Testing is an integral part of every development step, not something you tack on the end.
Good thing you know that we don't do unit testing... otherwise where we we learn that we were doing it wrong? Are you also going to assuming we don't do everything else I don't mention? I re-read my post and I can't find any part of it that could be used to infer that unit testing isn't part of our process.
Also, if you leave code review until after the product has passed all testing phases, then you have two problems. First, if you change anything after the code review, then you're not done testing, so the only way to do code review last is to magically have code that always zooms through code review with no comments. Second, you'll never get approval to fix more than a trivial amount of code if the pointy-haired boss knows the customer has already signed off; that's the classic path to being forced support bad code.