Модели и тесты

SeniorPomidorContracts/SeniorPomidorContracts.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}") = "SeniorPomidorContracts", "SeniorPomidorContracts\SeniorPomidorContracts.csproj", "{8A2B4578-792A-4BCB-816B-34D2F4277419}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SeniorPomidorTests", "SeniorPomidorTests\SeniorPomidorTests.csproj", "{6B124CD9-5257-4E62-B736-9C59CCAC19D4}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -15,6 +17,10 @@ Global
 		{8A2B4578-792A-4BCB-816B-34D2F4277419}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{8A2B4578-792A-4BCB-816B-34D2F4277419}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{8A2B4578-792A-4BCB-816B-34D2F4277419}.Release|Any CPU.Build.0 = Release|Any CPU
+		{6B124CD9-5257-4E62-B736-9C59CCAC19D4}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{6B124CD9-5257-4E62-B736-9C59CCAC19D4}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{6B124CD9-5257-4E62-B736-9C59CCAC19D4}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{6B124CD9-5257-4E62-B736-9C59CCAC19D4}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

SeniorPomidorContracts/SeniorPomidorContracts/DataModels/HarvestDataModel.cs

@@ -0,0 +1,24 @@
+using SeniorPomidorContracts.Exceptions;
+using SeniorPomidorContracts.Extensions;
+using SeniorPomidorContracts.Infrastructure;
+
+namespace SeniorPomidorContracts.DataModels;
+
+public class HarvestDataModel(string id, int amount) : IValidation
+{
+    public string Id { get; private set; } = id;
+
+    public int Amount { get; private set; } = amount;
+
+    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 (Amount < 0)
+            throw new ValidationException("Field Amount is less than 0");
+    }
+}

SeniorPomidorContracts/SeniorPomidorContracts/DataModels/ProductDataModel.cs

@@ -0,0 +1,49 @@
+using SeniorPomidorContracts.Exceptions;
+using SeniorPomidorContracts.Extensions;
+using SeniorPomidorContracts.Infrastructure;
+
+
+namespace SeniorPomidorContracts.DataModels;
+
+public class ProductDataModel(string id, string productName, string
+productTypeId, string harvestId, double price, bool isDeleted) : IValidation
+{
+    public string Id { get; private set; } = id;
+
+    public string ProductName { get; private set; } = productName;
+
+    public string ProductTypeId { get; private set; } = productTypeId;
+
+    public string HarvestId { get; private set; } = harvestId;
+
+    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 isnot a unique identifier");
+
+        if (ProductName.IsEmpty())
+            throw new ValidationException("Field ProductName is empty");
+
+        if (ProductTypeId.IsEmpty())
+            throw new ValidationException("Field ProductTypeId is empty");
+
+        if (!ProductTypeId.IsGuid())
+            throw new ValidationException("The value in the field ProductTypeId is not a unique identifier");
+
+        if (HarvestId.IsEmpty())
+            throw new ValidationException("Field HarvestId is empty");
+
+        if (!HarvestId.IsGuid())
+            throw new ValidationException("The value in the field HarvestId is not a unique identifier");
+
+        if (Price <= 0)
+            throw new ValidationException("Field Price is less than or equal to 0");
+    }
+}

SeniorPomidorContracts/SeniorPomidorContracts/DataModels/ProductHistoryDataModel.cs

@@ -0,0 +1,29 @@
+using SeniorPomidorContracts.Extensions;
+using SeniorPomidorContracts.Infrastructure;
+using SeniorPomidorContracts.Exceptions;
+
+
+namespace SeniorPomidorContracts.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");
+    }
+}
+

SeniorPomidorContracts/SeniorPomidorContracts/DataModels/ProductTypeDataModel.cs

@@ -0,0 +1,30 @@
+using SeniorPomidorContracts.Enums;
+using SeniorPomidorContracts.Infrastructure;
+using SeniorPomidorContracts.Exceptions;
+using SeniorPomidorContracts.Extensions;
+
+namespace SeniorPomidorContracts.DataModels;
+
+public class ProductTypeDataModel(string id, string productTypeName, TypeOfProduct typeOfProduct) : IValidation
+{
+    public string Id { get; private set; } = id;
+
+    public string ProductTypeName { get; private set; } = productTypeName;
+
+    public TypeOfProduct TypeOfProduct { get; private set; } = typeOfProduct;
+
+    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 (ProductTypeName.IsEmpty())
+            throw new ValidationException("Field ProductTypeName is empty");
+
+        if (TypeOfProduct == TypeOfProduct.None)
+            throw new ValidationException("Field TypeOfProduct is empty");
+    }
+}

