Тесты и правки

SquirrelBarContracts/SquirrelBarContracts/Class1.cs

@@ -1,7 +0,0 @@
-namespace SquirrelBarContracts
-{
-    public class Class1
-    {
-
-    }
-}

SquirrelBarContracts/SquirrelBarContracts/DataModels/BuyerDataModel.cs

@@ -0,0 +1,36 @@
+using SquirrelBarContracts.Extensions;
+using SquirrelBarContracts.Infrastructure;
+using System.ComponentModel.DataAnnotations;
+using System.Numerics;
+using System.Text.RegularExpressions;
+using static System.Runtime.InteropServices.JavaScript.JSType;
+
+namespace SquirrelBarContracts.DataModels;
+
+public class BuyerDataModel(string id, string fio,DateTime birthDate,string phoneNumber, int drinksBought, double discountSize) : IValidation
+{
+
+    public string Id { get; private set; } = id;
+    public string FIO { get; private set; } = fio;
+    public DateTime BirthDate { get; private set; } = birthDate;
+    public string PhoneNumber { get; private set; } = phoneNumber;
+    public int DrinksBought { get; private set; } = drinksBought;
+    public double DiscountSize { get; private set; } = discountSize;
+
+    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 (!Regex.IsMatch(FIO, @"^([А-ЯЁ][а-яё]*(-[А-ЯЁ][а-яё]*)?)\s([А-ЯЁ]\.?\s?([А-ЯЁ]\.?\s?)?)?$"))
+            throw new ValidationException("Field FIO is not a fio");
+        if (BirthDate.Date > DateTime.Now.AddYears(-18).Date)
+            throw new ValidationException($"Minors cannot be hired (BirthDate = {BirthDate.ToShortDateString()})");
+        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");
+
+    }
+}

SquirrelBarContracts/SquirrelBarContracts/DataModels/ClientDiscountDataModel.cs

@@ -0,0 +1,28 @@
+using SquirrelBarContracts.Extensions;
+using SquirrelBarContracts.Infrastructure;
+using System.ComponentModel.DataAnnotations;
+
+namespace SquirrelBarContracts.DataModels;
+
+public class ClientDiscountDataModel(string? buyerId, double totalSum, double personalDiscount) : IValidation
+{
+    public string? BuyerId { get; private set; } = buyerId;
+    public double TotalSum { get; private set; } = totalSum;
+    public double PersonalDiscount { get; private set; } = personalDiscount;
+
+    public void Validate()
+    {
+        if (BuyerId.IsEmpty())
+            throw new ValidationException("Field Id is empty");
+        if (!BuyerId.IsGuid())
+            throw new ValidationException("The value in the field Id 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 (TotalSum < 0)
+            throw new ValidationException("Field Sum is less than 0");
+        if (PersonalDiscount < 0)
+            throw new ValidationException("Field PersonalDiscount is less than 0");
+
+    }
+}
+

SquirrelBarContracts/SquirrelBarContracts/DataModels/PostDataModel.cs

@@ -0,0 +1,33 @@
+using SquirrelBarContracts.Enums;
+using SquirrelBarContracts.Extensions;
+using SquirrelBarContracts.Infrastructure;
+using System.ComponentModel.DataAnnotations;
+
+namespace SquirrelBarContracts.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");
+    }
+}

SquirrelBarContracts/SquirrelBarContracts/DataModels/ProductDataModel.cs

@@ -0,0 +1,34 @@
+using SquirrelBarContracts.Enums;
+using SquirrelBarContracts.Extensions;
+using SquirrelBarContracts.Infrastructure;
+using System.ComponentModel.DataAnnotations;
+using System.Xml;
+
+namespace SquirrelBarContracts.DataModels;
+
+public class ProductDataModel(string id, string productName, ProductType productType, string SupplierId, 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 string SupplierId { get; private set; } = SupplierId;
+    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 (SupplierId.IsEmpty())
+            throw new ValidationException("Field SupplierId is empty");
+        if (!SupplierId.IsGuid())
+            throw new ValidationException("The value in the field SupplierId is not a unique identifier");
+        if (Price <= 0)
+            throw new ValidationException("Field Price is less than or equal to 0");
+    }
+}

SquirrelBarContracts/SquirrelBarContracts/DataModels/ProductHistoryDataModel.cs

@@ -0,0 +1,21 @@
+using SquirrelBarContracts.Extensions;
+using SquirrelBarContracts.Infrastructure;
+using System.ComponentModel.DataAnnotations;
+
+namespace SquirrelBarContracts.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");
+    }
+}

