Bug 231103 – [ macOS wk1 ] imported/w3c/web-platform-tests/css/css-multicol/multicol-gap-percentage-001.html is a flaky failure

• Component: New Bugs
• Status: NEW

imported/w3c/web-platform-tests/css/css-multicol/multicol-gap-percentage-001.html

Is flaky failing on macOS wk1.

History: https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fcss%2Fcss-multicol%2Fmulticol-gap-percentage-001.html

Result page: https://build.webkit.org/results/Apple-BigSur-Release-WK1-Tests/r283383%20(5744)/results.html#

Diff:

--- /Volumes/Data/worker/bigsur-release-tests-wk1/build/layout-test-results/imported/w3c/web-platform-tests/css/css-multicol/multicol-gap-percentage-001-expected.txt
+++ /Volumes/Data/worker/bigsur-release-tests-wk1/build/layout-test-results/imported/w3c/web-platform-tests/css/css-multicol/multicol-gap-percentage-001-actual.txt
@@ -2,9 +2,24 @@
 PASS .multicol 1
 PASS .multicol 2
 PASS .multicol 3
-PASS .multicol 4
-PASS .multicol 5
-PASS .multicol 6
+FAIL .multicol 4 assert_equals:
+<div class="multicol inlineBlock" data-expected-width="40" data-expected-height="20">
+  <div data-offset-x="0" data-offset-y="0" data-expected-width="15" data-expected-height="20">X</div>
+  <div data-offset-x="25" data-offset-y="0" data-expected-width="15" data-expected-height="20">X</div>
+</div>
+width expected 40 but got 50
+FAIL .multicol 5 assert_equals:
+<div class="multicol inlineBlock" data-expected-width="240" data-expected-height="40">
+  <div data-offset-x="0" data-offset-y="0" data-expected-width="90" data-expected-height="40">XX X X</div>
+  <div data-offset-x="150" data-offset-y="0" data-expected-width="90" data-expected-height="40">XX X X</div>
+</div>
+width expected 240 but got 300
+FAIL .multicol 6 assert_equals:
+<div class="multicol inlineBlock" data-expected-width="200" data-expected-height="20">
+  <div data-offset-x="0" data-offset-y="0" data-expected-width="75" data-expected-height="20">XXXXX</div>
+  <div data-offset-x="125" data-offset-y="0" data-expected-width="75" data-expected-height="20">XXXXX</div>
+</div>
+width expected 200 but got 250
 PASS .multicol 7
 PASS .multicol 8
 PASS .multicol 9

[Radar WebKit Bug Importer]

<rdar://problem/83782261>

Marked test expectations https://trac.webkit.org/changeset/283405/webkit

I was not able to reproduce the failure locally on BigSur using run-webkit-tests --force --iterations 100 -f --exit-after-n-failures 1 -1 imported/w3c/web-platform-tests/css/css-multicol/multicol-gap-percentage-001.html