[DoubleGlazing]

In my experience the write a new test bit is where it all falls down. It's too easy to skimp out on that when there are deadlines to hit or you are short staffed.

I've seen loads of examples where the tests haven't been updated in years to take account of new functionality. When that happens you aren't really doing TDD anymore.

[yaccz]

That's an issue of bad engineering culture, not TDD.

[majikandy]

That also means they weren’t being run. So you aren’t even doing tests, let alone TDD.