XCTest is a popular testing framework used primarily for iOS and macOS applications. It allows developers to write unit tests, performance tests, and UI tests for their applications. However, XCTest is not applicable to the Windows environment as it is specifically designed for Apple's ecosystem.

For Windows developers, there are several viable alternatives for unit testing. Some of the most popular frameworks include MSTest, NUnit, and xUnit.net. These frameworks provide robust testing capabilities and can be easily integrated into your development workflow. In this article, we will explore how to use these frameworks to write and run unit tests on Windows.

Examples:

1. Using MSTest:

MSTest is a testing framework developed by Microsoft. It is integrated with Visual Studio and is commonly used for testing .NET applications.

Sample Code:

   using Microsoft.VisualStudio.TestTools.UnitTesting;



   namespace MyApplication.Tests

   {

       [TestClass]

       public class CalculatorTests

       {

           [TestMethod]

           public void Add_TwoNumbers_ReturnsSum()

           {

               // Arrange

               var calculator = new Calculator();



               // Act

               var result = calculator.Add(2, 3);



               // Assert

               Assert.AreEqual(5, result);

           }

       }

   }

Running Tests via CMD:

   vstest.console.exe MyApplication.Tests.dll

2. Using NUnit:

NUnit is an open-source unit testing framework for .NET. It is widely used and supports a range of assertions and test attributes.

Sample Code:

   using NUnit.Framework;



   namespace MyApplication.Tests

   {

       [TestFixture]

       public class CalculatorTests

       {

           [Test]

           public void Add_TwoNumbers_ReturnsSum()

           {

               // Arrange

               var calculator = new Calculator();



               // Act

               var result = calculator.Add(2, 3);



               // Assert

               Assert.AreEqual(5, result);

           }

       }

   }

Running Tests via CMD:

   nunit3-console MyApplication.Tests.dll

3. Using xUnit.net:

xUnit.net is a free, open-source, community-focused unit testing tool for the .NET Framework. It is designed to be simple and extensible.

Sample Code:

   using Xunit;



   namespace MyApplication.Tests

   {

       public class CalculatorTests

       {

           [Fact]

           public void Add_TwoNumbers_ReturnsSum()

           {

               // Arrange

               var calculator = new Calculator();



               // Act

               var result = calculator.Add(2, 3);



               // Assert

               Assert.Equal(5, result);

           }

       }

   }

Running Tests via CMD:

   dotnet test