иииууууу

WildPlum/WildPlum.sln

@@ -1,10 +1,12 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio Version 17
-VisualStudioVersion = 17.12.35707.178 d17.12
+VisualStudioVersion = 17.12.35707.178
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "WildPlum", "WildPlum\WildPlum.csproj", "{07BA0D97-C05C-4E48-9661-A5F7FD5EAC46}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "WildPlumTests", "WildPlumTests\WildPlumTests.csproj", "{1ABD4AED-38DE-4511-ACCF-6B2DCBC4DE86}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -15,6 +17,10 @@ Global
 		{07BA0D97-C05C-4E48-9661-A5F7FD5EAC46}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{07BA0D97-C05C-4E48-9661-A5F7FD5EAC46}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{07BA0D97-C05C-4E48-9661-A5F7FD5EAC46}.Release|Any CPU.Build.0 = Release|Any CPU
+		{1ABD4AED-38DE-4511-ACCF-6B2DCBC4DE86}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{1ABD4AED-38DE-4511-ACCF-6B2DCBC4DE86}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{1ABD4AED-38DE-4511-ACCF-6B2DCBC4DE86}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{1ABD4AED-38DE-4511-ACCF-6B2DCBC4DE86}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

WildPlum/WildPlum/DataModels/BuyerDataModel.cs

@@ -0,0 +1,39 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Numerics;
+using System.Text;
+using System.Text.RegularExpressions;
+using System.Threading.Tasks;
+using System.Xml;
+using WildPlum.Extensions;
+using WildPlum.Infrastructure;
+using static System.Runtime.InteropServices.JavaScript.JSType;
+
+namespace WildPlum.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");
+    }
+}

WildPlum/WildPlum/DataModels/JobTitleDataModel.cs

@@ -0,0 +1,40 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Xml;
+using WildPlum.Enums;
+using WildPlum.Extensions;
+using WildPlum.Infrastructure;
+
+namespace WildPlum.DataModels;
+
+public class JobTitleDataModel(string id, string postId, string postName, JobTitleType jobTitleType, 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 JobTitleType JobTitleType { get; private set; } = jobTitleType;
+    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 (JobTitleType == JobTitleType.None)
+            throw new ValidationException("Field PostType is empty");
+        if (Salary <= 0)
+            throw new ValidationException("Field Salary is empty");
+    }
+}

WildPlum/WildPlum/DataModels/OrderDataModel.cs

@@ -0,0 +1,41 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using WildPlum.Extensions;
+using WildPlum.Infrastructure;
+
+namespace WildPlum.DataModels;
+
+public class OrderDataModel (string id, string buyerId, string workerId, int price, DateTime dateStart, DateTime dateEnd, List<OrderProductDataModel> products) : IValidation
+{
+    public string Id { get; private set; } = id;
+    public string BuyerId { get; private set; } = buyerId;
+    public string WorkerId { get; private set; } = workerId;
+    public int Price { get; private set; } = price;
+    public DateTime DateStart { get; private set; } = dateStart;
+    public DateTime DateEnd { get; private set; } = dateEnd;
+    public List<OrderProductDataModel> 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 (BuyerId.IsEmpty())
+            throw new ValidationException("Field BuyerId is empty");
+        if (!BuyerId.IsGuid())
+            throw new ValidationException("The value in the field BuyerId 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 (DateEnd < DateStart)
+            throw new ValidationException("The end date of the order cannot be less than the start date");
+        if ((Products?.Count ?? 0) == 0)
+            throw new ValidationException("The sale must include products");
+    }
+}

WildPlum/WildPlum/DataModels/OrderProductDataModel.cs

@@ -0,0 +1,31 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using WildPlum.Extensions;
+using WildPlum.Infrastructure;
+
+namespace WildPlum.DataModels;
+
+public class OrderProductDataModel (string orderId, string productId, int count) : IValidation
+{
+    public string OrderId { get; private set; } = orderId;
+    public string ProductId { get; private set; } = productId;
+    public int Count { get; private set; } = count;
+
+    public void Validate()
+    {
+        if (OrderId.IsEmpty())
+            throw new ValidationException("Field OrderId is empty");
+        if (!OrderId.IsGuid())
+            throw new ValidationException("The value in the field OrderId 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 Id is not a unique identifier");
+        if (Count <= 0)
+            throw new ValidationException("Field Count is less than or equal to 0");
+    }
+}

