Guide test-driven development with red-green-refactor loops and anti-pattern detection.
npx skills add https://github.com/kk20300113-png/my-claude-skills --skill tdd-kk20300113-png
Please help me install this Agent Skill. Skill: tdd Source: https://github.com/kk20300113-png/my-claude-skills/tree/main/tdd Command: npx skills add https://github.com/kk20300113-png/my-claude-skills --skill tdd-kk20300113-png
This Skill solves the common problem of writing fragile, implementation-coupled tests that break during code refactors even when user-facing behavior remains unchanged, and helps developers build reliable, maintainable software through structured test-first development practices.
Use the tdd skill to implement the new user password reset feature using test-driven development, following the red-green-refactor loop for each new behavior.
High-intent search queries and answers about installing and using this skill.
Implementation-coupled tests break during refactoring because they assert internal logic rather than public behavior. Test-driven development solves this by guiding you to write behavior-focused integration tests that validate the public interface, surviving internal code restructuring.
Test-driven development workflow starts with pre-implementation planning, writes a failing behavior test, implements minimal code to pass it, and then safely refactors. This incremental cycle ensures each new behavior is validated before the internal implementation is optimized.
Mocking in integration testing should be applied exclusively at external system boundaries. Test-driven development best practices dictate mocking only external dependencies to ensure tests remain refactor-safe and validate real user-facing behavior across internal code paths.
Avoid horizontal slicing—writing all tests before implementation—in test-first development. Low-value brittle tests are prevented by following incremental test-implementation cycles that focus on validating real user behavior through the public interface rather than internal logic.
Test-driven development applies to software development workflows involving feature builds, bug fixes, and integration test creation for codebases of any size. It provides structured test-first guidance and anti-pattern detection regardless of project scale or existing architecture.
Compass-BrandEnforce RED-GREEN-REFACTOR cycles across JavaScript, TypeScript, Python, and Go projects.
luicabref97Enforce a red-green-refactor cycle with failing tests before production code.
HomericIntelligenceMeasure code coverage percentage and identify untested code paths with pytest.
shafibabarCreate and validate Gherkin feature files for BDD specifications.
