test-driven-development

Apply test-first development with the red-green-refactor cycle.

Updated Jun 12, 2026

Search Tags:#TDD #software quality #code refactoring #test-driven-development #testing practices

Ready to run

npx skills add https://github.com/flowel/AiSkills --skill test-driven-development-flowel

💬 Prompt for ChatGPT / Claude Chat▼

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

SYSTEM DOCUMENTATION & REQUIREMENTS

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

What problem does it solve?

This Skill introduces test-driven development (TDD) principles to streamline the software development process, reducing errors and improving code quality.

Core Features & Use Cases

Test-First Development: Encourages writing tests before writing production code to ensure correct functionality.
Red-Green-Refactor Cycle: A structured approach to developing code by writing a failing test (RED), writing minimal code to pass the test (GREEN), and refactoring (REFACTOR).
Test Quality Metrics: Offers guidelines on writing clear, minimal, and meaningful tests.
Anti-Patterns: Provides a list of common pitfalls to avoid when writing tests.

Quick Start

Activate the TDD skill to learn and implement TDD in your projects.

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 the red-green-refactor cycle work?▼

Test-driven development is a test-first practice where you write a failing test (RED), implement minimal code to pass it (GREEN), and then refactor. This cycle ensures correct functionality and produces high-quality, robust code.

How do I start writing tests before production code for new feature development?▼

To start test-driven development, activate the framework to learn test-first principles. You write a failing test defining the desired feature behavior, then write minimal production code to pass it.

Do I need to understand test automation tools to use test-driven development practices?▼

Yes, understanding TDD principles and test automation tools is required. The framework provides guidelines for writing clear, minimal tests, but you must know how to execute and automate them.

What are common anti-patterns to avoid when writing tests for software quality?▼

Common test-driven development anti-patterns include writing overly complex or meaningless tests. The framework provides a specific list of common pitfalls to avoid, ensuring tests remain clear, minimal, and maintainable.

Can test-first development be applied to bug fixes and code refactoring tasks?▼

Yes, test-first development applies to new feature development, bug fixes, and refactoring tasks. You write tests defining the expected correct behavior before altering the code to ensure robust functionality.