SeniorPomidorContracts/SeniorPomidorContracts/DataModels/SupplierDataModel.cs

@@ -0,0 +1,36 @@
+using SeniorPomidorContracts.Exceptions;
+using SeniorPomidorContracts.Extensions;
+using SeniorPomidorContracts.Infrastructure;
+using System.Text.RegularExpressions;
+
+namespace SeniorPomidorContracts.DataModels;
+
+public class SupplierDataModel(string id, string supplierName, string phoneNumber, double
+discountSize) : IValidation
+{
+    public string Id { get; private set; } = id;
+
+    public string SupplierName { get; private set; } = supplierName;
+
+    public string PhoneNumber { get; private set; } = phoneNumber;
+
+    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 (SupplierName.IsEmpty())
+            throw new ValidationException("Field SupplierName 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");
+    }
+}

SeniorPomidorContracts/SeniorPomidorContracts/DataModels/SupplyDataModel.cs

@@ -0,0 +1,38 @@
+using SeniorPomidorContracts.Infrastructure;
+using SeniorPomidorContracts.Exceptions;
+using SeniorPomidorContracts.Extensions;
+
+namespace SeniorPomidorContracts.DataModels;
+
+public class SupplyDataModel(string id, string supplierId, int supplyNum, DateTime supplyDate, bool isCancel, List<SupplyProductDataModel> products) : IValidation
+{
+    public string Id { get; private set; } = id;
+
+    public string? SupplierId { get; private set; } = supplierId;
+
+    public int SupplyNum { get; private set; } = supplyNum;
+
+    public DateTime SupplyDate { get; private set; } = supplyDate;
+
+    public List<SupplyProductDataModel> Products { get; private set; } = products;
+
+    public bool IsCancel { get; private set; } = isCancel;
+
+    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 (!SupplierId?.IsGuid() ?? !SupplierId?.IsEmpty() ?? false)
+            throw new ValidationException("The value in the field SupplierId is not a unique identifier");
+
+        if (SupplyNum <= 0)
+            throw new ValidationException("Field SupplyNum is empty");
+
+        if ((Products?.Count ?? 0) == 0)
+            throw new ValidationException("The sale must include products");
+    }
+}

SeniorPomidorContracts/SeniorPomidorContracts/DataModels/SupplyProductDataModel.cs

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

SeniorPomidorContracts/SeniorPomidorContracts/Enums/DiscountType.cs

@@ -0,0 +1,10 @@
+namespace SeniorPomidorContracts.Enums;
+
+[Flags]
+public enum DiscountType
+{
+    None = 0,
+    OnSale = 1,
+    RegularSupplier = 2,
+    Certificate = 4
+}

SeniorPomidorContracts/SeniorPomidorContracts/Enums/TypeOfProduct.cs

@@ -0,0 +1,9 @@
+namespace SeniorPomidorContracts.Enums;
+
+public enum TypeOfProduct
+{
+    None = 0,
+    Fruit = 1,
+    Vegetable = 2,
+    Berry = 3
+}

SeniorPomidorContracts/SeniorPomidorContracts/Exceptions/ValidationException.cs

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

SeniorPomidorContracts/SeniorPomidorContracts/Extensions/StringExtensions.cs

@@ -0,0 +1,14 @@
+namespace SeniorPomidorContracts.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 _);
+    }
+}

SeniorPomidorContracts/SeniorPomidorContracts/Infrastructure/IValidation.cs

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

SeniorPomidorContracts/SeniorPomidorTests/DataModelsTests/HarvestDataModelTest.cs

