Bug 232316 - [ macOS ] imported/w3c/web-platform-tests/hr-time/basic.html is a flaky failure
Summary: [ macOS ] imported/w3c/web-platform-tests/hr-time/basic.html is a flaky failure
Status: NEW
Alias: None
Product: WebKit
Classification: Unclassified
Component: New Bugs (show other bugs)
Version: WebKit Nightly Build
Hardware: Unspecified Unspecified
: P2 Normal
Assignee: Nobody
URL:
Keywords: InRadar
Depends on:
Blocks:
 
Reported: 2021-10-26 10:25 PDT by ayumi_kojima
Modified: 2021-10-26 11:44 PDT (History)
3 users (show)

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Description ayumi_kojima 2021-10-26 10:25:29 PDT 
imported/w3c/web-platform-tests/hr-time/basic.html

Is a flaky failure on macOS.

History: https://results.webkit.org/?suite=layout-tests&test=fast%2Fforms%2Fform-submission-crash-3.html

Result page: https://build.webkit.org/results/Apple-BigSur-Debug-AppleSilicon-WK1-Tests/r284863%20(4244)/results.html

Diff:

--- /Volumes/Data/worker/bigsur-debug-applesilicon-tests-wk1/build/layout-test-results/imported/w3c/web-platform-tests/hr-time/basic-expected.txt
+++ /Volumes/Data/worker/bigsur-debug-applesilicon-tests-wk1/build/layout-test-results/imported/w3c/web-platform-tests/hr-time/basic-actual.txt
@@ -7,5 +7,5 @@
 PASS High Resolution Time extension to the Performance interface
 PASS window.performance.now() function
 PASS window.performance.now() returns a number
-PASS High resolution time has approximately the right relative magnitude
+FAIL High resolution time has approximately the right relative magnitude assert_approx_equals: High resolution time value increased by approximately the same amount as time from date object expected 2057 +/- 30 but got 2015
Comment 1 Radar WebKit Bug Importer 2021-10-26 10:25:49 PDT 
<rdar://problem/84669769>
Comment 3 ayumi_kojima 2021-10-26 11:33:58 PDT 
I was not able to reproduce the failure locally using run-webkit-tests debugToTest -1 --iterations 500 --exit-after-n-failures 1 imported/w3c/web-platform-tests/hr-time/basic.html
Comment 4 ayumi_kojima 2021-10-26 11:38:18 PDT 
It looks like the test has been flaky for at least 2 month with failing at this build https://build.webkit.org/#/builders/33/builds/3954
Comment 5 ayumi_kojima 2021-10-26 11:44:51 PDT 
Marked test expectations https://trac.webkit.org/changeset/284885/webkit