test-driven-development

Enforce the Red-Green-Refactor cycle for verified production code.

1|Updated Jun 3, 2026
One-click install
npx skills add https://github.com/LazyNinja435/astrai --skill test-driven-development-lazyninja435
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: test-driven-development
Source: https://github.com/LazyNinja435/astrai/tree/main/.ai/skills/dev/test-driven-development
Command: npx skills add https://github.com/LazyNinja435/astrai --skill test-driven-development-lazyninja435

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This skill eliminates the technical debt and unverified logic that arises from writing code before tests, ensuring every feature is backed by a failing test that proves its necessity.

Core Features & Use Cases

  • Red-Green-Refactor Enforcement: Guides the agent through the mandatory TDD cycle to ensure code is only written to satisfy a failing test.
  • Anti-Pattern Prevention: Provides strict guardrails against common testing mistakes like mocking behavior instead of real logic or adding test-only methods to production code.
  • Use Case: When tasked with implementing a new retry mechanism for an API client, this skill forces the agent to write a failing test case for the retry logic before a single line of production code is written.

Quick Start

Apply the test-driven-development skill to guide the implementation of the new user authentication module.

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 test-driven development discipline when implementing new features?

Test-driven development discipline is enforced by guiding the development cycle through Red-Green-Refactor stages, ensuring production code is written only to satisfy a failing test. This guarantees every feature is backed by a test that proves its necessity.

What is the Red-Green-Refactor cycle in TDD?

The Red-Green-Refactor cycle is a test-driven development process where you first write a failing test, then write the minimum production code to make it pass, and finally refactor the code. It ensures all logic is verified by tests before implementation.

How do I avoid testing anti-patterns like mocking behavior instead of real logic?

Avoiding testing anti-patterns like mocking behavior requires strict guardrails during the test-driven development lifecycle. This prevents mistakes like adding test-only methods to production code and ensures tests validate actual behavior rather than mocked logic.

Can I use TDD principles for bug fixes and code refactoring tasks?

Yes, you can apply TDD principles to bug fixes and refactoring tasks where code reliability and regression prevention are critical. The Red-Green-Refactor cycle ensures that fixes and refactored code are fully verified by failing tests before implementation.

When should I not use test-driven development for my code?

You should reconsider test-driven development when strict adherence to the Red-Green-Refactor cycle is impractical for your task. If avoiding testing anti-patterns or writing failing tests before implementation conflicts with your project constraints, alternative quality assurance approaches may be needed.