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test-driven-development

Guide a RED-GREEN-REFACTOR workflow for writing tests before production code.

Updated Feb 5, 2026
Search Tags:#tdd#red-green-refactor#quality-assurance#test-driven-development#bug-fix#software-testing
One-click install
npx skills add https://github.com/tyk-lab/my-ai-skill --skill test-driven-development-tyk-lab
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: test-driven-development
Source: https://github.com/tyk-lab/my-ai-skill/tree/main/skills/test-driven-development
Command: npx skills add https://github.com/tyk-lab/my-ai-skill --skill test-driven-development-tyk-lab

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Writing production-ready software often suffers from gaps between requirements and implementation; test-driven development motivates writing tests before coding to guard against regressions and unclear behavior.

Core Features & Use Cases

  • Ensures you write a failing test first to define expected behavior.
  • Guides a RED-GREEN-REFACTOR workflow to produce minimal, verified code.
  • Applicable to new features, bug fixes, and refactoring tasks across teams.

Quick Start

Write a failing test that codifies the desired behavior, then implement the minimal production code to pass.

Frequently Asked Questions about test-driven-development

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

FAQPage Schema
What is test-driven development and how does it work?▼

Test-driven development is a software engineering practice where you write a failing test first to define expected behavior, then implement minimal production code to pass the test, and finally refactor to improve code quality.

How do I apply test-driven development to bug fixes and refactoring tasks?▼

To apply test-driven development to bug fixes and refactoring, write a failing test that reproduces the bug or verifies the refactored behavior. Then, write minimal production code to satisfy the test before refactoring for quality.

Can I use test-first development for any software project or feature work?▼

Test-first development is applicable to new features, bug fixes, and refactoring tasks across software projects. It ensures you define expected behavior upfront by constructing a failing test before any production code.

What is the best way to start writing tests before production code?▼

The best way to start writing tests before production code is to codify the desired behavior by writing a failing test first. Then, implement the minimal production code required to make that test pass.

Why should I write a failing test before writing production code?▼

You should write a failing test first to close gaps between requirements and implementation. Test-driven development motivates writing tests before coding to guard against regressions and ensure clear software behavior.

When should I not use the red-green-refactor workflow?▼

The red-green-refactor workflow is suited for feature work, bug fixes, and refactoring tasks. It may not be necessary for trivial changes or exploratory code where defining expected behavior upfront through tests offers limited value.

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