@@ -0,0 +1,53 @@
+using SeniorPomidorContracts.DataModels;
+using SeniorPomidorContracts.Exceptions;
+
+namespace SeniorPomidorTests.DataModelsTests;
+
+[TestFixture]
+internal class HarvestDataModelTest
+{
+    [Test]
+    public void IdIsNullOrEmptyTest()
+    {
+        var harvest = CreateDataModel(null, 10);
+
+        Assert.That(() => harvest.Validate(),
+        Throws.TypeOf<ValidationException>());
+
+        harvest = CreateDataModel(string.Empty, 10);
+
+        Assert.That(() => harvest.Validate(),
+        Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void IdIsNotGuidTest()
+    {
+        var harvest = CreateDataModel("id", 10);
+
+        Assert.That(() => harvest.Validate(),
+        Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void AmountIsLessZeroTest()
+    {
+        var harvest = CreateDataModel(Guid.NewGuid().ToString(), -10);
+
+        Assert.That(() => harvest.Validate(),
+        Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void AllFieldsIsCorrectTest()
+    {
+        var harvestId = Guid.NewGuid().ToString();
+        var amount = 10;
+        var harvest = CreateDataModel(harvestId, amount);
+        Assert.That(() => harvest.Validate(), Throws.Nothing);
+        Assert.Multiple(() =>
+        {
+            Assert.That(harvest.Id, Is.EqualTo(harvestId));
+            Assert.That(harvest.Amount, Is.EqualTo(amount));
+        });
+    }
+    private static HarvestDataModel CreateDataModel(string? id, int amount) =>
+      new(id, amount);
+}

SeniorPomidorContracts/SeniorPomidorTests/DataModelsTests/ProductDataModelTest.cs

@@ -0,0 +1,131 @@
+using SeniorPomidorContracts.DataModels;
+using SeniorPomidorContracts.Exceptions;
+
+namespace SeniorPomidorTests.DataModelsTests;
+
+[TestFixture]
+internal class ProductDataModelTests
+{
+    [Test]
+    public void IdIsNullOrEmptyTest()
+    {
+        var product = CreateDataModel(null, "name", Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 10, false);
+
+        Assert.That(() => product.Validate(),
+        Throws.TypeOf<ValidationException>());
+
+        product = CreateDataModel(string.Empty, "name",
+        Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 10, false);
+
+        Assert.That(() => product.Validate(),
+        Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void IdIsNotGuidTest()
+    {
+        var product = CreateDataModel("id", "name", Guid.NewGuid().ToString(),
+        Guid.NewGuid().ToString(), 10, false);
+
+        Assert.That(() => product.Validate(),
+        Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void ProductNameIsEmptyTest()
+    {
+        var product = CreateDataModel(Guid.NewGuid().ToString(), null,
+        Guid.NewGuid().ToString(),
+        Guid.NewGuid().ToString(), 10, false);
+
+        Assert.That(() => product.Validate(),
+        Throws.TypeOf<ValidationException>());
+
+        product = CreateDataModel(Guid.NewGuid().ToString(), string.Empty,
+        Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 10, false);
+
+        Assert.That(() => product.Validate(),
+        Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void ProductTypeIdIsNullOrEmptyTest()
+    {
+        var product = CreateDataModel(Guid.NewGuid().ToString(), "name", null, Guid.NewGuid().ToString(), 10, false);
+
+        Assert.That(() => product.Validate(),
+        Throws.TypeOf<ValidationException>());
+
+        product = CreateDataModel(Guid.NewGuid().ToString(), "name", string.Empty,
+        Guid.NewGuid().ToString(), 10, false);
+
+        Assert.That(() => product.Validate(),
+        Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void ProductTypeIdIsNotGuidTest()
+    {
+        var product = CreateDataModel(Guid.NewGuid().ToString(), "name", "productTypeId", Guid.NewGuid().ToString(), 10, false);
+
+        Assert.That(() => product.Validate(),
+        Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void HarvestIdIsNullOrEmptyTest()
+    {
+        var product = CreateDataModel(Guid.NewGuid().ToString(), "name", Guid.NewGuid().ToString(), null, 10, false);
+
+        Assert.That(() => product.Validate(),
+        Throws.TypeOf<ValidationException>());
+
+        product = CreateDataModel(Guid.NewGuid().ToString(), "name",
+        Guid.NewGuid().ToString(), string.Empty, 10, false);
+
+        Assert.That(() => product.Validate(),
+        Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void HarvestIdIsNotGuidTest()
+    {
+        var product = CreateDataModel(Guid.NewGuid().ToString(), "name", Guid.NewGuid().ToString(), "harvestId", 10, false);
+
+        Assert.That(() => product.Validate(),
+        Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void PriceIsLessOrZeroTest()
+    {
+        var product = CreateDataModel(Guid.NewGuid().ToString(), "name",
+        Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 0, false);
+
+        Assert.That(() => product.Validate(),
+        Throws.TypeOf<ValidationException>());
+
+        product = CreateDataModel(Guid.NewGuid().ToString(), "name",
+        Guid.NewGuid().ToString(), 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 productTypeId = Guid.NewGuid().ToString();
+        var harvestId = Guid.NewGuid().ToString();
+        var productPrice = 10;
+        var productIsDelete = false;
+        var product = CreateDataModel(productId, productName, productTypeId,
+        harvestId, 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.ProductTypeId, Is.EqualTo(productTypeId));
+            Assert.That(product.HarvestId, Is.EqualTo(harvestId));
+            Assert.That(product.Price, Is.EqualTo(productPrice));
+            Assert.That(product.IsDeleted, Is.EqualTo(productIsDelete));
+        });
+    }
+    private static ProductDataModel CreateDataModel(string? id, string? productName, string? productTypeId, string? harvestId, double price, bool isDeleted) => 
+        new(id, productName, productTypeId, harvestId, price, isDeleted);
+}

