test-driven-development

Enforce failing tests before implementing production code via Red-Green-Refactor.

Updated Jan 28, 2026

Search Tags:#code quality #software engineering #TDD #unit testing #test-driven development #red-green-refactor

Ready to run

npx skills add https://github.com/kckylechen1/ai-agent-toolkit --skill test-driven-development-kckylechen1

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: test-driven-development
Source: https://github.com/kckylechen1/ai-agent-toolkit/tree/main/skills/test-driven-development
Command: npx skills add https://github.com/kckylechen1/ai-agent-toolkit --skill test-driven-development-kckylechen1

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill helps teams adopt a disciplined test-first workflow by ensuring that production code is driven by failing tests first, reducing regressions and improving design.

Core Features & Use Cases

Enforces a Red-Green-Refactor cycle: write a failing test, verify it fails, implement minimal production code, and refactor.
Supports feature development, bug fixes, and refactoring with deterministic tests.
Promotes reliable, maintainable code and better design through early testing.

Quick Start

Provide a minimal command or prompt to begin TDD practice: "Run your project's test suite, write a failing test for the next feature, then implement the minimal code to pass and refactor."

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 enforces a red-green-refactor cycle: write a failing test, verify it fails, implement minimal code to pass, then refactor. This test-first workflow reduces regressions and improves software design.

How do I start practicing test-driven development for a new feature?▼

To start test-driven development, run your project's test suite, write a failing test for the next feature, implement minimal production code to pass the test, and then refactor the codebase.

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

Yes, test-driven development applies to bug fixes and refactoring scenarios. You write deterministic failing tests that capture the bug or desired behavior before implementing the minimal production code to pass.

Why should my team adopt a test-first development workflow?▼

Adopting a test-first workflow helps teams ensure production code is driven by failing tests first. This disciplined approach to test-driven development reduces regressions and promotes reliable, maintainable code.

Does test-driven development require specific unit testing frameworks to work?▼

No specific unit testing framework is required. Test-driven development is a workflow methodology that enforces writing failing tests before production code, relying on your project's existing test suite to verify failures and passes.