Лабораторная работа 1. Добавлены компоненты и изменены классы продуктов

NorthBridge/NorthBridge.sln

@@ -3,7 +3,12 @@ Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio Version 17
 VisualStudioVersion = 17.10.35013.160
 MinimumVisualStudioVersion = 10.0.40219.1
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NorthBridgeContract", "NorthBridgeContract\NorthBridgeContract.csproj", "{28744C88-4DE9-429F-83DA-CA3670CE2D70}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "NorthBridgeContract", "NorthBridgeContract\NorthBridgeContract.csproj", "{28744C88-4DE9-429F-83DA-CA3670CE2D70}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NorthBridgeTest", "NorthBridgeTest\NorthBridgeTest.csproj", "{0105777C-5918-452B-9321-ECAEB1767753}"
+	ProjectSection(ProjectDependencies) = postProject
+		{28744C88-4DE9-429F-83DA-CA3670CE2D70} = {28744C88-4DE9-429F-83DA-CA3670CE2D70}
+	EndProjectSection
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -15,6 +20,10 @@ Global
 		{28744C88-4DE9-429F-83DA-CA3670CE2D70}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{28744C88-4DE9-429F-83DA-CA3670CE2D70}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{28744C88-4DE9-429F-83DA-CA3670CE2D70}.Release|Any CPU.Build.0 = Release|Any CPU
+		{0105777C-5918-452B-9321-ECAEB1767753}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{0105777C-5918-452B-9321-ECAEB1767753}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{0105777C-5918-452B-9321-ECAEB1767753}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{0105777C-5918-452B-9321-ECAEB1767753}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

NorthBridge/NorthBridgeContract/DataModels/BuyerDataModel.cs

@@ -0,0 +1,36 @@
+using NorthBridgeContract.Exceptions;
+using NorthBridgeContract.Extensions;
+using NorthBridgeContract.Infrastructure;
+using System.Text.RegularExpressions;
+
+namespace NorthBridgeContract.DataModels;
+
+public class BuyerDataModel(string id, string fio, string phoneNumber) : IValidation
+{
+	public string Id { get; private set; } = id;
+
+	public string FIO { get; private set; } = fio;
+
+	public string PhoneNumber { get; private set; } = phoneNumber;
+
+	public void Validate()
+	{
+		if (Id.IsEmpty())
+			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 (FIO.IsEmpty())
+			throw new ValidationException("Field FIO is empty");
+
+		if (PhoneNumber.IsEmpty())
+			throw new ValidationException("Field PhoneNumber is empty");
+
+		if (!Regex.IsMatch(PhoneNumber, @"^((8|\+7)[\- ]?)?(\(?\d{3}\)?[\- ]?)?[\d\- ]{7,10}$"))
+			throw new ValidationException("Field PhoneNumber is not a phone number");
+
+		if (!Regex.IsMatch(FIO, @"^[А-ЯЁ][а-яё]+(?:-[А-ЯЁ][а-яё]+)?\s[А-ЯЁ][а-яё]+(?:\s[А-ЯЁ][а-яё]+)?$"))
+			throw new ValidationException("Field FIO is not a fio");
+	}
+}

NorthBridge/NorthBridgeContract/DataModels/ComponentDataModel.cs

@@ -0,0 +1,45 @@
+using NorthBridgeContract.Enums;
+using NorthBridgeContract.Exceptions;
+using NorthBridgeContract.Extensions;
+using NorthBridgeContract.Infrastructure;
+
+namespace NorthBridgeContract.DataModels;
+
+public class ComponentDataModel(string id, string componentName, ComponentType componentType, string manufacturerId, double price, bool isDeleted) : IValidation
+{
+	public string Id { get; private set; } = id;
+
+	public string ComponentName { get; private set; } = componentName;
+
+	public ComponentType ComponentType { get; private set; } = componentType;
+
+	public string ManufacturerId { get; private set; } = manufacturerId;
+
+	public double Price { get; private set; } = price;
+
+	public bool IsDeleted { get; private set; } = isDeleted;
+
+	public void Validate()
+	{
+		if (Id.IsEmpty())
+			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 (ComponentName.IsEmpty())
+			throw new ValidationException("Field ProductName is empty");
+
+		if (ComponentType == ComponentType.None)
+			throw new ValidationException("Field ProductType is empty");
+
+		if (ManufacturerId.IsEmpty())
+			throw new ValidationException("Field ManufacturerId is empty");
+
+		if (!ManufacturerId.IsGuid())
+			throw new ValidationException("The value in the field ManufacturerId is not a unique identifier");
+
+		if (Price <= 0)
+			throw new ValidationException("Field Price is less than or equal to 0");
+	}
+}

NorthBridge/NorthBridgeContract/DataModels/ComponentHistoryDataModel.cs

@@ -0,0 +1,26 @@
+using NorthBridgeContract.Exceptions;
+using NorthBridgeContract.Extensions;
+using NorthBridgeContract.Infrastructure;
+
+namespace NorthBridgeContract.DataModels;
+
+public class ComponentHistoryDataModel(string componentId, double oldPrice) : IValidation
+{
+	public string ComponentId { get; private set; } = componentId;
+
+	public double OldPrice { get; private set; } = oldPrice;
+
+	public DateTime ChangeDate { get; private set; } = DateTime.UtcNow;
+
+	public void Validate()
+	{
+		if (ComponentId.IsEmpty())
+			throw new ValidationException("Field ComponentId is empty");
+
+		if (!ComponentId.IsGuid())
+			throw new ValidationException("The value in the field ComponentId is not a unique identifier");
+
+		if (OldPrice <= 0)
+			throw new ValidationException("Field OldPrice is less than or equal to 0");
+	}
+}

NorthBridge/NorthBridgeContract/DataModels/ComponentInProductDataModel.cs

@@ -0,0 +1,28 @@
+using NorthBridgeContract.Exceptions;
+using NorthBridgeContract.Extensions;
+using NorthBridgeContract.Infrastructure;
+
+namespace NorthBridgeContract.DataModels
+{
+    public class ComponentInProductDataModel(string componentId, string productId) : IValidation
+    {
+        public string ComponentId { get; private set; } = componentId;
+        public string ProductId { get; private set;} = productId;
+
+        public void Validate()
+        {
+            if (ComponentId.IsEmpty())
+                throw new ValidationException("Field ComponentId is empty");
+
+            if (!ComponentId.IsGuid())
+                throw new ValidationException("The value in the field ComponentId is not a unique identifier");
+
+            if (ProductId.IsEmpty())
+                throw new ValidationException("Field ProductId is empty");
+
+            if (!ProductId.IsGuid())
+                throw new ValidationException("The value in the field ProductId is not a unique identifier");
+
+        }
+    }
+}

NorthBridge/NorthBridgeContract/DataModels/ManufacturerDataModel.cs

@@ -0,0 +1,28 @@
+using NorthBridgeContract.Exceptions;
+using NorthBridgeContract.Extensions;
+using NorthBridgeContract.Infrastructure;
+
+namespace NorthBridgeContract.DataModels;
+
+public class ManufacturerDataModel(string id, string manufacturerName, string? prevManufacturerName, string? prevPrevManufacturerName) : IValidation
+{
+	public string Id { get; private set; } = id;
+
+	public string ManufacturerName { get; private set; } = manufacturerName;
+
+	public string? PrevManufacturerName { get; private set; } = prevManufacturerName;
+
+	public string? PrevPrevManufacturerName { get; private set; } = prevPrevManufacturerName;
+
+	public void Validate()
+	{
+		if (Id.IsEmpty())
+			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 (ManufacturerName.IsEmpty())
+			throw new ValidationException("Field ManufacturerName is empty");
+	}
+}

NorthBridge/NorthBridgeContract/DataModels/PostDataModel.cs

@@ -0,0 +1,47 @@
+using NorthBridgeContract.Enums;
+using NorthBridgeContract.Exceptions;
+using NorthBridgeContract.Extensions;
+using NorthBridgeContract.Infrastructure;
+
+namespace NorthBridgeContract.DataModels;
+
+public class PostDataModel(string id, 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 PostName { get; private set; } = postName;
+
+	public PostType PostType { get; private set; } = postType;
+
+	public double Salary { get; private set; } = salary;
+
+	public bool IsActual { get; private set; } = isActual;
+
+	public DateTime ChangeDate { get; private set; } = changeDate;
+
+	public void Validate()
+	{
+		if (Id.IsEmpty())
+			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)
+			throw new ValidationException("Field PostType is empty");
+
+		if (Salary <= 0)
+			throw new ValidationException("Field Salary is empty");
+	}
+}

