tdd

Guide test-first development with red-green-refactor cycles using Python unittest or pytest.

4|Updated Jan 28, 2026

Search Tags:#code quality #testing #tdd #refactoring #red-green-refactor

Ready to run

npx skills add https://github.com/hwj123hwj/custom-skills --skill tdd-hwj123hwj

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: tdd
Source: https://github.com/hwj123hwj/custom-skills/tree/main/skills/tdd
Command: npx skills add https://github.com/hwj123hwj/custom-skills --skill tdd-hwj123hwj

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires unittest, pytest, and includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill helps developers streamline their coding process with Test-Driven Development (TDD), leading to more robust, maintainable code and fewer bugs.

Core Features & Use Cases

Test-First Approach: Write tests before writing code, ensuring code quality from the start.
Red-Green-Refactor Loop: Execute the test, see it fail (red), write code to make it pass (green), then refactor the code (refactor).
Integration Tests: Enhance test coverage and ensure that the integration of different components works correctly.
Use Case: When starting a new feature or bug fix, use TDD to create tests for the expected behavior, then implement the functionality that passes those tests.

Quick Start

Run the TDD skill with your codebase to get started with TDD practices.

Frequently Asked Questions about tdd

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

FAQPage Schema

What is the red-green-refactor loop in Test-Driven Development?▼

The red-green-refactor loop in Test-Driven Development is a cycle where you write a failing test, write code to make it pass, and then refactor the code to improve structure and reliability. This Skill guides engineers through these steps.

How do I start writing tests before code to improve code quality?▼

To start writing tests before code and improve code quality, run this Skill with your codebase to apply the Test-Driven Development approach, creating tests for expected behavior before implementing the functionality that passes those tests.

Can I use pytest and unittest for Test-Driven Development with this Skill?▼

Yes, you can use pytest and unittest for Test-Driven Development. This Skill explicitly requires Python's unittest or pytest libraries to execute the test-first development and refactoring cycles.

Does Test-Driven Development help with writing integration tests?▼

Yes, Test-Driven Development helps with writing integration tests. This Skill enhances test coverage and ensures that the integration of different components works correctly by applying test-first practices.

When should I use Test-Driven Development for my Python project?▼

You should use Test-Driven Development for your Python project when starting a new feature or bug fix. It creates tests for expected behavior first, leading to more robust, maintainable code and fewer bugs.

What is the best way to structure code using a test-first approach?▼

The best way to structure code using a test-first approach is to follow the red-green-refactor cycle. Write failing tests first, implement the minimum code to pass them, and then refactor to ensure high code reliability and maintainability.