Test-Driven Development (TDD) Workflow

About

The TDD skill implements a rigorous Test-Driven Development methodology within Claude Code, ensuring high-quality, reliable software through the 'Iron Law': no production code without a failing test first. It guides users through the mandatory Red-Green-Refactor stages, requiring verification that tests fail for the right reasons before implementation begins. This disciplined approach eliminates the bias of 'tests-after' development, prevents over-engineering via minimal code requirements, and provides a systematic framework for both feature development and bug fixing.

Key Features

• Minimalist 'Green' implementation guidance to avoid over-engineering
• Mandatory 'Verify Red' checks to prevent false-positive tests
• Integrated bug reproduction workflow via failing test cases
• Strict enforcement of the Red-Green-Refactor cycle
• 1 GitHub stars
• Standardized verification checklists for feature completion

Use Cases

• Implementing new features with 100% verified test coverage
• Safely refactoring complex logic while maintaining green status
• Resolving production bugs by first creating a reproducible failing test