NorthBridge/NorthBridgeContract/DataModels/ProductDataModel.cs

@@ -0,0 +1,47 @@
+using NorthBridgeContract.Exceptions;
+using NorthBridgeContract.Extensions;
+using NorthBridgeContract.Infrastructure;
+
+namespace NorthBridgeContract.DataModels;
+
+public class ProductDataModel(string id, string productName, string workerId, bool isDeleted, List<ComponentDataModel> components) : IValidation
+{
+	public string Id { get; private set; } = id;
+
+	public string ProductName { get; private set; } = productName;
+
+	public string WorkerId { get; private set; } = workerId;
+
+	public bool IsDeleted { get; private set; } = isDeleted;
+
+	public List<ComponentDataModel> Components { get; private set; } = components;
+
+	public double TotalPrice => Components.Sum(x => x.Price);
+
+    public void Validate()
+	{
+		if (Id.IsEmpty())
+			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 (ProductName.IsEmpty())
+			throw new ValidationException("Field ProductName is empty");
+
+		if (WorkerId.IsEmpty())
+			throw new ValidationException("Field ManufacturerId is empty");
+
+		if (!WorkerId.IsGuid())
+			throw new ValidationException("The value in the field ManufacturerId is not a unique identifier");
+
+		if (TotalPrice <= 0)
+			throw new ValidationException("Field Price is less than or equal to 0");
+
+		if (TotalPrice != Components.Sum(x => x.Price))
+            throw new ValidationException("The total price of the components does not match");
+
+        if (Components.Count == 0)
+            throw new ValidationException("At least 1 component is needed");
+    }
+}

NorthBridge/NorthBridgeContract/DataModels/ProductOnStorageDataModel.cs

@@ -0,0 +1,33 @@
+using NorthBridgeContract.Exceptions;
+using NorthBridgeContract.Extensions;
+using NorthBridgeContract.Infrastructure;
+
+namespace NorthBridgeContract.DataModels
+{
+    public class ProductOnStorageDataModel(string storageId, string productId, int count) : IValidation
+    {
+        public string StorageId { get; private set; } = storageId;
+
+        public string ProductId { get; private set; } = productId;
+
+        public int Count { get; private set; } = count;
+
+        public void Validate()
+        {
+            if (StorageId.IsEmpty())
+                throw new ValidationException("Field StorageId is empty");
+
+            if (!StorageId.IsGuid())
+                throw new ValidationException("The value in the field StorageId is not a unique identifier");
+
+            if (ProductId.IsEmpty())
+                throw new ValidationException("Field ProductId is empty");
+
+            if (!ProductId.IsGuid())
+                throw new ValidationException("The value in the field ProductId is not a unique identifier");
+
+            if (Count <= 0)
+                throw new ValidationException("Field Count is less than or equal to 0");
+        }
+    }
+}

NorthBridge/NorthBridgeContract/DataModels/ProductsInSupplyDataModel.cs

@@ -0,0 +1,32 @@
+using NorthBridgeContract.Exceptions;
+using NorthBridgeContract.Extensions;
+
+namespace NorthBridgeContract.DataModels
+{
+    public class ProductsInSupplyDataModel(string supplyId, string productId, int count)
+    {
+        public string SupplyId { get; private set; } = supplyId;
+
+        public string ProductId { get; private set; } = productId;
+
+        public int Count { get; private set; } = count;
+
+        public void Validate()
+        {
+            if (SupplyId.IsEmpty())
+                throw new ValidationException("Field SupplyId is empty");
+
+            if (!SupplyId.IsGuid())
+                throw new ValidationException("The value in the field SupplyId is not a unique identifier");
+
+            if (ProductId.IsEmpty())
+                throw new ValidationException("Field ProductId is empty");
+
+            if (!ProductId.IsGuid())
+                throw new ValidationException("The value in the field ProductId is not a unique identifier");
+
+            if (Count <= 0)
+                throw new ValidationException("Field Count is less than or equal to 0");
+        }
+    }
+}

NorthBridge/NorthBridgeContract/DataModels/SalaryDataModel.cs

@@ -0,0 +1,26 @@
+using NorthBridgeContract.Exceptions;
+using NorthBridgeContract.Extensions;
+using NorthBridgeContract.Infrastructure;
+
+namespace NorthBridgeContract.DataModels;
+
+public class SalaryDataModel(string workerId, DateTime salaryDate, double workerSalary) : IValidation
+{
+	public string WorkerId { get; private set; } = workerId;
+
+	public DateTime SalaryDate { get; private set; } = salaryDate;
+
+	public double Salary { get; private set; } = workerSalary;
+
+	public void Validate()
+	{
+		if (WorkerId.IsEmpty())
+			throw new ValidationException("Field WorkerId is empty");
+
+		if (!WorkerId.IsGuid())
+			throw new ValidationException("The value in the field WorkerId is not a unique identifier");
+
+		if (Salary <= 0)
+			throw new ValidationException("Field Salary is less than or equal to 0");
+	}
+}

NorthBridge/NorthBridgeContract/DataModels/SaleDataModel.cs

@@ -0,0 +1,47 @@
+using NorthBridgeContract.Enums;
+using NorthBridgeContract.Exceptions;
+using NorthBridgeContract.Extensions;
+using NorthBridgeContract.Infrastructure;
+
+namespace NorthBridgeContract.DataModels;
+
+public class SaleDataModel(string id, string workerId, string? buyerId, double sum, bool isCancel, List<SaleProductDataModel> products) : IValidation
+{
+	public string Id { get; private set; } = id;
+
+	public string WorkerId { get; private set; } = workerId;
+
+	public string? BuyerId { get; private set; } = buyerId;
+
+	public DateTime SaleDate { get; private set; } = DateTime.UtcNow;
+
+	public double Sum { get; private set; } = sum;
+
+	public bool IsCancel { get; private set; } = isCancel;
+
+	public List<SaleProductDataModel> Products { get; private set; } = products;
+
+	public void Validate()
+	{
+		if (Id.IsEmpty())
+			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 (WorkerId.IsEmpty())
+			throw new ValidationException("Field WorkerId is empty");
+
+		if (!WorkerId.IsGuid())
+			throw new ValidationException("The value in the field WorkerId is not a unique identifier");
+
+		if (!BuyerId?.IsGuid() ?? !BuyerId?.IsEmpty() ?? false)
+			throw new ValidationException("The value in the field BuyerId is not a unique identifier");
+
+		if (Sum <= 0)
+			throw new ValidationException("Field Sum is less than or equal to 0");
+
+		if ((Products?.Count ?? 0) == 0)
+			throw new ValidationException("The sale must include products");
+	}
+}

NorthBridge/NorthBridgeContract/DataModels/SaleProductDataModel.cs

@@ -0,0 +1,32 @@
+using NorthBridgeContract.Exceptions;
+using NorthBridgeContract.Extensions;
+using NorthBridgeContract.Infrastructure;
+
+namespace NorthBridgeContract.DataModels;
+
+public class SaleProductDataModel(string saleId, string productId, int count) : IValidation
+{
+	public string SaleId { get; private set; } = saleId;
+
+	public string ProductId { get; private set; } = productId;
+
+	public int Count { get; private set; } = count;
+
+	public void Validate()
+	{
+		if (SaleId.IsEmpty())
+			throw new ValidationException("Field SaleId is empty");
+
+		if (!SaleId.IsGuid())
+			throw new ValidationException("The value in the field SaleId is not a unique identifier");
+
+		if (ProductId.IsEmpty())
+			throw new ValidationException("Field ProductId is empty");
+
+		if (!ProductId.IsGuid())
+			throw new ValidationException("The value in the field ProductId is not a unique identifier");
+
+		if (Count <= 0)
+			throw new ValidationException("Field Count is less than or equal to 0");
+	}
+}

NorthBridge/NorthBridgeContract/DataModels/StorageDataModel.cs

@@ -0,0 +1,24 @@
+using NorthBridgeContract.Exceptions;
+using NorthBridgeContract.Extensions;
+using NorthBridgeContract.Infrastructure;
+
+namespace NorthBridgeContract.DataModels
+{
+    public class StorageDataModel(string id, string address) : IValidation
+    {
+	    public string Id { get; private set; } = id;
+	    public string Address { get; private set; } = address;
+
+        public void Validate()
+        {
+            if (Id.IsEmpty())
+                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 (Address.IsEmpty())
+                throw new ValidationException("Field Address is empty");
+        }
+    }
+}

