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test-driven-development

Enforce a red-green-refactor test-first workflow for software projects.

Updated Aug 23, 2026
Search Tags:#tdd#red-green-refactor#quality-assurance#software-engineering#test-driven-development
One-click install
npx skills add https://github.com/luxunxiansheng/skills2026 --skill test-driven-development-luxunxiansheng
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: test-driven-development
Source: https://github.com/luxunxiansheng/skills2026/tree/main/test-driven-development
Command: npx skills add https://github.com/luxunxiansheng/skills2026 --skill test-driven-development-luxunxiansheng

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Test-driven development (TDD) helps teams verify behavior before or during implementation, reducing regressions and guiding clean design.

Core Features & Use Cases

  • Establishes a fail-fast feedback loop by writing a failing test first (RED), implementing minimal code to pass (GREEN), and refactoring without altering behavior (REFACTOR).
  • Applies to new features, bug fixes, and refactors to ensure correct behavior and maintainability across codebases.
  • Encourages deterministic, repeatable test execution to improve confidence during development and deployments.

Quick Start

Write a failing test that describes the desired behavior, then implement just enough code to pass the test, and finally refactor to improve clarity while keeping tests green.

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 cycle in test-driven development?▼

Test-driven development uses the red-green-refactor cycle: writing a failing test first, implementing minimal code to pass it, then refactoring to improve clarity without altering behavior.

How do I start writing tests first for a new software feature?▼

To start writing tests first, describe the desired behavior with a failing test, implement just enough code to make it pass, and refactor the code while keeping the tests green.

Does test-driven development work for bug fixes and refactoring existing code?▼

Yes, test-driven development applies to bug fixes and refactors by establishing a fail-fast feedback loop that validates correct behavior and maintainability across typical software projects.

Why do I need deterministic test execution in my test-first workflow?▼

Deterministic, repeatable test execution is required in a test-first workflow to ensure reliable validation of behavior and improve deployment confidence by avoiding flaky test results.

What problems does a test-first workflow solve for software engineering teams?▼

A test-first workflow helps software engineering teams verify behavior before or during implementation, reducing regressions and guiding clean code design across the project codebase.

Can I use test-driven development for any programming language or platform?▼

Test-driven development applies broadly across typical software projects and codebases, requiring only real tests and deterministic execution rather than specific platforms or external dependencies.

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