csharp-xunit

Data-driven tests in C# using xUnit are created using the [Theory] and [InlineData] attributes to pass multiple data sets to a single test method. This approach ensures coverage of multiple scenarios with minimal code duplication by parameterizing test inputs.

The best way to structure unit tests for C# projects is by following organizational best practices that separate test logic from implementation code. Structuring tests effectively improves code quality, testing efficiency, and ensures that software remains robust and maintainable.

Custom data attributes for xUnit tests are created by extending the data-driven testing capabilities beyond standard [InlineData]. This technique allows developers to supply complex or dynamic parameterized data to test methods, ensuring comprehensive coverage for methods that process varied user inputs.

Parameterized tests should be used when you need to validate a method against multiple input scenarios without duplicating test code. By utilizing xUnit's [Theory] attribute, you can execute the same test logic across various data sets to improve testing efficiency and software quality.