csharp-xunit

Your goal is to help me write effective unit tests with XUnit, covering both standard and data-driven testing approaches. - Use a separate test project with naming convention [ProjectName].Tests - Reference Microsoft.NET.Test.Sdk, xunit, and xunit.runner.visualstudio packages - Create test classes that match the classes being tested (e.g., CalculatorTests for Calculator ) - Use .NET SDK test commands: dotnet test for running tests - No test class attributes required (unlike MSTest/NUnit) - Use fact-based tests with [Fact] attribute for simple tests - Follow the Arrange-Act-Assert (AAA) pattern - Name tests using the pattern MethodName_Scenario_ExpectedBehavior - Use constructor for setup and IDisposable.Dispose() for teardown - Use IClassFixture for shared context between tests in a class - Use ICollectionFixture for shared context between multiple test classes - Keep tests focused on a single behavior - Avoid testing multiple behaviors in one test method - Use clear assertions that express intent - Include only the assertions needed to verify the test case - Make tests independent and idempotent (can run in any order) - Avoid test interdependencies - Use [Theory] combined with data source attributes - Use [InlineData] for inline test data - Use [MemberData] for method-based test data - Use [ClassData] for class-based test data - Create custom data attributes by implementing...