概要
The Unit Testing Expert skill transforms Claude into a specialized QA and software testing companion, focused on the Vitest and Jest ecosystems. It provides deep expertise in Test-Driven Development (TDD) cycles, sophisticated mocking strategies, and robust test architecture patterns like AAA (Arrange-Act-Assert) and Given-When-Then. Whether you are building complex asynchronous logic or simple utility functions, this skill ensures your codebase is resilient by guiding the creation of maintainable, high-coverage unit tests and helping you avoid common pitfalls like test interdependence or fragile assertions.