SquirrelBarContracts/SquirrelBarContracts/DataModels/SaleDataModel.cs

@@ -0,0 +1,38 @@
+using SquirrelBarContracts.Enums;
+using SquirrelBarContracts.Extensions;
+using SquirrelBarContracts.Infrastructure;
+using System.ComponentModel.DataAnnotations;
+using System.Xml;
+
+namespace SquirrelBarContracts.DataModels;
+
+public class SaleDataModel(string id, string workerId, string? buyerId, double sum, DiscountType discountType, double discount, 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 DiscountType DiscountType { get; private set; } = discountType;
+    public double Discount { get; private set; } = discount;
+    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");
+    }
+}

SquirrelBarContracts/SquirrelBarContracts/DataModels/SaleProductDataModel.cs

@@ -0,0 +1,26 @@
+using SquirrelBarContracts.Extensions;
+using SquirrelBarContracts.Infrastructure;
+using System.ComponentModel.DataAnnotations;
+
+namespace SquirrelBarContracts.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");
+    }
+}
+

SquirrelBarContracts/SquirrelBarContracts/DataModels/WorkerDataModel.cs

@@ -0,0 +1,40 @@
+using SquirrelBarContracts.Extensions;
+using SquirrelBarContracts.Infrastructure;
+using static System.Runtime.InteropServices.JavaScript.JSType;
+using System.Xml;
+using System.ComponentModel.DataAnnotations;
+using System.Text.RegularExpressions;
+
+namespace SquirrelBarContracts.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 (!Regex.IsMatch(FIO, @"^([А-ЯЁ][а-яё]*(-[А-ЯЁ][а-яё]*)?)\s([А-ЯЁ]\.?\s?([А-ЯЁ]\.?\s?)?)?$"))
+            throw new ValidationException("Field FIO is not a fio");
+        if (PostId.IsEmpty())
+            throw new ValidationException("Field PostId is empty");
+        if (!PostId.IsGuid())
+            throw new ValidationException("The value in the field PostId is not a unique identifier");
+        if (BirthDate.Date > DateTime.Now.AddYears(-16).Date)
+            throw new ValidationException($"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()})");
+    }
+}
+

SquirrelBarContracts/SquirrelBarContracts/Enums/DiscountType.cs

@@ -0,0 +1,11 @@
+namespace SquirrelBarContracts.Enums;
+
+[Flags]
+public enum DiscountType
+{
+    None = 0,
+    OnSale = 1,
+    RegularCustomer = 2,
+    Certificate = 4
+
+}

SquirrelBarContracts/SquirrelBarContracts/Enums/PostType.cs

@@ -0,0 +1,9 @@
+namespace SquirrelBarContracts.Enums;
+
+public enum PostType
+{
+    None = 0,
+    Barman = 1,
+    Administrator = 2,
+    Waiter = 3
+}

SquirrelBarContracts/SquirrelBarContracts/Enums/ProductType.cs

@@ -0,0 +1,9 @@
+namespace SquirrelBarContracts.Enums;
+
+public enum ProductType
+{
+    None = 0,
+    Food = 1,
+    AlcoholDrinks = 2,
+    NonAlcoholDrinks = 3,
+}

SquirrelBarContracts/SquirrelBarContracts/Exceptions/ValidationException.cs

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

SquirrelBarContracts/SquirrelBarContracts/Extensions/StringExtensions.cs

@@ -0,0 +1,13 @@
+namespace SquirrelBarContracts.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 _);
+    }
+}

SquirrelBarContracts/SquirrelBarContracts/Infrastructure/IValidation.cs

@@ -0,0 +1,6 @@
+namespace SquirrelBarContracts.Infrastructure;
+
+public interface IValidation
+{
+    void Validate();
+}

