tdd

TDD Cycle (MANDATORY)

+-----------------------------------------+
|  RED -> GREEN -> REFACTOR               |
|     ^                        |          |
|     +------------------------+          |
+-----------------------------------------+

The question is NOT "should I write tests?" but "what tests do I need?"

The Three Laws of TDD

1. No production code until you have a failing test
2. No more test than necessary to fail
3. No more code than necessary to pass