test-driven-development

Implement the Test-Driven Development cycle with failing tests before production code.

Updated Jun 5, 2026
One-click install
npx skills add https://github.com/yeisme/pinax --skill test-driven-development-yeisme
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: test-driven-development
Source: https://github.com/yeisme/pinax/tree/main/.agents/skills/test-driven-development
Command: npx skills add https://github.com/yeisme/pinax --skill test-driven-development-yeisme

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill provides guidance on implementing the Test-Driven Development (TDD) cycle, ensuring high code quality and reducing the risk of bugs.

Core Features & Use Cases

  • Test-First Approach: Write tests before writing implementation code to verify functionality.
  • Red-Green-Refactor: Follow the TDD cycle of writing a failing test, writing minimal code to pass it, and then refactoring the code.
  • Best Practices: Offers insights on when to use TDD, common mistakes to avoid, and the importance of tests for documentation and refactoring.

Quick Start

Implement a new feature by writing a test first, ensuring it fails, then writing code to make it pass.

Frequently Asked Questions about test-driven-development

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

FAQPage Schema
How do I start writing code using the test-driven development cycle?

Test-driven development starts by writing a failing test that defines the desired functionality, then writing minimal code to pass that test, and finally refactoring the code to improve maintainability.

Why does test-driven development help reduce bugs and improve code quality?

Test-driven development reduces bugs by ensuring every production code change is preceded by a failing test, verifying functionality before implementation and serving as documentation for future refactoring.

What is the red-green-refactor cycle in software development?

The red-green-refactor cycle is the core test-driven development process of writing a failing test, writing minimal code to make it pass, and then refactoring the implementation without breaking functionality.

When should I not use test-driven development for my software project?

Test-driven development may not suit exploratory programming or spike testing where immediate output matters more than passing tests, though it remains highly recommended for reducing bugs and improving maintainability.

Do I need prior experience with testing frameworks to implement TDD?

Yes, implementing test-driven development requires understanding TDD principles and practice, including familiarity with writing tests before code and following the red-green-refactor cycle.

What's the best way to refactor code without breaking existing tests?

The best way to refactor safely is following the test-driven development cycle: ensure all tests pass before refactoring, then modify the code while continuously running tests to verify functionality remains intact.