1 лаба

SnowMaidenContracts/SnowMaidenContracts.sln

@@ -3,7 +3,9 @@ Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio Version 17
 VisualStudioVersion = 17.11.35312.102
 MinimumVisualStudioVersion = 10.0.40219.1
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SnowMaidenContracts", "SnowMaidenContracts\SnowMaidenContracts.csproj", "{3DC5F9A5-F527-412A-ABB4-083432D2C54E}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "SnowMaidenContracts", "SnowMaidenContracts\SnowMaidenContracts.csproj", "{3DC5F9A5-F527-412A-ABB4-083432D2C54E}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SnowMaidenTests", "SnowMaidenTests\SnowMaidenTests.csproj", "{E9BC9181-A413-46D0-9B6D-C215F995DB45}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -15,6 +17,10 @@ Global
 		{3DC5F9A5-F527-412A-ABB4-083432D2C54E}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{3DC5F9A5-F527-412A-ABB4-083432D2C54E}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{3DC5F9A5-F527-412A-ABB4-083432D2C54E}.Release|Any CPU.Build.0 = Release|Any CPU
+		{E9BC9181-A413-46D0-9B6D-C215F995DB45}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{E9BC9181-A413-46D0-9B6D-C215F995DB45}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{E9BC9181-A413-46D0-9B6D-C215F995DB45}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{E9BC9181-A413-46D0-9B6D-C215F995DB45}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

SnowMaidenContracts/SnowMaidenContracts/Class1.cs

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

SnowMaidenContracts/SnowMaidenContracts/DataModels/IceCreamDataModel.cs

@@ -0,0 +1,51 @@
+
+using SnowMaidenContracts.Enums;
+using SnowMaidenContracts.Extensions;
+using SnowMaidenContracts.Exceptions;
+using SnowMaidenContracts.Infrastructure;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SnowMaidenContracts.DataModels;
+
+public class IceCreamDataModel(string id, string icecreamName, IceCreamType icecreamType, string manufacturerId, double price, bool isDeleted) : IValidation
+{   
+    public string Id { get; private set; } = id;
+
+    public string IceCreamName { get; private set; } = icecreamName;
+
+    public IceCreamType IceCreamType { get; private set; } = icecreamType;
+
+    public string ManufacturerId { get; private set; } = manufacturerId;
+
+    public double Price { get; private set; } = price;
+
+    public bool IsDeleted { get; private set; } = isDeleted;
+
+    public void Validate()
+    {
+        if (Id.IsEmpty())
+            throw new ValidationException("Field Id is empty");
+
+        if (!Id.IsGuid())
+            throw new ValidationException("The value in the field Id is not a unique identifier");
+
+        if (IceCreamName.IsEmpty())
+            throw new ValidationException("Field ProductName is empty");
+
+        if (IceCreamType == IceCreamType.None)
+            throw new ValidationException("Field ProductType is empty");
+
+        if (ManufacturerId.IsEmpty())
+            throw new ValidationException("Field ManufacturerId is empty");
+
+        if (!ManufacturerId.IsGuid())
+            throw new ValidationException("The value in the field ManufacturerId is not a unique identifier");
+
+        if (Price <= 0)
+            throw new ValidationException("Field Price is less than or equal to 0");
+    }
+}

SnowMaidenContracts/SnowMaidenContracts/DataModels/IceCreamHistoryDataModel.cs

@@ -0,0 +1,32 @@
+using SnowMaidenContracts.Extensions;
+using SnowMaidenContracts.Exceptions;
+using SnowMaidenContracts.Infrastructure;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SnowMaidenContracts.DataModels;
+
+
+public class IceCreamHistoryDataModel(string icecreamId, double oldPrice) : IValidation
+{
+    public string IceCreamId { get; private set; } = icecreamId;
+
+    public double OldPrice { get; private set; } = oldPrice;
+
+    public DateTime ChangeDate { get; private set; } = DateTime.UtcNow;
+
+    public void Validate()
+    {
+        if (IceCreamId.IsEmpty())
+            throw new ValidationException("Field IceCreamId is empty");
+
+        if (!IceCreamId.IsGuid())
+            throw new ValidationException("The value in the field IceCreamId is not a unique identifier");
+
+        if (OldPrice <= 0)
+            throw new ValidationException("Field OldPrice is less than or equal to 0");
+    }
+}

