tdd

Guide test-driven development by writing failing tests before implementation.

Updated Mar 9, 2026

Search Tags:#testing #tdd #quality assurance #refactoring #software development

Ready to run

npx skills add https://github.com/hheydaroff/common-agent-skills --skill tdd-hheydaroff

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: tdd
Source: https://github.com/hheydaroff/common-agent-skills/tree/main/skills/tdd
Command: npx skills add https://github.com/hheydaroff/common-agent-skills --skill tdd-hheydaroff

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill addresses the challenge of developing reliable software by guiding users through test-driven development principles, ensuring quality and maintainability.

Core Features & Use Cases

Implementation Validation: Helps you build features incrementally by first writing a failing test and then making it pass.
Refactor Support: Encourages safe refactoring after all tests pass, reducing regressions.
Use Case: When developing a new module, use this Skill to define behavior tests first, then implement the code to pass these tests, ensuring robust functionality.

Quick Start

Use the tdd skill to plan your tests, write one test for a feature, then develop the code to pass it step-by-step.

Frequently Asked Questions about tdd

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

FAQPage Schema

How do I start test-driven development for a new software module?▼

Start test-driven development by defining behavior tests for a new module, then incrementally implement code to pass those tests. This approach ensures robust functionality and maintains code quality throughout the development workflow.

What is the red-green-refactor process in software testing?▼

The red-green-refactor process is a disciplined testing practice where you write a failing test, implement code to make it pass, and then safely refactor. This incremental cycle reduces regressions and ensures maintainable software.

How does test-driven development help with safe code refactoring?▼

Test-driven development supports safe refactoring by ensuring all behavior tests pass before you modify code. This practice reduces regressions and provides a safety net, allowing you to improve code structure without breaking existing functionality.

Do I need to understand testing principles to use behavior-driven design?▼

Yes, you need a solid understanding of testing principles and clear interface design to effectively use behavior-driven design. This knowledge is required to write effective tests and guide incremental implementation successfully.

When should I use test-driven development in my software development workflow?▼

Use test-driven development when your software development workflow emphasizes code quality, refactoring safety, and behavior-driven design. It is ideal for building features incrementally and ensuring reliable, maintainable software.