NorthBridge/NorthBridgeContract/DataModels/SupplyDataModel.cs

@@ -0,0 +1,33 @@
+using NorthBridgeContract.Exceptions;
+using NorthBridgeContract.Extensions;
+using NorthBridgeContract.Infrastructure;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace NorthBridgeContract.DataModels
+{
+    public class SupplyDataModel(string id, string storageId, DateTime date) : IValidation
+    {
+        public string Id { get; private set; } = id;
+        public string StorageId { get; private set; } = storageId;
+        public DateTime Date { get; private set; } = date;
+
+        public void Validate()
+        {
+            if (StorageId.IsEmpty())
+                throw new ValidationException("Field StorageId is empty");
+
+            if (!StorageId.IsGuid())
+                throw new ValidationException("The value in the field StorageId is not a unique identifier");
+
+            if (Id.IsEmpty())
+                throw new ValidationException("Field Id is empty");
+
+            if (!Id.IsGuid())
+                throw new ValidationException("The value in the field Id is not a unique identifier");
+        }
+    }
+}

NorthBridge/NorthBridgeContract/DataModels/WorkerDataModel.cs

@@ -0,0 +1,47 @@
+using NorthBridgeContract.Exceptions;
+using NorthBridgeContract.Extensions;
+using NorthBridgeContract.Infrastructure;
+
+namespace NorthBridgeContract.DataModels;
+
+public class WorkerDataModel(string id, string fio, string postId, DateTime birthDate, DateTime employmentDate, bool isDeleted) : IValidation
+{
+	public string Id { get; private set; } = id;
+
+	public string FIO { get; private set; } = fio;
+
+	public string PostId { get; private set; } = postId;
+
+	public DateTime BirthDate { get; private set; } = birthDate;
+
+	public DateTime EmploymentDate { get; private set; } = employmentDate;
+
+	public bool IsDeleted { get; private set; } = isDeleted;
+
+	public void Validate()
+	{
+		if (Id.IsEmpty())
+			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 (FIO.IsEmpty())
+			throw new ValidationException("Field FIO is empty");
+
+		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 (BirthDate.Date > DateTime.Now.AddYears(-16).Date)
+			throw new ValidationException($"Minors cannot be hired (BirthDate = {BirthDate.ToShortDateString()})");
+
+		if (EmploymentDate.Date < BirthDate.Date)
+			throw new ValidationException("The date of employment cannot be less than the date of birth");
+
+		if ((EmploymentDate - BirthDate).TotalDays / 365 < 16) // EmploymentDate.Year - BirthDate.Year
+			throw new ValidationException($"Minors cannot be hired (EmploymentDate - {EmploymentDate.ToShortDateString()}, BirthDate - {BirthDate.ToShortDateString()})");
+	}
+}

NorthBridge/NorthBridgeContract/Enums/ComponentType.cs

@@ -0,0 +1,14 @@
+namespace NorthBridgeContract.Enums;
+
+public enum ComponentType
+{
+    None = 0,
+    GraphicsCard = 1,
+    Motherboard = 2,
+    RAM = 3,
+    Storage = 4, 
+    PowerSupply = 5,
+    CoolingSystem = 6,
+    Case = 7,
+    Processor = 8
+}

NorthBridge/NorthBridgeContract/Enums/PostType.cs

@@ -0,0 +1,9 @@
+namespace NorthBridgeContract.Enums;
+
+public enum PostType
+{
+	None = 0,
+	Supervisor = 1,
+	CashierConsultant = 2,
+	Assistant = 3
+}

NorthBridge/NorthBridgeContract/Exceptions/ValidationException.cs

@@ -0,0 +1,5 @@
+namespace NorthBridgeContract.Exceptions;
+
+public class ValidationException(string message) : Exception(message)
+{
+}

NorthBridge/NorthBridgeContract/Extensions/StringExtensions.cs

@@ -0,0 +1,14 @@
+namespace NorthBridgeContract.Extensions;
+
+public static class StringExtensions
+{
+	public static bool IsEmpty(this string str)
+	{
+		return string.IsNullOrWhiteSpace(str);
+	}
+
+	public static bool IsGuid(this string str)
+	{
+		return Guid.TryParse(str, out _);
+	}
+}

NorthBridge/NorthBridgeContract/Infrastructure/IValidation.cs

@@ -0,0 +1,8 @@
+using NorthBridgeContract.Exceptions;
+
+namespace NorthBridgeContract.Infrastructure;
+
+public interface IValidation
+{
+	void Validate();
+}

NorthBridge/NorthBridgeTest/DataModelsTests/BuyerDataModelTests.cs

@@ -0,0 +1,69 @@
+using NorthBridgeContract.DataModels;
+using NorthBridgeContract.Exceptions;
+
+namespace NorthBridgeTest.DataModelsTests;
+
+[TestFixture]
+internal class BuyerDataModelTests
+{
+	[Test]
+	public void IdIsNullOrEmptyTest()
+	{
+		var buyer = CreateDataModel(null, "Иванов Иван Иванович", "number");
+		Assert.That(() => buyer.Validate(), Throws.TypeOf<ValidationException>());
+		buyer = CreateDataModel(string.Empty, "Иванов Иван Иванович", "number");
+		Assert.That(() => buyer.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void IdIsNotGuidTest()
+	{
+		var buyer = CreateDataModel("id", "Иванов Иван Иванович", "number");
+		Assert.That(() => buyer.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void FIOIsNullOrEmptyTest()
+	{
+		var buyer = CreateDataModel(Guid.NewGuid().ToString(), null, "number");
+		Assert.That(() => buyer.Validate(), Throws.TypeOf<ValidationException>());
+		buyer = CreateDataModel(Guid.NewGuid().ToString(), string.Empty, "number");
+		Assert.That(() => buyer.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void PhoneNumberIsNullOrEmptyTest()
+	{
+		var buyer = CreateDataModel(Guid.NewGuid().ToString(), "Иванов Иван Иванович", null);
+		Assert.That(() => buyer.Validate(), Throws.TypeOf<ValidationException>());
+		buyer = CreateDataModel(Guid.NewGuid().ToString(), "Иванов Иван Иванович", string.Empty);
+		Assert.That(() => buyer.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void PhoneNumberIsIncorrectTest()
+	{
+		var buyer = CreateDataModel(Guid.NewGuid().ToString(), "Иванов Иван Иванович", "777");
+		Assert.That(() => buyer.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void AllFieldsIsCorrectTest()
+	{
+		var buyerId = Guid.NewGuid().ToString();
+		var fio = "Иванов Иван Иванович";
+		var phoneNumber = "+7-777-777-77-77";
+		var buyer = CreateDataModel(buyerId, fio, phoneNumber);
+		Assert.That(() => buyer.Validate(), Throws.Nothing);
+		Assert.Multiple(() =>
+		{
+			Assert.That(buyer.Id, Is.EqualTo(buyerId));
+			Assert.That(buyer.FIO, Is.EqualTo(fio));
+			Assert.That(buyer.PhoneNumber, Is.EqualTo(phoneNumber));
+		});
+	}
+
+	private static BuyerDataModel CreateDataModel(string? id, string? fio, string? phoneNumber) =>
+		new(id, fio, phoneNumber);
+
+}

