Artful Codger "If well tested". As a system tester, I can say that to management, testing is an afterthought, and if deadlines are to be met, it is always testing that suffers. Testers are rarely allowed to do a proper job, because it is too expensive. And management usually cut short testing before it is properly signed off. The exceptions are rare.

Clearly, testing code properly takes as much effort as writing it, but is usually seen as an overhead. And a cause of delay.

There was an old Dilbert cartoon "It's your fault the system is late, you found too many bugs"