csharp-xunit

Write data-driven unit tests in C# using xUnit by applying the [Theory] attribute with [InlineData] or [MemberData] to validate multiple scenarios against a single test method. This approach ensures clear organization while covering diverse input parameters.

The best way to structure a .NET test project for xUnit is to create a project named [YourProjectName].Tests and organize tests using clear naming conventions. Apply standard setup, teardown, and fixture usage patterns to maintain reliable outcomes.

Apply the AAA pattern in xUnit tests by explicitly separating your code into Arrange, Act, and Assert phases. Using [Fact] attributes for single behaviors, this structure ensures maintainable tests with clear execution flow and reliable validation.

Yes, you can use mocks with xUnit for C# unit testing. The framework provides guidance on implementing mocking alongside test organization patterns, allowing you to isolate dependencies and validate behaviors reliably during setup and teardown.

Use [Fact] in xUnit when validating a single specific behavior, and use [Theory] when you need data-driven tests covering multiple scenarios. [Theory] works with [InlineData] and [MemberData] to execute the same test logic across diverse inputs.

Yes, xUnit supports setup and teardown patterns for .NET testing through fixtures and clear organizational structures. These patterns integrate seamlessly with mocking and the AAA pattern to ensure maintainable unit tests across your projects.