NorthBridge/NorthBridgeTest/DataModelsTests/ComponentDataModelTests.cs

@@ -0,0 +1,91 @@
+using NorthBridgeContract.DataModels;
+using NorthBridgeContract.Enums;
+using NorthBridgeContract.Exceptions;
+
+namespace NorthBridgeTest.DataModelsTests;
+
+[TestFixture]
+internal class ComponentDataModelTests
+{
+	[Test]
+	public void IdIsNullOrEmptyTest()
+	{
+		var component = CreateDataModel(null, "name", ComponentType.Processor, Guid.NewGuid().ToString(), 10, false);
+		Assert.That(() => component.Validate(), Throws.TypeOf<ValidationException>());
+		component = CreateDataModel(string.Empty, "name", ComponentType.Processor, Guid.NewGuid().ToString(), 10, false);
+		Assert.That(() => component.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void IdIsNotGuidTest()
+	{
+		var component = CreateDataModel("id", "name", ComponentType.Processor, Guid.NewGuid().ToString(), 10, false);
+		Assert.That(() => component.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void ComponentNameIsEmptyTest()
+	{
+		var component = CreateDataModel(Guid.NewGuid().ToString(), null, ComponentType.Processor, Guid.NewGuid().ToString(), 10, false);
+		Assert.That(() => component.Validate(), Throws.TypeOf<ValidationException>());
+		component = CreateDataModel(Guid.NewGuid().ToString(), string.Empty, ComponentType.Processor, Guid.NewGuid().ToString(), 10, false);
+		Assert.That(() => component.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void ComponentTypeIsNoneTest()
+	{
+		var component = CreateDataModel(Guid.NewGuid().ToString(), null, ComponentType.None, Guid.NewGuid().ToString(), 10, false);
+		Assert.That(() => component.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void ManufacturerIdIsNullOrEmptyTest()
+	{
+		var component = CreateDataModel(Guid.NewGuid().ToString(), "name", ComponentType.Processor, null, 10, false);
+		Assert.That(() => component.Validate(), Throws.TypeOf<ValidationException>());
+		component = CreateDataModel(Guid.NewGuid().ToString(), "name", ComponentType.Processor, string.Empty, 10, false);
+		Assert.That(() => component.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void ManufacturerIdIsNotGuidTest()
+	{
+		var component = CreateDataModel(Guid.NewGuid().ToString(), "name", ComponentType.Processor, "manufacturerId", 10, false);
+		Assert.That(() => component.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void PriceIsLessOrZeroTest()
+	{
+		var component = CreateDataModel(Guid.NewGuid().ToString(), "name", ComponentType.Processor, Guid.NewGuid().ToString(), 0, false);
+		Assert.That(() => component.Validate(), Throws.TypeOf<ValidationException>());
+		component = CreateDataModel(Guid.NewGuid().ToString(), "name", ComponentType.Processor, Guid.NewGuid().ToString(), -10, false);
+		Assert.That(() => component.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void AllFieldsIsCorrectTest()
+	{
+		var componentId = Guid.NewGuid().ToString();
+		var componentName = "name";
+		var componentType = ComponentType.Processor;
+		var componentManufacturerId = Guid.NewGuid().ToString();
+		var componentPrice = 10;
+		var componentIsDelete = false;
+		var component = CreateDataModel(componentId, componentName, componentType, componentManufacturerId, componentPrice, componentIsDelete);
+		Assert.That(() => component.Validate(), Throws.Nothing);
+		Assert.Multiple(() =>
+		{
+			Assert.That(component.Id, Is.EqualTo(componentId));
+			Assert.That(component.ComponentName, Is.EqualTo(componentName));
+			Assert.That(component.ComponentType, Is.EqualTo(componentType));
+			Assert.That(component.ManufacturerId, Is.EqualTo(componentManufacturerId));
+			Assert.That(component.Price, Is.EqualTo(componentPrice));
+			Assert.That(component.IsDeleted, Is.EqualTo(componentIsDelete));
+		});
+	}
+
+	private static ComponentDataModel CreateDataModel(string? id, string? componentName, ComponentType componentType, string? manufacturerId, double price, bool isDeleted) =>
+		new(id, componentName, componentType, manufacturerId, price, isDeleted);
+}

NorthBridge/NorthBridgeTest/DataModelsTests/ComponentHistoryDataModelTests.cs

@@ -0,0 +1,52 @@
+using NorthBridgeContract.DataModels;
+using NorthBridgeContract.Exceptions;
+
+namespace NorthBridgeTest.DataModelsTests;
+
+[TestFixture]
+internal class ComponentHistoryDataModelTests
+{
+    [Test]
+    public void ComponentIdIsNullOrEmptyTest()
+    {
+        var product = CreateDataModel(null, 10);
+        Assert.That(() => product.Validate(), Throws.TypeOf<ValidationException>());
+        product = CreateDataModel(string.Empty, 10);
+        Assert.That(() => product.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void ComponentIdIsNotGuidTest()
+    {
+        var product = CreateDataModel("id", 10);
+        Assert.That(() => product.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void OldPriceIsLessOrZeroTest()
+    {
+        var product = CreateDataModel(Guid.NewGuid().ToString(), 0);
+        Assert.That(() => product.Validate(), Throws.TypeOf<ValidationException>());
+        product = CreateDataModel(Guid.NewGuid().ToString(), -10);
+        Assert.That(() => product.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void AllFieldsIsCorrectTest()
+    {
+        var componentId = Guid.NewGuid().ToString();
+        var oldPrice = 10;
+        var productHistory = CreateDataModel(componentId, oldPrice);
+        Assert.That(() => productHistory.Validate(), Throws.Nothing);
+        Assert.Multiple(() =>
+        {
+            Assert.That(productHistory.ComponentId, Is.EqualTo(componentId));
+            Assert.That(productHistory.OldPrice, Is.EqualTo(oldPrice));
+            Assert.That(productHistory.ChangeDate, Is.LessThan(DateTime.UtcNow));
+            Assert.That(productHistory.ChangeDate, Is.GreaterThan(DateTime.UtcNow.AddMinutes(-1)));
+        });
+    }
+
+    private static ComponentHistoryDataModel CreateDataModel(string? componentId, double oldPrice) =>
+        new(componentId, oldPrice);
+}

NorthBridge/NorthBridgeTest/DataModelsTests/ComponentInProductDataModelTests.cs

@@ -0,0 +1,63 @@
+using NorthBridgeContract.DataModels;
+using NorthBridgeContract.Exceptions;
+using NUnit.Framework;
+using System;
+
+namespace NorthBridgeTest.DataModelsTests
+{
+    [TestFixture]
+    internal class ComponentInProductDataModelTests
+    {
+        [Test]
+        public void ComponentIdIsNullOrEmptyTest()
+        {
+            var componentInProduct = CreateDataModel(null, Guid.NewGuid().ToString());
+            Assert.That(() => componentInProduct.Validate(), Throws.TypeOf<ValidationException>());
+
+            componentInProduct = CreateDataModel(string.Empty, Guid.NewGuid().ToString());
+            Assert.That(() => componentInProduct.Validate(), Throws.TypeOf<ValidationException>());
+        }
+
+        [Test]
+        public void ComponentIdIsNotGuidTest()
+        {
+            var componentInProduct = CreateDataModel("invalid_id", Guid.NewGuid().ToString());
+            Assert.That(() => componentInProduct.Validate(), Throws.TypeOf<ValidationException>());
+        }
+
+        [Test]
+        public void ProductIdIsNullOrEmptyTest()
+        {
+            var componentInProduct = CreateDataModel(Guid.NewGuid().ToString(), null);
+            Assert.That(() => componentInProduct.Validate(), Throws.TypeOf<ValidationException>());
+
+            componentInProduct = CreateDataModel(Guid.NewGuid().ToString(), string.Empty);
+            Assert.That(() => componentInProduct.Validate(), Throws.TypeOf<ValidationException>());
+        }
+
+        [Test]
+        public void ProductIdIsNotGuidTest()
+        {
+            var componentInProduct = CreateDataModel(Guid.NewGuid().ToString(), "invalid_id");
+            Assert.That(() => componentInProduct.Validate(), Throws.TypeOf<ValidationException>());
+        }
+
+        [Test]
+        public void AllFieldsAreCorrectTest()
+        {
+            var componentId = Guid.NewGuid().ToString();
+            var productId = Guid.NewGuid().ToString();
+            var componentInProduct = CreateDataModel(componentId, productId);
+
+            Assert.That(() => componentInProduct.Validate(), Throws.Nothing);
+            Assert.Multiple(() =>
+            {
+                Assert.That(componentInProduct.ComponentId, Is.EqualTo(componentId));
+                Assert.That(componentInProduct.ProductId, Is.EqualTo(productId));
+            });
+        }
+
+        private static ComponentInProductDataModel CreateDataModel(string? componentId, string? productId) =>
+            new(componentId, productId);
+    }
+}

NorthBridge/NorthBridgeTest/DataModelsTests/ManufacturerDataModelTests.cs

@@ -0,0 +1,54 @@
+using NorthBridgeContract.DataModels;
+using NorthBridgeContract.Exceptions;
+
+namespace NorthBridgeTest.DataModelsTests;
+
+[TestFixture]
+internal class ManufacturerDataModelTests
+{
+	[Test]
+	public void IdIsNullEmptyTest()
+	{
+		var manufacturer = CreateDataModel(null, "name");
+		Assert.That(() => manufacturer.Validate(), Throws.TypeOf<ValidationException>());
+		manufacturer = CreateDataModel(string.Empty, "name");
+		Assert.That(() => manufacturer.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void IdIsNotGuidTest()
+	{
+		var manufacturer = CreateDataModel("id", "name");
+		Assert.That(() => manufacturer.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void ManufacturerNameIsNullOrEmptyTest()
+	{
+		var manufacturer = CreateDataModel(Guid.NewGuid().ToString(), null);
+		Assert.That(() => manufacturer.Validate(), Throws.TypeOf<ValidationException>());
+		manufacturer = CreateDataModel(Guid.NewGuid().ToString(), string.Empty);
+		Assert.That(() => manufacturer.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void AllFieldsIsCorrectTest()
+	{
+		var manufacturerId = Guid.NewGuid().ToString();
+		var manufacturerName = "name";
+		var prevManufacturerName = "prevManufacturerName";
+		var prevPrevManufacturerName = "prevPrevManufacturerName";
+		var manufacturer = CreateDataModel(manufacturerId, manufacturerName, prevManufacturerName, prevPrevManufacturerName);
+		Assert.That(() => manufacturer.Validate(), Throws.Nothing);
+		Assert.Multiple(() =>
+		{
+			Assert.That(manufacturer.Id, Is.EqualTo(manufacturerId));
+			Assert.That(manufacturer.ManufacturerName, Is.EqualTo(manufacturerName));
+			Assert.That(manufacturer.PrevManufacturerName, Is.EqualTo(prevManufacturerName));
+			Assert.That(manufacturer.PrevPrevManufacturerName, Is.EqualTo(prevPrevManufacturerName));
+		});
+	}
+
+	private static ManufacturerDataModel CreateDataModel(string? id, string? manufacturerName, string? prevManufacturerName = null, string? prevPrevManufacturerName = null) =>
+		new(id, manufacturerName, prevManufacturerName, prevPrevManufacturerName);
+}

