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test-driven-development

Guide software engineers through structured test-first development cycles.

1|Updated Apr 1, 2026
Search Tags:#testing#best practices#TDD#software quality#development process
One-click install
npx skills add https://github.com/zeptillionairplex/karpathy-claude-code-prompt-principle --skill test-driven-development-zeptillionairplex
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: test-driven-development
Source: https://github.com/zeptillionairplex/karpathy-claude-code-prompt-principle/tree/main/.claude/skills/test-driven-development
Command: npx skills add https://github.com/zeptillionairplex/karpathy-claude-code-prompt-principle --skill test-driven-development-zeptillionairplex

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill guides users in adopting test-driven development to prevent bugs and ensure code quality from the outset.

Core Features & Use Cases

  • Structured TDD Workflow : Facilitates writing failing tests prior to code implementation.
  • Educational Guidance : Teaches the Red-Green-Refactor cycle with detailed instructions.
  • Use Case : Helps developers implement new features or fix bugs confidently by following systematic testing steps.

Quick Start

Describe the desired API behavior, then write a test expecting that behavior to automatically fail, followed by minimal code to pass the test.

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 it improve software quality?▼

Test-driven development is a test-first methodology where you write failing tests before implementation code to prevent bugs and ensure software quality from the outset of development.

How do I start implementing a test-first development workflow for a new feature?▼

To start test-first development, describe the desired API behavior, write a test expecting that behavior to automatically fail, then write minimal code to pass the failing test systematically.

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

The Red-Green-Refactor cycle is a structured TDD workflow where you write a failing test, implement minimal code to make it pass, and then refactor the code while keeping tests green.

Do I need external dependencies or testing frameworks to follow TDD best practices?▼

No external dependencies are required to follow these TDD best practices, as the Skill provides structured test cycle guidance and educational instructions independently.

Can I use test-driven development to fix existing bugs systematically?▼

Yes, test-driven development helps developers fix bugs confidently by writing a failing test that reproduces the bug, then implementing code changes until the test passes.

When should I not use a test-first development approach?▼

Test-first development may not suit exploratory prototyping or throwaway scripts where immediate functional output takes priority over long-term software quality and bug prevention.

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