1277555 - Various performance-timeline web-platform-tests are going to permafail when Gecko 49 merges to Aurora

Status: RESOLVED FIXED

(Testing :: web-platform-tests, defect)

Description

[Ryan VanderMeulen [:RyanVM]]

Do we need to make sure a pref is forced on for these?

https://treeherder.mozilla.org/logviewer.html#?job_id=21783499&repo=try#L1395

TEST-UNEXPECTED-FAIL | /performance-timeline/idlharness.html | PerformanceObserverEntryList interface: existence and properties of interface object - assert_own_property: self does not have own property "PerformanceObserverEntryList" expected property "PerformanceObserverEntryList" missing

etc...

Comment 1

[James Graham [:jgraham]]

dom.enable_performance or dom.enable_resource_timing, perhaps, but I'm surprised they're not already on.

Comment 2

[Valentin Gosu [:valentin] (he/him)]

The pref seems to be dom.enable_performance_observer - and isn't currently on.

Comment 3

[Marcia Knous [:marcia]]

Tracking 49+ to keep this on the radar - valentin can you own this bug or should someone else?

Comment 4

[Hiroyuki Ikezoe (:hiro)]

(In reply to James Graham [:jgraham] from comment #1)
> dom.enable_performance or dom.enable_resource_timing, perhaps, but I'm
> surprised they're not already on.

The preference value is enabled only on nightly.  
Is there any way to check preference value in meta files (idlharness.html.ini, etc.)?

Comment 5

[Valentin Gosu [:valentin] (he/him)]

Attachment: Set dom.enable_performance_observer pref in web-platform tests

It's either this, or disabling the tests on only on aurora

Comment 6

[Hiroyuki Ikezoe (:hiro)]

Thank you, Valentin!

Comment 7

[Ryan VanderMeulen [:RyanVM]]

For a cleaner solution, you could use __dir__.ini to set the pref for all tests inside that directory as well. For example:
https://dxr.mozilla.org/mozilla-central/source/testing/web-platform/harness/test/metadata/testharness/firefox/__dir__.ini

Comment 8

[Hiroyuki Ikezoe (:hiro)]

I will use them from next time.  Thank you, both!

Comment 9

[Valentin Gosu [:valentin] (he/him)]

Attachment: Set dom.enable_performance_observer pref in performance-timeline web-platform tests

This is much better. Thanks for the suggestion, Ryan!

Comment 10

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/mozilla-inbound/rev/139ce9bc8149
Set dom.enable_performance_observer pref in performance-timeline web-platform tests r=jgraham

Comment 11

[Intermittent Failures Robot]

70 automation job failures were associated with this bug in the last 7 days.

Repository breakdown:
* try: 70

Platform breakdown:
* osx-10-10: 16
* linux64: 16
* linux32: 16
* windows7-32: 14
* windowsxp: 8

For more details, see:
https://brasstacks.mozilla.com/orangefactor/?display=Bug&bugid=1277555&startday=2016-05-30&endday=2016-06-05&tree=all

Comment 12

[Carsten Book [:Tomcat]]

https://hg.mozilla.org/mozilla-central/rev/139ce9bc8149