test-driven-development

Name: test-driven-development
Availability: InStock
Author: gregsgreycode

Enforce a test-first RED-GREEN-REFACTOR workflow with failing tests before implementation.

6|2|Updated Mar 19, 2026

Search Tags:#workflow #testing #tdd #quality #red-green-refactor #software-engineering #unit-tests

Ready to run

npx skills add https://github.com/GregsGreyCode/Logos --skill test-driven-development-gregsgreycode

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: test-driven-development
Source: https://github.com/GregsGreyCode/Logos/tree/main/skills/software-development/test-driven-development
Command: npx skills add https://github.com/GregsGreyCode/Logos --skill test-driven-development-gregsgreycode

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Implementing features or fixing bugs without tests leads to fragile code. This skill enforces a RED-GREEN-REFACTOR cycle with a test-first approach, helping teams build resilient software from the start.

Core Features & Use Cases

Enforces writing failing tests before production code to establish correct behavior.
Guides developers through the RED-GREEN-REFACTOR workflow to reduce regressions.
Applicable to feature development, bug fixes, and refactoring across software projects.

Quick Start

Begin by writing a failing test, run the test suite to observe the failure, implement the minimal code to pass, then refactor.

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 a test-first development workflow to prevent production bugs?▼

Test-first development enforces a strict RED-GREEN-REFACTOR cycle, requiring you to write failing unit tests before implementing minimal production code. This workflow prevents bugs by establishing correct behavior upfront and guiding incremental coding to pass tests.

What is the RED-GREEN-REFACTOR cycle in software engineering?▼

The RED-GREEN-REFACTOR cycle is a test-first workflow where you first write a failing test (RED), implement minimal code to pass it (GREEN), and then refactor the codebase. It reduces regressions across diverse codebases during feature development and bug fixes.

How do I use unit tests to guide new feature development and refactoring?▼

You use unit tests to guide development by writing a failing test to establish desired behavior, running the test suite to observe the failure, implementing minimal code to pass, and refactoring. This test-first approach ensures resilient software for new features and refactors.

Can I apply test-driven development to both bug fixes and refactoring existing code?▼

Yes, test-driven development is applicable to feature development, bug fixes, and refactoring across diverse software projects. It prevents fragile code by enforcing a test-first workflow that reduces regressions and ensures reliable behavior from the start.

Why does writing tests before implementation lead to more reliable features?▼

Writing failing tests before production code leads to reliable features by establishing correct behavior upfront. The RED-GREEN-REFACTOR workflow enforces minimal, incremental coding to pass tests, which prevents production bugs and reduces regressions.

Do I need a specific testing framework to follow a test-first workflow?▼

No specific framework is required, as the test-first workflow runs tests with a standard testing framework of your choice. The process focuses on the RED-GREEN-REFACTOR cycle, requiring only a standard framework to run unit tests and observe failures before implementation.