xunit

Write parameterized xUnit tests in C# using the `[Theory]` attribute combined with `[InlineData]` to pass multiple data sets to a single test method, verifying expected behaviors across different inputs.

Mock dependencies in C# xUnit tests using Moq, setting up mock objects and verifying interactions to isolate the system under test from external logic and ensure reliable unit testing.

Test asynchronous operations with xUnit by implementing the `IAsyncLifetime` interface, which provides `InitializeAsync` and `DisposeAsync` methods to handle setup and teardown for asynchronous test cases.

Use FluentAssertions with xUnit to generate readable assertions in C# unit testing, allowing you to express expected outcomes fluently and improve code quality and test maintenance.

Verify exception handling in xUnit by asserting that specific exceptions are thrown during test execution, ensuring your C# code correctly manages error conditions and edge cases.

Refactor existing C# unit tests to improve code quality, update assertions to use FluentAssertions, integrate Moq for better mocking, and ensure comprehensive test coverage for new features.