SquirrelBarContracts/SquirrelBarProject.sln

@@ -5,6 +5,8 @@ VisualStudioVersion = 17.12.35707.178 d17.12
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SquirrelBarContracts", "SquirrelBarContracts\SquirrelBarContracts.csproj", "{1836A936-AA20-4D13-9855-6E3364AE958E}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SquirrelBarTests", "SquirrelBarTests\SquirrelBarTests.csproj", "{DC10787F-93C9-4033-A50A-9113E080CDAA}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -15,6 +17,10 @@ Global
 		{1836A936-AA20-4D13-9855-6E3364AE958E}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{1836A936-AA20-4D13-9855-6E3364AE958E}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{1836A936-AA20-4D13-9855-6E3364AE958E}.Release|Any CPU.Build.0 = Release|Any CPU
+		{DC10787F-93C9-4033-A50A-9113E080CDAA}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{DC10787F-93C9-4033-A50A-9113E080CDAA}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{DC10787F-93C9-4033-A50A-9113E080CDAA}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{DC10787F-93C9-4033-A50A-9113E080CDAA}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

SquirrelBarContracts/SquirrelBarTests/DataModelsTests/BuyerDataModelTests.cs

@@ -0,0 +1,92 @@
+using SquirrelBarContracts.DataModels;
+using System.ComponentModel.DataAnnotations;
+
+namespace SquirrelBarTests.DataModelsTests;
+[TestFixture]
+internal class BuyerDataModelTests
+{
+    [Test]
+    public void IdIsNullOrEmptyTest()
+    {
+        var model = CreateDataModel(null, "Иванов И.И.", DateTime.Now.AddYears(-20), "number", 10, 15);
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
+
+        model = CreateDataModel(string.Empty, "Иванов И.И.", DateTime.Now.AddYears(-20), "number", 10, 15);
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void IdIsNotGuidTest()
+    {
+        var model = CreateDataModel("not a guid", "Иванов И.И.", DateTime.Now.AddYears(-20), "number", 10, 15);
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void FioIsNullOrEmptyTest()
+    {
+        var model = CreateDataModel(Guid.NewGuid().ToString(), null, DateTime.Now.AddYears(-20), "number", 10, 15);
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
+
+        model = CreateDataModel(Guid.NewGuid().ToString(), string.Empty,DateTime.Now.AddYears(-20), "number", 10, 15);
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void FioIsNotCorrectTest()
+    {
+        var model = CreateDataModel(Guid.NewGuid().ToString(), "Иванов", DateTime.Now.AddYears(-20), "number", 10, 15);
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void PhoneNumberIsNullOrEmptyTest()
+    {
+        var buyer = CreateDataModel(Guid.NewGuid().ToString(), "fio", DateTime.Now.AddYears(-20), null, 10, 15);
+        Assert.That(() => buyer.Validate(),
+        Throws.TypeOf<ValidationException>());
+        buyer = CreateDataModel(Guid.NewGuid().ToString(), "fio", DateTime.Now.AddYears(-20), string.Empty, 10, 15);
+        Assert.That(() => buyer.Validate(),
+        Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void PhoneNumberIsIncorrectTest()
+    {
+        var buyer = CreateDataModel(Guid.NewGuid().ToString(), "fio", DateTime.Now.AddYears(-20), "7777", 10, 15);
+        Assert.That(() => buyer.Validate(),
+        Throws.TypeOf<ValidationException>());
+    }
+
+
+    [Test]
+    public void BirthDateIsFutureTest()
+    {
+        var model = CreateDataModel(Guid.NewGuid().ToString(), "fio", DateTime.Now.AddYears(-14).AddDays(1),"number", 10, 15);
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void AllFieldsIsCorrectTest()
+    {
+        var id = Guid.NewGuid().ToString();
+        var fio = "Иванов И.И.";
+        var birthDate = DateTime.Now.AddYears(-20);
+        var phoneNumber = "+7-777-777-77-77";
+        var drinksBought = 2;
+        var discountSize = 11;
+        var model = CreateDataModel(id, fio, birthDate, phoneNumber, drinksBought, discountSize);
+        Assert.That(() => model.Validate(), Throws.Nothing);
+        Assert.Multiple(() =>
+        {
+            Assert.That(model.Id, Is.EqualTo(id));
+            Assert.That(model.FIO, Is.EqualTo(fio));
+            Assert.That(model.BirthDate, Is.EqualTo(birthDate));
+            Assert.That(model.PhoneNumber, Is.EqualTo(phoneNumber));
+            Assert.That(model.DrinksBought, Is.EqualTo(drinksBought));
+            Assert.That(model.DiscountSize, Is.EqualTo(discountSize));
+        });
+    }
+
+    private static BuyerDataModel CreateDataModel(string? id, string? fio, DateTime birthDate, string? phoneNumber, int drinksBought, double discountSize)
+        => new(id, fio, birthDate, phoneNumber, drinksBought, discountSize);
+}

