1286893 - Web Platform Test timeout is accompanied by "JavaScript error: tests/web-platform/tests/tools/wptrunner/wptrunner/executors/executormarionette.py, line 80: TypeError: window.win.timeout is not a function"

Status: REOPENED

(Remote Protocol :: Marionette, defect, P3)

Description

[Daniel Holbert [:dholbert]]

The timeout in this web-platform-test run was accompanied by what looks like an (innocuous?) bug in Marionete:
{
TEST-START | /2dcontext/compositing/2d.composite.transparent.destination-in.html
 02:26:07     INFO - PROCESS | 957 | MARIONETTE LOG: INFO: Timeout fired
 02:26:07     INFO - PROCESS | 957 | JavaScript error: executormarionette.py, line 33: TypeError: window.wrappedJSObject.win.timeout is not a function
02:26:07 INFO - TEST-UNEXPECTED-TIMEOUT | /2dcontext/compositing/2d.composite.transparent.destination-in.html | expected OK 
}
https://treeherder.mozilla.org/logviewer.html#?job_id=31780736&repo=mozilla-inbound

Filing this bug on whatever's causing that "TypeError: window.wrappedJSObject.win.timeout is not a function"

Comment 1

[David Burns :automatedtester]

I have tried to recreate this and can't so closing. If it reappears please reopen

Comment 2

[Robert O'Callahan (:roc) (email my personal email if necessary)]

This is appearing a lot. See for example
https://treeherder.mozilla.org/#/jobs?repo=try&revision=33d9e29b239a1ac3b7ede7f86bf7b3654a4bc09e&selectedJob=190170896
https://taskcluster-artifacts.net/U_zo-7t_Q1iSC1z76GeAlw/0/public/logs/live_backing.log

[task 2018-07-26T03:38:04.299Z] 03:38:04     INFO - TEST-START | /content-security-policy/generic/filesystem-urls-do-not-match-self.sub.html
[task 2018-07-26T03:38:04.380Z] 03:38:04     INFO - PID 3193 | 1532576284375	Marionette	DEBUG	[2147483656] Frame script loaded
[task 2018-07-26T03:38:04.380Z] 03:38:04     INFO - PID 3193 | 1532576284376	Marionette	DEBUG	[2147483656] Frame script registered
[task 2018-07-26T03:38:04.683Z] 03:38:04     INFO - PID 3193 | 1532576284672	Marionette	DEBUG	[2147483659] Frame script loaded
[task 2018-07-26T03:38:04.685Z] 03:38:04     INFO - PID 3193 | 1532576284673	Marionette	DEBUG	[2147483659] Frame script registered
[task 2018-07-26T03:38:14.411Z] 03:38:14     INFO - PID 3193 | JavaScript error: tests/web-platform/tests/tools/wptrunner/wptrunner/executors/executormarionette.py, line 80: TypeError: window.win.timeout is not a function
[task 2018-07-26T03:38:19.431Z] 03:38:19     INFO - TEST-TIMEOUT | /content-security-policy/generic/filesystem-urls-do-not-match-self.sub.html | took 15129ms

Comment 3

[Robert O'Callahan (:roc) (email my personal email if necessary)]

This reproduces the bug locally for me:
./mach web-platform-tests --debugger=rr /fetch/api/abort/general.any.html

Running under rr seems to slow things down enough to reproduce the JS error, but not enough to cause tests to fail.

Comment 4

[Andreas Tolfsen ❲:ato❳]

I somewhat suspect this is because the content browser gets registered
as a WebDriver window handle too soon, causing us to execute the
test before it has been completely initialised.  This would get
fixed as part of
https://bugzilla.mozilla.org/show_bug.cgi?id=marionette-window-tracking.