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test-driven-development

Apply a test-first Red-Green-Refactor cycle to software features.

Updated Feb 19, 2026
Search Tags:#workflow#testing#tdd#practice#quality#red-green-refactor#software-development
One-click install
npx skills add https://github.com/benjgrad/workout-ai --skill test-driven-development-benjgrad
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: test-driven-development
Source: https://github.com/benjgrad/workout-ai/tree/main/.claude/skills/test-driven-development
Command: npx skills add https://github.com/benjgrad/workout-ai --skill test-driven-development-benjgrad

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Writing features and fixes without failing tests often leads to regressions and unclear requirements. This skill enforces a test-first mindset so you prove behavior before coding.

Core Features & Use Cases

  • Enforces a Red-Green-Refactor cycle to guide design and refactoring.
  • Reduces regression risk by validating expectations with automated tests before implementation.
  • Applies to new features, bug fixes, and codebase refactors to maintain behavior guarantees.

Quick Start

Start by writing a failing test, then implement the minimal code to pass, and finally refactor for clarity.

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 improve software quality?▼

Test-driven development is a practice of writing failing tests before production code to drive design and reduce regression risk. It enforces a red-green-refactor cycle, proving behavior through automated tests before implementation.

How do I apply the red-green-refactor cycle when writing new features?▼

To apply the red-green-refactor cycle, start by writing a failing test that defines desired behavior. Then, implement minimal production code to pass the test, and finally refactor the code for clarity while maintaining the passing test.

Can I use test-driven development for bug fixes and refactoring existing code?▼

Yes, test-driven development applies to bug fixes and codebase refactors. You write a failing test reproducing the bug or validating expected behavior, then implement minimal code to pass it, maintaining behavior guarantees across the codebase.

Why does writing tests before code reduce regressions?▼

Writing tests before code reduces regressions by validating expectations with automated tests prior to implementation. This test-first workflow ensures requirements are explicit and behavior is proven, preventing unclear requirements from introducing defects.

Do I need specific testing frameworks to practice test-driven development?▼

No specific testing frameworks are required to practice test-driven development. The workflow applies across any codebase by enforcing a failing test-first approach, minimal production code implementation, and a disciplined verification cycle regardless of tools.

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