SnowMaidenContracts/SnowMaidenContracts/DataModels/ManufacturerDataModel.cs

@@ -0,0 +1,33 @@
+using SnowMaidenContracts.Extensions;
+using SnowMaidenContracts.Exceptions;
+using SnowMaidenContracts.Infrastructure;
+using System;
+using System.Collections.Generic;
+using System.Linq;  
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SnowMaidenContracts.DataModels;
+
+public class ManufacturerDataModel(string id, string manufacturerName, string? prevManufacturerName, string? prevPrevManufacturerName) : IValidation
+{
+    public string Id { get; private set; } = id;
+
+    public string ManufacturerName { get; private set; } = manufacturerName;
+
+    public string? PrevManufacturerName { get; private set; } = prevManufacturerName;
+
+    public string? PrevPrevManufacturerName { get; private set; } = prevPrevManufacturerName;
+
+    public void Validate()
+    {
+        if (Id.IsEmpty())
+            throw new ValidationException("Field Id is empty");
+
+        if (!Id.IsGuid())
+            throw new ValidationException("The value in the field Id is not a unique identifier");
+
+        if (ManufacturerName.IsEmpty())
+            throw new ValidationException("Field ManufacturerName is empty");
+    }
+}

SnowMaidenContracts/SnowMaidenContracts/DataModels/PostDataModel.cs

@@ -0,0 +1,52 @@
+using SnowMaidenContracts.Enums;
+using SnowMaidenContracts.Extensions;
+using SnowMaidenContracts.Exceptions;
+using SnowMaidenContracts.Infrastructure;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SnowMaidenContracts.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");
+    }
+}

SnowMaidenContracts/SnowMaidenContracts/DataModels/SalaryDataModel.cs

@@ -0,0 +1,31 @@
+using SnowMaidenContracts.Extensions;
+using SnowMaidenContracts.Exceptions;
+using SnowMaidenContracts.Infrastructure;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SnowMaidenContracts.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");
+    }
+}

SnowMaidenContracts/SnowMaidenContracts/DataModels/SaleDataModel.cs

@@ -0,0 +1,48 @@
+using SnowMaidenContracts.Extensions;
+using SnowMaidenContracts.Exceptions;
+using SnowMaidenContracts.Infrastructure;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SnowMaidenContracts.DataModels;
+
+public class SaleDataModel(string id, string workerId,  double sum, bool isCancel, List<SaleProductDataModel> products) : IValidation
+{
+    public string Id { get; private set; } = id;
+
+    public string WorkerId { get; private set; } = workerId;
+
+    
+
+    public DateTime SaleDate { get; private set; } = DateTime.UtcNow;
+
+    public double Sum { get; private set; } = sum;
+
+    public bool IsCancel { get; private set; } = isCancel;
+
+    public List<SaleProductDataModel> Products { get; private set; } = products;
+
+    public void Validate()
+    {
+        if (Id.IsEmpty())
+            throw new ValidationException("Field Id is empty");
+
+        if (!Id.IsGuid())
+            throw new ValidationException("The value in the field Id is not a unique identifier");
+
+        if (WorkerId.IsEmpty())
+            throw new ValidationException("Field WorkerId is empty");
+
+        if (!WorkerId.IsGuid())
+            throw new ValidationException("The value in the field WorkerId is not a unique identifier");
+
+        if (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");
+    }
+}

SnowMaidenContracts/SnowMaidenContracts/DataModels/SaleProductDataModel.cs

@@ -0,0 +1,37 @@
+using SnowMaidenContracts.Extensions;
+using SnowMaidenContracts.Exceptions;
+using SnowMaidenContracts.Infrastructure;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SnowMaidenContracts.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");
+    }
+}

SnowMaidenContracts/SnowMaidenContracts/DataModels/WorkerDataModel.cs

@@ -0,0 +1,52 @@
+using SnowMaidenContracts.Extensions;
+using SnowMaidenContracts.Exceptions;
+using SnowMaidenContracts.Infrastructure;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SnowMaidenContracts.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()})");
+    }
+}