WildPlum/WildPlum/DataModels/ProductDataModel.cs

@@ -0,0 +1,34 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Xml;
+using WildPlum.Enums;
+using WildPlum.Extensions;
+using WildPlum.Infrastructure;
+
+namespace WildPlum.DataModels;
+
+public class ProductDataModel (string id, string productName, ProductType productType, double price, bool isDeleted) : IValidation
+{
+    public string Id { get; private set; } = id;
+    public string ProductName { get; private set; } = productName;
+    public ProductType ProductType { get; private set; } = productType;
+    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 (ProductName.IsEmpty())
+            throw new ValidationException("Field ProductName is empty");
+        if (ProductType == ProductType.None)
+            throw new ValidationException("Field ProductType is empty");
+        if (Price <= 0)
+            throw new ValidationException("Field Price is less than or equal to 0");
+    }
+}

WildPlum/WildPlum/DataModels/ProductHistoryDataModel.cs

@@ -0,0 +1,26 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using WildPlum.Extensions;
+using WildPlum.Infrastructure;
+
+namespace WildPlum.DataModels;
+
+public class ProductHistoryDataModel(string productId, double oldPrice) : IValidation
+{
+    public string ProductId { get; private set; } = productId;
+    public double OldPrice { get; private set; } = oldPrice;
+    public DateTime ChangeDate { get; private set; } = DateTime.UtcNow;
+    public void Validate()
+    {
+        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 (OldPrice <= 0)
+            throw new ValidationException("Field OldPrice is less than or equal to 0");
+    }
+}

WildPlum/WildPlum/DataModels/SalaryDataModel.cs

@@ -0,0 +1,26 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using WildPlum.Extensions;
+using WildPlum.Infrastructure;
+
+namespace WildPlum.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");
+    }
+}

WildPlum/WildPlum/DataModels/SupplyDataModel.cs

@@ -0,0 +1,32 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using WildPlum.Extensions;
+using WildPlum.Infrastructure;
+
+namespace WildPlum.DataModels;
+
+public class SupplyDataModel(string id, string warehouseId, DateTime date, List<SupplyProductDataModel> products) : IValidation
+{
+    public string Id { get; private set; } = id;
+    public string WarehouseId { get; private set; } = warehouseId;
+    public DateTime Date { get; private set; } = date;
+    public List<SupplyProductDataModel> 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 (WarehouseId.IsEmpty())
+            throw new ValidationException("Field WarehouseId is empty");
+        if (!WarehouseId.IsGuid())
+            throw new ValidationException("The value in the field WarehouseId is not a unique identifier");
+        if ((Products?.Count ?? 0) == 0)
+            throw new ValidationException("The sale must include products");
+    }
+}

WildPlum/WildPlum/DataModels/SupplyProductDataModel.cs

@@ -0,0 +1,30 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using WildPlum.Extensions;
+using WildPlum.Infrastructure;
+
+namespace WildPlum.DataModels;
+
+public class SupplyProductDataModel(string supplyId, string productId, int count) : IValidation
+{
+    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 Id is empty");
+        if (!SupplyId.IsGuid())
+            throw new ValidationException("The value in the field Id 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");
+    }
+}

WildPlum/WildPlum/DataModels/WarehouseDataModel.cs

@@ -0,0 +1,30 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Net.Sockets;
+using System.Text;
+using System.Threading.Tasks;
+using WildPlum.Extensions;
+using WildPlum.Infrastructure;
+
+namespace WildPlum.DataModels;
+
+public class WarehouseDataModel(string id, string name, string address) : IValidation
+{
+    public string Id { get; private set; } = id;
+    public string Name { get; private set; } = name;
+    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 (Name.IsEmpty())
+            throw new ValidationException("Field Name is empty");
+        if (Address.IsEmpty())
+            throw new ValidationException("Field Adress is empty");
+    }
+}

