test-driven-development

Enforce test-driven development with a red-green-refactor cycle across code changes.

Updated Aug 27, 2026
One-click install
npx skills add https://github.com/reiserwang/Coding_Agent --skill test-driven-development-reiserwang
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: test-driven-development
Source: https://github.com/reiserwang/Coding_Agent/tree/main/.gemini/skills/test-driven-development
Command: npx skills add https://github.com/reiserwang/Coding_Agent --skill test-driven-development-reiserwang

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Enforce a disciplined development process by ensuring tests drive every change, preventing untested production code.

Core Features & Use Cases

  • Red-Green-Refactor cycle: Write a failing test, make it pass, and refactor safely.
  • Guaranteed test coverage mindset: Keeps changes aligned with expected behavior through tests.
  • Team and CI friendly: Works across languages and integrates with CI to enforce guardrails.

Quick Start

Write a failing test for the behavior you intend to implement, then create the minimal production code to make it pass, and finally refactor while keeping all tests green.

Frequently Asked Questions about test-driven-development

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

FAQPage Schema
How do I enforce a test-first coding workflow for new features and bug fixes?

Test-driven development enforces a test-first coding workflow by requiring a failing test before any production code. It automates the red-green-refactor cycle to ensure tests drive every code change across software development.

What is the red-green-refactor cycle and how does it prevent untested code?

The red-green-refactor cycle prevents untested code by having you write a failing test, create minimal production code to pass it, and refactor safely. This disciplined process guarantees a test coverage mindset for expected behavior.

Can I use test-driven development practices across different programming languages?

Yes, test-driven development practices apply across different programming languages and teams. The process works universally by enforcing predictable test-first instructions before writing production code, regardless of the language used.

How do I integrate test-driven development guardrails into my CI pipeline?

You integrate test-driven development into CI pipelines by applying strict adherence checks for failing tests before production code. This CI-friendly approach enforces guardrails across code changes to maintain software quality.

How do I start writing code using a test-driven development approach?

To start test-driven development, write a failing test for the behavior you intend to implement. Then, create the minimal production code to make it pass, and finally refactor while keeping all tests green.