SeniorPomidorContracts/SeniorPomidorTests/DataModelsTests/ProductHistoryDataModelTest.cs

@@ -0,0 +1,53 @@
+using SeniorPomidorContracts.DataModels;
+using SeniorPomidorContracts.Exceptions;
+
+namespace SeniorPomidorTests.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);
+}
+

SeniorPomidorContracts/SeniorPomidorTests/DataModelsTests/ProductTypeDataModelTest.cs

@@ -0,0 +1,65 @@
+using SeniorPomidorContracts.DataModels;
+using SeniorPomidorContracts.Exceptions;
+using SeniorPomidorContracts.Enums;
+
+namespace SeniorPomidorTests.DataModelsTests;
+
+[TestFixture]
+internal class ProductTypeDataModelTest
+{
+    [Test]
+    public void IdIsNullOrEmptyTest()
+    {
+        var product = CreateDataModel(null, "name", TypeOfProduct.Fruit);
+
+        Assert.That(() => product.Validate(), Throws.TypeOf<ValidationException>());
+
+        product = CreateDataModel(string.Empty, "name", TypeOfProduct.Fruit);
+
+        Assert.That(() => product.Validate(), Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void IdIsNotGuidTest()
+    {
+        var product = CreateDataModel("id", "name", TypeOfProduct.Fruit);
+
+        Assert.That(() => product.Validate(), Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void ProductTypeNameIsEmptyTest()
+    {
+        var product = CreateDataModel(Guid.NewGuid().ToString(), null, TypeOfProduct.Fruit);
+
+        Assert.That(() => product.Validate(),  Throws.TypeOf<ValidationException>());
+
+        product = CreateDataModel(Guid.NewGuid().ToString(), string.Empty, TypeOfProduct.Fruit);
+
+        Assert.That(() => product.Validate(), Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void TypeOfProductIsNoneTest()
+    {
+        var product = CreateDataModel(Guid.NewGuid().ToString(), "name", TypeOfProduct.None);
+
+        Assert.That(() => product.Validate(), Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void AllFieldsIsCorrectTest()
+    {
+        var productTypeId = Guid.NewGuid().ToString();
+        var productTypeName = "name";
+        var typeOfProduct = TypeOfProduct.Fruit;
+
+        var product = CreateDataModel(productTypeId, productTypeName, typeOfProduct);
+        Assert.That(() => product.Validate(), Throws.Nothing);
+        Assert.Multiple(() =>
+        {
+            Assert.That(product.Id, Is.EqualTo(productTypeId));
+            Assert.That(product.ProductTypeName, Is.EqualTo(productTypeName));
+            Assert.That(product.TypeOfProduct, Is.EqualTo(typeOfProduct));
+        });
+    }
+
+    private static ProductTypeDataModel CreateDataModel(string? id, string? productTypeName, TypeOfProduct typeOfProduct) =>
+        new(id, productTypeName, typeOfProduct);
+}

SeniorPomidorContracts/SeniorPomidorTests/DataModelsTests/SupplierDataModelTest.cs