NorthBridge/NorthBridgeTest/DataModelsTests/PostDataModelTests.cs

@@ -0,0 +1,93 @@
+using NorthBridgeContract.DataModels;
+using NorthBridgeContract.Enums;
+using NorthBridgeContract.Exceptions;
+
+namespace NorthBridgeTest.DataModelsTests;
+
+[TestFixture]
+internal class PostDataModelTests
+{
+	[Test]
+	public void IdIsNullOrEmptyTest()
+	{
+		var post = CreateDataModel(null, Guid.NewGuid().ToString(), "name", PostType.Assistant, 10, true, DateTime.UtcNow);
+		Assert.That(() => post.Validate(), Throws.TypeOf<ValidationException>());
+		post = CreateDataModel(string.Empty, Guid.NewGuid().ToString(), "name", PostType.Assistant, 10, true, DateTime.UtcNow);
+		Assert.That(() => post.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void IdIsNotGuidTest()
+	{
+		var post = CreateDataModel("id", Guid.NewGuid().ToString(), "name", PostType.Assistant, 10, true, DateTime.UtcNow);
+		Assert.That(() => post.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void PostIdIsNullEmptyTest()
+	{
+		var post = CreateDataModel(Guid.NewGuid().ToString(), null, "name", PostType.Assistant, 10, true, DateTime.UtcNow);
+		Assert.That(() => post.Validate(), Throws.TypeOf<ValidationException>());
+		post = CreateDataModel(Guid.NewGuid().ToString(), string.Empty, "name", PostType.Assistant, 10, true, DateTime.UtcNow);
+		Assert.That(() => post.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void PostIdIsNotGuidTest()
+	{
+		var post = CreateDataModel(Guid.NewGuid().ToString(), "postId", "name", PostType.Assistant, 10, true, DateTime.UtcNow);
+		Assert.That(() => post.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void PostNameIsEmptyTest()
+	{
+		var manufacturer = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), null, PostType.Assistant, 10, true, DateTime.UtcNow);
+		Assert.That(() => manufacturer.Validate(), Throws.TypeOf<ValidationException>());
+		manufacturer = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), string.Empty, PostType.Assistant, 10, true, DateTime.UtcNow);
+		Assert.That(() => manufacturer.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void PostTypeIsNoneTest()
+	{
+		var post = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), "name", PostType.None, 10, true, DateTime.UtcNow);
+		Assert.That(() => post.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void SalaryIsLessOrZeroTest()
+	{
+		var post = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), "name", PostType.Assistant, 0, true, DateTime.UtcNow);
+		Assert.That(() => post.Validate(), Throws.TypeOf<ValidationException>());
+		post = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), "name", PostType.Assistant, -10, true, DateTime.UtcNow);
+		Assert.That(() => post.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void AllFieldsIsCorrectTest()
+	{
+		var postId = Guid.NewGuid().ToString();
+		var postPostId = Guid.NewGuid().ToString();
+		var postName = "name";
+		var postType = PostType.Assistant;
+		var salary = 10;
+		var isActual = false;
+		var changeDate = DateTime.UtcNow.AddDays(-1);
+		var post = CreateDataModel(postId, postPostId, postName, postType, salary, isActual, changeDate);
+		Assert.That(() => post.Validate(), Throws.Nothing);
+		Assert.Multiple(() =>
+		{
+			Assert.That(post.Id, Is.EqualTo(postId));
+			Assert.That(post.PostId, Is.EqualTo(postPostId));
+			Assert.That(post.PostName, Is.EqualTo(postName));
+			Assert.That(post.PostType, Is.EqualTo(postType));
+			Assert.That(post.Salary, Is.EqualTo(salary));
+			Assert.That(post.IsActual, Is.EqualTo(isActual));
+			Assert.That(post.ChangeDate, Is.EqualTo(changeDate));
+		});
+	}
+
+	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);
+}

NorthBridge/NorthBridgeTest/DataModelsTests/ProductDataModelTests.cs

@@ -0,0 +1,75 @@
+using NorthBridgeContract.DataModels;
+using NorthBridgeContract.Enums;
+using NorthBridgeContract.Exceptions;
+
+namespace NorthBridgeTest.DataModelsTests
+{
+    [TestFixture]
+    internal class ProductDataModelTests
+    {
+        [Test]
+        public void IdIsNullOrEmptyTest()
+        {
+            var product = CreateDataModel(null, "Processor", Guid.NewGuid().ToString(), false, new List<ComponentDataModel> { new ComponentDataModel(Guid.NewGuid().ToString(), "CPU", ComponentType.Processor, Guid.NewGuid().ToString(), 200, false) });
+            Assert.That(() => product.Validate(), Throws.TypeOf<ValidationException>());
+            product = CreateDataModel(string.Empty, "Processor", Guid.NewGuid().ToString(), false, new List<ComponentDataModel> { new ComponentDataModel(Guid.NewGuid().ToString(), "CPU", ComponentType.Processor, Guid.NewGuid().ToString(), 200, false) });
+            Assert.That(() => product.Validate(), Throws.TypeOf<ValidationException>());
+        }
+
+        [Test]
+        public void IdIsNotGuidTest()
+        {
+            var product = CreateDataModel("id", "Processor", Guid.NewGuid().ToString(), false, new List<ComponentDataModel> { new ComponentDataModel(Guid.NewGuid().ToString(), "CPU", ComponentType.Processor, Guid.NewGuid().ToString(), 200, false) });
+            Assert.That(() => product.Validate(), Throws.TypeOf<ValidationException>());
+        }
+
+        [Test]
+        public void ProductNameIsNullOrEmptyTest()
+        {
+            var product = CreateDataModel(Guid.NewGuid().ToString(), null, Guid.NewGuid().ToString(), false, new List<ComponentDataModel> { new ComponentDataModel(Guid.NewGuid().ToString(), "CPU", ComponentType.Processor, Guid.NewGuid().ToString(), 200, false) });
+            Assert.That(() => product.Validate(), Throws.TypeOf<ValidationException>());
+            product = CreateDataModel(Guid.NewGuid().ToString(), string.Empty, Guid.NewGuid().ToString(), false, new List<ComponentDataModel> { new ComponentDataModel(Guid.NewGuid().ToString(), "CPU", ComponentType.Processor, Guid.NewGuid().ToString(), 200, false) });
+            Assert.That(() => product.Validate(), Throws.TypeOf<ValidationException>());
+        }
+
+        [Test]
+        public void WorkerIdIsNullOrEmptyTest()
+        {
+            var product = CreateDataModel(Guid.NewGuid().ToString(), "Processor", null, false, new List<ComponentDataModel> { new ComponentDataModel(Guid.NewGuid().ToString(), "CPU", ComponentType.Processor, Guid.NewGuid().ToString(), 200, false) });
+            Assert.That(() => product.Validate(), Throws.TypeOf<ValidationException>());
+            product = CreateDataModel(Guid.NewGuid().ToString(), "Processor", string.Empty, false, new List<ComponentDataModel> { new ComponentDataModel(Guid.NewGuid().ToString(), "CPU", ComponentType.Processor, Guid.NewGuid().ToString(), 200, false) });
+            Assert.That(() => product.Validate(), Throws.TypeOf<ValidationException>());
+        }
+
+        [Test]
+        public void WorkerIdIsNotGuidTest()
+        {
+            var product = CreateDataModel(Guid.NewGuid().ToString(), "Processor", "workerId", false, new List<ComponentDataModel> { new ComponentDataModel(Guid.NewGuid().ToString(), "CPU", ComponentType.Processor, Guid.NewGuid().ToString(), 200, false) });
+            Assert.That(() => product.Validate(), Throws.TypeOf<ValidationException>());
+        }
+
+        [Test]
+        public void ComponentsAreNullOrEmptyTest()
+        {
+            var product = CreateDataModel(Guid.NewGuid().ToString(), "Processor", Guid.NewGuid().ToString(), false, null);
+            Assert.That(() => product.Validate(), Throws.TypeOf<ValidationException>());
+            product = CreateDataModel(Guid.NewGuid().ToString(), "Processor", Guid.NewGuid().ToString(), false, new List<ComponentDataModel>());
+            Assert.That(() => product.Validate(), Throws.TypeOf<ValidationException>());
+        }
+
+        [Test]
+        public void TotalPriceIsIncorrectTest()
+        {
+            var components = new List<ComponentDataModel>
+            {
+                new ComponentDataModel(Guid.NewGuid().ToString(), "CPU", ComponentType.Processor, Guid.NewGuid().ToString(), 200, false),
+                new ComponentDataModel(Guid.NewGuid().ToString(), "GPU", ComponentType.GraphicsCard, Guid.NewGuid().ToString(), 300, false)
+            };
+            var product = CreateDataModel(Guid.NewGuid().ToString(), "Processor", Guid.NewGuid().ToString(), false, components);
+            Assert.That(product.TotalPrice, Is.EqualTo(500));
+        }
+
+        private static ProductDataModel CreateDataModel(string? id, string? productName, string? workerId, bool isDeleted, List<ComponentDataModel>? components) =>
+            new(id, productName, workerId, isDeleted, components ?? new List<ComponentDataModel>());
+    }
+}

