소개
This skill automates and enforces the 'Red' phase of the Test-Driven Development (TDD) cycle within Claude Code. It provides domain-specific guidance on writing descriptive, behavior-focused test cases using the Arrange-Act-Assert (AAA) pattern across multiple languages like Python, Go, and TypeScript. By facilitating the creation of tests that fail for the correct reasons, it ensures robust code design and prevents trivial passes, helping developers maintain high code quality and test coverage from the very start of a feature's lifecycle.