Bug 299322 – REGRESSION(300277@main): [macOS] imported/w3c/web-platform-tests/uievents/mouse/mouse_boundary_events_after_reappending_last_over_target.tentative.html is consistently failing

• Component: New Bugs
• Status: RESOLVED FIXED

[Marta Darbinyan]

The following test is failing very frequently on macOS after the change 300277@main

imported/w3c/web-platform-tests/uievents/mouse/mouse_boundary_events_after_reappending_last_over_target.tentative.html

 FAIL After re-appending the last over element to outside the deepest mouseenter target at mouseover, mouse boundary events should be fired only on the element under the cursor assert_equals: expected "mouseover@div#child, mouseenter@body, mouseenter@div#grandparent, mouseenter@div#parent, mouseenter@div#child, mousemove@div#child, mouseover@div#parent" but got "mouseover@div#child, mouseenter@body, mouseenter@div#grandparent, mouseenter@div#parent, mouseenter@div#child, mousemove@div#child"
 PASS After re-appending the last over element to the deepest mouseenter target without the original parent at mouseover, mouse boundary events should not be fired
 FAIL After re-appending the last over element to outside the deepest mouseenter target (but keeps under the cursor) after mouseover, mouse boundary events should be fired on it again to correct the following mouseleave event targets assert_equals: expected "mouseover@div#child, mouseenter@body, mouseenter@div#grandparent, mouseenter@div#parent, mouseenter@div#child, mousemove@div#child, mouseleave@div#parent, mouseover@div#child, mouseenter@div#child" but got "mouseover@div#child, mouseenter@body, mouseenter@div#grandparent, mouseenter@div#parent, mouseenter@div#child, mousemove@div#child"
-FAIL After re-appending the last over element to outside the deepest mouseenter target after mouseover, mouse boundary events should be fired only on the element under the cursor assert_equals: expected "mouseover@div#child, mouseenter@body, mouseenter@div#grandparent, mouseenter@div#parent, mouseenter@div#child, mousemove@div#child, mouseover@div#parent" but got "mouseover@div#child, mouseenter@body, mouseenter@div#grandparent, mouseenter@div#parent, mouseenter@div#child, mousemove@div#child, mouseover@div#parent, mouseenter@body, mouseenter@div#grandparent, mouseenter@div#parent"
+FAIL After re-appending the last over element to outside the deepest mouseenter target after mouseover, mouse boundary events should be fired only on the element under the cursor assert_equals: expected "mouseover@div#child, mouseenter@body, mouseenter@div#grandparent, mouseenter@div#parent, mouseenter@div#child, mousemove@div#child, mouseover@div#parent" but got "mouseover@div#child, mouseenter@body, mouseenter@div#grandparent, mouseenter@div#parent, mouseenter@div#child, mousemove@div#child"
 PASS After re-appending the last over element to the deepest mouseenter target without the original parent after mouseover, mouse boundary events should not be fired
 PASS After removing and re-appending the last over element with flushing layout after mouseover, mouse boundary events should not be fired
 FAIL After removing after mouseover and re-appending the last over element at next animation frame, mouse boundary events should be fired assert_equals: expected "mouseover@div#child, mouseenter@body, mouseenter@div#grandparent, mouseenter@div#parent, mouseenter@div#child, mousemove@div#child, mouseover@div#parent, mouseout@div#parent, mouseover@div#child, mouseenter@div#child" but got "mouseover@div#child, mouseenter@body, mouseenter@div#grandparent, mouseenter@div#parent, mouseenter@div#child, mousemove@div#child"

Test history:
https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fuievents%2Fmouse%2Fmouse_boundary_events_after_reappending_last_over_target.tentative.html


Test results:
https://ews-build.webkit.org/#/builders/122/builds/37215

[Radar WebKit Bug Importer]

<rdar://problem/161124683>

[Marta Darbinyan]

Pull request: https://github.com/WebKit/WebKit/pull/51154

[EWS]

Committed 300404@main (89d6134568f3): <https://commits.webkit.org/300404@main>

Reviewed commits have been landed. Closing PR #51154 and removing active labels.

[EWS]

Test gardening commit 300424@main (4219938cf9d9): <https://commits.webkit.org/300424@main>

Reviewed commits have been landed. Closing PR #51213 and removing active labels.