1623095 - Perma TEST-UNEXPECTED-FAIL | browser/components/extensions/test/browser/browser_ext_browserAction_telemetry.js | Uncaught exception - at chrome://mochitests/content/browser/browser/components/extensio when version number gets increased to 77 on 2020-04-06

Status: VERIFIED FIXED

(WebExtensions :: General, defect, P1)

Description

[Cristian Brindusan [:cbrindusan]]

Central as Version Increase simulation:
https://treeherder.mozilla.org/#/jobs?repo=try&selectedJob=293495585&resultStatus=testfailed%2Cbusted%2Cexception&revision=b6c5aecb707dafe97258c42aff0dc001b6eeee4a

Failure log:
https://treeherder.mozilla.org/logviewer.html#/jobs?job_id=293495585&repo=try&lineNumber=1986

[task 2020-03-17T13:00:31.620Z] 13:00:31 INFO - TEST-START | browser/components/extensions/test/browser/browser_ext_browserAction_telemetry.js
[task 2020-03-17T13:00:31.625Z] 13:00:31 INFO - TEST-INFO | started process screenshot
[task 2020-03-17T13:00:31.684Z] 13:00:31 INFO - TEST-INFO | screenshot: exit 0
[task 2020-03-17T13:00:31.684Z] 13:00:31 INFO - Buffered messages logged at 13:00:31
[task 2020-03-17T13:00:31.685Z] 13:00:31 INFO - Entering test bound testBrowserActionTelemetryTiming
[task 2020-03-17T13:00:31.685Z] 13:00:31 INFO - Extension loaded
[task 2020-03-17T13:00:31.686Z] 13:00:31 INFO - Extension loaded
[task 2020-03-17T13:00:31.686Z] 13:00:31 INFO - Buffered messages finished
[task 2020-03-17T13:00:31.687Z] 13:00:31 INFO - TEST-UNEXPECTED-FAIL | browser/components/extensions/test/browser/browser_ext_browserAction_telemetry.js | Uncaught exception - at chrome://mochitests/content/browser/browser/components/extensions/test/browser/browser_ext_browserAction_telemetry.js:87 - TypeError: can't access property "sum", histogram.snapshot(...) is undefined

Comment 1

[Luca Greco [:rpl] [:luca] [:lgreco]]

I just filed Bug 1623315 (to extend or remove the probes that are expiring in Firefox 77 and triggering this test failure) and assigned it to me.

Comment 2

[Luca Greco [:rpl] [:luca] [:lgreco]]

Bug 1623315 has been merged to mozilla-central a couple of days ago, and so this failure shouldn't happen in the next "version increase" simulation.

I haven't closed this issue explicitly to let it be explicitly verified by a new "version increase" simulation.

Comment 3

[Alexandru Michis [:malexandru]]

Verified fixed in today's central as version increase simulation:
https://treeherder.mozilla.org/#/jobs?repo=try&resultStatus=testfailed%2Cbusted%2Cexception%2Crunnable&revision=977e1b0ec819e44708c47989529e8fd44e846771&searchStr=%28bc&selectedJob=295583713