Bug: Intermittent browser/components/sessionstore/test/browser_closed_objects_changed_notifications_tabs.js | single tracking bug
Status: RESOLVED
Priority: P5
Resolution: INCOMPLETE
Created: 2022-08-20 14:31:43+00:00
Resolved: 2022-09-27 17:04:07+00:00

**Filed by:** nbeleuzu [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=387947899&repo=mozilla-central
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/PfUXZq7tRMGYwfaEjVj6_g/runs/0/artifacts/public/logs/live_backing.log

---
```
[task 2022-08-20T11:48:45.233Z] 11:48:45     INFO - TEST-START | browser/components/sessionstore/test/browser_closed_objects_changed_notifications_tabs.js
[task 2022-08-20T11:48:45.402Z] 11:48:45     INFO - GECKO(1248) | 1660996125410	Marionette	TRACE	Received observer notification browser-delayed-startup-finished
[task 2022-08-20T11:48:45.455Z] 11:48:45     INFO - GECKO(1248) | *** You are running in background task mode. ***
[task 2022-08-20T11:48:45.455Z] 11:48:45     INFO - GECKO(1248) | *** You are running in headless mode.
[task 2022-08-20T11:48:45.555Z] 11:48:45     INFO - GECKO(1248) | console.error: "C:\\Users\\task_166099161055134\\AppData\\Local\\Temp\\tmp9744mreg.mozrunner" "" 0 ".purge.bg_rm"
[task 2022-08-20T11:48:45.687Z] 11:48:45     INFO - GECKO(1248) | 1660996125700	Marionette	TRACE	Received observer notification browser-delayed-startup-finished
[task 2022-08-20T11:48:45.740Z] 11:48:45     INFO - GECKO(1248) | *** You are running in background task mode. ***
[task 2022-08-20T11:48:45.751Z] 11:48:45     INFO - GECKO(1248) | *** You are running in headless mode.
[task 2022-08-20T11:48:45.856Z] 11:48:45     INFO - GECKO(1248) | console.error: "C:\\Users\\task_166099161055134\\AppData\\Local\\Temp\\tmp9744mreg.mozrunner" "" 0 ".purge.bg_rm"
[task 2022-08-20T11:48:46.419Z] 11:48:46     INFO - TEST-INFO | started process screenshot
[task 2022-08-20T11:48:46.506Z] 11:48:46     INFO - TEST-INFO | screenshot: exit 0
[task 2022-08-20T11:48:46.518Z] 11:48:46     INFO - Buffered messages logged at 11:48:45
[task 2022-08-20T11:48:46.518Z] 11:48:46     INFO - Entering test bound test_closedObjectsChangedNotifications
[task 2022-08-20T11:48:46.519Z] 11:48:46     INFO - Opening and closing a tab.
[task 2022-08-20T11:48:46.519Z] 11:48:46     INFO - Buffered messages logged at 11:48:46
[task 2022-08-20T11:48:46.521Z] 11:48:46     INFO - TEST-PASS | browser/components/sessionstore/test/browser_closed_objects_changed_notifications_tabs.js | The expected number of notifications was received. - 
[task 2022-08-20T11:48:46.521Z] 11:48:46     INFO - Opening and closing a second tab.
[task 2022-08-20T11:48:46.521Z] 11:48:46     INFO - Buffered messages finished
[task 2022-08-20T11:48:46.523Z] 11:48:46     INFO - TEST-UNEXPECTED-FAIL | browser/components/sessionstore/test/browser_closed_objects_changed_notifications_tabs.js | The expected number of notifications was received. - Got 1, expected 2
[task 2022-08-20T11:48:46.523Z] 11:48:46     INFO - Stack trace:
[task 2022-08-20T11:48:46.523Z] 11:48:46     INFO - chrome://mochikit/content/browser-test.js:test_is:1468
[task 2022-08-20T11:48:46.523Z] 11:48:46     INFO - chrome://mochitests/content/browser/browser/components/sessionstore/test/browser_closed_objects_changed_notifications_tabs.js:assertNotificationCount:45
[task 2022-08-20T11:48:46.523Z] 11:48:46     INFO - chrome://mochitests/content/browser/browser/components/sessionstore/test/browser_closed_objects_changed_notifications_tabs.js:test_closedObjectsChangedNotifications:80
[task 2022-08-20T11:48:46.523Z] 11:48:46     INFO - Changing the browser.sessionstore.max_tabs_undo pref.
[task 2022-08-20T11:48:46.523Z] 11:48:46     INFO - Not taking screenshot here: see the one that was previously logged
[task 2022-08-20T11:48:46.526Z] 11:48:46     INFO - TEST-UNEXPECTED-FAIL | browser/components/sessionstore/test/browser_closed_objects_changed_notifications_tabs.js | The expected number of notifications was received. - Got 2, expected 3
[task 2022-08-20T11:48:46.526Z] 11:48:46     INFO - Stack trace:
[task 2022-08-20T11:48:46.526Z] 11:48:46     INFO - chrome://mochikit/content/browser-test.js:test_is:1468
[task 2022-08-20T11:48:46.526Z] 11:48:46     INFO - chrome://mochitests/content/browser/browser/components/sessionstore/test/browser_closed_objects_changed_notifications_tabs.js:assertNotificationCount:45
[task 2022-08-20T11:48:46.526Z] 11:48:46     INFO - chrome://mochitests/content/browser/browser/components/sessionstore/test/browser_closed_objects_changed_notifications_tabs.js:test_closedObjectsChangedNotifications:89
[task 2022-08-20T11:48:46.527Z] 11:48:46     INFO - Undoing close of remaining closed tab.
[task 2022-08-20T11:48:46.533Z] 11:48:46     INFO - TEST-PASS | browser/components/sessionstore/test/browser_closed_objects_changed_notifications_tabs.js | The expected number of notifications was received. - 
```