1848423 - Intermittent macOS browser/base/content/test/fullscreen/browser_fullscreen_warning.js | Test timed out

Status: NEW

(Core :: DOM: Core & HTML, defect, P5)

Description

[Treeherder Bug Filer]

Filed by: ncsoregi [at] mozilla.com
Parsed log: https://treeherder.mozilla.org/logviewer?job_id=425710262&repo=autoland
Full log: https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/Ml9SXi7gQtC0miUQXfGPOA/runs/0/artifacts/public/logs/live_backing.log

---

[task 2023-08-11T17:56:07.729Z] 17:56:07     INFO - TEST-PASS | browser/base/content/test/fullscreen/browser_fullscreen_warning.js | Wait for ontop state - check onscreen attribute. - 
[task 2023-08-11T17:56:07.729Z] 17:56:07     INFO - Wait for fullscreen warning timed out again.
[task 2023-08-11T17:56:07.729Z] 17:56:07     INFO - Buffered messages finished
[task 2023-08-11T17:56:07.730Z] 17:56:07     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/fullscreen/browser_fullscreen_warning.js | Test timed out - 
[task 2023-08-11T17:56:07.730Z] 17:56:07     INFO - GECKO(1443) | MEMORY STAT | vsize 8045MB | residentFast 380MB | heapAllocated 135MB
[task 2023-08-11T17:56:07.730Z] 17:56:07     INFO - TEST-OK | browser/base/content/test/fullscreen/browser_fullscreen_warning.js | took 96463ms
[task 2023-08-11T17:56:07.731Z] 17:56:07     INFO - Not taking screenshot here: see the one that was previously logged
[task 2023-08-11T17:56:07.731Z] 17:56:07     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/fullscreen/browser_fullscreen_warning.js | Found a tab after previous test timed out: https://example.com/ - 
[task 2023-08-11T17:56:07.731Z] 17:56:07     INFO - GECKO(1443) | [Child 1452: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 10fc54c00 == 1 [pid = 1452] [id = 11]
[task 2023-08-11T17:56:07.732Z] 17:56:07     INFO - GECKO(1443) | [Child 1452: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 1 (10c83e3e0) [pid = 1452] [serial = 27] [outer = 0]
[task 2023-08-11T17:56:07.732Z] 17:56:07     INFO - GECKO(1443) | [Child 1452: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 2 (10fc55400) [pid = 1452] [serial = 28] [outer = 10c83e3e0]
[task 2023-08-11T17:56:07.732Z] 17:56:07     INFO - checking window state
[task 2023-08-11T17:56:07.733Z] 17:56:07     INFO - Not taking screenshot here: see the one that was previously logged
[task 2023-08-11T17:56:07.734Z] 17:56:07     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/fullscreen/browser_fullscreen_warning.js | Uncaught exception received from previously timed out test bound test_fullscreen_reappear - at chrome://mochitests/content/browser/browser/base/content/test/fullscreen/browser_fullscreen_warning.js:8 - ReferenceError: is is not defined
[task 2023-08-11T17:56:07.734Z] 17:56:07     INFO - Stack trace:
[task 2023-08-11T17:56:07.734Z] 17:56:07     INFO - checkWarningState/<@chrome://mochitests/content/browser/browser/base/content/test/fullscreen/browser_fullscreen_warning.js:8:5
[task 2023-08-11T17:56:07.734Z] 17:56:07     INFO - checkWarningState@chrome://mochitests/content/browser/browser/base/content/test/fullscreen/browser_fullscreen_warning.js:7:35
[task 2023-08-11T17:56:07.734Z] 17:56:07     INFO - waitForWarningState@chrome://mochitests/content/browser/browser/base/content/test/fullscreen/browser_fullscreen_warning.js:18:20
[task 2023-08-11T17:56:07.735Z] 17:56:07     INFO - async*test_fullscreen_reappear/<@chrome://mochitests/content/browser/browser/base/content/test/fullscreen/browser_fullscreen_warning.js:223:11
[task 2023-08-11T17:56:07.735Z] 17:56:07     INFO - async*withNewTab@resource://testing-common/BrowserTestUtils.sys.mjs:146:22
[task 2023-08-11T17:56:07.735Z] 17:56:07     INFO - async*test_fullscreen_reappear@chrome://mochitests/content/browser/browser/base/content/test/fullscreen/browser_fullscreen_warning.js:200:26
[task 2023-08-11T17:56:07.735Z] 17:56:07     INFO - handleTask@chrome://mochikit/content/browser-test.js:1131:26
[task 2023-08-11T17:56:07.735Z] 17:56:07     INFO - _runTaskBasedTest@chrome://mochikit/content/browser-test.js:1203:18
[task 2023-08-11T17:56:07.735Z] 17:56:07     INFO - async*Tester_execTest@chrome://mochikit/content/browser-test.js:1345:14
[task 2023-08-11T17:56:07.735Z] 17:56:07     INFO - nextTest/<@chrome://mochikit/content/browser-test.js:1120:14
[task 2023-08-11T17:56:07.735Z] 17:56:07     INFO - SimpleTest.waitForFocus/<@chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:1056:13

