Bug 280353 – [ Sonoma+ ] 2x TestWebKitAPI.CSSViewportUnits* (api-tests) are flaky failures

• Component: CSS
• Status: NEW

[Dawn Morningstar]

TestWebKitAPI.CSSViewportUnits.MaximumViewportInsetWithTopContentInset
TestWebKitAPI.CSSViewportUnits.TopContentInset
These are both flaky failures on all queues after Sonoma.

HISTORY:
https://results.webkit.org/?suite=api-tests&suite=api-tests&test=TestWebKitAPI.CSSViewportUnits.MaximumViewportInsetWithTopContentInset&test=TestWebKitAPI.CSSViewportUnits.TopContentInset

TEST-RUN:
https://build.webkit.org/#/builders/1230/builds/60

STDIO:
https://build.webkit.org/#/builders/1230/builds/60/steps/19/logs/stdio

Failure:
TestWebKitAPI.CSSViewportUnits.MaximumViewportInsetWithTopContentInset
        2024-09-25 12:10:49.115 TestWebKitAPI[78151:8570659] +[IMKClient subclass]: chose IMKClient_Legacy
        
        /Volumes/Data/worker/Apple-Sequoia-Release-Build/build/Tools/TestWebKitAPI/Tests/WebKitCocoa/CSSViewportUnits.mm:914
        Expected equality of these values:
          490
          viewportUnitLength(webView, @"vh")
            Which is: 471.98438
        
        
        
        /Volumes/Data/worker/Apple-Sequoia-Release-Build/build/Tools/TestWebKitAPI/Tests/WebKitCocoa/CSSViewportUnits.mm:916
        Expected equality of these values:
          490
          viewportUnitLength(webView, @"vmax")
            Which is: 471.98438
        
        
        
        /Volumes/Data/worker/Apple-Sequoia-Release-Build/build/Tools/TestWebKitAPI/Tests/WebKitCocoa/CSSViewportUnits.mm:917
        Expected equality of these values:
          490
          viewportUnitLength(webView, @"vb")
            Which is: 471.98438
        
        
        
        /Volumes/Data/worker/Apple-Sequoia-Release-Build/build/Tools/TestWebKitAPI/Tests/WebKitCocoa/CSSViewportUnits.mm:938
        Expected equality of these values:
          fixedHeight
            Which is: 490
          viewportUnitLength(webView, @"dvh")
            Which is: 471.98438
        
        
        
        /Volumes/Data/worker/Apple-Sequoia-Release-Build/build/Tools/TestWebKitAPI/Tests/WebKitCocoa/CSSViewportUnits.mm:940
        Expected equality of these values:
          fixedHeight
            Which is: 490
          viewportUnitLength(webView, @"dvmax")
            Which is: 471.98438
        
        
        
        /Volumes/Data/worker/Apple-Sequoia-Release-Build/build/Tools/TestWebKitAPI/Tests/WebKitCocoa/CSSViewportUnits.mm:941
        Expected equality of these values:
          fixedHeight
            Which is: 490
          viewportUnitLength(webView, @"dvb")
            Which is: 471.98438

[Radar WebKit Bug Importer]

<rdar://problem/136706717>

[Dawn Morningstar]

Pull request: https://github.com/WebKit/WebKit/pull/34248

[EWS]

Test gardening commit 284245@main (1b40511bbccc): <https://commits.webkit.org/284245@main>

Reviewed commits have been landed. Closing PR #34248 and removing active labels.