test-driven-development

Guide software development through the Red-Green-Refactor TDD cycle.

Updated Aug 23, 2026

Search Tags:#code quality #testing #tdd #debugging #refactoring #software development

Ready to run

npx skills add https://github.com/juliuschun/tower --skill test-driven-development-juliuschun

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: test-driven-development
Source: https://github.com/juliuschun/tower/tree/main/claude-skills/skills/test-driven-development
Command: npx skills add https://github.com/juliuschun/tower --skill test-driven-development-juliuschun

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill helps developers write higher-quality code by enforcing the Test-Driven Development (TDD) methodology, reducing bugs and improving maintainability.

Core Features & Use Cases

TDD Workflow Guidance: Provides a structured approach to writing tests before implementation (Red-Green-Refactor).
Best Practices: Details on writing good tests, handling bug fixes, and common testing anti-patterns.
Use Case: When starting a new feature, use this Skill to guide you through writing a failing test, implementing the minimal code to pass, and then refactoring.

Quick Start

Follow the Red-Green-Refactor cycle to implement the new feature.

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 tests before code using the TDD methodology?▼

Test-driven development (TDD) begins with the Red-Green-Refactor cycle: write a failing test, implement the minimal code to pass, and then refactor. This structured workflow reduces bugs and improves maintainability.

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

The Red-Green-Refactor cycle is the core TDD workflow. You write a failing test (Red), implement minimal code to pass the test (Green), and then clean up the code without changing behavior (Refactor).

Can I use test-driven development for fixing bugs and refactoring existing code?▼

Yes, test-driven development is applicable to bug fixing and refactoring. It ensures code quality and prevents regressions by establishing tests before altering the implementation.

What are common testing anti-patterns to avoid during refactoring?▼

Common testing anti-patterns emerge when deviating from the TDD workflow. Following the structured Red-Green-Refactor cycle helps avoid these pitfalls by ensuring tests remain reliable and maintainable.

Why should I write tests before implementation to improve code quality?▼

Writing tests before implementation enforces TDD methodology, which reduces bugs and improves maintainability. It ensures your code is continuously validated against expected behaviors from the start.