SquirrelBarContracts/SquirrelBarTests/DataModelsTests/ClientDiscountDataModelTests.cs

@@ -0,0 +1,60 @@
+using SquirrelBarContracts.DataModels;
+using System.ComponentModel.DataAnnotations;
+
+namespace SquirrelBarTests.DataModelsTests;
+
+[TestFixture]
+internal class ClientDiscountDataModelTests
+{
+    [Test]
+    public void BuyerIdIsNullOrEmptyTest()
+    {
+        var product = CreateDataModel(null, 100,10);
+        Assert.That(() => product.Validate(),
+        Throws.TypeOf<ValidationException>());
+        product = CreateDataModel(string.Empty, 100,10);
+        Assert.That(() => product.Validate(),
+        Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void ProductIdIsNotGuidTest()
+    {
+        var product = CreateDataModel("id", 100,10);
+        Assert.That(() => product.Validate(),
+        Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void personalDiscountIsLessThenZeroTest()
+    {
+        var product = CreateDataModel(Guid.NewGuid().ToString(), -100, 10);
+        Assert.That(() => product.Validate(),
+        Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void TotalSumIsLessThenZeroTest()
+    {
+        var product = CreateDataModel(Guid.NewGuid().ToString(), -100, 10);
+        Assert.That(() => product.Validate(),
+        Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void AllFieldsIsCorrectTest()
+    {
+        var buyerId = Guid.NewGuid().ToString();
+        var totalSum = 100;
+        var personalDiscount = 10;
+        var clientDiscount = CreateDataModel(buyerId, totalSum, personalDiscount);
+        Assert.That(() => clientDiscount.Validate(), Throws.Nothing);
+        Assert.Multiple(() =>
+        {
+            Assert.That(clientDiscount.BuyerId, Is.EqualTo(buyerId));
+            Assert.That(clientDiscount.TotalSum, Is.EqualTo(totalSum));
+            Assert.That(clientDiscount.PersonalDiscount, Is.EqualTo(personalDiscount));
+          
+        });
+    }
+    private static ClientDiscountDataModel CreateDataModel(string? buyerId, double totalSum, double personalDiscount) =>
+    new(buyerId, totalSum, personalDiscount);
+}

SquirrelBarContracts/SquirrelBarTests/DataModelsTests/PostDataModelTests.cs

@@ -0,0 +1,111 @@
+using SquirrelBarContracts.DataModels;
+using SquirrelBarContracts.Enums;
+using System.ComponentModel.DataAnnotations;
+
+namespace SquirrelBarTests.DataModelsTests;
+
+[TestFixture]
+internal class PostDataModelTests
+{
+    [Test]
+    public void IdIsNullOrEmptyTest()
+    {
+        var post = CreateDataModel(null, Guid.NewGuid().ToString(), "name",
+        PostType.Barman, 10, true, DateTime.UtcNow);
+        Assert.That(() => post.Validate(),
+        Throws.TypeOf<ValidationException>());
+        post = CreateDataModel(string.Empty, Guid.NewGuid().ToString(),
+        "name", PostType.Barman, 10, true, DateTime.UtcNow);
+        Assert.That(() => post.Validate(),
+        Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void IdIsNotGuidTest()
+    {
+        var post = CreateDataModel("id", Guid.NewGuid().ToString(), "name",
+        PostType.Barman, 10, true, DateTime.UtcNow);
+        Assert.That(() => post.Validate(),
+        Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void PostIdIsNullEmptyTest()
+    {
+        var post = CreateDataModel(Guid.NewGuid().ToString(), null, "name",
+        PostType.Barman, 10, true, DateTime.UtcNow);
+        Assert.That(() => post.Validate(),
+        Throws.TypeOf<ValidationException>());
+        post = CreateDataModel(Guid.NewGuid().ToString(), string.Empty,
+        "name", PostType.Barman, 10, true, DateTime.UtcNow);
+        Assert.That(() => post.Validate(),
+        Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void PostIdIsNotGuidTest()
+    {
+        var post = CreateDataModel(Guid.NewGuid().ToString(), "postId",
+        "name", PostType.Barman, 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.Barman, 10, true, DateTime.UtcNow);
+        Assert.That(() => manufacturer.Validate(),
+        Throws.TypeOf<ValidationException>());
+        manufacturer = CreateDataModel(Guid.NewGuid().ToString(),
+        Guid.NewGuid().ToString(), string.Empty, PostType.Barman, 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.Barman, 0, true, DateTime.UtcNow);
+        Assert.That(() => post.Validate(),
+        Throws.TypeOf<ValidationException>());
+        post = CreateDataModel(Guid.NewGuid().ToString(),
+        Guid.NewGuid().ToString(), "name", PostType.Barman, -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.Barman;
+        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);
+}

