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test-driven-development

Guide write-test-first cycles with a Red-Green-Refactor workflow.

27|9|Updated Feb 3, 2026
Search Tags:#workflow#TDD#unit testing#test-driven development#red-green-refactor#software-engineering
One-click install
npx skills add https://github.com/datasciencemonkey/claude-code-cli-bricks --skill test-driven-development-datasciencemonkey
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: test-driven-development
Source: https://github.com/datasciencemonkey/claude-code-cli-bricks/tree/main/.claude/skills/test-driven-development
Command: npx skills add https://github.com/datasciencemonkey/claude-code-cli-bricks --skill test-driven-development-datasciencemonkey

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This skill guides teams to adopt test-driven development (TDD), ensuring tests drive implementation and guard against regression. It helps maintain code quality by forcing a failure test before any production code and promoting minimal, verifiable changes.

Core Features & Use Cases

  • Red-Green-Refactor workflow: teaches the cycle for new features, bug fixes, and refactors.
  • Fails-first discipline: requires a failing test before adding or modifying production code.
  • Documentation of intent: clarifies expected behavior and supports future maintenance.

Quick Start

Apply TDD to a small feature by writing a failing test first, implementing the minimal code to pass, and refactoring for readability and resilience.

Frequently Asked Questions about test-driven-development

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

FAQPage Schema
What is the red-green-refactor workflow in test-driven development?▼

The red-green-refactor workflow in test-driven development is a cycle where you write a failing test first, implement the minimal code to pass it, and then refactor for readability. This enforces verifiable changes and guards against regression.

How do I start practicing test-driven development for feature development?▼

To start test-driven development for a new feature, write a failing unit test that defines the expected behavior, implement the minimal production code to make it pass, and then refactor the code for resilience.

Can I use test-driven development for bug fixes and refactoring tasks?▼

Yes, you can apply test-driven development to bug fixes and refactoring tasks across projects and languages. You start by writing a failing test that reproduces the bug or verifies the intended structure before modifying production code.

Why does test-driven development require a failing test before implementation?▼

Test-driven development requires a failing test before implementation to document intent and clarify expected behavior. This discipline forces minimal, verifiable changes and ensures tests drive the implementation rather than just validating it afterward.

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

Test-driven development works across projects and languages by enforcing a universal write-test-first cycle. It applies language-agnostic principles to ensure code correctness through minimal, verifiable changes during feature development and refactoring.

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