SnowMaidenContracts/SnowMaidenContracts/Enums/IceCreamType.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SnowMaidenContracts.Enums;
+
+public enum IceCreamType
+{
+    None = 0,
+    IceCream = 1,
+    Sherbet = 2,
+    FruitIce = 3,
+    Popsicle = 4,
+    CremeBrulee = 5
+}

SnowMaidenContracts/SnowMaidenContracts/Enums/PostType.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SnowMaidenContracts.Enums;
+
+public enum PostType
+{
+    None = 0,
+    Driver = 1,
+    Seller = 2,
+    Assistant = 3
+}
+

SnowMaidenContracts/SnowMaidenContracts/Exceptions/ValidationException.cs

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

SnowMaidenContracts/SnowMaidenContracts/Extensions/StringExtensions.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SnowMaidenContracts.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 _);
+    }
+}

SnowMaidenContracts/SnowMaidenContracts/Infrastructure/IValidation.cs

@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SnowMaidenContracts.Infrastructure;
+
+public interface IValidation
+{
+    void Validate();
+}
+    

SnowMaidenContracts/SnowMaidenTests/DataModelsTests/IceCreamDataModelTests.cs

@@ -0,0 +1,92 @@
+
+using SnowMaidenContracts.Enums;
+using SnowMaidenContracts.DataModels;
+using SnowMaidenContracts.Exceptions;
+
+namespace SnowMaidenTests.DataModelsTests;
+
+[TestFixture]
+internal class IceCreamDataModelTests
+{
+	[Test]
+	public void IdIsNullOrEmptyTest()
+	{
+		var icecream = CreateDataModel(null, "name", IceCreamType.Popsicle, Guid.NewGuid().ToString(), 10, false);
+		Assert.That(() => icecream.Validate(), Throws.TypeOf<ValidationException>());
+		icecream = CreateDataModel(string.Empty, "name", IceCreamType.Popsicle, Guid.NewGuid().ToString(), 10, false);
+		Assert.That(() => icecream.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void IdIsNotGuidTest()
+	{
+		var icecream = CreateDataModel("id", "name", IceCreamType.Popsicle, Guid.NewGuid().ToString(), 10, false);
+		Assert.That(() => icecream.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void IceCreamNameIsEmptyTest()
+	{
+		var icecream = CreateDataModel(Guid.NewGuid().ToString(), null, IceCreamType.Popsicle, Guid.NewGuid().ToString(), 10, false);
+		Assert.That(() => icecream.Validate(), Throws.TypeOf<ValidationException>());
+		icecream = CreateDataModel(Guid.NewGuid().ToString(), string.Empty, IceCreamType.Popsicle, Guid.NewGuid().ToString(), 10, false);
+		Assert.That(() => icecream.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void IceCreamTypeIsNoneTest()
+	{
+		var icecream = CreateDataModel(Guid.NewGuid().ToString(), null, IceCreamType.None, Guid.NewGuid().ToString(), 10, false);
+		Assert.That(() => icecream.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void ManufacturerIdIsNullOrEmptyTest()
+	{
+		var icecream = CreateDataModel(Guid.NewGuid().ToString(), "name", IceCreamType.Popsicle, null, 10, false);
+		Assert.That(() => icecream.Validate(), Throws.TypeOf<ValidationException>());
+		icecream = CreateDataModel(Guid.NewGuid().ToString(), "name", IceCreamType.Popsicle, string.Empty, 10, false);
+		Assert.That(() => icecream.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void ManufacturerIdIsNotGuidTest()
+	{
+		var icecream = CreateDataModel(Guid.NewGuid().ToString(), "name", IceCreamType.Popsicle, "manufacturerId", 10, false);
+		Assert.That(() => icecream.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void PriceIsLessOrZeroTest()
+	{
+		var icecream = CreateDataModel(Guid.NewGuid().ToString(), "name", IceCreamType.Popsicle, Guid.NewGuid().ToString(), 0, false);
+		Assert.That(() => icecream.Validate(), Throws.TypeOf<ValidationException>());
+		icecream = CreateDataModel(Guid.NewGuid().ToString(), "name", IceCreamType.Popsicle, Guid.NewGuid().ToString(), -10, false);
+		Assert.That(() => icecream.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void AllFieldsIsCorrectTest()
+	{
+		var icecreamId = Guid.NewGuid().ToString();
+		var icecreamName = "name";
+		var icecreamType = IceCreamType.Popsicle;
+		var icecreamManufacturerId = Guid.NewGuid().ToString();
+		var icecreamPrice = 10;
+		var icecreamIsDelete = false;
+		var icecream = CreateDataModel(icecreamId, icecreamName, icecreamType, icecreamManufacturerId, icecreamPrice, icecreamIsDelete);
+		Assert.That(() => icecream.Validate(), Throws.Nothing);
+		Assert.Multiple(() =>
+		{
+			Assert.That(icecream.Id, Is.EqualTo(icecreamId));
+			Assert.That(icecream.IceCreamName, Is.EqualTo(icecreamName));
+			Assert.That(icecream.IceCreamType, Is.EqualTo(icecreamType));
+			Assert.That(icecream.ManufacturerId, Is.EqualTo(icecreamManufacturerId));
+			Assert.That(icecream.Price, Is.EqualTo(icecreamPrice));
+			Assert.That(icecream.IsDeleted, Is.EqualTo(icecreamIsDelete));
+		});
+	}
+
+	private static IceCreamDataModel CreateDataModel(string? id, string? icecreamName, IceCreamType icecreamType, string? manufacturerId, double price, bool isDeleted) =>
+		new(id, icecreamName, icecreamType, manufacturerId, price, isDeleted);
+}

