The following commits neglected to amend
tst_QImageReader::supportsOption() with the ImageOption enumerators
they added to QImageIOHandler:
- c0ba249a48
- 163af2cf53
- ba323b04cd
Fix first and foremost by adding the missing ImageOption::ImageFormat
to the list of PNG-supported formats (which, curiously enough, predates
the public history and therefore the above three commits), and second,
by rewriting the whole test function to enable -Wswitch, so further
additions are less likely to be forgotten.
Pick-to: 6.6 6.5 6.2 5.15
Change-Id: I102121b2c8a9067864b8ade2ebe2650be6fb6010
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
Reviewed-by: Ivan Komissarov <ABBAPOH@gmail.com>