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test-driven-development

Implement the Test-Driven Development cycle with failing tests before code.

4|2|Updated May 4, 2026
Search Tags:#TDD#code-quality#developer-tools#test-driven-development#software-testing
One-click install
npx skills add https://github.com/zpyoung/quirk --skill test-driven-development-zpyoung
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: test-driven-development
Source: https://github.com/zpyoung/quirk/tree/main/skills/test-driven-development
Command: npx skills add https://github.com/zpyoung/quirk --skill test-driven-development-zpyoung

SYSTEM DOCUMENTATION & REQUIREMENTS

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

What problem does it solve?

This Skill unit provides guidance on implementing Test-Driven Development (TDD), ensuring code reliability and functionality.

Core Features & Use Cases

  • Test-Driven Development Process: Offers instructions for writing tests before code, ensuring the right behavior is implemented.
  • Red-Green-Refactor Cycle: Explains the TDD cycle with detailed steps and examples.
  • Testing Anti-Patterns: Lists common pitfalls in testing and how to avoid them.
  • Quick Start: Walks through writing a test for a retry operation and verifying it.

Quick Start

Use the TDD skill to implement a failing test for a retry operation before writing any implementation code.

Frequently Asked Questions about test-driven-development

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

FAQPage Schema
What is the test-driven development cycle and how does it work?▼

Test-driven development involves writing a failing test before implementation, writing minimal code to pass the test, and then refactoring. This RED-GREEN-REFACTOR cycle ensures code reliability and validates expected behavior.

How do I implement a failing test for a retry operation using TDD?▼

To implement a retry operation with TDD, write a failing test defining the expected retry behavior before creating any implementation code. This verifies the functionality and reliability of the retry logic through the test-driven process.

What are common testing anti-patterns and pitfalls in test-driven development?▼

Common testing anti-patterns in test-driven development include writing tests after implementation and overcomplicating test logic. Avoiding these pitfalls ensures tests accurately validate functionality and maintain software reliability.

When should I use test-driven development for software testing?▼

Use test-driven development when you need to ensure robust code reliability and precise functionality. It is ideal for defining software behavior upfront and preventing common testing pitfalls through the RED-GREEN-REFACTOR cycle.

Does test-driven development require specific frameworks or dependencies?▼

Test-driven development does not require specific external dependencies or frameworks. The methodology focuses on the process of writing tests before code, making it adaptable to any software testing environment.

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