Bug 297121 – REGRESSION(298350@main): [ macOS wk2 ] fast/page-color-sampling/color-sampling-fixed-ancestor-with-relative-container.html is a constant failure

• Status: RESOLVED
• Resolution: FIXED
• Component: WebKit Misc.

[Bryan Medina]

fast/page-color-sampling/color-sampling-fixed-ancestor-with-relative-container.htm

is a constant failure on macOS wk2.

HISTORY:
https://results.webkit.org/?suite=layout-tests&test=fast%2Fpage-color-sampling%2Fcolor-sampling-fixed-ancestor-with-relative-container.html

TEXT DIFF:
--- /Volumes/Data/worker/Apple-Sequoia-Release-WK2-Tests/build/layout-test-results/fast/page-color-sampling/color-sampling-fixed-ancestor-with-relative-container-expected.txt
+++ /Volumes/Data/worker/Apple-Sequoia-Release-WK2-Tests/build/layout-test-results/fast/page-color-sampling/color-sampling-fixed-ancestor-with-relative-container-actual.txt
@@ -1,5 +1,6 @@
-PASS edgeColors.top is "rgb(212, 214, 185)"
+FAIL edgeColors.top should be rgb(212, 214, 185) (of type string). Was null (of type object).
 PASS successfullyParsed is true
+Some tests failed.
 
 TEST COMPLETE
 

TEXT DIFF URL:
https://build.webkit.org/results/Apple-Sequoia-Release-WK2-Tests/298392@main%20(3554)/fast/page-color-sampling/color-sampling-fixed-ancestor-with-relative-container-diff.txt

[Radar WebKit Bug Importer]

<rdar://problem/157857418>

[Bryan Medina]

I was able to reproduce the text failure locally on my device running macOS Sequoia arm64 Release ToT using the following command:

run-webkit-tests fast/page-color-sampling/color-sampling-fixed-ancestor-with-relative-container.html --iterations=10

[Bryan Medina]

Referring to the history, it is shown that the tests were failing somewhere between 298349@main and 298352@main. Using reproduction steps above, I found that the tests were passing at 298350@main, but failed at 298350@main. At this time, I believe that the regression point is 298350@main.

[Bryan Medina]

Correction: they were passing at 298349@main, but failed at 298350@main.

[EWS]

Test gardening commit 298404@main (52de8a87bc14): <https://commits.webkit.org/298404@main>

Reviewed commits have been landed. Closing PR #49119 and removing active labels.

[Wenson Hsieh]

Pull request: https://github.com/WebKit/WebKit/pull/49300

[EWS]

Committed 298601@main (54a1ffd066b4): <https://commits.webkit.org/298601@main>

Reviewed commits have been landed. Closing PR #49300 and removing active labels.

[Alexey Proskuryakov]

I wonder why EWS didn't catch this.