[Webkit-unassigned] [Bug 139314] New: [iOS] DumpRenderTree produces many reference test mismatches

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=139314

            Bug ID: 139314
           Summary: [iOS] DumpRenderTree produces many reference test
                    mismatches
    Classification: Unclassified
           Product: WebKit
           Version: 528+ (Nightly build)
          Hardware: iOS
                OS: iOS 8.1
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Tools / Tests
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: dbates at webkit.org

Many reference tests fail due to a scale factor mismatch in the snapshot of the test and the snapshot of its expected result. You can see such mismatches by using run-webkit-tests to run the following set of tests in the iOS Simulator with --fully-parallel, --child-processes=3, --no-retry-failures, --no-sample-on-timeout (*): LayoutTests/css2.1/20110323/at-import-001.htm, LayoutTests/css2.1/20110323/at-import-002.htm, LayoutTests/css2.1/20110323/at-import-003.htm, and LayoutTests/css2.1/20110323/at-import-004.htm.

(*) Pass these tests as command line arguments of a single run-webkit-tests run. That is, run something of the form: Tools/Scripts/run-webkit-tests --ios-sim --fully-parallel --child-processes=3 --no-retry-failures --no-sample-on-timeout ... LayoutTests/css2.1/20110323/at-import-001.htm LayoutTests/css2.1/20110323/at-import-002.htm LayoutTests/css2.1/20110323/at-import-003.htm LayoutTests/css2.1/20110323/at-import-004.htm.

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