tdd

Enforce a test-first workflow with Red-Green-Refactor cycles.

1|Updated Jan 25, 2026
One-click install
npx skills add https://github.com/Zxela/claude-create --skill tdd-zxela
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: tdd
Source: https://github.com/Zxela/claude-create/tree/main/skills/test-driven-development
Command: npx skills add https://github.com/Zxela/claude-create --skill tdd-zxela

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Teams often ship features without sufficient automated tests, leading to regressions and uncertain behavior.

Core Features & Use Cases

  • Guides the Red-Green-Refactor cycle for feature development, bug fixes, and refactors.
  • Encourages writing failing tests first, validating behavior, and iterating until all tests pass.
  • Improves code confidence by maintaining a focused, test-first workflow across tasks.

Quick Start

  • Write a failing test for the desired behavior and run the test to observe the failure.
  • Implement the minimal production code to make the test pass, then run tests again.
  • Refactor for clarity and maintainability while keeping tests green.

Frequently Asked Questions about tdd

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

FAQPage Schema
How do I start test-driven development for new software features?

Test-driven development starts by writing a failing test for the desired behavior, implementing minimal production code to pass the test, then refactoring for clarity while keeping tests green.

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

The Red-Green-Refactor cycle is a test-driven development practice where you write a failing test, implement code to make it pass, and then refactor the code while maintaining green tests.

Do I need external testing tools to enforce test-first workflows?

No external testing tools are required for test-first workflows; the practice relies on your existing project testing frameworks to validate behavior and iterate until tests pass.

How do I apply test-driven development when fixing bugs?

Test-driven development for bug fixes involves writing a failing test that reproduces the specific bug, then updating the production code until the test passes and validates the correct behavior.

When should I use test-first practices in software engineering?

Use test-first practices during feature development, bug fixes, and refactoring to solve the problem of unvalidated code, preventing regressions and ensuring uncertain behavior is validated.

What's the best way to refactor code without introducing regressions?

The best way to refactor without regressions is maintaining a test-first workflow, keeping tests green throughout the process to improve code confidence and validate behavior continuously.