Bug 222365 – [ macOS Wk2 ] inspector/dom/attributeModified.html is flakey timing out

• Component: New Bugs
• Status: NEW

[Robert Jenner]

inspector/dom/attributeModified.html

is flakey timing out on macOS in webkit 2. 

HISTORY URL:
https://results.webkit.org/?suite=layout-tests&test=inspector%2Fdom%2FattributeModified.html

DIFF URL:
https://build.webkit.org/results/Apple-BigSur-Release-WK2-Tests/r273383%20(475)/inspector/dom/attributeModified-pretty-diff.html

DIFF TEXT:
--- /Volumes/Data/slave/bigsur-release-tests-wk2/build/layout-test-results/inspector/dom/attributeModified-expected.txt
+++ /Volumes/Data/slave/bigsur-release-tests-wk2/build/layout-test-results/inspector/dom/attributeModified-actual.txt
@@ -1,33 +1,5 @@
-Tests for the DOM.attributeModified event.
+#PID UNRESPONSIVE - WebKitTestRunner (pid 13752)
+FAIL: Timed out waiting for notifyDone to be called
 
-
-== Running test suite: DOM.attributeModified
--- Running test case: DOM.attributeModified.WithNamespace
-Creating test node...
-{
-  "id": "with-namespace",
-  "attribute:existing": "42"
-}
-
-Adding attribute with namespace...
-{
-  "id": "with-namespace",
-  "attribute:existing": "42",
-  "attribute:new": "1"
-}
-
-Replacing attribute with namespace...
-{
-  "id": "with-namespace",
-  "attribute:existing": "42",
-  "attribute:new": "2"
-}
-
-Replacing attribute without namespace...
-{
-  "id": "with-namespace",
-  "attribute:existing": "42",
-  "attribute:new": "3"
-}
-
-
+#EOF
+#EOF

[Radar WebKit Bug Importer]

<rdar://problem/74699936>

[Robert Jenner]

Attempted to reproduce the failure on multiple builds, multiple different ways, and I could not get it to timeout. So it appears to be very flakey. It also appears to have been occurring close to when the test starting running in BigSur, as the first recorded timeout was at r271078.

[Robert Jenner]

Created attachment 421426 [details]
Patch

[Truitt Savell]

Comment on attachment 421426 [details]
Patch

Clearing flags on attachment: 421426

Committed r273408 (234519@main): <https://commits.webkit.org/234519@main>