unknown device issues after running winetest

[Alexander Morozov]

> I just had a check for the testRegisterAndGetDetail test on Vista (dunno
> about the other tests and platforms yet).
>
> I added the SetupDiRemoveDevice (as was suggested by Alexander) at the end
> of this test.
>
> On a clean registry this works out fine (one DeviceClasses key is left but
> that one can be deleted without having to fiddle with permissions).
>
> When I however first run the old tests (with leftovers in the registry) and
> then run the new test again the registry keys are still present.
> When I do the SetupDiRemoveDevice twice at the end of
> testRegisterAndGetDetail the registry keys get deleted again (not that
> DeviceClasses key again).
>
> So what would be a good approach? Just doing 2 SetupDiRemoveDevice's at the
> end to make sure old stuff is gone as well?
> Or doing one, check if the Enum keys is still present and then do a second
> SetupDiRemoveDevice (with a trace message for clarity)?

I think the second way is better.
May be a number of Enum keys is equal a quantity of doing old test?