test-driven-development

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

Updated Aug 23, 2026
One-click install
npx skills add https://github.com/juliuschun/tower --skill test-driven-development-juliuschun
Or copy as Structured Prompt for Agent
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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.