test-driven-development

Guide developers through the Red-Green-Refactor cycle for TDD.

2|Updated Jan 20, 2026

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

Ready to run

npx skills add https://github.com/DavidSchmidt00/padel-agent --skill test-driven-development-davidschmidt00

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: test-driven-development
Source: https://github.com/DavidSchmidt00/padel-agent/tree/main/.agents/skills/test-driven-development
Command: npx skills add https://github.com/DavidSchmidt00/padel-agent --skill test-driven-development-davidschmidt00

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill enforces a rigorous Test-Driven Development (TDD) methodology to ensure code quality, prevent regressions, and build robust software by requiring tests to be written before implementation code.

Core Features & Use Cases

Enforces TDD Principles: Guides users through the Red-Green-Refactor cycle.
Prevents Regressions: Ensures new code is tested and existing functionality remains intact.
Improves Code Design: Encourages writing testable and maintainable code.
Use Case: When starting a new feature, use this Skill to write a failing test first, then write the minimal code to pass, and finally refactor.

Quick Start

Follow the Red-Green-Refactor cycle for all new features and bug fixes.

Frequently Asked Questions about test-driven-development

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

FAQPage Schema

How does test-driven development prevent software regressions?▼

Test-driven development prevents regressions by mandating failing tests before writing production code, ensuring existing functionality remains intact while verifying new behavior.

What is the Red-Green-Refactor cycle in TDD?▼

The Red-Green-Refactor cycle in TDD involves writing a failing test first, writing minimal production code to pass that test, and then refactoring the code to improve design and maintainability.

How do I start writing tests before implementation code for a new feature?▼

To start test-driven development for a new feature, write a failing test defining the desired behavior, implement the minimal code to pass the test, and then refactor the software.

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

Yes, test-driven development applies to bug fixes and refactoring by requiring a failing test that reproduces the bug or verifies behavior before altering the production code.

Why does writing tests first improve code design?▼

Writing tests first improves code design by enforcing strict testing protocols that encourage developers to write modular, testable, and maintainable software structures from the start.

What are the limitations of strict test-driven development?▼

Strict test-driven development requires adherence to rigorous testing protocols and may slow initial feature delivery, requiring strict discipline to write failing tests before any production code.