The testing rules I code by: - will someone else be touching the code? If yes then I TDD - Am I likely to be touching the code six months from now? If yes the

The testing rules I code by: - will someone else be touching the code? If yes then I TDD - Am I likely to be touching the code six months from now? If yes then I at least document with tests. - Is it a crucial piece of code who's specs I want documented? If yes then I document with tests.