()
+    {
+        var worker = InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString());
+        AssertElement(_workerStorageContract.GetElementById(worker.Id), worker);
+    }
+
+    [Test]
+    public void Try_GetElementById_WhenNoRecord_Test()
+    {
+        Assert.That(() => _workerStorageContract.GetElementById(Guid.NewGuid().ToString()), Is.Null);
+    }
+
+    [Test]
+    public void Try_GetElementByFIO_WhenHaveRecord_Test()
+    {
+        var worker = InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString());
+        AssertElement(_workerStorageContract.GetElementByFIO(worker.FIO), worker);
+    }
+
+    [Test]
+    public void Try_GetElementByFIO_WhenNoRecord_Test()
+    {
+        Assert.That(() => _workerStorageContract.GetElementByFIO("New Fio"), Is.Null);
+    }
+
+    [Test]
+    public void Try_AddElement_Test()
+    {
+        var worker = CreateModel(Guid.NewGuid().ToString());
+        _workerStorageContract.AddElement(worker);
+        AssertElement(GetWorkerFromDatabase(worker.Id), worker);
+    }
+
+    [Test]
+    public void Try_AddElement_WhenHaveRecordWithSameId_Test()
+    {
+        var worker = CreateModel(Guid.NewGuid().ToString());
+        InsertWorkerToDatabaseAndReturn(worker.Id);
+        Assert.That(() => _workerStorageContract.AddElement(worker), Throws.TypeOf<ElementExistsException>());
+    }
+
+    [Test]
+    public void Try_UpdElement_Test()
+    {
+        var worker = CreateModel(Guid.NewGuid().ToString(), "New Fio");
+        InsertWorkerToDatabaseAndReturn(worker.Id);
+        _workerStorageContract.UpdElement(worker);
+        AssertElement(GetWorkerFromDatabase(worker.Id), worker);
+    }
+
+    [Test]
+    public void Try_UpdElement_WhenNoRecordWithThisId_Test()
+    {
+        Assert.That(() => _workerStorageContract.UpdElement(CreateModel(Guid.NewGuid().ToString())),
+        Throws.TypeOf<ElementNotFoundException>());
+    }
+
+    [Test]
+    public void Try_UpdElement_WhenNoRecordWasDeleted_Test()
+    {
+        var worker = CreateModel(Guid.NewGuid().ToString());
+        InsertWorkerToDatabaseAndReturn(worker.Id, isDeleted: true);
+        Assert.That(() => _workerStorageContract.UpdElement(worker),
+        Throws.TypeOf<ElementNotFoundException>());
+    }
+
+    [Test]
+    public void Try_DelElement_Test()
+    {
+        var worker = InsertWorkerToDatabaseAndReturn(Guid.NewGuid().ToString());
+        _workerStorageContract.DelElement(worker.Id);
+        var element = GetWorkerFromDatabase(worker.Id);
+        Assert.That(element, Is.Not.Null);
+        Assert.That(element.IsDeleted);
+    }
+
+    [Test]
+    public void Try_DelElement_WhenNoRecordWithThisId_Test()
+    {
+        Assert.That(() => _workerStorageContract.DelElement(Guid.NewGuid().ToString()),
+        Throws.TypeOf<ElementNotFoundException>());
+    }
+
+    [Test]
+    public void Try_DelElement_WhenNoRecordWasDeleted_Test()
+    {
+        var worker = CreateModel(Guid.NewGuid().ToString());
+        InsertWorkerToDatabaseAndReturn(worker.Id, isDeleted: true);
+        Assert.That(() => _workerStorageContract.DelElement(worker.Id), Throws.TypeOf<ElementNotFoundException>());
+    }
+
+    private Worker InsertWorkerToDatabaseAndReturn(string id, string fio = "test", string? postId = null, DateTime? birthDate = null, DateTime? employmentDate = null, bool isDeleted = false)
+    {
+        var worker = new Worker()
+        {
+            Id = id,
+            FIO = fio,
+            PostId = postId ?? Guid.NewGuid().ToString(),
+            BirthDate = birthDate ?? DateTime.UtcNow.AddYears(-20),
+            EmploymentDate = employmentDate ?? DateTime.UtcNow,
+            IsDeleted = isDeleted
+        };
+        FurnitureAssemblyDbContext.Workers.Add(worker);
+        FurnitureAssemblyDbContext.SaveChanges();
+        return worker;
+    }
+    private static void AssertElement(WorkerDataModel? actual, Worker expected)
+    {
+        Assert.That(actual, Is.Not.Null);
+        Assert.Multiple(() =>
+        {
+            Assert.That(actual.Id, Is.EqualTo(expected.Id));
+            Assert.That(actual.PostId, Is.EqualTo(expected.PostId));
+            Assert.That(actual.FIO, Is.EqualTo(expected.FIO));
+            Assert.That(actual.BirthDate, Is.EqualTo(expected.BirthDate));
+            Assert.That(actual.EmploymentDate,
+            Is.EqualTo(expected.EmploymentDate));
+            Assert.That(actual.IsDeleted, Is.EqualTo(expected.IsDeleted));
+        });
+    }
+    private static WorkerDataModel CreateModel(string id, string fio = "fio", string? postId = null, DateTime? birthDate = null, DateTime? employmentDate = null, bool isDeleted = false) =>
+        new(id, fio, postId ?? Guid.NewGuid().ToString(), birthDate ?? DateTime.UtcNow.AddYears(-20), employmentDate ?? DateTime.UtcNow, isDeleted);
+
+    private Worker? GetWorkerFromDatabase(string id) => FurnitureAssemblyDbContext.Workers.FirstOrDefault(x => x.Id == id);
+
+    private static void AssertElement(Worker? actual, WorkerDataModel expected)
+    {
+        Assert.That(actual, Is.Not.Null);
+        Assert.Multiple(() =>
+        {
+            Assert.That(actual.Id, Is.EqualTo(expected.Id));
+            Assert.That(actual.PostId, Is.EqualTo(expected.PostId));
+            Assert.That(actual.FIO, Is.EqualTo(expected.FIO));
+            Assert.That(actual.BirthDate, Is.EqualTo(expected.BirthDate));
+            Assert.That(actual.EmploymentDate,Is.EqualTo(expected.EmploymentDate));
+            Assert.That(actual.IsDeleted, Is.EqualTo(expected.IsDeleted));
+        });
+    }
+}