WildPlum/WildPlum/DataModels/WorkerDataModel.cs

@@ -0,0 +1,42 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Xml;
+using WildPlum.Extensions;
+using WildPlum.Infrastructure;
+using static System.Runtime.InteropServices.JavaScript.JSType;
+
+namespace WildPlum.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()})");
+    }
+}

WildPlum/WildPlum/Enums/JobTitleType.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace WildPlum.Enums;
+
+public enum JobTitleType
+{
+    None = 0,
+    Operator = 1,
+    Delivaryman = 2,
+    Loader = 3
+}

WildPlum/WildPlum/Enums/ProductType.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace WildPlum.Enums;
+
+public enum ProductType
+{
+    None = 0,
+    Cloth = 1,
+    Shoes = 2,
+    Toy = 3,
+    Office = 4
+}

WildPlum/WildPlum/Exceptions/ValidationException.cs

@@ -0,0 +1,11 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace WildPlum.Exceptions;
+
+public class ValidationException(string message) : Exception(message)
+{
+}

WildPlum/WildPlum/Extensions/StringExtensions.cs

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

WildPlum/WildPlum/Infrastructure/IValidation.cs

@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace WildPlum.Infrastructure;
+
+public interface IValidation
+{
+    void Validate();
+}

WildPlum/WildPlumTests/DataModelsTests/BuyerDataModelTests.cs

@@ -0,0 +1,72 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using WildPlum.DataModels;
+
+namespace WildPlumTests.DataModelsTests;
+
+[TestFixture]
+public class BuyerDataModelTests
+{
+    [Test]
+    public void IdIsNullOrEmptyTest()
+    {
+        var buyer = CreateDataModel(null, "fio", "number");
+        Assert.That(() => buyer.Validate(), Throws.TypeOf<ValidationException>());
+        buyer = CreateDataModel(string.Empty, "fio", "number");
+        Assert.That(() => buyer.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void IdIsNotGuidTest()
+    {
+        var buyer = CreateDataModel("id", "fio", "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(), "fio", null);
+        Assert.That(() => buyer.Validate(), Throws.TypeOf<ValidationException>());
+        buyer = CreateDataModel(Guid.NewGuid().ToString(), "fio", string.Empty);
+        Assert.That(() => buyer.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void PhoneNumberIsIncorrectTest()
+    {
+        var buyer = CreateDataModel(Guid.NewGuid().ToString(), "fio", "777");
+        Assert.That(() => buyer.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void AllFieldsIsCorrectTest()
+    {
+        var buyerId = Guid.NewGuid().ToString();
+        var fio = "Fio";
+        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);
+
+}

WildPlum/WildPlumTests/DataModelsTests/JobTitleDataModelTests.cs

@@ -0,0 +1,97 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using WildPlum.DataModels;
+using WildPlum.Enums;
+
+namespace WildPlumTests.DataModelsTests;
+
+[TestFixture]
+public class JobTitleDateModelTests
+{
+    [Test]
+    public void IdIsNullOrEmptyTest()
+    {
+        var post = CreateDataModel(null, Guid.NewGuid().ToString(), "name", JobTitleType.Delivaryman, 10, true, DateTime.UtcNow);
+        Assert.That(() => post.Validate(), Throws.TypeOf<ValidationException>());
+        post = CreateDataModel(string.Empty, Guid.NewGuid().ToString(), "name", JobTitleType.Delivaryman, 10, true, DateTime.UtcNow);
+        Assert.That(() => post.Validate(), Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void IdIsNotGuidTest()
+    {
+        var post = CreateDataModel("id", Guid.NewGuid().ToString(), "name", JobTitleType.Delivaryman, 10, true, DateTime.UtcNow);
+        Assert.That(() => post.Validate(), Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void PostIdIsNullEmptyTest()
+    {
+        var post = CreateDataModel(Guid.NewGuid().ToString(), null, "name", JobTitleType.Delivaryman, 10, true, DateTime.UtcNow);
+        Assert.That(() => post.Validate(), Throws.TypeOf<ValidationException>());
+        post = CreateDataModel(Guid.NewGuid().ToString(), string.Empty, "name", JobTitleType.Delivaryman, 10, true, DateTime.UtcNow);
+        Assert.That(() => post.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void PostIdIsNotGuidTest()
+    {
+        var post = CreateDataModel(Guid.NewGuid().ToString(), "postId", "name", JobTitleType.Delivaryman, 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, JobTitleType.Delivaryman, 10, true, DateTime.UtcNow);
+        Assert.That(() => manufacturer.Validate(), Throws.TypeOf<ValidationException>());
+        manufacturer = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), string.Empty, JobTitleType.Delivaryman, 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", JobTitleType.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", JobTitleType.Delivaryman, 0, true, DateTime.UtcNow);
+        Assert.That(() => post.Validate(), Throws.TypeOf<ValidationException>());
+        post = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), "name", JobTitleType.Delivaryman, -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 = JobTitleType.Delivaryman;
+        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.JobTitleType, 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 JobTitleDataModel CreateDataModel(string? id, string? postId, string? postName, JobTitleType jobTitleType, double salary, bool isActual, DateTime
+        changeDate) => new(id, postId, postName, jobTitleType, salary, isActual, changeDate);
+
+}