@@ -0,0 +1,75 @@
+using SeniorPomidorContracts.DataModels;
+using SeniorPomidorContracts.Exceptions;
+
+namespace SeniorPomidorTests.DataModelsTests;
+
+[TestFixture]
+internal class SupplierDataModelTest
+{
+    [Test]
+    public void IdIsNullOrEmptyTest()
+    {
+        var buyer = CreateDataModel(null, "name", "number", 10);
+
+        Assert.That(() => buyer.Validate(), Throws.TypeOf<ValidationException>());
+
+        buyer = CreateDataModel(string.Empty, "name", "number", 10);
+
+        Assert.That(() => buyer.Validate(), Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void IdIsNotGuidTest()
+    {
+        var buyer = CreateDataModel("id", "name", "number", 10);
+
+        Assert.That(() => buyer.Validate(), Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void NameIsNullOrEmptyTest()
+    {
+        var buyer = CreateDataModel(Guid.NewGuid().ToString(), null, "number", 10);
+
+        Assert.That(() => buyer.Validate(), Throws.TypeOf<ValidationException>());
+
+        buyer = CreateDataModel(Guid.NewGuid().ToString(), string.Empty, "number", 10);
+
+        Assert.That(() => buyer.Validate(), Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void PhoneNumberIsNullOrEmptyTest()
+    {
+        var buyer = CreateDataModel(Guid.NewGuid().ToString(), "name", null, 10);
+
+        Assert.That(() => buyer.Validate(), Throws.TypeOf<ValidationException>());
+
+        buyer = CreateDataModel(Guid.NewGuid().ToString(), "name", string.Empty, 10);
+
+        Assert.That(() => buyer.Validate(), Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void PhoneNumberIsIncorrectTest()
+    {
+        var buyer = CreateDataModel(Guid.NewGuid().ToString(), "name", "777", 10);
+        Assert.That(() => buyer.Validate(), Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void AllFieldsIsCorrectTest()
+    {
+        var buyerId = Guid.NewGuid().ToString();
+        var supplierName = "name";
+        var phoneNumber = "+7-777-777-77-77";
+        var discountSize = 11;
+        var buyer = CreateDataModel(buyerId, supplierName, phoneNumber, discountSize);
+        Assert.That(() => buyer.Validate(), Throws.Nothing);
+        Assert.Multiple(() =>
+        {
+            Assert.That(buyer.Id, Is.EqualTo(buyerId));
+            Assert.That(buyer.SupplierName, Is.EqualTo(supplierName));
+            Assert.That(buyer.PhoneNumber, Is.EqualTo(phoneNumber));
+            Assert.That(buyer.DiscountSize, Is.EqualTo(discountSize));
+        });
+    }
+    private static SupplierDataModel CreateDataModel(string? id, string? supplierName, string? phoneNumber, double discountSize) => 
+        new(id, supplierName, phoneNumber, discountSize);
+}
+

SeniorPomidorContracts/SeniorPomidorTests/DataModelsTests/SupplyDataModelTest.cs

@@ -0,0 +1,95 @@
+using SeniorPomidorContracts.DataModels;
+using SeniorPomidorContracts.Exceptions;
+
+namespace SeniorPomidorTests.DataModelsTests;
+
+[TestFixture]
+internal class SupplyDataModelTests
+{
+    [Test]
+    public void IdIsNullOrEmptyTest()
+    {
+        var sale = CreateDataModel(null, Guid.NewGuid().ToString(), 1, DateTime.UtcNow, false,
+        CreateSubDataModel());
+
+        Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());
+
+        sale = CreateDataModel(string.Empty, Guid.NewGuid().ToString(), 1, DateTime.UtcNow, false,
+        CreateSubDataModel());
+
+        Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void IdIsNotGuidTest()
+    {
+        var sale = CreateDataModel("id", Guid.NewGuid().ToString(), 1, DateTime.UtcNow, false,
+        CreateSubDataModel());
+
+        Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void SupplierIdIsNotGuidTest()
+    {
+        var sale = CreateDataModel(Guid.NewGuid().ToString(),
+         "supplierId", 1, DateTime.UtcNow, false,
+        CreateSubDataModel());
+
+        Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void NumIsLessOrZeroTest()
+    {
+        var sale = CreateDataModel(Guid.NewGuid().ToString(),
+        Guid.NewGuid().ToString(), 0, DateTime.UtcNow, false,
+        CreateSubDataModel());
+
+        Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());
+
+        sale = CreateDataModel(Guid.NewGuid().ToString(),
+        Guid.NewGuid().ToString(), -10, DateTime.UtcNow, false,
+        CreateSubDataModel());
+
+        Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void ProductsIsNullOrEmptyTest()
+    {
+        var sale = CreateDataModel(Guid.NewGuid().ToString(),
+        Guid.NewGuid().ToString(), 1, DateTime.UtcNow, false,
+        null);
+
+        Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());
+
+        sale = CreateDataModel(Guid.NewGuid().ToString(),
+        Guid.NewGuid().ToString(), 1, DateTime.UtcNow, false,
+        []);
+
+        Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());    }
+    [Test]
+    public void AllFieldsIsCorrectTest()
+    {
+        var id = Guid.NewGuid().ToString();
+        var supplierId = Guid.NewGuid().ToString();
+        var num = 1;
+        var supplyDate = DateTime.UtcNow;
+        var isCancel = true;
+        var products = CreateSubDataModel();
+        var supply = CreateDataModel(id, supplierId, num, supplyDate, isCancel, products);
+        Assert.That(() => supply.Validate(), Throws.Nothing);
+        Assert.Multiple(() =>
+        {
+            Assert.That(supply.Id, Is.EqualTo(id));
+            Assert.That(supply.SupplierId, Is.EqualTo(supplierId));
+            Assert.That(supply.SupplyNum, Is.EqualTo(num));
+            Assert.That(supply.SupplyDate, Is.EqualTo(supplyDate));
+            Assert.That(supply.IsCancel, Is.EqualTo(isCancel));
+            Assert.That(supply.Products, Is.EquivalentTo(products));
+        });
+    }
+    private static SupplyDataModel CreateDataModel(string? id, string? supplierId, int num, DateTime supplyDate, bool
+    isCancel, List<SupplyProductDataModel>? products) =>
+        new(id, supplierId, num, supplyDate, isCancel, products);
+
+    private static List<SupplyProductDataModel> CreateSubDataModel()
+    => [new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 1)];
+}

