[Webkit-unassigned] [Bug 198200] New: ImageOnly reference tests may have race condition if the test (or it's expected result) resizes the window

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Thu May 23 16:25:00 PDT 2019


https://bugs.webkit.org/show_bug.cgi?id=198200

            Bug ID: 198200
           Summary: ImageOnly reference tests may have race condition if
                    the test (or it's expected result) resizes the window
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Tools / Tests
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: drousso at apple.com

<https://trac.webkit.org/r244353> caused fast/css/sticky/sticky-left-percentage.html to start failing (ImageOnlyFailing) <https://webkit.org/b/198195>.

```
Error: test and reference images have different sizes. Test image is 800x700, reference image is 800x600
ImageDiff crashed
```

I think this may be a problem with the timing of when the image snapshots are taken, as fast/css/sticky/sticky-left-percentage.html involves resizing the window before the test ends (adds an event listener for "load").

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