Fix FileUpload exceptions tests
Fix FileUpload exceptions tests

It now requires exception to be thrown for test not to fail.

Fixes testNoFileNameTooBig which was succeeding even though it was wrong.

sopvop/snap-core,snapframework/snap-core,sopvop/snap-core,23Skidoo/snap-core,23Skidoo/snap-core,snapframework/snap-core,snapframework/snap-core,23Skidoo/snap-core,sopvop/snap-core