Comment 1

[Natalia Csoregi [:nataliaCs]]

It has a 7 out of 11 failure rate upon retriggers: link

This has actually started with Bug 1833363 - as the occurrence suddenly increases: https://treeherder.mozilla.org/intermittent-failures/bugdetails?startday=2023-08-06&endday=2023-08-11&tree=trunk&failurehash=all&bug=1837474

As this bug has a different regressor as the already existing intermittent Bug 1837474, we would prefer to keep the tracking separate.
Edgar, can you take a look please?
Thank you.

Comment 2

[BugBot [:suhaib / :marco/ :calixte]]

The Bugbug bot thinks this bug should belong to the 'Core::DOM: Core & HTML' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Comment 5

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/84f8c9d9d355
Temporarily disable browser_fullscreen_warning.js on macOS until a fix is in place. a=test-only

Comment 6

[Cosmin Sabou [:CosminS]]

I've temporarily disabled this until a fix is in place due to the fact that it's almost permafailing on macOS. Please re-enable when it's fixed. Thank you.

Comment 7

[Narcis Beleuzu [:NarcisB]]

https://hg.mozilla.org/mozilla-central/rev/84f8c9d9d355

Comment 8

[Edgar Chen [:edgar]]

After checking the logs, there are two cases,

• The fullscreen notification isn't shown after focus switches back to the fullscreen window, leading to a timeout at this location. It's possible that the focus switching takes more than 3 seconds in the CI environment, so the notification has already hidden automatically, and it doesn't reshow again. Increasing the value of full-screen-api.warning.timeout while running the test should help.
• The fullscreen notification isn't hidden automatically, causing the test to timeout at this location. I checked the screenshot captured by CI, and the fullscreen window isn't the activated one. It seems like focus is moved to another window while running the test, so the fullscreen notification never times out. AFAIK, on Mac, focus might not move back to the previously focused window after closing the currently focused window, I have ran into such issue before. Explicitly focusing the test window should help.

Comment 9

[Intermittent Failures Robot]

57 failures in 3341 pushes (0.017 failures/push) were associated with this bug in the last 7 days.

This is the #15 most frequent failure this week.

** This failure happened more than 30 times this week! Resolving this bug is a high priority. **

** Try to resolve this bug as soon as possible. If unresolved for 2 weeks, the affected test(s) may be disabled. **

Repository breakdown:

• autoland: 48
• mozilla-central: 8
• mozilla-beta: 1

Platform and build breakdown:

• macosx1015-64-qr: 46
  • debug: 36
  • opt: 10
• macosx1015-64-shippable-qr: 10
  • opt: 10
• windows11-64-2009-asan-qr: 1
  • opt: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1848423&startday=2023-08-07&endday=2023-08-13&tree=all

Comment 10

[Edgar Chen [:edgar]]

https://treeherder.mozilla.org/jobs?repo=try&revision=3a00aa6fe662ad38754ed237f70f9ec50cb9668e

Comment 11

[Pulsebot]

https://hg.mozilla.org/releases/mozilla-beta/rev/59e68d85f647

Comment 12

[Pulsebot]

https://hg.mozilla.org/releases/mozilla-esr115/rev/eb9e1b06ad1a

Comment 13

[Edgar Chen [:edgar]]

(In reply to Edgar Chen [:edgar] from comment #8)

Explicitly focusing the test window should help.

It turns out it still doesn't work, I would need to investigate more.

Comment 14

[Intermittent Failures Robot]

1 failures in 3076 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-beta: 1

Platform and build breakdown:

• windows11-64-2009-qr: 1
  • debug: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1848423&startday=2023-08-14&endday=2023-08-20&tree=all

Comment 16

[Edgar Chen [:edgar]]

Doesn't work on this recently.