WildPlum/WildPlumTests/DataModelsTests/OrderDataModelTests.cs

@@ -0,0 +1,107 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using WildPlum.DataModels;
+using WildPlum.Enums;
+
+namespace WildPlumTests.DataModelsTests;
+
+[TestFixture]
+public class OrderDataModelTests
+{
+    [Test]
+    public void IdIsNullOrEmptyTest()
+    {
+        var order = CreateDataModel(null, Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 100, DateTime.UtcNow, DateTime.UtcNow.AddDays(1), CreateSubDataModel());
+        Assert.That(() => order.Validate(), Throws.TypeOf<ValidationException>());
+        order = CreateDataModel(string.Empty, Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 100, DateTime.UtcNow, DateTime.UtcNow.AddDays(1), CreateSubDataModel());
+        Assert.That(() => order.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void IdIsNotGuidTest()
+    {
+        var post = CreateDataModel("1", Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 100, DateTime.UtcNow, DateTime.UtcNow.AddDays(1), CreateSubDataModel());
+        Assert.That(() => post.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void BuyerIdIsNullOrEmptyTest()
+    {
+        var order = CreateDataModel(Guid.NewGuid().ToString(), null, Guid.NewGuid().ToString(), 100, DateTime.UtcNow, DateTime.UtcNow.AddDays(1), CreateSubDataModel());
+        Assert.That(() => order.Validate(), Throws.TypeOf<ValidationException>());
+        order = CreateDataModel(Guid.NewGuid().ToString(), string.Empty, Guid.NewGuid().ToString(), 100, DateTime.UtcNow, DateTime.UtcNow.AddDays(1), CreateSubDataModel());
+        Assert.That(() => order.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void BuyerIdIsNotGuidTest()
+    {
+        var post = CreateDataModel(Guid.NewGuid().ToString(), "1", Guid.NewGuid().ToString(), 100, DateTime.UtcNow, DateTime.UtcNow.AddDays(1), CreateSubDataModel());
+        Assert.That(() => post.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void WorkerIdIsNullOrEmptyTest()
+    {
+        var order = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), null, 100, DateTime.UtcNow, DateTime.UtcNow.AddDays(1), CreateSubDataModel());
+        Assert.That(() => order.Validate(), Throws.TypeOf<ValidationException>());
+        order = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), string.Empty, 100, DateTime.UtcNow, DateTime.UtcNow.AddDays(1), CreateSubDataModel());
+        Assert.That(() => order.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void WorkerIdIsNotGuidTest()
+    {
+        var post = CreateDataModel(Guid.NewGuid().ToString(),Guid.NewGuid().ToString(),  "1", 100, DateTime.UtcNow, DateTime.UtcNow.AddDays(1), CreateSubDataModel());
+        Assert.That(() => post.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void StartDateAndEndDateIsNotCorrect()
+    {
+        var order = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 100, DateTime.UtcNow.AddDays(2), DateTime.UtcNow, CreateSubDataModel());
+        Assert.That(() => order.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void ProductsIsNullOrEmptyTest()
+    {
+        var order = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 100, DateTime.UtcNow, DateTime.UtcNow.AddDays(2), null);
+        Assert.That(() => order.Validate(), Throws.TypeOf<ValidationException>());
+        order = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 100, DateTime.UtcNow, DateTime.UtcNow.AddDays(2), []);
+        Assert.That(() => order.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void AllFieldsIsCorrectTest()
+    {
+        var id = Guid.NewGuid().ToString();
+        var buyerId = Guid.NewGuid().ToString();
+        var workerId = Guid.NewGuid().ToString();
+        var price = 10;
+        var dateStart = DateTime.UtcNow;
+        var dateEnd = DateTime.UtcNow.AddDays(2);
+        var products = CreateSubDataModel();
+        var order = CreateDataModel(id, buyerId, workerId, price, dateStart, dateEnd, products);
+        Assert.That(() => order.Validate(), Throws.Nothing);
+        Assert.Multiple(() =>
+        {
+            Assert.That(order.Id, Is.EqualTo(id));
+            Assert.That(order.BuyerId, Is.EqualTo(buyerId));
+            Assert.That(order.WorkerId, Is.EqualTo(workerId));
+            Assert.That(order.Price, Is.EqualTo(price));
+            Assert.That(order.DateStart, Is.EqualTo(dateStart));
+            Assert.That(order.DateEnd, Is.EqualTo(dateEnd));
+            Assert.That(order.Products, Is.EqualTo(products));
+        });
+    }
+
+    private static OrderDataModel CreateDataModel(string? id, string? buyerId, string? workerId, int price, 
+        DateTime dateStart, DateTime dateEnd, List<OrderProductDataModel> products) => new(id, buyerId, workerId, price, dateStart, dateEnd, products);
+
+    private static List<OrderProductDataModel> CreateSubDataModel() => [new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 1)];
+}

