test-driven-development

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

Enforce Test-Driven Development by mandating failing tests before implementation code.

Updated Feb 16, 2026

Search Tags:#code quality #testing #tdd #software development #agile #regression prevention

Ready to run

npx skills add https://github.com/GaryOcean428/vex-agent --skill test-driven-development-garyocean428

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: test-driven-development
Source: https://github.com/GaryOcean428/vex-agent/tree/main/.agents/skills/test-driven-development
Command: npx skills add https://github.com/GaryOcean428/vex-agent --skill test-driven-development-garyocean428

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill enforces a rigorous Test-Driven Development (TDD) process, ensuring that all new code is written only after a failing test has been created, thereby preventing regressions and improving code reliability.

Core Features & Use Cases

Enforces TDD: Mandates writing tests before implementation code for new features, bug fixes, and refactoring.
Red-Green-Refactor Cycle: Guides users through the essential steps of writing a failing test, writing minimal code to pass, and then refactoring.
Use Case: When developing a new user authentication module, you would first write a test for successful login, then implement the minimal code to make that test pass, and finally refactor the code for clarity and efficiency.

Quick Start

Always write a failing test before writing any new implementation code.

Frequently Asked Questions about test-driven-development

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

FAQPage Schema

What is test-driven development and how does the Red-Green-Refactor cycle work?▼

Test-driven development requires writing a failing test before any implementation code. The Red-Green-Refactor cycle guides you through writing a failing test, creating minimal code to pass it, and then refactoring for clarity and efficiency.

How do I start writing failing tests before implementation code for new features?▼

Start writing failing tests by defining the expected behavior of your new feature as an executable specification. Write a test that fails, implement the minimal code required to make it pass, and then refactor the implementation to ensure code quality.

Can I use test-driven development for both bug fixes and refactoring existing code?▼

Yes, you can use test-driven development for bug fixes and refactoring existing code. Mandate the creation of a failing test that reproduces the bug or verifies current behavior before applying any code changes to prevent regressions.

What's the best way to prevent regressions when developing software in an agile workflow?▼

The best way to prevent regressions in agile software development is enforcing test-driven development. By mandating failing tests prior to writing implementation code, you document behavior through executable specifications and ensure continuous code reliability.

Do I need prior testing experience to follow strict test-driven development principles?▼

Prior testing experience is not explicitly required, but understanding strict testing principles is necessary. The intermediate implementation depth guides you through the TDD methodology, making it accessible for developers seeking to improve code quality and enforce regression prevention.

When should I not use test-driven development for a software project?▼

You should not use test-driven development when exploring experimental code spikes or rapid prototyping where behavior is undefined. TDD requires clear behavioral specifications to write failing tests first, making it less suitable for early exploratory phases lacking defined requirements.