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test-driven-development

Guide teams through Red-Green-Refactor to write tests before implementing features.

4|1|Updated Apr 11, 2026
Search Tags:#workflow#testing#tdd#quality#red-green-refactor#code-quality#test-driven-development
One-click install
npx skills add https://github.com/shichengwuyu/PaiJiPlus --skill test-driven-development-shichengwuyu
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: test-driven-development
Source: https://github.com/shichengwuyu/PaiJiPlus/tree/main/.trae/skills/test-driven-development
Command: npx skills add https://github.com/shichengwuyu/PaiJiPlus --skill test-driven-development-shichengwuyu

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Writing code without tests risks undetected regressions; TDD ensures features are implemented to satisfy explicit tests, guiding design and preventing gaps.

Core Features & Use Cases

  • Red-Green-Refactor cycle drives feature work, bug fixes, and refactoring with verified behavior.
  • Mandatory tests first: tests fail before production code is implemented, improving confidence and preventing regressions.
  • Clear testing practices: naming, coverage expectations, and disciplined refactoring to maintain code quality.

Quick Start

Write a failing test for the desired behavior, implement the minimal code to pass, then refactor for clarity.

Frequently Asked Questions about test-driven-development

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

FAQPage Schema
How does test-driven development prevent code regressions?▼

Test-driven development prevents regressions by enforcing mandatory tests that fail before production code is implemented, ensuring features satisfy explicit tests and boosting confidence during bug fixes or refactoring.

How do I apply the Red-Green-Refactor workflow to implement new features?▼

To apply the Red-Green-Refactor workflow, write a failing test for the desired behavior, implement the minimal code required to pass the test, then refactor the code for clarity while maintaining verified behavior.

What are the best practices for test naming and coverage in TDD?▼

Best practices for test naming and coverage in TDD include specifying clear testing practices with consistent naming conventions, defining coverage expectations, and executing disciplined refactoring to maintain code quality.

Can I use test-driven development for refactoring existing projects?▼

Yes, you can use test-driven development for refactoring existing projects; the Red-Green-Refactor cycle drives refactors by verifying correct behavior through mandatory tests before changing production code.

When should I write tests before implementing production code?▼

You should write tests before implementing production code when working on new features, bug fixes, or refactors across projects to ensure correct behavior, guide design, and prevent gaps in test coverage.

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