test-driven-development

Enforce the RED-GREEN-REFACTOR cycle with a test-first approach.

4|Updated May 14, 2026
One-click install
npx skills add https://github.com/liumeixin/hermes-skills --skill test-driven-development-liumeixin
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: test-driven-development
Source: https://github.com/liumeixin/hermes-skills/tree/main/software-development/test-driven-development
Command: npx skills add https://github.com/liumeixin/hermes-skills --skill test-driven-development-liumeixin

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) components.

What problem does it solve?

This Skill ensures that every feature or bug fix is implemented with a reliable and structured approach, using the Test-Driven Development (TDD) cycle, which minimizes the risk of bugs and enhances code quality.

Core Features & Use Cases

  • Test-First Approach: Encourages writing tests before writing code to validate the functionality.
  • RED-GREEN-REFACTOR Cycle: Follows a structured cycle to develop code iteratively and maintainably.
  • Error Handling and Safety: Includes checks to ensure that the tests are failing as expected before moving to the next step.

Quick Start

Use the TDD skill to start implementing a new feature by writing a test that describes the desired behavior.

Frequently Asked Questions about test-driven-development

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

FAQPage Schema
How do I implement test-driven development for new features?▼

Test-driven development is implemented by enforcing the RED-GREEN-REFACTOR cycle with a test-first approach, writing tests before code to validate functionality and reduce bugs.

What is the RED-GREEN-REFACTOR cycle in TDD?▼

The RED-GREEN-REFACTOR cycle is a structured TDD methodology that develops code iteratively by writing failing tests first, making them pass, and then refining the code for maintainability.

How do I fix bugs using a test-first approach?▼

A test-first approach fixes bugs by writing a test that describes the desired behavior and confirms the failure, ensuring structured error handling before implementing the actual code fix.

What do I need to know before using TDD for bug fixing?▼

Using TDD for bug fixing requires an understanding of basic testing principles and the TDD methodology to ensure high code quality and reliable feature implementation.

Does test-driven development improve code quality?▼

Test-driven development improves code quality by following a structured cycle that minimizes the risk of bugs and includes safety checks to ensure tests fail as expected before proceeding.

When should I not use the RED-GREEN-REFACTOR cycle?▼

The RED-GREEN-REFACTOR cycle may not suit rapid prototyping or exploratory coding where immediate functionality is prioritized over comprehensive test coverage and iterative validation.