xunit▌

Comprehensive XUnit testing guide covering standard facts, data-driven theories, and best practices. \n \n Covers test structure using Arrange-Act-Assert pattern, naming conventions, and fixture-based setup/teardown with IClassFixture<T> and ICollectionFixture<T> \n Explains data-driven testing with [Theory] combined with [InlineData] , [MemberData] , and [ClassData] attributes, plus custom data attribute creation \n Details assertion methods for equality, collections, regex patterns,