Bug 268406 – REGRESSION (273266@main?): [ macOS wk2 ] transitions/flex-transitions.html is a flaky failure

• Status: RESOLVED
• Resolution: FIXED
• Component: New Bugs

[Marta Darbinyan]

Description:
transitions/flex-transitions.html 

Is a flaky failure on macOS ToT. The test expectation was removed in 273266@main. The test was constantly failing before and after the commit it's still failing but with less frequency. 

This issue can be reproduced by using the command: 
run-webkit-tests --root  --exit-after-n-failures 1 --debug <test>

History:
https://results.webkit.org/?suite=layout-tests&test=transitions%2Fclip-path-transitions.html

Diff Log:
-PASS - "flex" property for "row1" element at 0.2s saw something close to: 140,0,0
-PASS - "flex" property for "column1" element at 0.2s saw something close to: 80,0,40
+FAIL - "flex" property for "row1" element at 0.2s expected: 140,0,0 but saw: 127.4000015258789,0,0
+FAIL - "flex" property for "column1" element at 0.2s expected: 80,0,40 but saw: 86.30000305175781,0,27.399999618530273
 PASS - "flex" property for "negative1" element at 0.2s saw something close to: 100,100,60
 PASS - "flex" property for "no-flex1" element at 0.2s saw something close to: 80,0,0
 PASS - "flex" property for "row1" element at 0.8s saw something close to: 260,0,0

Link:
https://build.webkit.org/results/Apple-Sonoma-Release-WK2-Tests/273742@main%20(1487)/transitions/flex-transitions-pretty-diff.html

[Radar WebKit Bug Importer]

<rdar://problem/121954966>

[Marta Darbinyan]

Updated history link: https://results.webkit.org/?suite=layout-tests&test=transitions%2Fflex-transitions.html

[EWS]

Test gardening commit 273787@main (106249cea062): <https://commits.webkit.org/273787@main>

Reviewed commits have been landed. Closing PR #23535 and removing active labels.

[Antoine Quint]

I can't reproduce the flakiness locally with 100 iterations in debug:

run-webkit-tests --debug --exit-after-n-failures 1 --iterations 100 --debug transitions/flex-transitions.html

[Alexey Proskuryakov]

Could be CPU load dependent, can you reproduce if you run multiple in parallel (--fully-parallel)?

[Antoine Quint]

Pull request: https://github.com/WebKit/WebKit/pull/26006

[EWS]

Committed 276249@main (e31e176abdf0): <https://commits.webkit.org/276249@main>

Reviewed commits have been landed. Closing PR #26006 and removing active labels.