[Webkit-unassigned] [Bug 87175] Reftests can't have platform specific results

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=87175





--- Comment #2 from Levi Weintraub <leviw at chromium.org>  2012-05-24 10:13:54 PST ---
(In reply to comment #1)
> Is this something that needs to be supported? This seems like the whole idea of reftests.
> 
> Perhaps one case where this is needed is when a feature is not implemented or disabled on some platforms, yet we don't want to disable the test for some reason.

This is precisely the case. We ran into this issue when enabling sub-pixel layout on Chromium. That feature can lead to contents of a page shifting by several pixels. Since the actual layout of the reference vs the test often differ, it can be extremely difficult to tweak the expectations to be identical to the test with both the feature enabled and disabled.

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