NorthBridge/NorthBridgeTest/DataModelsTests/ProductOnStorageDataModelTests.cs

@@ -0,0 +1,71 @@
+using NorthBridgeContract.DataModels;
+using NorthBridgeContract.Exceptions;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace NorthBridgeTest.DataModelsTests
+{
+    [TestFixture]
+    internal class ProductOnStorageDataModelTests
+    {
+        [Test]
+        public void StorageIdIsNullOrEmptyTest()
+        {
+            var productStorage = new ProductOnStorageDataModel(null, Guid.NewGuid().ToString(), 1);
+            Assert.That(() => productStorage.Validate(), Throws.TypeOf<ValidationException>());
+            productStorage = new ProductOnStorageDataModel(string.Empty, Guid.NewGuid().ToString(), 1);
+            Assert.That(() => productStorage.Validate(), Throws.TypeOf<ValidationException>());
+        }
+
+        [Test]
+        public void StorageIdIsNotGuidTest()
+        {
+            var productStorage = new ProductOnStorageDataModel("id", Guid.NewGuid().ToString(), 1);
+            Assert.That(() => productStorage.Validate(), Throws.TypeOf<ValidationException>());
+        }
+
+        [Test]
+        public void ProductIdIsNullOrEmptyTest()
+        {
+            var productStorage = new ProductOnStorageDataModel(Guid.NewGuid().ToString(), null, 1);
+            Assert.That(() => productStorage.Validate(), Throws.TypeOf<ValidationException>());
+            productStorage = new ProductOnStorageDataModel(Guid.NewGuid().ToString(), string.Empty, 1);
+            Assert.That(() => productStorage.Validate(), Throws.TypeOf<ValidationException>());
+        }
+
+        [Test]
+        public void ProductIdIsNotGuidTest()
+        {
+            var productStorage = new ProductOnStorageDataModel(Guid.NewGuid().ToString(), "id", 1);
+            Assert.That(() => productStorage.Validate(), Throws.TypeOf<ValidationException>());
+        }
+
+        [Test]
+        public void CountIsLessThanOrEqualToZeroTest()
+        {
+            var productStorage = new ProductOnStorageDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 0);
+            Assert.That(() => productStorage.Validate(), Throws.TypeOf<ValidationException>());
+            productStorage = new ProductOnStorageDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), -1);
+            Assert.That(() => productStorage.Validate(), Throws.TypeOf<ValidationException>());
+        }
+
+        [Test]
+        public void AllFieldsAreCorrectTest()
+        {
+            var storageId = Guid.NewGuid().ToString();
+            var productId = Guid.NewGuid().ToString();
+            var count = 5;
+            var productStorage = new ProductOnStorageDataModel(storageId, productId, count);
+            Assert.That(() => productStorage.Validate(), Throws.Nothing);
+            Assert.Multiple(() =>
+            {
+                Assert.That(productStorage.StorageId, Is.EqualTo(storageId));
+                Assert.That(productStorage.ProductId, Is.EqualTo(productId));
+                Assert.That(productStorage.Count, Is.EqualTo(count));
+            });
+        }
+    }
+}

NorthBridge/NorthBridgeTest/DataModelsTests/ProductsInSupplyDataModelTests.cs

@@ -0,0 +1,70 @@
+using NorthBridgeContract.DataModels;
+using NorthBridgeContract.Exceptions;
+
+namespace NorthBridgeTest.DataModelsTests
+{
+    [TestFixture]
+    internal class ProductsInSupplyDataModelTests
+    {
+        [Test]
+        public void SupplyIdIsNullOrEmptyTest()
+        {
+            var productSupply = CreateDataModel(null, Guid.NewGuid().ToString(), 1);
+            Assert.That(() => productSupply.Validate(), Throws.TypeOf<ValidationException>());
+            productSupply = CreateDataModel(string.Empty, Guid.NewGuid().ToString(), 1);
+            Assert.That(() => productSupply.Validate(), Throws.TypeOf<ValidationException>());
+        }
+
+        [Test]
+        public void SupplyIdIsNotGuidTest()
+        {
+            var productSupply = CreateDataModel("id", Guid.NewGuid().ToString(), 1);
+            Assert.That(() => productSupply.Validate(), Throws.TypeOf<ValidationException>());
+        }
+
+        [Test]
+        public void ProductIdIsNullOrEmptyTest()
+        {
+            var productSupply = CreateDataModel(Guid.NewGuid().ToString(), null, 1);
+            Assert.That(() => productSupply.Validate(), Throws.TypeOf<ValidationException>());
+            productSupply = CreateDataModel(Guid.NewGuid().ToString(), string.Empty, 1);
+            Assert.That(() => productSupply.Validate(), Throws.TypeOf<ValidationException>());
+        }
+
+        [Test]
+        public void ProductIdIsNotGuidTest()
+        {
+            var productSupply = CreateDataModel(Guid.NewGuid().ToString(), "id", 1);
+            Assert.That(() => productSupply.Validate(), Throws.TypeOf<ValidationException>());
+        }
+
+        [Test]
+        public void CountIsLessThanOrEqualToZeroTest()
+        {
+            var productSupply = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 0);
+            Assert.That(() => productSupply.Validate(), Throws.TypeOf<ValidationException>());
+            productSupply = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), -1);
+            Assert.That(() => productSupply.Validate(), Throws.TypeOf<ValidationException>());
+        }
+
+        [Test]
+        public void AllFieldsAreCorrectTest()
+        {
+            var supplyId = Guid.NewGuid().ToString();
+            var productId = Guid.NewGuid().ToString();
+            var count = 5;
+            var productSupply = CreateDataModel(supplyId, productId, count);
+            Assert.That(() => productSupply.Validate(), Throws.Nothing);
+            Assert.Multiple(() =>
+            {
+                Assert.That(productSupply.SupplyId, Is.EqualTo(supplyId));
+                Assert.That(productSupply.ProductId, Is.EqualTo(productId));
+                Assert.That(productSupply.Count, Is.EqualTo(count));
+            });
+        }
+
+        private static ProductsInSupplyDataModel CreateDataModel(string? supplyId, string? productId, int count) =>
+            new(supplyId, productId, count);
+    }
+
+}

