Bug 117035 – [Qt][WK1] Hover tests are flaky on Qt when running multiple tests at once

• Status: RESOLVED
• Resolution: INVALID
• Component: Tools / Tests

[Zoltan Arvai]

On Qt WK1 fast/regions/hover-on-child-parent-different-regions.html failing after r150868.

--- /ramdisk/qt-linux-release/build/layout-test-results/fast/regions/hover-on-child-parent-different-regions-expected.txt
+++ /ramdisk/qt-linux-release/build/layout-test-results/fast/regions/hover-on-child-parent-different-regions-actual.txt
@@ -2,8 +2,8 @@
 
 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
 
-PASS Child hover event processed OK.
-PASS Parent hover event processed OK.
+FAIL Child hover event FAILED to process.
+FAIL Parent hover event FAILED to process.
 PASS successfullyParsed is true
 
 TEST COMPLETE


And other tests related to that revision are flaky:

fast/regions/hover-on-child-in-region.html
fast/regions/hover-in-region-grandparent.html
fast/regions/hover-in-region-parent-skip-inlines-anonymous.html

http://build.webkit.sed.hu/results/x86-64%20Linux%20Qt%20Release/r150964%20%2851391%29/results.html

It seems these test are fine on Qt WK2.

[Radu Stavila]

Created attachment 203562 [details]
Patch

Wasn't able to reproduce the problem on my Qt WK1 environment. I modified the test to overcome a possible issue with the hover check being carried out before the hover event could fire. If this patch will fix the main failing test, I will perform the same change for the other flaky tests.

[WebKit Commit Bot]

Comment on attachment 203562 [details]
Patch

Clearing flags on attachment: 203562

Committed r151104: <http://trac.webkit.org/changeset/151104>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.

[Zoltan Arvai]

fast/regions/hover-on-child-parent-different-regions.html unskipped in http://trac.webkit.org/changeset/151105.

[Csaba Osztrogonác]

Reopen, because it still fails:

--- /ramdisk/qt-linux-64-release/build/layout-test-results/fast/regions/hover-on-child-parent-different-regions-expected.txt
+++ /ramdisk/qt-linux-64-release/build/layout-test-results/fast/regions/hover-on-child-parent-different-regions-actual.txt
@@ -1,4 +1,4 @@
-PASS Child hover event processed OK.
+FAIL Child hover event FAILED to process.
 PASS Parent hover event processed OK.

[Radu Stavila]

Created attachment 203607 [details]
Patch

The hover event seems to be triggered only AFTER the results are checked. Forced a re-layout in an attempt to fix this.

[Radu Stavila]

Created attachment 203611 [details]
Patch

Forced relayout to ensure hover event gets called before checking the results.

[Csaba Osztrogonác]

Something is wrong ... fast/regions/hover-on-child-parent-different-regions.html passes for me locally, but it fails on the bot. (I haven't run all the tests, only this one and then all fast/regions tests) Additionally fast/regions/hover-in-second-region.html fails if I run all fast/regions test, but passes if I run only this one. --> expected: 7xx is red, actual: 7xx is blue

It seems it needs more debugging ... but now I have to go.

[Alexandru Chiculita]

Comment on attachment 203611 [details]
Patch

Let's see if this fixes the problem on the bots.

[WebKit Commit Bot]

Comment on attachment 203611 [details]
Patch

Clearing flags on attachment: 203611

Committed r151121: <http://trac.webkit.org/changeset/151121>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.

[Zoltan Arvai]

Still flaky, fails on 
http://build.webkit.sed.hu/results/x86-64%20Linux%20Qt%20Release/r151168%20%2851497%29/results.html

Skipped again in http://trac.webkit.org/changeset/151171.

[Radu Stavila]

Probably the same issue as https://bugs.webkit.org/show_bug.cgi?id=117338

Looks like the Qt testing environment has some problems when running multiple hover tests in parallel (probably the multiple simultaneous calls to mouseMoveTo interfere with each other).

[Radu Stavila]

*** Bug 117338 has been marked as a duplicate of this bug. ***

[Allan Sandfeld Jensen]

I think part of the problem is that mouse-move events are not flushed in EventSenderQt.

[Jocelyn Turcotte]

=== Bulk closing of Qt bugs ===

If you believe that this bug report is still relevant for a non-Qt port of webkit.org, please re-open it and remove [Qt] from the summary.

If you believe that this is still an important QtWebKit bug, please fill a new report at https://bugreports.qt-project.org and add a link to this issue. See http://qt-project.org/wiki/ReportingBugsInQt for additional guidelines.