How does this skill enforce TDD principles?

The skill mandates a strict Red-Green-Refactor cycle where Claude must write a failing test and verify its failure message before any production code can be authored.

Why is the 'Verify Red' step mandatory?

Watching a test fail confirms that the test is actually checking the intended behavior and isn't passing by accident, which is a common pitfall in tests-after development.

What is the 'Iron Law' in this TDD skill?

The Iron Law states that no production code should be written without a failing test first. If code is written prematurely, it must be deleted and restarted from the test phase.

Can this skill be used for bug fixing?

Absolutely. It requires writing a test that reproduces the bug (RED), verifying the failure, and then writing the minimal code to fix it (GREEN) before refactoring.

Test-Driven Development (TDD) Mastery

Name: Test-Driven Development (TDD) Mastery
Author: SwervoJake

bySwervoJake

0•

Security & Testing

Enforces a strict Red-Green-Refactor workflow to ensure high-quality, bug-free production code through a test-first approach.

This skill implements a rigorous Test-Driven Development (TDD) methodology within Claude Code, ensuring that no production code is written without a preceding failing test. By guiding Claude through the mandatory Red-Green-Refactor cycle, it eliminates technical debt, prevents regressions, and produces cleaner, more maintainable software architecture. It is designed to foster extreme discipline, requiring developers and AI alike to verify failures before implementation and refactor only when tests are green, resulting in codebases that are robust by design.

Key Features

010 GitHub stars

02Strict Red-Green-Refactor cycle enforcement

03Minimalist coding principles to prevent over-engineering and YAGNI violations

04Detection and prevention of common testing anti-patterns

05Mandatory 'Verify Red' phase to prevent false positives

06Automated verification checklists for feature completion

Use Cases

01Reproducing and fixing complex bugs by establishing failing test cases first

02Safely refactoring legacy code while maintaining functional integrity

03Implementing new features with guaranteed 100% functional test coverage

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add swervojake/claaaude-studio test-driven-development

For use in Claude.ai and ChatGPT

Key Features

010 GitHub stars

02Strict Red-Green-Refactor cycle enforcement

03Minimalist coding principles to prevent over-engineering and YAGNI violations

04Detection and prevention of common testing anti-patterns

05Mandatory 'Verify Red' phase to prevent false positives

06Automated verification checklists for feature completion

Use Cases

01Reproducing and fixing complex bugs by establishing failing test cases first

02Safely refactoring legacy code while maintaining functional integrity

03Implementing new features with guaranteed 100% functional test coverage

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add swervojake/claaaude-studio test-driven-development

For use in Claude.ai and ChatGPT