> 18 нояб. 2015 г., в 11:50, Simon Fraser <[email protected]> написал(а): > > There are some well-understood reasons why a test might not exactly match its > reference. One is that the test uses compositing layers to do clipping, but > the reference just clips with drawing, and these are not expected to give a > pixel-perfect match. > > I proposed a way to allow a test to specify a custom tolerance in > https://bugs.webkit.org/show_bug.cgi?id=149828 > <https://bugs.webkit.org/show_bug.cgi?id=149828>. If we had this, it would > allow me to fix 142258 <https://bugs.webkit.org/show_bug.cgi?id=142258> and > 146523 <https://bugs.webkit.org/show_bug.cgi?id=146523>.
Bug 142258 also serves as an example for why we shouldn't do this. Both known reasons for it are actual bugs that needed to be discovered, and need to be fixed. What are the causes for flakiness in bug 146523? - Alexey
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