tdd

Guide test-first development with red-green-refactor cycles and isolation rules.

3|1|Updated Jan 27, 2026
One-click install
npx skills add https://github.com/thongdn-it/react-agent-skills --skill tdd-thongdn-it
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: tdd
Source: https://github.com/thongdn-it/react-agent-skills/tree/main/skills/tdd
Command: npx skills add https://github.com/thongdn-it/react-agent-skills --skill tdd-thongdn-it

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) and assets (resource) components.

What problem does it solve?

This skill provides a structured approach to practicing Test-Driven Development, guiding AI agents and developers to write tests before implementation, follow red-green-refactor cycles, and maintain high-quality, behavior-focused code.

Core Features & Use Cases

  • Red-Green-Refactor cycle guidance with practical rules to minimize defects during development.
  • Test design principles (Arrange-Act-Assert, one logical assertion per test, behavior-not-implementation focus) to improve readability and reliability.
  • Data management, isolation, and organizational guidelines to enable deterministic, fast feedback across frontend and backend projects.

Quick Start

Write a failing test for a small behavior, then implement just enough code to pass it and refactor.

Frequently Asked Questions about tdd

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

FAQPage Schema
How do I practice Test-Driven Development effectively across frontend and backend projects?

Test-Driven Development solves quality and defect issues by enforcing a structured discipline of writing tests before implementation. It guides you through red-green-refactor cycles to maintain high-quality, behavior-focused code.

How do I design tests using the Arrange-Act-Assert pattern in TDD?

Design tests in TDD using the Arrange-Act-Assert pattern to improve readability and reliability. This skill enforces test design principles like one logical assertion per test and a behavior-not-implementation focus for better maintainability.

Can I use TDD to guide refactoring and ensure code isolation?

Yes, you can use TDD to guide refactoring and ensure code isolation. This skill provides data management and organizational guidelines to enable deterministic, fast feedback while maintaining strict isolation across your codebase.

Does this TDD approach include framework-specific testing rules?

No, this TDD approach avoids framework-specific details entirely. It provides general test design principles and category-specific rules for red-green-refactor, design, isolation, data, assertions, organization, performance, and strategy instead.