test-driven-development

Automates iterative test-first development workflow for software teams.

Updated Mar 7, 2026

Search Tags:#workflow #tdd #debugging #red-green-refactor #quality-assurance #software-engineering #testing-first

Ready to run

npx skills add https://github.com/randoneering/nix-flake-mirror --skill test-driven-development-randoneering

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: test-driven-development
Source: https://github.com/randoneering/nix-flake-mirror/tree/main/home/programs/opencode/skills/test-driven-development
Command: npx skills add https://github.com/randoneering/nix-flake-mirror --skill test-driven-development-randoneering

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This approach ensures that software behavior is validated by tests before implementation, reducing regressions and clarifying requirements.

Core Features & Use Cases

Red-Green-Refactor cycle with minimal, focused tests.
Test-first discipline for new features, bug fixes, and refactors.
Behavioral documentation through tests that guide design and usage.

Quick Start

Write a failing test that captures the desired behavior, then implement the minimal code to pass and refactor.

Frequently Asked Questions about test-driven-development

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

FAQPage Schema

How do I apply test-driven development to guide feature implementation?▼

Test-driven development guides feature implementation by writing a failing test that captures the desired behavior, then writing the minimal code to pass it and refactoring. This enforces the Red-Green-Refactor cycle to validate behavior before implementation.

What is the Red-Green-Refactor cycle in software engineering?▼

The Red-Green-Refactor cycle is a test-driven development process where you write a failing test, implement minimal code to pass it, and then refactor. It ensures tests fail first and guide design with clear failure signals.

Can I use test-first discipline for bug fixes and refactoring existing code?▼

Yes, test-first discipline works across new features, bug fixes, and refactors. It ensures tests fail first and guide design, validating software behavior and clarifying requirements before you change the implementation.

Why does writing tests before implementation reduce software regressions?▼

Writing tests before implementation reduces regressions by validating software behavior prior to coding, which clarifies requirements and enforces minimal, verifiable code through a strict Red-Green-Refactor cycle.

What's the best way to start a test-driven development workflow?▼

The best way to start a test-driven development workflow is to write a failing test that captures the desired behavior, then implement the minimal code to pass it and refactor, ensuring tests guide design and usage.