Bug 235368 - REGRESSION(r288197): [ macOS iOS EWS ] imported/w3c/web-platform-tests/intersection-observer/timestamp.html is a constant text failure
Summary: REGRESSION(r288197): [ macOS iOS EWS ] imported/w3c/web-platform-tests/inters...
Status: RESOLVED FIXED
Alias: None
Product: WebKit
Classification: Unclassified
Component: Layout and Rendering (show other bugs)
Version: WebKit Nightly Build
Hardware: Unspecified Unspecified
: P2 Normal
Assignee: Nobody
URL:
Keywords: InRadar
Depends on:
Blocks:
 
Reported: 2022-01-19 10:24 PST by Robert Jenner
Modified: 2022-01-19 12:27 PST (History)
6 users (show)

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Description Robert Jenner 2022-01-19 10:24:49 PST 
imported/w3c/web-platform-tests/intersection-observer/timestamp.html

is a constant text failure on macOS, iOS, and EWS. 

HISTORY:
https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fintersection-observer%2Ftimestamp.html

DIFF URL:
https://build.webkit.org/results/Apple-Monterey-Release-AppleSilicon-WK2-Tests/r288197%20(1117)/imported/w3c/web-platform-tests/intersection-observer/timestamp-pretty-diff.html

DIFF TEXT:
 PASS Check that timestamps correspond to the to execution context that created the observer.
 PASS First rAF after iframe is loaded.
-PASS Generate notifications.
+FAIL Generate notifications. assert_approx_equals: Notification times are relative to the expected time origins expected 68 +/- 16 but got -38
Comment 1 Radar WebKit Bug Importer 2022-01-19 10:25:10 PST 
<rdar://problem/87778542>
Comment 2 Robert Jenner 2022-01-19 10:47:54 PST 
Was able to reproduce the failure at Monterey ToT using the following test

run-webkit-tests imported/w3c/web-platform-tests/intersection-observer/timestamp.html


Failure was reproducible at r288197, and not at r288196. So it appears that r288197 is a regression that broke this test:

https://trac.webkit.org/changeset/288197/webkit
Comment 3 Robert Jenner 2022-01-19 12:27:07 PST 
Reverted the change that broke the test here:

https://trac.webkit.org/changeset/288229/webkit