Can I use this skill for bug fixes?

Yes. When a bug is found, this skill requires writing a failing test that reproduces the bug before implementing the fix to ensure the issue is truly resolved.

Why must I delete code written before a test?

Writing code before a test violates TDD principles. Deleting it and starting over ensures the test is actually verifying the behavior rather than just passing because the code already exists.

What is the core principle of the TDD skill?

The core principle is the Red-Green-Refactor cycle: write a failing test first, write minimal code to make it pass, and then refactor for cleanliness.

When should I skip TDD according to this skill?

Exceptions are rare and should be discussed with a human partner, but typical examples include throwaway prototypes, generated code, or simple configuration files.

Test-Driven Development (TDD)

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

byzerdos

0•

安全与测试

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

The Test-Driven Development (TDD) skill integrates a rigorous engineering discipline into Claude's coding process, mandating that tests are written and verified as failing before any implementation code is authored. By following the 'Iron Law'—no production code without a failing test first—this skill guides the AI through the Red-Green-Refactor cycle to ensure minimal code production, prevent over-engineering, and maintain high test coverage. It helps developers eliminate technical debt and build more reliable software by shifting the focus from 'what does this code do' to 'what should this code do.'

主要功能

01Strict Red-Green-Refactor workflow enforcement

02Minimal code implementation guidance to pass specific tests

03Mandatory verification of failing tests to prevent false positives

04Automated regression checking during the Refactor phase

050 GitHub stars

06Pre-defined checklists for verifying TDD compliance

使用场景

01Safe refactoring of complex logic with a continuous safety net of green tests

02Implementing new features with guaranteed test coverage and clear API design

03Reproducing and fixing bugs by writing a failing test case first

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add zerdos/superpowers test-driven-development

For use in Claude.ai and ChatGPT

Download Skill