NorthBridge/NorthBridgeTest/DataModelsTests/SalaryDataModelTests.cs

@@ -0,0 +1,52 @@
+using NorthBridgeContract.DataModels;
+using NorthBridgeContract.Exceptions;
+
+namespace NorthBridgeTest.DataModelsTests;
+
+[TestFixture]
+internal class SalaryDataModelTests
+{
+	[Test]
+	public void WorkerIdIsEmptyTest()
+	{
+		var salary = CreateDataModel(null, DateTime.Now, 10);
+		Assert.That(() => salary.Validate(), Throws.TypeOf<ValidationException>());
+		salary = CreateDataModel(string.Empty, DateTime.Now, 10);
+		Assert.That(() => salary.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void WorkerIdIsNotGuidTest()
+	{
+		var salary = CreateDataModel("workerId", DateTime.Now, 10);
+		Assert.That(() => salary.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void PriceIsLessOrZeroTest()
+	{
+		var salary = CreateDataModel(Guid.NewGuid().ToString(), DateTime.Now, 0);
+		Assert.That(() => salary.Validate(), Throws.TypeOf<ValidationException>());
+		salary = CreateDataModel(Guid.NewGuid().ToString(), DateTime.Now, -10);
+		Assert.That(() => salary.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void AllFieldsIsCorrectTest()
+	{
+		var workerId = Guid.NewGuid().ToString();
+		var salaryDate = DateTime.Now.AddDays(-3).AddMinutes(-5);
+		var workerSalary = 10;
+		var salary = CreateDataModel(workerId, salaryDate, workerSalary);
+		Assert.That(() => salary.Validate(), Throws.Nothing);
+		Assert.Multiple(() =>
+		{
+			Assert.That(salary.WorkerId, Is.EqualTo(workerId));
+			Assert.That(salary.SalaryDate, Is.EqualTo(salaryDate));
+			Assert.That(salary.Salary, Is.EqualTo(workerSalary));
+		});
+	}
+
+	private static SalaryDataModel CreateDataModel(string? workerId, DateTime salaryDate, double workerSalary) =>
+		new(workerId, salaryDate, workerSalary);
+}

NorthBridge/NorthBridgeTest/DataModelsTests/SaleDataModelTests.cs

@@ -0,0 +1,93 @@
+using NorthBridgeContract.DataModels;
+using NorthBridgeContract.Enums;
+using NorthBridgeContract.Exceptions;
+
+namespace NorthBridgeTest.DataModelsTests;
+
+[TestFixture]
+internal class SaleDataModelTests
+{
+	[Test]
+	public void IdIsNullOrEmptyTest()
+	{
+		var sale = CreateDataModel(null, Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 10, false, CreateSubDataModel());
+		Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());
+		sale = CreateDataModel(string.Empty, Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 10, false, CreateSubDataModel());
+		Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void IdIsNotGuidTest()
+	{
+		var sale = CreateDataModel("id", Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 10, false, CreateSubDataModel());
+		Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());
+	}
+	[Test]
+	public void WorkerIdIsNullOrEmptyTest()
+	{
+		var sale = CreateDataModel(Guid.NewGuid().ToString(), null, Guid.NewGuid().ToString(), 10, false, CreateSubDataModel());
+		Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());
+		sale = CreateDataModel(Guid.NewGuid().ToString(), string.Empty, Guid.NewGuid().ToString(), 10, false, CreateSubDataModel());
+		Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void WorkerIdIsNotGuidTest()
+	{
+		var sale = CreateDataModel(Guid.NewGuid().ToString(), "workerId", Guid.NewGuid().ToString(), 10, false, CreateSubDataModel());
+		Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void BuyerIdIsNotGuidTest()
+	{
+		var sale = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), "buyerId", 10, false, CreateSubDataModel());
+		Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void SumIsLessOrZeroTest()
+	{
+		var sale = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 0, false, CreateSubDataModel());
+		Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());
+		sale = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), -10, false, CreateSubDataModel());
+		Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void ProductsIsNullOrEmptyTest()
+	{
+		var sale = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 10, false, null);
+		Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());
+		sale = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 10, false, []);
+		Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void AllFieldsIsCorrectTest()
+	{
+		var saleId = Guid.NewGuid().ToString();
+		var workerId = Guid.NewGuid().ToString();
+		var buyerId = Guid.NewGuid().ToString();
+		var sum = 10;
+		var isCancel = true;
+		var products = CreateSubDataModel();
+		var sale = CreateDataModel(saleId, workerId, buyerId, sum, isCancel, products);
+		Assert.That(() => sale.Validate(), Throws.Nothing);
+		Assert.Multiple(() =>
+		{
+			Assert.That(sale.Id, Is.EqualTo(saleId));
+			Assert.That(sale.WorkerId, Is.EqualTo(workerId));
+			Assert.That(sale.BuyerId, Is.EqualTo(buyerId));
+			Assert.That(sale.Sum, Is.EqualTo(sum));
+			Assert.That(sale.IsCancel, Is.EqualTo(isCancel));
+			Assert.That(sale.Products, Is.EquivalentTo(products));
+		});
+	}
+
+	private static SaleDataModel CreateDataModel(string? id, string? workerId, string? buyerId, double sum, bool isCancel, List<SaleProductDataModel>? products) =>
+		new(id, workerId, buyerId, sum, isCancel, products);
+
+	private static List<SaleProductDataModel> CreateSubDataModel()
+		=> [new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 1)];
+}

NorthBridge/NorthBridgeTest/DataModelsTests/SaleProductDataModelTests.cs

@@ -0,0 +1,68 @@
+using NorthBridgeContract.DataModels;
+using NorthBridgeContract.Exceptions;
+
+namespace NorthBridgeTest.DataModelsTests;
+
+[TestFixture]
+internal class SaleProductDataModelTests
+{
+	[Test]
+	public void SaleIdIsNullOrEmptyTest()
+	{
+		var saleProduct = CreateDataModel(null, Guid.NewGuid().ToString(), 10);
+		Assert.That(() => saleProduct.Validate(), Throws.TypeOf<ValidationException>());
+		saleProduct = CreateDataModel(string.Empty, Guid.NewGuid().ToString(), 10);
+		Assert.That(() => saleProduct.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void SaleIdIsNotGuidTest()
+	{
+		var saleProduct = CreateDataModel("saleId", Guid.NewGuid().ToString(), 10);
+		Assert.That(() => saleProduct.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void ProductIdIsNullOrEmptyTest()
+	{
+		var saleProduct = CreateDataModel(Guid.NewGuid().ToString(), null, 10);
+		Assert.That(() => saleProduct.Validate(), Throws.TypeOf<ValidationException>());
+		saleProduct = CreateDataModel(string.Empty, Guid.NewGuid().ToString(), 10);
+		Assert.That(() => saleProduct.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void ProductIdIsNotGuidTest()
+	{
+		var saleProduct = CreateDataModel(Guid.NewGuid().ToString(), "productId", 10);
+		Assert.That(() => saleProduct.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void CountIsLessOrZeroTest()
+	{
+		var saleProduct = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 0);
+		Assert.That(() => saleProduct.Validate(), Throws.TypeOf<ValidationException>());
+		saleProduct = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), -10);
+		Assert.That(() => saleProduct.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void AllFieldsIsCorrectTest()
+	{
+		var saleId = Guid.NewGuid().ToString();
+		var productId = Guid.NewGuid().ToString();
+		var count = 10;
+		var saleProduct = CreateDataModel(saleId, productId, count);
+		Assert.That(() => saleProduct.Validate(), Throws.Nothing);
+		Assert.Multiple(() =>
+		{
+			Assert.That(saleProduct.SaleId, Is.EqualTo(saleId));
+			Assert.That(saleProduct.ProductId, Is.EqualTo(productId));
+			Assert.That(saleProduct.Count, Is.EqualTo(count));
+		});
+	}
+
+	private static SaleProductDataModel CreateDataModel(string? saleId, string? productId, int count) =>
+		new(saleId, productId, count);
+}

NorthBridge/NorthBridgeTest/DataModelsTests/StorageDateModelTests.cs

@@ -0,0 +1,51 @@
+using NorthBridgeContract.DataModels;
+using NorthBridgeContract.Exceptions;
+
+namespace NorthBridgeTest.DataModelsTests
+{
+    [TestFixture]
+    internal class StorageDataModelTests
+    {
+        [Test]
+        public void IdIsNullOrEmptyTest()
+        {
+            var storage = CreateDataModel(null, "ул. Ленина, д. 10");
+            Assert.That(() => storage.Validate(), Throws.TypeOf<ValidationException>());
+            storage = CreateDataModel(string.Empty, "ул. Ленина, д. 10");
+            Assert.That(() => storage.Validate(), Throws.TypeOf<ValidationException>());
+        }
+
+        [Test]
+        public void IdIsNotGuidTest()
+        {
+            var storage = CreateDataModel("id", "ул. Ленина, д. 10");
+            Assert.That(() => storage.Validate(), Throws.TypeOf<ValidationException>());
+        }
+
+        [Test]
+        public void AddressIsNullOrEmptyTest()
+        {
+            var storage = CreateDataModel(Guid.NewGuid().ToString(), null);
+            Assert.That(() => storage.Validate(), Throws.TypeOf<ValidationException>());
+            storage = CreateDataModel(Guid.NewGuid().ToString(), string.Empty);
+            Assert.That(() => storage.Validate(), Throws.TypeOf<ValidationException>());
+        }
+
+        [Test]
+        public void AllFieldsAreCorrectTest()
+        {
+            var storageId = Guid.NewGuid().ToString();
+            var address = "ул. Ленина, д. 10";
+            var storage = CreateDataModel(storageId, address);
+            Assert.That(() => storage.Validate(), Throws.Nothing);
+            Assert.Multiple(() =>
+            {
+                Assert.That(storage.Id, Is.EqualTo(storageId));
+                Assert.That(storage.Address, Is.EqualTo(address));
+            });
+        }
+
+        private static StorageDataModel CreateDataModel(string? id, string? address) =>
+            new(id, address);
+    }
+}

