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test-driven-development

Enforce a test-driven development workflow with the RED-GREEN-REFACTOR cycle.

Updated Mar 27, 2026
Search Tags:#tdd#red-green-refactor#quality-assurance#software-engineering#test-driven-development#testing-practices
One-click install
npx skills add https://github.com/erenisiklar/Pusula --skill test-driven-development-erenisiklar
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: test-driven-development
Source: https://github.com/erenisiklar/Pusula/tree/main/.claude/skills/test-driven-development
Command: npx skills add https://github.com/erenisiklar/Pusula --skill test-driven-development-erenisiklar

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Writing tests first to guide development and prevent regressions throughout the lifecycle.

Core Features & Use Cases

  • Enforces the RED-GREEN-REFACTOR cycle across languages and frameworks.
  • Promotes test-first discipline to catch design issues early.
  • Guides when to apply TDD for features, bug fixes, and refactoring.

Quick Start

Start by writing a failing test for the desired behavior, then implement the minimal code to pass and refactor.

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 is a workflow ensuring production code is written only after a failing test is defined. The red-green-refactor cycle mandates writing a failing test, implementing minimal code to pass, and then refactoring for maintainable design.

How do I apply test-first discipline when fixing bugs or adding new features?▼

Apply test-first discipline by writing a failing test that defines the desired behavior or bug scenario before any production code changes. This strict test-driven development workflow ensures incremental development and prevents regressions across languages and frameworks.

When should I use test-driven development for refactoring existing code?▼

Use test-driven development for refactoring to ensure behavior changes are guided by clear, pre-defined tests. This test-first discipline catches design issues early and enforces the Iron Law, demanding incremental development to maintain code quality and coverage.

Does test-driven development work across different programming languages and testing frameworks?▼

Test-driven development is applicable across languages and frameworks for feature implementation, bug fixes, and behavior changes. It guides the red-green-refactor cycle universally without requiring specific dependencies, ensuring reliable code regardless of the software stack.

Why does writing tests first help catch software design issues early?▼

Writing tests first helps catch design issues early because defining a failing test forces you to specify desired behavior clearly before implementation. This test-first discipline promotes maintainable design and sets strict expectations for test coverage throughout the lifecycle.

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