WildPlum/WildPlumTests/DataModelsTests/OrderProductDataModelTests.cs

@@ -0,0 +1,71 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using WildPlum.DataModels;
+
+namespace WildPlumTests.DataModelsTests;
+
+[TestFixture]
+internal class OrderProductDataModelTests
+{
+    [Test]
+    public void OrderIdIsNullOrEmptyTest()
+    {
+        var order = CreateDataModel(Guid.NewGuid().ToString(), null, 1);
+        Assert.That(() => order.Validate(), Throws.TypeOf<ValidationException>());
+        order = CreateDataModel( Guid.NewGuid().ToString(), string.Empty, 1);
+        Assert.That(() => order.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void OrderIdIsNotGuidTest()
+    {
+        var order = CreateDataModel(Guid.NewGuid().ToString(), "id", 1);
+        Assert.That(() => order.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void ProductIdIsNullOrEmptyTest()
+    {
+        var product = CreateDataModel(null, Guid.NewGuid().ToString(), 1);
+        Assert.That(() => product.Validate(), Throws.TypeOf<ValidationException>());
+        product = CreateDataModel(string.Empty, Guid.NewGuid().ToString(), 1);
+        Assert.That(() => product.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void ProductIdIsNotGuidTest()
+    {
+        var product = CreateDataModel("id", Guid.NewGuid().ToString(), 1);
+        Assert.That(() => product.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void CountNotCorrectTest()
+    {
+        var order = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), -10);
+        Assert.That(() => order.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void AllFieldsIsCorrectTest()
+    {
+        var orderId = Guid.NewGuid().ToString();
+        var productId = Guid.NewGuid().ToString();
+        var count = 10;
+        var orderProduct = CreateDataModel(orderId, productId, count);
+        Assert.That(() => orderProduct.Validate(), Throws.Nothing);
+        Assert.Multiple(() =>
+        {
+            Assert.That(orderProduct.OrderId, Is.EqualTo(orderId));
+            Assert.That(orderProduct.ProductId, Is.EqualTo(productId));
+            Assert.That(orderProduct.Count, Is.EqualTo(count));
+        });
+    }
+
+    private static OrderProductDataModel CreateDataModel(string? orderId, string? productId, int count) =>
+        new(orderId, productId, count);
+}