SquirrelBarContracts/SquirrelBarTests/DataModelsTests/ProductDataModelTests.cs

@@ -0,0 +1,104 @@
+using SquirrelBarContracts.DataModels;
+using System.ComponentModel.DataAnnotations;
+using SquirrelBarContracts.Enums;
+namespace SquirrelBarTests.DataModelsTests;
+
+[TestFixture]
+internal class ProductDataModelTests
+{
+    [Test]
+    public void IdIsNullOrEmptyTest()
+    {
+        var product = CreateDataModel(null, "name", ProductType.AlcoholDrinks, Guid.NewGuid().ToString(), 10, false);
+        Assert.That(() => product.Validate(),
+        Throws.TypeOf<ValidationException>());
+        product = CreateDataModel(string.Empty, "name", ProductType.AlcoholDrinks, Guid.NewGuid().ToString(), 10, false);
+        Assert.That(() => product.Validate(),
+        Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void IdIsNotGuidTest()
+    {
+        var product = CreateDataModel("id", "name", ProductType.AlcoholDrinks, Guid.NewGuid().ToString(), 10, false);
+        Assert.That(() => product.Validate(),
+        Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void ProductNameIsEmptyTest()
+    {
+        var product = CreateDataModel(Guid.NewGuid().ToString(), null,
+        ProductType.AlcoholDrinks, Guid.NewGuid().ToString(), 10, false);
+        Assert.That(() => product.Validate(),
+        Throws.TypeOf<ValidationException>());
+        product = CreateDataModel(Guid.NewGuid().ToString(), string.Empty,
+        ProductType.AlcoholDrinks, Guid.NewGuid().ToString(), 10, false);
+        Assert.That(() => product.Validate(),
+        Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void ProductTypeIsNoneTest()
+    {
+        var product = CreateDataModel(Guid.NewGuid().ToString(), null,
+        ProductType.None, Guid.NewGuid().ToString(), 10, false);
+        Assert.That(() => product.Validate(),
+        Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void ManufacturerIdIsNullOrEmptyTest()
+    {
+    var product = CreateDataModel(Guid.NewGuid().ToString(), "name",
+    ProductType.AlcoholDrinks, null, 10, false);
+        Assert.That(() => product.Validate(),
+        Throws.TypeOf<ValidationException>());
+        product = CreateDataModel(Guid.NewGuid().ToString(), "name",
+        ProductType.AlcoholDrinks, string.Empty, 10, false);
+        Assert.That(() => product.Validate(),
+        Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void ManufacturerIdIsNotGuidTest()
+    {
+        var product = CreateDataModel(Guid.NewGuid().ToString(), "name",
+        ProductType.AlcoholDrinks, "supplierId", 10, false);
+        Assert.That(() => product.Validate(),
+        Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void PriceIsLessOrZeroTest()
+    {
+        var product = CreateDataModel(Guid.NewGuid().ToString(), "name",
+        ProductType.AlcoholDrinks, Guid.NewGuid().ToString(), 0, false);
+        Assert.That(() => product.Validate(),
+        Throws.TypeOf<ValidationException>());
+        product = CreateDataModel(Guid.NewGuid().ToString(), "name",
+        ProductType.AlcoholDrinks, Guid.NewGuid().ToString(), -10, false);
+        Assert.That(() => product.Validate(),
+        Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void AllFieldsIsCorrectTest()
+    {
+        var productId = Guid.NewGuid().ToString();
+        var productName = "name";
+        var productType = ProductType.AlcoholDrinks;
+        var productSupplierId = Guid.NewGuid().ToString();
+        var productPrice = 10;
+        var productIsDelete = false;
+        var product = CreateDataModel(productId, productName, productType,
+        productSupplierId, 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.SupplierId, Is.EqualTo(productSupplierId));
+            Assert.That(product.Price, Is.EqualTo(productPrice));
+            Assert.That(product.IsDeleted, Is.EqualTo(productIsDelete));
+        });
+    }
+    private static ProductDataModel CreateDataModel(string? id, string?
+    productName, ProductType productType, string? supplierId, double price, bool
+    isDeleted) =>
+    new(id, productName, productType, supplierId, price, isDeleted);
+}