SeniorPomidorContracts/SeniorPomidorTests/DataModelsTests/SupplyProductDataModelTest.cs

@@ -0,0 +1,73 @@
+using SeniorPomidorContracts.DataModels;
+using SeniorPomidorContracts.Exceptions;
+
+namespace SeniorPomidorTests.DataModelsTests;
+
+[TestFixture]
+internal class SupplyProductDataModelTest
+{
+    [Test]
+    public void SupplyIdIsNullOrEmptyTest()
+    {
+        var supplyProduct = CreateDataModel(null, Guid.NewGuid().ToString(), 10);
+
+        Assert.That(() => supplyProduct.Validate(), Throws.TypeOf<ValidationException>());
+
+        supplyProduct = CreateDataModel(string.Empty, Guid.NewGuid().ToString(), 10);
+
+        Assert.That(() => supplyProduct.Validate(), Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void SupplyIdIsNotGuidTest()
+    {
+        var supplyProduct = CreateDataModel("supplyId", Guid.NewGuid().ToString(), 10);
+
+        Assert.That(() => supplyProduct.Validate(), Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void ProductIdIsNullOrEmptyTest()
+    {
+        var supplyProduct = CreateDataModel(Guid.NewGuid().ToString(), null, 10);
+
+        Assert.That(() => supplyProduct.Validate(), Throws.TypeOf<ValidationException>());
+
+        supplyProduct = CreateDataModel(string.Empty, Guid.NewGuid().ToString(), 10);
+
+        Assert.That(() => supplyProduct.Validate(), Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void ProductIdIsNotGuidTest()
+    {
+        var supplyProduct = CreateDataModel(Guid.NewGuid().ToString(), "productId", 10);
+
+        Assert.That(() => supplyProduct.Validate(), Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void CountIsLessOrZeroTest()
+    {
+        var supplyProduct = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 0);
+
+        Assert.That(() => supplyProduct.Validate(), Throws.TypeOf<ValidationException>());
+
+        supplyProduct = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), -10);
+
+        Assert.That(() => supplyProduct.Validate(), Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void AllFieldsIsCorrectTest()
+    {
+        var supplyId = Guid.NewGuid().ToString();
+        var productId = Guid.NewGuid().ToString();
+        var amount = 10;
+        var supplyProduct = CreateDataModel(supplyId, productId, amount);
+        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.Amount, Is.EqualTo(amount));
+        });
+    }
+    private static SupplyProductDataModel CreateDataModel(string? supplyId, string? productId, int amount) => new(supplyId, productId, amount);
+}
+

SeniorPomidorContracts/SeniorPomidorTests/SeniorPomidorTests.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="..\SeniorPomidorContracts\SeniorPomidorContracts.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Using Include="NUnit.Framework" />
+  </ItemGroup>
+
+</Project>