WildPlum/WildPlumTests/DataModelsTests/ProductDataModelTests.cs

@@ -0,0 +1,78 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using WildPlum.DataModels;
+using WildPlum.Enums;
+
+namespace WildPlumTests.DataModelsTests;
+
+[TestFixture]
+internal class ProductDataModelTests
+{
+    [Test]
+    public void IdIsNullOrEmptyTest()
+    {
+        var product = CreateDataModel(null, "name", ProductType.Cloth, 10, false);
+        Assert.That(() => product.Validate(), Throws.TypeOf<ValidationException>());
+        product = CreateDataModel(string.Empty, "name", ProductType.Cloth, 10, false);
+        Assert.That(() => product.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void IdIsNotGuidTest()
+    {
+        var product = CreateDataModel("id", "name", ProductType.Cloth, 10, false);
+        Assert.That(() => product.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void ProductNameIsEmptyTest()
+    {
+        var product = CreateDataModel(Guid.NewGuid().ToString(), null, ProductType.Cloth, 10, false);
+        Assert.That(() => product.Validate(), Throws.TypeOf<ValidationException>());
+        product = CreateDataModel(Guid.NewGuid().ToString(), string.Empty, ProductType.Cloth, 10, false);
+        Assert.That(() => product.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void ProductTypeIsNoneTest()
+    {
+        var product = CreateDataModel(Guid.NewGuid().ToString(), null, ProductType.None, 10, false);
+        Assert.That(() => product.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void PriceIsLessOrZeroTest()
+    {
+        var product = CreateDataModel(Guid.NewGuid().ToString(), "name",  ProductType.Cloth, 0, false);
+        Assert.That(() => product.Validate(),
+        Throws.TypeOf<ValidationException>());
+        product = CreateDataModel(Guid.NewGuid().ToString(), "name", ProductType.Cloth, -10, false);
+        Assert.That(() => product.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void AllFieldsIsCorrectTest()
+    {
+        var productId = Guid.NewGuid().ToString();
+        var productName = "name";
+        var productType = ProductType.Cloth;
+        var productPrice = 10;
+        var productIsDelete = false;
+        var product = CreateDataModel(productId, productName, productType, productPrice, productIsDelete);
+        Assert.That(() => product.Validate(), Throws.Nothing);
+        Assert.Multiple(() =>
+        {
+            Assert.That(product.Id, Is.EqualTo(productId));
+            Assert.That(product.ProductName, Is.EqualTo(productName));
+            Assert.That(product.ProductType, Is.EqualTo(productType));
+            Assert.That(product.Price, Is.EqualTo(productPrice));
+            Assert.That(product.IsDeleted, Is.EqualTo(productIsDelete));
+        });
+    }
+    private static ProductDataModel CreateDataModel(string? id, string? productName, ProductType productType,  
+        double price, bool isDeleted) => new(id, productName, productType, price, isDeleted);
+}

WildPlum/WildPlumTests/DataModelsTests/ProductHistoryDataModelTests.cs

@@ -0,0 +1,58 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using WildPlum.DataModels;
+
+namespace WildPlumTests.DataModelsTests;
+
+[TestFixture]
+public class ProductHistoryDataModelTests
+{
+    [Test]
+    public void ProductIdIsNullOrEmptyTest()
+    {
+        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 ProductIdIsNotGuidTest()
+    {
+        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 productId = Guid.NewGuid().ToString();
+        var oldPrice = 10;
+        var productHistory = CreateDataModel(productId, oldPrice);
+        Assert.That(() => productHistory.Validate(), Throws.Nothing);
+        Assert.Multiple(() =>
+        {
+            Assert.That(productHistory.ProductId, Is.EqualTo(productId));
+            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 ProductHistoryDataModel CreateDataModel(string? productId, double oldPrice) =>
+        new(productId, oldPrice);
+}

