Test-Driven Development Workflow

This skill ensures all code development follows TDD principles with comprehensive test coverage.

Agent counterpart: Use the tdd-guide agent for interactive, step-by-step TDD guidance during feature development. This skill provides the reference patterns and examples; the agent enforces the workflow.

When to Activate

• Writing new features or functionality
• Fixing bugs or issues
• Refactoring existing code
• Adding API endpoints
• Creating new components
• Setting up coverage thresholds in CI to enforce the 80%+ minimum
• Reviewing a PR where tests were written after the implementation (anti-pattern)
• Onboarding a developer who is unfamiliar with the Red-Green-Refactor cycle

Core Principles