Test-Driven Development FAQs

Question 1

When should I use this skill with Claude Code?

Accepted Answer

You should use this skill for all new features, bug fixes, and refactoring tasks. It is designed for any scenario where code reliability and long-term maintainability are the top priorities.

Question 2

What does the Test-Driven Development skill do?

Accepted Answer

This skill enforces a strict Red-Green-Refactor workflow. It prevents Claude from writing production code until a failing test has been written and verified, ensuring all new logic is backed by automated tests.

Question 3

What are the 'Iron Law' requirements of this skill?

Accepted Answer

The core rule is: No production code without a failing test first. If code is written before a test, the skill mandates deleting that code and starting over to ensure the test is actually verifying the behavior correctly.

Question 4

How does this skill improve my development workflow?

Accepted Answer

By forcing a test-first approach, it eliminates 'tests-after' bias, helps discover edge cases early, and prevents regressions. It results in a cleaner architecture where code is only as complex as necessary to pass the requirements.

Question 5

Can this skill help with bug reproduction?

Accepted Answer

Yes. When a bug is found, the skill requires writing a minimal test that reproduces the failure ('Red' phase) before any fix is implemented, ensuring the bug is truly killed and won't return.

Test-Driven Development

Test-Driven Development

Key Features

Use Cases

Key Features

Use Cases