WildPlum/WildPlumTests/DataModelsTests/SalaryDataModelTests.cs

@@ -0,0 +1,57 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using WildPlum.DataModels;
+
+namespace WildPlumTests.DataModelsTests;
+
+[TestFixture]
+public 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);
+
+}

WildPlum/WildPlumTests/DataModelsTests/SupplyDataModelTests.cs

@@ -0,0 +1,78 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using WildPlum.DataModels;
+
+namespace WildPlumTests.DataModelsTests;
+
+[TestFixture]
+internal class SupplyDataModelTests
+{
+    [Test]
+    public void IdIsNullOrEmptyTest()
+    {
+        var supply = CreateDataModel(null, Guid.NewGuid().ToString(), DateTime.UtcNow, CreateSubDataModel());
+        Assert.That(() => supply.Validate(), Throws.TypeOf<ValidationException>());
+        supply = CreateDataModel(string.Empty, Guid.NewGuid().ToString(), DateTime.UtcNow, CreateSubDataModel());
+        Assert.That(() => supply.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void IdIsNotGuidTest()
+    {
+        var supply = CreateDataModel("id", Guid.NewGuid().ToString(), DateTime.UtcNow, CreateSubDataModel());
+        Assert.That(() => supply.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void WarehouseIdIsNullOrEmptyTest()
+    {
+        var supply = CreateDataModel(Guid.NewGuid().ToString(), null, DateTime.UtcNow, CreateSubDataModel());
+        Assert.That(() => supply.Validate(), Throws.TypeOf<ValidationException>());
+        supply = CreateDataModel(Guid.NewGuid().ToString(), string.Empty, DateTime.UtcNow, CreateSubDataModel());
+        Assert.That(() => supply.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void WarehouseIdIsNotGuidTest()
+    {
+        var supply = CreateDataModel(Guid.NewGuid().ToString(), "warehouseId", DateTime.UtcNow, CreateSubDataModel());
+        Assert.That(() => supply.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void ProductsIsNullOrEmptyTest()
+    {
+        var supply = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), DateTime.UtcNow, null);
+        Assert.That(() => supply.Validate(), Throws.TypeOf<ValidationException>());
+        supply = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), DateTime.UtcNow, []);
+        Assert.That(() => supply.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+
+    [Test]
+    public void AllFieldsIsCorrectTest()
+    {
+        var id = Guid.NewGuid().ToString();
+        var warehouseId = Guid.NewGuid().ToString();
+        var date = DateTime.UtcNow;
+        var products = CreateSubDataModel();
+        var supply = CreateDataModel(id, warehouseId, date, products);
+        Assert.That(() => supply.Validate(), Throws.Nothing);
+        Assert.Multiple(() =>
+        {
+            Assert.That(supply.Id, Is.EqualTo(id));
+            Assert.That(supply.WarehouseId, Is.EqualTo(warehouseId));
+            Assert.That(supply.Date, Is.EqualTo(date));
+            Assert.That(supply.Products, Is.EqualTo(products));
+        });
+    }
+
+    private static SupplyDataModel CreateDataModel(string? id, string? warehouseId, DateTime date, List<SupplyProductDataModel> products) =>
+        new (id, warehouseId, date, products);
+
+    private static List<SupplyProductDataModel> CreateSubDataModel() => [new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 1)];
+}

