TDD Red Phase Coach

About

The TDD Red skill ensures high-quality code through disciplined Test-Driven Development. It forces a rigorous 'Red' phase where Claude identifies a specific acceptance criterion from your project specifications, writes exactly one failing test, and confirms the failure before any implementation begins. This prevents 'leap-frogging' to solutions and ensures every line of code is justified by a failing test, leading to more maintainable and reliable software architectures by focusing on observable behavior rather than internal implementation details.

Key Features

• Strict enforcement of the TDD Red phase protocol
• Verification of test failure to ensure test validity and relevance
• Specification ambiguity detection with stop-and-ask safeguards
• 1 GitHub stars
• Automated mapping of Acceptance Criteria (AC) to specific test cases
• Standardized progress reporting including Phase, Spec-ID, and Command logs

Use Cases

• Debugging complex logic by isolating the bug within a single reproducible failing test case
• Onboarding developers to strict TDD practices by providing a guided, step-by-step framework
• Starting a new feature by defining clear behavioral boundaries through failing tests