소개
Testing Core is a comprehensive Claude Code skill designed to streamline the testing lifecycle by providing domain-specific guidance on test architecture, mocking strategies, and implementation patterns across multiple programming languages. It helps developers move beyond simple test generation by enforcing the Test Pyramid philosophy, implementing the Arrange-Act-Assert (AAA) structure, and establishing consistent naming conventions. Whether you are setting up a new test suite or improving code coverage in a legacy system, this skill provides the necessary scaffolding for Python, TypeScript, and Rust to ensure your tests are maintainable, deterministic, and focused on behavior rather than implementation details.