test-driven-development

Enforce test-first development with red-green-refactor cycles and minimal viable code.

1|Updated Apr 10, 2026
One-click install
npx skills add https://github.com/Rysnz/OpenHarness --skill test-driven-development-rysnz
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: test-driven-development
Source: https://github.com/Rysnz/OpenHarness/tree/main/src/crates/core/builtin_skills/test-driven-development
Command: npx skills add https://github.com/Rysnz/OpenHarness --skill test-driven-development-rysnz

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Reducing bugs and misaligned requirements by enforcing a test-first workflow where tests guide implementation.

Core Features & Use Cases

  • Red-Green-Refactor cycle: write a failing test, implement minimal code to pass, then refactor with confidence.
  • Strengthens design and safety during feature development, bug fixes, and refactors by preventing untested production code.
  • Supports teams adopting TDD as a disciplined approach to software quality and maintainability.

Quick Start

Begin by writing a failing test, then implement only enough 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
How does test-driven development reduce bugs in software engineering?▼

Test-driven development reduces bugs by enforcing a test-first workflow where you write a failing test before implementation, ensuring requirements are validated before production code is written.

What is the red-green-refactor cycle in TDD?▼

The red-green-refactor cycle in TDD involves writing a failing test, implementing minimal code to pass the test, and then refactoring the code with confidence while maintaining test validation.

How do I start writing tests before code for feature development?▼

To start test-first feature development, write a failing test that defines the desired behavior, implement only enough minimal viable code to pass that test, and then refactor safely.

Can I apply TDD to bug fixes and refactoring existing code?▼

Yes, TDD applies to bug fixes and refactoring by strengthening design and safety, preventing untested production code through disciplined test validation before changing existing software.

Does test-driven development work for team workflows?▼

Test-driven development supports teams by adopting a disciplined approach to software quality, enforcing red-green-refactor cycles and minimal viable code requirements across team workflows.