SquirrelBarContracts/SquirrelBarTests/DataModelsTests/ProductHistoryDataModel.cs

@@ -0,0 +1,56 @@
+using SquirrelBarContracts.DataModels;
+using System.ComponentModel.DataAnnotations;
+
+namespace SquirrelBarTests.DataModelsTests;
+
+[TestFixture]
+internal 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);
+}

SquirrelBarContracts/SquirrelBarTests/DataModelsTests/SaleDataModelTests.cs

@@ -0,0 +1,126 @@
+using SquirrelBarContracts.DataModels;
+using SquirrelBarContracts.Enums;
+using System.ComponentModel.DataAnnotations;
+
+namespace SquirrelBarTests.DataModelsTests;
+
+[TestFixture]
+internal class SaleDataModelTests
+{
+    [Test]
+    public void IdIsNullOrEmptyTest()
+    {
+        var sale = CreateDataModel(null, Guid.NewGuid().ToString(),
+        Guid.NewGuid().ToString(), 10, DiscountType.OnSale, 10, false,
+        CreateSubDataModel());
+        Assert.That(() => sale.Validate(),
+        Throws.TypeOf<ValidationException>());
+        sale = CreateDataModel(string.Empty, Guid.NewGuid().ToString(),
+        Guid.NewGuid().ToString(), 10, DiscountType.OnSale, 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, DiscountType.OnSale, 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, DiscountType.OnSale, 10, false,
+        CreateSubDataModel());
+        Assert.That(() => sale.Validate(),
+        Throws.TypeOf<ValidationException>());
+        sale = CreateDataModel(Guid.NewGuid().ToString(), string.Empty,
+        Guid.NewGuid().ToString(), 10, DiscountType.OnSale, 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, DiscountType.OnSale, 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, DiscountType.OnSale, 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, DiscountType.OnSale, 10,
+        false, CreateSubDataModel());
+        Assert.That(() => sale.Validate(),
+        Throws.TypeOf<ValidationException>());
+        sale = CreateDataModel(Guid.NewGuid().ToString(),
+        Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), -10, DiscountType.OnSale,
+        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, DiscountType.OnSale,
+        10, false, null);
+        Assert.That(() => sale.Validate(),
+        Throws.TypeOf<ValidationException>());
+        sale = CreateDataModel(Guid.NewGuid().ToString(),
+        Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 10, DiscountType.OnSale,
+        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 discountType = DiscountType.Certificate;
+        var discount = 1;
+        var isCancel = true;
+        var products = CreateSubDataModel();
+        var sale = CreateDataModel(saleId, workerId, buyerId, sum,
+        discountType, discount, 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.DiscountType, Is.EqualTo(discountType));
+            Assert.That(sale.Discount, Is.EqualTo(discount));
+            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, DiscountType discountType, double discount, bool
+    isCancel, List<SaleProductDataModel>? products) =>
+    new(id, workerId, buyerId, sum, discountType, discount, isCancel,
+    products);
+    private static List<SaleProductDataModel> CreateSubDataModel()
+    => [new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 1)];
+}

SquirrelBarContracts/SquirrelBarTests/DataModelsTests/SaleProductDataModelTests.cs

@@ -0,0 +1,79 @@
+using SquirrelBarContracts.DataModels;
+using System.ComponentModel.DataAnnotations;
+
+namespace SquirrelBarTests.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);
+}
+

SquirrelBarContracts/SquirrelBarTests/DataModelsTests/WorkerDataModelTests.cs

@@ -0,0 +1,117 @@
+using SquirrelBarContracts.DataModels;
+using System.ComponentModel.DataAnnotations;
+
+namespace SquirrelBarTests.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 FioIsNotCorrectTest()
+    {
+        var model = CreateDataModel(Guid.NewGuid().ToString(), "Иванов", Guid.NewGuid().ToString(), DateTime.Now.AddYears(-20), DateTime.Now, false);
+        Assert.That(() => model.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 = "Иванов И. И.";
+        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);
+}

SquirrelBarContracts/SquirrelBarTests/SquirrelBarTests.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="..\SquirrelBarContracts\SquirrelBarContracts.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Using Include="NUnit.Framework" />
+  </ItemGroup>
+
+</Project>