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

The Iron Law states that no production code should be written without a failing test existing first to prove the need for the code and provide evidence of its correctness.

How does it handle cases where I don't know what to test?

The skill includes a 'When Stuck' guide that helps you identify the simplest possible test case or break down complex behaviors into smaller, testable units.

What triggers the TDD skill in Claude Code?

The skill is triggered by phrases like 'tdd', 'test first', 'test driven', or 'red green refactor', and it is automatically active when OMC_TDD_MODE is enabled.

Can I use this skill for fixing bugs?

Absolutely. The TDD methodology requires writing a test that reproduces the bug before implementing the fix, which ensures the bug is actually solved and prevents future regressions.

How does the Red-Green-Refactor cycle work in this skill?

First, you write a failing test (Red). Second, you write the minimum code necessary to make that test pass (Green). Finally, you clean up the code without changing its behavior (Refactor).

Test Driven Development (TDD)

Name: Test Driven Development (TDD)
Author: TechDufus

byTechDufus

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セキュリティとテスト

Enforces a systematic Red-Green-Refactor methodology to ensure all production code is justified by a failing test.

The TDD skill for oh-my-claude implements a strict 'test-first' discipline that prevents the creation of production code without an accompanying failing test. It guides users through the Red-Green-Refactor cycle, providing specific verification gates at each stage to ensure code quality and maintainability. By integrating with the tdd_enforcer hook, it effectively blocks premature implementation, making it an essential tool for developers who want to eliminate technical debt and ensure 100% functional coverage during feature development or bug fixing.

主な機能

01Integrates with the tdd_enforcer hook to gate file edits

02Provides an anti-rationalization table to counter common testing excuses

03Offers structured troubleshooting for complex test setups and design smells

04Supports bug reproduction workflows by requiring a failing test before the fix

05Enforces the strict Red-Green-Refactor development cycle

0685 GitHub stars

ユースケース

01Reproducing and fixing bugs by creating a failing test case first

02Refactoring legacy codebases with safety nets to prevent regressions

03Implementing new features with guaranteed test coverage from day one

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add techdufus/oh-my-claude tdd

For use in Claude.ai and ChatGPT

Download Skill