[Webkit-unassigned] [Bug 161310] New: Test infrastructure should allow to filter out text output before doing a comparison with the baseline

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=161310

            Bug ID: 161310
           Summary: Test infrastructure should allow to filter out text
                    output before doing a comparison with the baseline
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebCore Misc.
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: youennf at gmail.com

As illustrated in bug 160546, some tests may be flaky due to one or two lines in the text output that always change run after run.
Sometimes the test can be corrected, sometimes it cannot.
It would be good if the test infrastructure could filter out these lines before doing the baseline comparison.
This could be triggered for instance with a new expectation in LayoutTests/TestExpectations.

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