When can TDD be skipped?

TDD can only be skipped for throwaway prototypes, generated code, or configuration files, and typically requires explicit permission from the human partner.

What is the Iron Law of TDD in this skill?

The Iron Law dictates that no production code can be written without a failing test first. If code is written before the test, it must be deleted and restarted to ensure the test truly verifies the behavior.

Why does the skill require watching a test fail?

Watching a test fail (Verify RED) confirms that the test is actually testing the intended behavior and isn't passing by accident or due to a configuration error.

How does this skill handle existing bugs?

When a bug is found, the skill requires writing a failing test that reproduces the issue before any fix is applied, proving the fix works and preventing future regressions.

Test-Driven Development (TDD)

Name: Test-Driven Development (TDD)
Author: yang0

byyang0

0•

보안 및 테스팅

Enforces a rigorous Red-Green-Refactor workflow to ensure all production code is verified by failing tests first.

This skill implements a strict Test-Driven Development (TDD) framework for Claude, prioritizing code integrity and reliability. By mandating the 'Iron Law'—no production code without a failing test—it guides the AI through the systematic process of writing a test, watching it fail, implementing minimal code to pass, and refactoring for quality. This approach eliminates technical debt, prevents regressions, and ensures that every feature or bug fix is backed by an automated verification suite.

주요 기능

01Automated bug reproduction workflows

02Strict 'Delete-on-Violation' policy for non-TDD code

03Red-Green-Refactor cycle enforcement

040 GitHub stars

05Minimalist code implementation guidance (Verify GREEN)

06Mandatory test failure verification (Verify RED)

사용 사례

01Implementing new features with documented behavioral requirements

02Safe refactoring of complex logic with a continuous test safety net

03Reproducing and fixing bugs by establishing a failing baseline

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add yang0/superpower test-driven-development

For use in Claude.ai and ChatGPT

주요 기능

01Automated bug reproduction workflows

02Strict 'Delete-on-Violation' policy for non-TDD code

03Red-Green-Refactor cycle enforcement

040 GitHub stars

05Minimalist code implementation guidance (Verify GREEN)

06Mandatory test failure verification (Verify RED)

사용 사례

01Implementing new features with documented behavioral requirements

02Safe refactoring of complex logic with a continuous test safety net

03Reproducing and fixing bugs by establishing a failing baseline

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add yang0/superpower test-driven-development

For use in Claude.ai and ChatGPT