Can I write code before the test with this skill enabled?

No, the skill's philosophy is to delete any code written before its corresponding test to ensure a true, disciplined TDD workflow.

Is this skill compatible with my existing test framework?

Yes, it is designed to work within your current environment, driving the development process through the standard failing and passing states of your chosen test runner.

Why is the RED phase critical in this workflow?

Seeing a test fail (RED) confirms that the test is actually testing the intended behavior and is not providing a false positive or passing by accident.

What is the 'Iron Law' of this TDD skill?

The Iron Law mandates that no production code is written without first seeing a test fail, ensuring all code serves a verified requirement.

How does this skill handle bug fixes?

It requires reproducing the bug with a failing test first, then applying the fix to satisfy the test, and keeping the test to prevent future regressions.

Test-Driven Development (TDD)

Name: Test-Driven Development (TDD)
Author: tjboudreaux

bytjboudreaux

0•

Security & Testing

Enforces a disciplined Red-Green-Refactor cycle by requiring failing tests before any production code is written.

The eng-tdd skill transforms Claude into a rigorous TDD practitioner, ensuring high code quality through a strict 'test-first' methodology. It mandates the Red-Green-Refactor cycle, preventing the accumulation of technical debt by verifying that every piece of production code satisfies a pre-existing failing test. This skill is essential for developers who prioritize reliability and maintainability, as it forces the identification of requirements through code and prevents the introduction of untested logic or over-engineered solutions.

Key Features

01Safe refactoring protocols while maintaining a 'green' state

02Minimalist code implementation to satisfy specific test requirements

030 GitHub stars

04Automated bug reproduction workflows through failing test cases

05Verification of test failure (RED) before allowing implementation

06Strict enforcement of the Red-Green-Refactor cycle

Use Cases

01Reproducing and fixing bugs by creating regression tests first

02Modernizing legacy codebases through safe, incremental refactoring

03Building new features with a test-first architectural approach

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add tjboudreaux/cc-engineering-skills eng-tdd

For use in Claude.ai and ChatGPT

Download Skill