810041 - [B2G] SpecialPowers.pushPrefEnv throws in mochitest

Status: RESOLVED FIXED

(Testing :: Mochitest, defect)

Description

[David Chan [:dchan]]

Attachment: pushPrefEnv test case

I recently updated to the latest b2g with ./repo sync and now pushPrefEnv is throwing for me.

logcat gives the following output
E/GeckoConsole(  539): [JavaScript Error: "uncaught exception: Error getting pref"]
E/GeckoConsole(  501): [JavaScript Error: "uncaught exception: Error getting pref"]
which is thrown at
http://mxr.mozilla.org/mozilla-central/source/testing/specialpowers/content/specialpowersAPI.js#739

pushPrefEnv worked for me last week. I don't have an exact revision though.

B2G Gecko commit
9380327863b9093b485ac72fdc4bf80229fba60e


I didn't get an error when testing on Nightly
4e87d83555011362aac89a0943722a0287b2bd2b

Comment 1

[Jonathan Griffin (:jgriffin)]

I wonder if this is a side-effect of bug 798580?

Comment 2

[Andrew Halberstadt [:ahal]]

So I never initialized a listener for 'SPPrefService': http://mxr.mozilla.org/mozilla-central/source/testing/mochitest/runtestsb2g.py#401

Not sure how I missed that, it's right here: http://mxr.mozilla.org/mozilla-central/source/testing/specialpowers/components/SpecialPowersObserver.js#55

Comment 3

[Andrew Halberstadt [:ahal]]

Attachment: Patch 1.0 - Add spprefservice listener

Comment 4

[Andrew Halberstadt [:ahal]]

https://hg.mozilla.org/integration/mozilla-inbound/rev/aa9275334173

Comment 5

[Ryan VanderMeulen [:RyanVM]]

https://hg.mozilla.org/mozilla-central/rev/aa9275334173

Comment 6

[Ryan VanderMeulen [:RyanVM]]

https://hg.mozilla.org/releases/mozilla-aurora/rev/f014da868d1a