How does the skill handle bug fixes?

It requires writing a failing test that reproduces the bug before applying any fixes, ensuring the solution is verified and preventing future regressions.

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

The Iron Law mandates that no production code should be written without a failing test first; any code written beforehand should be deleted and restarted to ensure validity.

Why does this skill require watching a test fail?

Verifying a failure (RED) ensures the test actually targets the intended behavior and isn't passing by accident or due to unrelated existing code.

Can I skip TDD for simple prototypes?

While exceptions exist for throwaway prototypes, the skill strongly discourages 'skipping just this once' to prevent technical debt and unverified logic.

Test-Driven Development (TDD)

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

bycipherstash

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安全与测试

Enforces a strict Red-Green-Refactor workflow to ensure all code is verified by failing tests before implementation.

This skill provides a rigorous framework for Test-Driven Development (TDD) within Claude, centered on the 'Iron Law' that no production code should exist without a preceding failing test. It guides users through the mandatory cycle of writing a minimal failing test, verifying the failure, implementing the simplest code to pass, and refactoring for cleanliness. By eliminating common rationalizations for skipping tests, this skill helps developers build high-confidence features, reproducible bug fixes, and maintainable architectures while ensuring that every line of code serves a verified purpose.

主要功能

014 GitHub stars

02Guidance on writing minimal code to pass (YAGNI principle)

03Strict Red-Green-Refactor cycle enforcement

04Identification of TDD 'Red Flags' and anti-patterns

05Mandatory test failure verification before implementation

06Comprehensive verification checklist for TDD compliance

使用场景

01Refactoring legacy code while maintaining functional integrity

02Developing new features with systematic behavior verification

03Reproducing and resolving bugs using failing test cases

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add cipherstash/cipherpowers test-driven-development

For use in Claude.ai and ChatGPT

Download Skill