TDD

Apply the Test-Driven Development Red-Green-Refactor cycle to software development.

4|Updated Feb 26, 2026
One-click install
npx skills add https://github.com/Heldinhow/awesome-opencode-dev-skills --skill tdd-heldinhow
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: TDD
Source: https://github.com/Heldinhow/awesome-opencode-dev-skills/tree/main/TDD
Command: npx skills add https://github.com/Heldinhow/awesome-opencode-dev-skills --skill tdd-heldinhow

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill addresses the challenge of building software that is reliable, maintainable, and well-tested by enforcing a disciplined development approach.

Core Features & Use Cases

  • Systematic Development: Ensures code is built with a clear understanding of requirements from the outset.
  • Reduced Bugs: Catches errors early in the development cycle through a robust test suite.
  • Refactor Safety Net: Provides confidence to refactor code without introducing regressions.
  • Use Case: When starting a new feature, use this skill to guide the process of writing tests before implementation, ensuring each piece of functionality is validated.

Quick Start

Follow the Red-Green-Refactor cycle to develop new code.

Frequently Asked Questions about TDD

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

FAQPage Schema
What is the Red-Green-Refactor cycle in test-driven development?

The Red-Green-Refactor cycle in test-driven development is a systematic process where you write a failing test, implement code to make it pass, and then refactor safely. This ensures high code coverage and reliable software.

How do I write tests before implementation to reduce bugs?

Writing tests before implementation involves defining clear requirements upfront through the test-driven development cycle. This approach catches errors early and establishes a robust test suite to reduce bugs in your software.

When should I use test-driven development for building software?

You should use test-driven development when starting a new feature to ensure each piece of functionality is validated. It is ideal for building reliable, maintainable code and provides a safety net for refactoring without regressions.

How does test-driven development help with code refactoring?

Test-driven development helps with code refactoring by providing a robust test suite that acts as a safety net. This ensures you can confidently refactor code without introducing regressions or breaking existing functionality.