tdd

Enforce the RED-GREEN-REFACTOR cycle for writing production code.

22|3|Updated Jan 10, 2026
One-click install
npx skills add https://github.com/fusengine/agents --skill tdd-fusengine
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: tdd
Source: https://github.com/fusengine/agents/tree/main/plugins/ai-pilot/skills/tdd
Command: npx skills add https://github.com/fusengine/agents --skill tdd-fusengine

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill enforces the Test-Driven Development (TDD) methodology, ensuring that all production code is written only after a failing test has been created, thereby guaranteeing robust and well-tested software.

Core Features & Use Cases

  • Enforces RED-GREEN-REFACTOR: Guides users through the strict TDD cycle.
  • Prevents Untested Code: Mandates tests before implementation to catch bugs early.
  • Use Case: When developing a new user authentication feature, use this Skill to write tests for login, logout, and password reset scenarios before writing any of the actual authentication code.

Quick Start

Use the tdd skill to write a failing test for the new user registration functionality.

Frequently Asked Questions about tdd

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I start writing code using the red-green-refactor cycle?

The red-green-refactor cycle begins by writing a failing test for your new functionality, implementing the minimum code to pass that test, and then refactoring the production code to improve quality.

Why write tests before implementation instead of testing after coding?

Writing tests before implementation prevents untested code and catches bugs early. Test-after approaches risk incomplete coverage and manual testing errors, whereas test-first development ensures robust, well-tested software.

Can I use test-driven development for any software development stack?

Yes, test-driven development supports various development stacks by providing guidance on test execution and common anti-patterns, making it adaptable to your specific software development environment.

What are common TDD anti-patterns I should avoid during refactoring?

Common TDD anti-patterns arise when deviating from the strict red-green-refactor cycle. This Skill provides guidance on avoiding these pitfalls to ensure your refactoring maintains high code quality.

When do I need test-driven development for a new feature?

You need test-driven development when writing new production code, such as a user authentication feature. It enforces writing tests for login and password reset scenarios before any actual implementation.