Testing Gdi+

[Stepa Nick]

Hi!
I`m new in WINE development. I have some tests cases, that works
incorrect in current version of WINE and I want to fix this mistakes.
So, I`m interesting are there some testing systems that compares
bitmap(for example)? I look thru WINE tests,
http://www.winehq.org/docs/winedev-guide/testing and had found only
tests, that compare some variables to constant. I think, that WINE
needs graphics test.
Thanks.