How does this skill integrate with other Claude Code plugins?

It specifically integrates with the workflow plugin's Stage B, using previously generated test cases as the foundation for the TDD cycle.

Does the skill automatically run my tests?

The skill monitors the development process and requires proof of a failing test before allowing the user to proceed to the implementation phase.

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

The Iron Law dictates that you must never write production code without a failing test first. The skill enforces this by blocking implementation until a 'Red' state is confirmed.

Can I refactor my code while trying to make a test pass?

No. The skill follows strict TDD discipline where refactoring is only allowed during the 'Refactor' phase, which occurs after the test has reached a 'Green' (passing) state.

Test-Driven Development (TDD)

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

byTomazWang

0•

Security & Testing

Enforces a strict Red-Green-Refactor cycle to ensure code reliability and quality through test-first implementation.

The Test-Driven Development (TDD) skill for Claude Code automates the discipline of writing tests before implementation. By enforcing the 'Iron Law of TDD,' it prevents developers from jumping straight into production code, requiring a failing test as a prerequisite for any new logic. The skill guides users through the iterative Red-Green-Refactor process, blocking premature refactoring or future-proofing until tests pass, and ensuring that every code change is backed by verified requirements and clear architectural intent.

Key Features

01Blocks production code implementation until a valid failing test exists.

020 GitHub stars

03Provides immediate feedback and guardrails for TDD non-compliance.

04Prevents premature refactoring until the 'Green' phase is successfully reached.

05Enforces the strict Red-Green-Refactor workflow automatically.

06Integrates with workflow plugins to use pre-generated test cases as implementation targets.

Use Cases

01Training and enforcing testing discipline within automated development workflows.

02Developing high-stakes features where regression prevention is critical.

03Translating technical specifications into verified code through iterative cycles.

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add tomazwang/agent-toolkit test-driven-development

For use in Claude.ai and ChatGPT

Download Skill