[Webkit-unassigned] [Bug 196633] New: [Mac WK2 iOS Sim] Layout Test imported/w3c/web-platform-tests/webrtc/RTCRtpReceiver-getSynchronizationSources.https.html is a flaky failure

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Thu Apr 4 16:20:42 PDT 2019


https://bugs.webkit.org/show_bug.cgi?id=196633

            Bug ID: 196633
           Summary: [Mac WK2 iOS Sim] Layout Test
                    imported/w3c/web-platform-tests/webrtc/RTCRtpReceiver-
                    getSynchronizationSources.https.html is a flaky
                    failure
           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: sroberts at apple.com
                CC: lforschler at apple.com

The following layout test is flaky on Mac WK2 Release and Debug, iOS Simulator Release and Debug

imported/w3c/web-platform-tests/webrtc/RTCRtpReceiver-getSynchronizationSources.https.html

Probable cause:

Test was imported in https://trac.webkit.org/changeset/243041/webkit and has been a flaky failure and timeout on High Sierra. Also is a flaky failure on Mojave and iOS Simulator Release and Debug.

Reproducible with:

run-webkit-tests imported/w3c/web-platform-tests/webrtc/RTCRtpReceiver-getSynchronizationSources.https.html --iterations 25 -f

Failed twice, fails a lot more consistently in Debug.

Flakiness Dashboard:

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=imported%2Fw3c%2Fweb-platform-tests%2Fwebrtc%2FRTCRtpReceiver-getSynchronizationSources.https.html

Diff:

--- /Volumes/Data/slave/mojave-debug-tests-wk2/build/layout-test-results/imported/w3c/web-platform-tests/webrtc/RTCRtpReceiver-getSynchronizationSources.https-expected.txt
+++ /Volumes/Data/slave/mojave-debug-tests-wk2/build/layout-test-results/imported/w3c/web-platform-tests/webrtc/RTCRtpReceiver-getSynchronizationSources.https-actual.txt
@@ -9,6 +9,6 @@
 PASS [video] getSynchronizationSources() does not contain SSRCs older than 10 seconds 
 FAIL [video] RTCRtpSynchronizationSource.timestamp is comparable to performance.timeOrigin + performance.now() assert_true: expected true got false
 PASS [video] RTCRtpSynchronizationSource.source is a number 
-FAIL [audio-only] RTCRtpSynchronizationSource.audioLevel is a number [0, 1] assert_less_than_equal: expected a number less than or equal to 1 but got 23
+FAIL [audio-only] RTCRtpSynchronizationSource.audioLevel is a number [0, 1] assert_less_than_equal: expected a number less than or equal to 1 but got 9
 FAIL [audio-only] RTCRtpSynchronizationSource.voiceActivityFlag is a boolean assert_equals: expected "boolean" but got "undefined"

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