Delete all doesn't soft delete

I'm not sure if this is expected behavior, but it certainly caught me off guard. I started to look into how to fix it, but I'm not that familiar with AR.
Ok. I would rather it be left failing if it was failing before hand. It's likely that a change in Rails made this happen, and so if that's the case then a failing test indicating that Something's Not Right(tm) is better than wilful ignorance.