test-driven-development

Guide the RED-GREEN-REFACTOR cycle for writing tests before production code.

24|3|Updated Jan 30, 2026
One-click install
npx skills add https://github.com/VoDaiLocz/kilo-kit-mcp --skill test-driven-development-vodailocz
Or copy as Structured Prompt for Agent
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Skill: test-driven-development
Source: https://github.com/VoDaiLocz/kilo-kit-mcp/tree/main/skills/productivity/test-driven-development
Command: npx skills add https://github.com/VoDaiLocz/kilo-kit-mcp --skill test-driven-development-vodailocz

SYSTEM DOCUMENTATION & REQUIREMENTS

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

What problem does it solve?

This Skill helps developers implement Test-Driven Development (TDD) practices, which improve code quality, prevent regressions, and facilitate refactoring.

Core Features & Use Cases

  • Test-Driven Development Cycle: Guides through the RED-GREEN-REFACTOR cycle for writing tests before implementation.
  • When to Use TDD: Provides guidelines on when to apply TDD, including new features, bug fixes, refactoring, and behavior changes.
  • Anti-Patterns: Identifies common pitfalls in testing and how to avoid them.

Quick Start

Use the TDD skill to write a failing test for a new feature before implementing the code.

Frequently Asked Questions about test-driven-development

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

FAQPage Schema
How do I implement test-driven development in my coding workflow?

To implement test-driven development, follow the RED-GREEN-REFACTOR cycle by writing a failing test first, writing minimal production code to pass it, and then refactoring to maintain a clean codebase.

When should I use TDD instead of writing tests after implementation?

Use TDD when developing new features, fixing bugs, refactoring existing code, or implementing behavior changes to prevent regressions and improve overall code quality.

What are common anti-patterns in test-driven development and how can I avoid them?

Common TDD anti-patterns include writing overly complex tests or skipping the refactoring phase. Avoid these pitfalls by focusing on clear, minimal tests and maintaining a clean codebase throughout the development cycle.

Do I need to understand specific testing principles before applying TDD practices?

Yes, applying TDD practices requires a solid understanding of testing principles and code structure to effectively write tests before production code and ensure safer, repeatable coding workflows.

What is the best way to write a failing test for a new feature before coding?

The best way to write a failing test for a new feature is to define the desired behavior clearly and write a minimal test that fails initially, establishing the baseline for the RED-GREEN-REFACTOR cycle.

Why does test-driven development help prevent regressions during refactoring?

Test-driven development prevents regressions during refactoring because the minimal tests written upfront act as a safety net, verifying that existing behavior remains intact when you modify the codebase.