[Webkit-unassigned] [Bug 260052] New: [ macOS iOS ] Multiple tests under http/tests/privateClickMeasurement are flaky TEXT failures

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=260052

            Bug ID: 260052
           Summary: [ macOS iOS ] Multiple tests under
                    http/tests/privateClickMeasurement are flaky TEXT
                    failures
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: New Bugs
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ben_schwartz at apple.com
                CC: webkit-bot-watchers-bugzilla at group.apple.com,
                    webkit-bug-importer at group.apple.com

http/tests/privateClickMeasurement/attribution-conversion-through-fetch-keepalive.html
http/tests/privateClickMeasurement/attribution-conversion-through-image-redirect-ephemeral.html
http/tests/privateClickMeasurement/triggering-event-with-attribution-source-through-fetch-keepalive.html
http/tests/privateClickMeasurement/triggering-event-with-attribution-source-through-fetch-keepalive-ephemeral.html

These tests are flaky text failures on wk2, both macOS and iOS. They are grouped into one bug as they all fail with a similar diff (no stored data).

HISTORY:

https://results.webkit.org/?suite=layout-tests&suite=layout-tests&suite=layout-tests&suite=layout-tests&test=http%2Ftests%2FprivateClickMeasurement%2Fattribution-conversion-through-fetch-keepalive.html&test=http%2Ftests%2FprivateClickMeasurement%2Fattribution-conversion-through-image-redirect-ephemeral.html&test=http%2Ftests%2FprivateClickMeasurement%2Ftriggering-event-with-attribution-source-through-fetch-keepalive-ephemeral.html&test=http%2Ftests%2FprivateClickMeasurement%2Ftriggering-event-with-attribution-source-through-fetch-keepalive.html

TEXT DIFF:

 Tests triggering of ephemeral private click measurement attribution with same-site triggering event request.


-Attributed Private Click Measurements:
-WebCore::PrivateClickMeasurement 1
-Source site: 127.0.0.1
-Attribute on site: localhost
-Source ID: 3
-Attribution trigger data: 12
-Attribution priority: 0
-Attribution earliest time to send: Within 24-48 hours
-Destination token: Not set
-Application bundle identifier: testBundleID
+
+No stored Private Click Measurement data.

DIFF URL:

https://build.webkit.org/results/Apple-Monterey-Release-AppleSilicon-WK2-Tests/266777@main%20(10523)/http/tests/privateClickMeasurement/triggering-event-with-attribution-source-through-fetch-keepalive-ephemeral-pretty-diff.html

REPRODUCIBILITY:

I was able to reproduce this bug on macOS Ventura Release ToT running the test as follows:

run-webkit-tests --clobber-old-results --iterations 100 --child-processes=5 -f --verbose http/test/privateClickMeasurement/clear-through-website-data-removal.html http/tests/privateClickMeasurement/triggering-event-with-attribution-source-through-fetch-keepalive-ephemeral.html

NOTES:

I believe this issue may be related to data being cleared after a previous test run (clear-through-website-data-removal.html), since the issue only reproduced when running that test with the affected tests.

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