WildPlum/WildPlumTests/DataModelsTests/SupplyProductDataModelTests.cs

@@ -0,0 +1,71 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using WildPlum.DataModels;
+
+namespace WildPlumTests.DataModelsTests;
+
+[TestFixture]
+internal class SupplyProductDataModelTests
+{
+    [Test]
+    public void SupplyIdIsNullOrEmptyTest()
+    {
+        var supply = CreateDataModel(null, Guid.NewGuid().ToString(), 10);
+        Assert.That(() => supply.Validate(), Throws.TypeOf<ValidationException>());
+        supply = CreateDataModel(string.Empty, Guid.NewGuid().ToString(), 10);
+        Assert.That(() => supply.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void SupplyIdIsNotGuidTest()
+    {
+        var supply = CreateDataModel("supplyId", Guid.NewGuid().ToString(), 10);
+        Assert.That(() => supply.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void ProductIdIsNullOrEmptyTest()
+    {
+        var supply = CreateDataModel(Guid.NewGuid().ToString(), null, 10);
+        Assert.That(() => supply.Validate(), Throws.TypeOf<ValidationException>());
+        supply = CreateDataModel(Guid.NewGuid().ToString(), string.Empty, 10);
+        Assert.That(() => supply.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void ProductIdIsNotGuidTest()
+    {
+        var supply = CreateDataModel(Guid.NewGuid().ToString(), "productId", 10);
+        Assert.That(() => supply.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void CountNotCorrectTest()
+    {
+        var supply = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), -10);
+        Assert.That(() => supply.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void AllFieldsIsCorrectTest()
+    {
+        var supplyId = Guid.NewGuid().ToString();
+        var productId = Guid.NewGuid().ToString();
+        var count = 10;
+        var supplyProduct = CreateDataModel(supplyId, productId, count);
+        Assert.That(() => supplyProduct.Validate(), Throws.Nothing);
+        Assert.Multiple(() =>
+        {
+            Assert.That(supplyProduct.SupplyId, Is.EqualTo(supplyId));
+            Assert.That(supplyProduct.ProductId, Is.EqualTo(productId));
+            Assert.That(supplyProduct.Count, Is.EqualTo(count));
+        });
+    }
+
+    private static SupplyProductDataModel CreateDataModel(string? id, string? productId, int count) =>
+        new(id, productId, count);
+}

WildPlum/WildPlumTests/DataModelsTests/WarehouseDataModelTests.cs

@@ -0,0 +1,51 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using WildPlum.DataModels;
+
+namespace WildPlumTests.DataModelsTests;
+
+
+[TestFixture]
+internal class WarehouseDataModelTests
+{
+    [Test]
+    public void IdIsNullOrEmptyTest()
+    {
+        var warehouse = CreateDataModel(null, "name", "address");
+        Assert.That(() => warehouse.Validate(), Throws.TypeOf<ValidationException>());
+        warehouse = CreateDataModel(string.Empty, "name", "address");
+        Assert.That(() => warehouse.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void IdIsNotGuidTest()
+    {
+        var warehouse = CreateDataModel("id", "name", "address");
+        Assert.That(() => warehouse.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void NameIsNullOrEmptyTest()
+    {
+        var warehouse = CreateDataModel(Guid.NewGuid().ToString(), null, "address");
+        Assert.That(() => warehouse.Validate(), Throws.TypeOf<ValidationException>());
+        warehouse = CreateDataModel(Guid.NewGuid().ToString(), string.Empty, "address");
+        Assert.That(() => warehouse.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void AddressIsNullOrEmptyTest()
+    {
+        var warehouse = CreateDataModel(Guid.NewGuid().ToString(), "name", null);
+        Assert.That(() => warehouse.Validate(), Throws.TypeOf<ValidationException>());
+        warehouse = CreateDataModel(Guid.NewGuid().ToString(), "name", string.Empty);
+        Assert.That(() => warehouse.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    private static WarehouseDataModel CreateDataModel(string? id, string? name, string? adress) =>
+        new(id, name, adress);
+}

WildPlum/WildPlumTests/DataModelsTests/WorkerDataModelTests.cs

@@ -0,0 +1,99 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using WildPlum.DataModels;
+
+namespace WildPlumTests.DataModelsTests;
+
+public 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);
+
+
+}

WildPlum/WildPlumTests/WildPlumTests.csproj

@@ -0,0 +1,27 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net9.0</TargetFramework>
+    <LangVersion>latest</LangVersion>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="coverlet.collector" Version="6.0.2" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
+    <PackageReference Include="NUnit" Version="4.2.2" />
+    <PackageReference Include="NUnit.Analyzers" Version="4.4.0" />
+    <PackageReference Include="NUnit3TestAdapter" Version="4.6.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\WildPlum\WildPlum.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Using Include="NUnit.Framework" />
+  </ItemGroup>
+
+</Project>