SnowMaidenContracts/SnowMaidenTests/DataModelsTests/IceCreamHistoryDataModelTests.cs

@@ -0,0 +1,52 @@
+using SnowMaidenContracts.DataModels;
+using SnowMaidenContracts.Exceptions;
+
+namespace SnowMaidenTests.DataModelsTests;
+
+[TestFixture]
+internal class IceCreamHistoryDataModelTests
+{
+    [Test]
+    public void IceCreamIdIsNullOrEmptyTest()
+    {
+        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 IceCreamIdIsNotGuidTest()
+    {
+        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 icecreamId = Guid.NewGuid().ToString();
+        var oldPrice = 10;
+        var productHistory = CreateDataModel(icecreamId, oldPrice);
+        Assert.That(() => productHistory.Validate(), Throws.Nothing);
+        Assert.Multiple(() =>
+        {
+            Assert.That(productHistory.IceCreamId, Is.EqualTo(icecreamId));
+            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 IceCreamHistoryDataModel CreateDataModel(string? icecreamId, double oldPrice) =>
+        new(icecreamId, oldPrice);
+}

SnowMaidenContracts/SnowMaidenTests/DataModelsTests/ManufacturerDataModelTests.cs

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

SnowMaidenContracts/SnowMaidenTests/DataModelsTests/PostDataModelTests.cs

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

SnowMaidenContracts/SnowMaidenTests/DataModelsTests/SalaryDataModelTests.cs

@@ -0,0 +1,51 @@
+using SnowMaidenContracts.DataModels;
+using SnowMaidenContracts.Exceptions;
+
+namespace SnowMaidenTests.DataModelsTests;
+[TestFixture]
+internal class SalaryDataModelTests
+{
+	[Test]
+	public void WorkerIdIsEmptyTest()
+	{
+		var salary = CreateDataModel(null, DateTime.Now, 10);
+		Assert.That(() => salary.Validate(), Throws.TypeOf<ValidationException>());
+		salary = CreateDataModel(string.Empty, DateTime.Now, 10);
+		Assert.That(() => salary.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void WorkerIdIsNotGuidTest()
+	{
+		var salary = CreateDataModel("workerId", DateTime.Now, 10);
+		Assert.That(() => salary.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void PriceIsLessOrZeroTest()
+	{
+		var salary = CreateDataModel(Guid.NewGuid().ToString(), DateTime.Now, 0);
+		Assert.That(() => salary.Validate(), Throws.TypeOf<ValidationException>());
+		salary = CreateDataModel(Guid.NewGuid().ToString(), DateTime.Now, -10);
+		Assert.That(() => salary.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void AllFieldsIsCorrectTest()
+	{
+		var workerId = Guid.NewGuid().ToString();
+		var salaryDate = DateTime.Now.AddDays(-3).AddMinutes(-5);
+		var workerSalary = 10;
+		var salary = CreateDataModel(workerId, salaryDate, workerSalary);
+		Assert.That(() => salary.Validate(), Throws.Nothing);
+		Assert.Multiple(() =>
+		{
+			Assert.That(salary.WorkerId, Is.EqualTo(workerId));
+			Assert.That(salary.SalaryDate, Is.EqualTo(salaryDate));
+			Assert.That(salary.Salary, Is.EqualTo(workerSalary));
+		});
+	}
+
+	private static SalaryDataModel CreateDataModel(string? workerId, DateTime salaryDate, double workerSalary) =>
+		new(workerId, salaryDate, workerSalary);
+}