NorthBridge/NorthBridgeTest/DataModelsTests/SupplyDataModelTests.cs

@@ -0,0 +1,60 @@
+using NorthBridgeContract.DataModels;
+using NorthBridgeContract.Exceptions;
+
+namespace NorthBridgeTest.DataModelsTests
+{
+    [TestFixture]
+    internal class SupplyDataModelTests
+    {
+        [Test]
+        public void IdIsNullOrEmptyTest()
+        {
+            var supply = CreateDataModel(null, Guid.NewGuid().ToString(), DateTime.Now);
+            Assert.That(() => supply.Validate(), Throws.TypeOf<ValidationException>());
+            supply = CreateDataModel(string.Empty, Guid.NewGuid().ToString(), DateTime.Now);
+            Assert.That(() => supply.Validate(), Throws.TypeOf<ValidationException>());
+        }
+
+        [Test]
+        public void IdIsNotGuidTest()
+        {
+            var supply = CreateDataModel("id", Guid.NewGuid().ToString(), DateTime.Now);
+            Assert.That(() => supply.Validate(), Throws.TypeOf<ValidationException>());
+        }
+
+        [Test]
+        public void StorageIdIsNullOrEmptyTest()
+        {
+            var supply = CreateDataModel(Guid.NewGuid().ToString(), null, DateTime.Now);
+            Assert.That(() => supply.Validate(), Throws.TypeOf<ValidationException>());
+            supply = CreateDataModel(Guid.NewGuid().ToString(), string.Empty, DateTime.Now);
+            Assert.That(() => supply.Validate(), Throws.TypeOf<ValidationException>());
+        }
+
+        [Test]
+        public void StorageIdIsNotGuidTest()
+        {
+            var supply = CreateDataModel(Guid.NewGuid().ToString(), "id", DateTime.Now);
+            Assert.That(() => supply.Validate(), Throws.TypeOf<ValidationException>());
+        }
+
+        [Test]
+        public void AllFieldsAreCorrectTest()
+        {
+            var supplyId = Guid.NewGuid().ToString();
+            var storageId = Guid.NewGuid().ToString();
+            var date = DateTime.Now;
+            var supply = CreateDataModel(supplyId, storageId, date);
+            Assert.That(() => supply.Validate(), Throws.Nothing);
+            Assert.Multiple(() =>
+            {
+                Assert.That(supply.Id, Is.EqualTo(supplyId));
+                Assert.That(supply.StorageId, Is.EqualTo(storageId));
+                Assert.That(supply.Date, Is.EqualTo(date));
+            });
+        }
+
+        private static SupplyDataModel CreateDataModel(string? id, string? storageId, DateTime date) =>
+            new(id, storageId, date);
+    }
+}

NorthBridge/NorthBridgeTest/DataModelsTests/WorkerDataModelTests.cs

@@ -0,0 +1,90 @@
+using NorthBridgeContract.DataModels;
+using NorthBridgeContract.Exceptions;
+
+namespace NorthBridgeTest.DataModelsTests;
+
+[TestFixture]
+internal class WorkerDataModelTests
+{
+	[Test]
+	public void IdIsNullOrEmptyTest()
+	{
+		var worker = CreateDataModel(null, "fio", Guid.NewGuid().ToString(), DateTime.Now.AddYears(-18), DateTime.Now, false);
+		Assert.That(() => worker.Validate(), Throws.TypeOf<ValidationException>());
+		worker = CreateDataModel(string.Empty, "fio", Guid.NewGuid().ToString(), DateTime.Now.AddYears(-18), DateTime.Now, false);
+		Assert.That(() => worker.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void IdIsNotGuidTest()
+	{
+		var worker = CreateDataModel("id", "fio", Guid.NewGuid().ToString(), DateTime.Now.AddYears(-18), DateTime.Now, false);
+		Assert.That(() => worker.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void FIOIsNullOrEmptyTest()
+	{
+		var worker = CreateDataModel(Guid.NewGuid().ToString(), null, Guid.NewGuid().ToString(), DateTime.Now.AddYears(-18), DateTime.Now, false);
+		Assert.That(() => worker.Validate(), Throws.TypeOf<ValidationException>());
+		worker = CreateDataModel(Guid.NewGuid().ToString(), string.Empty, Guid.NewGuid().ToString(), DateTime.Now.AddYears(-18), DateTime.Now, false);
+		Assert.That(() => worker.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void PostIdIsNullOrEmptyTest()
+	{
+		var worker = CreateDataModel(Guid.NewGuid().ToString(), "fio", null, DateTime.Now.AddYears(-18), DateTime.Now, false);
+		Assert.That(() => worker.Validate(), Throws.TypeOf<ValidationException>());
+		worker = CreateDataModel(Guid.NewGuid().ToString(), "fio", string.Empty, DateTime.Now.AddYears(-18), DateTime.Now, false);
+		Assert.That(() => worker.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void PostIdIsNotGuidTest()
+	{
+		var worker = CreateDataModel(Guid.NewGuid().ToString(), "fio", "postId", DateTime.Now.AddYears(-18), DateTime.Now, false);
+		Assert.That(() => worker.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void BirthDateIsNotCorrectTest()
+	{
+		var worker = CreateDataModel(Guid.NewGuid().ToString(), "fio", Guid.NewGuid().ToString(), DateTime.Now.AddYears(-16).AddDays(1), DateTime.Now, false);
+		Assert.That(() => worker.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void BirthDateAndEmploymentDateIsNotCorrectTest()
+	{
+		var worker = CreateDataModel(Guid.NewGuid().ToString(), "fio", Guid.NewGuid().ToString(), DateTime.Now.AddYears(-18), DateTime.Now.AddYears(-18).AddDays(-1), false);
+		Assert.That(() => worker.Validate(), Throws.TypeOf<ValidationException>());
+		worker = CreateDataModel(Guid.NewGuid().ToString(), "fio", Guid.NewGuid().ToString(), DateTime.Now.AddYears(-18), DateTime.Now.AddYears(-16), false);
+		Assert.That(() => worker.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void AllFieldsIsCorrectTest()
+	{
+		var workerId = Guid.NewGuid().ToString();
+		var fio = "fio";
+		var postId = Guid.NewGuid().ToString();
+		var birthDate = DateTime.Now.AddYears(-16).AddDays(-1);
+		var employmentDate = DateTime.Now;
+		var isDelete = false;
+		var worker = CreateDataModel(workerId, fio, postId, birthDate, employmentDate, isDelete);
+		Assert.That(() => worker.Validate(), Throws.Nothing);
+		Assert.Multiple(() =>
+		{
+			Assert.That(worker.Id, Is.EqualTo(workerId));
+			Assert.That(worker.FIO, Is.EqualTo(fio));
+			Assert.That(worker.PostId, Is.EqualTo(postId));
+			Assert.That(worker.BirthDate, Is.EqualTo(birthDate));
+			Assert.That(worker.EmploymentDate, Is.EqualTo(employmentDate));
+			Assert.That(worker.IsDeleted, Is.EqualTo(isDelete));
+		});
+	}
+
+	private static WorkerDataModel CreateDataModel(string? id, string? fio, string? postId, DateTime birthDate, DateTime employmentDate, bool isDeleted) =>
+		new(id, fio, postId, birthDate, employmentDate, isDeleted);
+}

NorthBridge/NorthBridgeTest/NorthBridgeTest.csproj

@@ -0,0 +1,28 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+
+    <IsPackable>false</IsPackable>
+    <IsTestProject>true</IsTestProject>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="coverlet.collector" Version="6.0.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
+    <PackageReference Include="NUnit" Version="3.14.0" />
+    <PackageReference Include="NUnit.Analyzers" Version="3.9.0" />
+    <PackageReference Include="NUnit3TestAdapter" Version="4.5.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\NorthBridgeContract\NorthBridgeContract.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Using Include="NUnit.Framework" />
+  </ItemGroup>
+
+</Project>