소개
This skill equips Claude with specialized knowledge of the testing pyramid, enabling the generation of robust test suites across all layers of an application. It provides domain-specific guidance for isolated unit testing using the Arrange-Act-Assert pattern, complex integration testing involving databases and API contracts, and full E2E flows with Playwright. By following Test-Driven Development (TDD) workflows and leveraging patterns like fixtures and factories, this skill ensures high code reliability, easier refactoring, and superior software quality for professional development environments.