test-driven-development

Guide teams to write failing tests before production code using red-green-refactor cycles.

Updated Feb 8, 2026

Search Tags:#workflow #testing #tdd #quality #red-green-refactor #software-engineering #test-driven-development

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npx skills add https://github.com/alexisg24/claude-agrents-env-tests --skill test-driven-development-alexisg24

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: test-driven-development
Source: https://github.com/alexisg24/claude-agrents-env-tests/tree/main/environments/nextjs-nestjs-pg-redis-agents/.agents/skills/test-driven-development
Command: npx skills add https://github.com/alexisg24/claude-agrents-env-tests --skill test-driven-development-alexisg24

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This skill helps teams reduce defects and regressions by requiring tests to fail before any production code is written.

Core Features & Use Cases

Enforces the Red-Green-Refactor cycle guiding incremental development.
Improves code quality by making behavior explicit through tests.
Reduces regressions during refactors by validating with focused tests.

Quick Start

Run a failing test first, then implement the minimal code to pass it.

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 it reduce software defects?▼

Test-driven development is a disciplined workflow requiring tests to fail before any production code is written. This approach reduces defects and regressions by making behavior explicit and validating code through focused tests before implementation.

How do I start writing failing tests before implementing production code?▼

To start writing failing tests, run a failing test first, then implement the minimal code required to pass it. This enforces the red-green-refactor cycle to guide incremental development and ensure disciplined software engineering.

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

Yes, test-driven development is applicable across feature work, bug fixes, refactors, and behavioral changes. It reduces regressions during refactors by validating changes with focused tests before altering production code.

What is the red-green-refactor cycle in test-driven development?▼

The red-green-refactor cycle is a disciplined workflow enforcing incremental development. You write a failing test, implement minimal code to pass it, and then refactor. This ensures clear test names and focused validation of behavior.

When should I not use test-driven development for my software project?▼

Test-driven development is designed for typical software projects requiring disciplined workflows. It enforces minimal tests and clear test names, but may not suit projects where establishing a testing framework is infeasible or exploratory prototyping is the primary goal.