How do you use xUnit for unit testing in .NET Core?

xUnit is a popular testing framework for .NET Core, which allows developers to write unit tests in a simple and efficient way. Here are the steps to use xUnit for unit testing in .NET Core:

1. Create a new .NET Core test project: Use the dotnet CLI to create a new test project:

dotnet new xunit -n MyProject.Tests 

2. Add a reference to the project under test: Add a reference to the project you want to test:

dotnet add reference ../MyProject/MyProject.csproj 

3. Write a test: In the test project, create a new C# file and write a test method:

using Xunit;

public class MyTestClass
{
    [Fact]
    public void MyTestMethod()
    {
        // Arrange
        var x = 1;
        var y = 2;

        // Act
        var result = x + y;

        // Assert
        Assert.Equal(3, result);
    }
}

 

4. Run the test: Use the dotnet CLI to run the tests:

dotnet test


This will build the test project and execute all tests. The test results will be displayed in the console.

5. Repeat: Repeat steps 3-4 for additional tests.

Note that xUnit supports many other features, such as parameterized tests, test fixtures, and test output. You can find more information in the xUnit documentation.