The test used to trigger a lot of QWARN messages; these are clearly
intended, so tell QTest to expect them, so that we get an error here
if those warnings ever don't show up.
Incidentally tidy up a comment and convert a != verify to a
QCOMPARE_NE(), since it's now available to do that job.
Change-Id: I83e225c37abe8446dac06ebe4e75258cb87b71b0
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
bed8663a0b