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NAinfini
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test-driven-development

Write failing tests first and follow the red-green-refactor cycle.

Updated Aug 23, 2026
Search Tags:#TDD#refactoring#test-driven development#red-green-refactor#unit-testing#software-engineering
One-click install
npx skills add https://github.com/NAinfini/Guild_Management --skill test-driven-development-nainfini
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: test-driven-development
Source: https://github.com/NAinfini/Guild_Management/tree/main/.kilocode/skills/test-driven-development
Command: npx skills add https://github.com/NAinfini/Guild_Management --skill test-driven-development-nainfini

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Test-driven development reduces bugs by forcing tests before implementation, ensuring correctness from the start rather than after code is written.

Core Features & Use Cases

  • Defines expected behavior with tests first to guide implementation.
  • Prevents regressions by running automated tests after every change.
  • Applicable to features, bug fixes, and refactors across the codebase, in both small and large teams.

Quick Start

Start by writing a failing test that captures the desired behavior, run the test to see it fail, implement the minimal production code to pass, then run tests again and refactor for clarity and maintainability.

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 regressions during refactoring?▼

Test-driven development prevents regressions by enforcing a failing test first, ensuring automated tests validate behavior after every change during refactoring or bugfix cycles.

How do I start writing unit tests using the red-green-refactor cycle?▼

Start the red-green-refactor cycle by writing a failing test capturing desired behavior, run it to fail, implement minimal code to pass, then refactor for clarity and maintainability.

Can I use test-driven development with my existing test framework and CI?▼

Yes, you can use test-driven development with your existing test framework and CI by writing failing tests first and running automated tests after every change to validate features.

What is the best way to implement a bugfix without causing unexpected behavior changes?▼

The best way to implement a bugfix without unexpected behavior changes is test-driven development, which requires writing a failing test first to define expected behavior and prevent regressions.

When should I not use the test-first approach for software engineering?▼

You should not use the test-first approach if you cannot define expected behavior with a failing test upfront, as test-driven development relies on validating changes through automated tests before implementation.

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