Bug 254237

Summary:	[ Ventura Release arm64 ] TestWebKitAPI.FullscreenTouchSecheuristic.TapOnceVsTapTwice is a flaky failure
Product:	WebKit	Reporter:	Robert Jenner <jenner>
Component:	Tools / Tests	Assignee:	Jer Noble <jer.noble>
Status:	NEW ---
Severity:	Normal	CC:	jer.noble, webkit-bot-watchers-bugzilla, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified
See Also:	https://bugs.webkit.org/show_bug.cgi?id=200446

Description Robert Jenner 2023-03-21 15:48:28 PDT

TestWebKitAPI.FullscreenTouchSecheuristic.TapOnceVsTapTwice


is a flaky failure that only appears to impact Ventura Release on Apple Silicon.

HISTORY:
https://results.webkit.org/?suite=api-tests&test=TestWebKitAPI.FullscreenTouchSecheuristic.TapOnceVsTapTwice

The history appears to indicate that this fails more than it passes. But it is only impacting that one single queue. Below is the failure from the STDIO:

        /Volumes/Data/worker/Apple-Ventura-Release-Build/build/Tools/TestWebKitAPI/Tests/ios/FullscreenTouchSecheuristicTests.cpp:83
        Expected equality of these values:
          twiceScore
            Which is: nan
          0

Comment 1 Radar WebKit Bug Importer 2023-03-21 15:48:44 PDT

<rdar://problem/107025916>

Comment 2 Robert Jenner 2023-03-21 15:53:54 PDT

I was able to reproduce this API-Test failure at Ventura Release ToT running the test as follows:


run-api-tests --no-build --release --verbose TestWebKitAPI.FullscreenTouchSecheuristic.TapOnceVsTapTwice --iterations 10

Comment 3 Robert Jenner 2023-03-21 16:23:49 PDT

Starting on Jer who introduced the test at: 

https://commits.webkit.org/214237@main

I'm not certain if this test was disabled for arm64 Release before and got re-enabled inadvertently, but it appears to have started running on Ventura Release arm64 around 260731@main. It failed on its first test run and has continued to fail more often than it passes. But only on the Ventura Release arm64 queue.

Comment 4 Ryan Haddad 2023-05-22 15:37:17 PDT

This test is now passing on Ventura bots but failing on Monterey.