test-driven-development

Enforce the Red-Green-Refactor cycle with failing tests before implementation.

9|Updated Jul 1, 2026

Search Tags:#testing #tdd #development #refactoring #pytest #quality

Ready to run

npx skills add https://github.com/Cyapstaye/Adame_ver.open --skill test-driven-development-cyapstaye

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: test-driven-development
Source: https://github.com/Cyapstaye/Adame_ver.open/tree/main/skills/software-development/test-driven-development
Command: npx skills add https://github.com/Cyapstaye/Adame_ver.open --skill test-driven-development-cyapstaye

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This skill solves the problem of unreliable, bug-prone code by enforcing a rigorous Test-Driven Development (TDD) cycle that ensures every feature is verified by a test before it is implemented.

Core Features & Use Cases

Red-Green-Refactor Enforcement: Guides the agent through the mandatory cycle of writing a failing test, implementing minimal code, and refactoring.
Regression Prevention: Ensures that all new code is covered by tests, preventing future regressions.
Use Case: When building a new API endpoint, use this skill to define the expected behavior in a test file first, ensuring the implementation is strictly driven by requirements rather than assumptions.

Quick Start

Use the test-driven-development skill to guide the implementation of the new user authentication feature by writing the failing test case first.

Frequently Asked Questions about test-driven-development

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

FAQPage Schema

How do I enforce test-driven development when building new features?▼

You can enforce test-driven development by applying the Red-Green-Refactor cycle, which requires writing a failing test for the expected behavior before implementing any production code, ensuring high code quality and regression prevention.

What is the best way to prevent code regressions during refactoring?▼

The best way to prevent regressions during refactoring is to maintain a test suite that validates existing behavior, ensuring all new code is strictly driven by failing tests before implementation to verify production code continuously.

How do I write tests first using pytest for an API endpoint?▼

To write tests first using pytest, define the expected API behavior in a test file and execute the suite to confirm it fails, then implement the minimal code required to turn the failing test green.

Do I need terminal access to run pytest and validate my test suite?▼

Yes, you need terminal access to execute testing frameworks like pytest and validate your test suites, as the Red-Green-Refactor cycle requires running tests to confirm initial failures and subsequent implementation success.

Why does test-driven development require behavior-driven design?▼

Test-driven development requires behavior-driven design because defining failing tests first ensures the implementation is strictly driven by actual requirements rather than assumptions, naturally enforcing reliable and bug-prone-free code.

Can I use this skill for behavior-driven design without a testing framework?▼

No, this skill requires access to terminal tools and testing frameworks like pytest to execute and validate test suites, as the core mechanism relies on running tests to verify the Red-Green-Refactor cycle.