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test-driven-development

Enforce failing tests before production code using the Red-Green-Refactor cycle.

Updated Feb 11, 2026

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

Ready to run

npx skills add https://github.com/knguyen0125/claude-plugin --skill test-driven-development-knguyen0125

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: test-driven-development
Source: https://github.com/knguyen0125/claude-plugin/tree/main/plugins/engineering/skills/test-driven-development
Command: npx skills add https://github.com/knguyen0125/claude-plugin --skill test-driven-development-knguyen0125

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

Test-Driven Development (TDD) provides a structured discipline that reduces regressions by requiring tests before writing production code, guiding teams toward reliable, maintainable software.

Core Features & Use Cases

Red-Green-Refactor cycle as a repeatable workflow to ensure every feature starts with a failing test.
Clear guidance on when to apply TDD (features, bug fixes, refactors) and how to avoid common pitfalls.
Use Case: teams adopt TDD to catch design flaws early and maintain high test coverage across codebases.

Quick Start

Write a failing test for the feature you plan to implement, then write the minimal code to make it pass.

Frequently Asked Questions about test-driven-development

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

FAQPage Schema

What is the test-driven development Red-Green-Refactor cycle?▼

Test-driven development uses the Red-Green-Refactor cycle to enforce a test-first workflow, requiring a failing test before writing production code, then minimal code to pass it, followed by refactoring.

How do I start writing tests before production code?▼

To start test-first development, write a failing test for the feature you plan to implement, then write the minimal code required to make that test pass before refactoring.

When should I apply test-driven development in software engineering?▼

Apply test-driven development during feature development, bug fixes, and refactoring across software projects where reliable regression prevention and maintainable code matter.

Do I need a testing framework to practice test-driven development?▼

Yes, practicing test-driven development requires a testing framework, an assertion library, and a minimal codebase to execute the Red-Green-Refactor cycle effectively.

Does test-driven development help prevent code regressions?▼

Test-driven development reduces regressions by enforcing a test-first discipline that catches design flaws early and maintains high test coverage across codebases.

What are common pitfalls when adopting a test-first workflow?▼

The guidance covers common pitfalls to avoid when adopting test-driven development, helping teams reliably apply the Red-Green-Refactor cycle without missteps.