SnowMaidenContracts/SnowMaidenTests/DataModelsTests/SaleDataModelTests.cs

@@ -0,0 +1,82 @@
+using SnowMaidenContracts.DataModels;
+using SnowMaidenContracts.Exceptions;
+
+namespace SnowMaidenTests.DataModelsTests;
+[TestFixture]
+internal class SaleDataModelTests
+{
+	[Test]
+	public void IdIsNullOrEmptyTest()
+	{
+		var sale = CreateDataModel(null,  Guid.NewGuid().ToString(), 10, false, CreateSubDataModel());
+		Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());
+		sale = CreateDataModel(string.Empty,  Guid.NewGuid().ToString(), 10, false, CreateSubDataModel());
+		Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void IdIsNotGuidTest()
+	{
+		var sale = CreateDataModel("id", Guid.NewGuid().ToString(), 10, false, CreateSubDataModel());
+		Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());
+	}
+	[Test]
+	public void WorkerIdIsNullOrEmptyTest()
+	{
+		var sale = CreateDataModel(null, Guid.NewGuid().ToString(), 10, false, CreateSubDataModel());
+		Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());
+		sale = CreateDataModel( string.Empty, Guid.NewGuid().ToString(), 10, false, CreateSubDataModel());
+		Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void WorkerIdIsNotGuidTest()
+	{
+		var sale = CreateDataModel( "workerId", Guid.NewGuid().ToString(), 10, false, CreateSubDataModel());
+		Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void SumIsLessOrZeroTest()
+	{
+		var sale = CreateDataModel( Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 0, false, CreateSubDataModel());
+		Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());
+		sale = CreateDataModel( Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), -10, false, CreateSubDataModel());
+		Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void ProductsIsNullOrEmptyTest()
+	{
+		var sale = CreateDataModel( Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 10, false, null);
+		Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());
+		sale = CreateDataModel( Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 10, false, []);
+		Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());
+	}
+
+	[Test]
+	public void AllFieldsIsCorrectTest()
+	{
+		var saleId = Guid.NewGuid().ToString();
+		var workerId = Guid.NewGuid().ToString();
+		var sum = 10;
+		var isCancel = true;
+		var products = CreateSubDataModel();
+		var sale = CreateDataModel(saleId, workerId, sum, isCancel, products);
+		Assert.That(() => sale.Validate(), Throws.Nothing);
+		Assert.Multiple(() =>
+		{
+			Assert.That(sale.Id, Is.EqualTo(saleId));
+			Assert.That(sale.WorkerId, Is.EqualTo(workerId));
+			Assert.That(sale.Sum, Is.EqualTo(sum));
+			Assert.That(sale.IsCancel, Is.EqualTo(isCancel));
+			Assert.That(sale.Products, Is.EquivalentTo(products));
+		});
+	}
+
+	private static SaleDataModel CreateDataModel(string? id, string? workerId, double sum, bool isCancel, List<SaleProductDataModel>? products) =>
+		new(id, workerId, sum, isCancel, products);
+
+	private static List<SaleProductDataModel> CreateSubDataModel()
+		=> [new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 1)];
+}

SnowMaidenContracts/SnowMaidenTests/DataModelsTests/SaleProductDataModelTests.cs

@@ -0,0 +1,68 @@
+using SnowMaidenContracts.DataModels;
+using SnowMaidenContracts.Exceptions;
+
+namespace SnowMaidenTests.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);
+}

SnowMaidenContracts/SnowMaidenTests/DataModelsTests/WorkerDataModelTests.cs

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

SnowMaidenContracts/SnowMaidenTests/SnowMaidenTests.csproj

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