821766 - Repeatedly launching app causes a JavaScript exception to be thrown

Status: RESOLVED WORKSFORME

(Remote Protocol :: Marionette, defect)

Description

[Dave Hunt [:davehunt] [he/him] ⌚BST]

I believe this is just highlighting an issue that we see in various circumstances, but it's pretty easy to replicate this way:

$ wget https://raw.github.com/mozilla/gaia-ui-tests/master/gaiatest/atoms/gaia_apps.js
$ adb forward tcp:2828 tcp:2828
$ python
>>> from marionette import Marionette
>>> marionette = Marionette(host='localhost', port=2828)
>>> marionette.start_session()
>>> marionette.set_script_timeout(60000)
>>> marionette.set_context(marionette.CONTEXT_CONTENT)
>>> marionette.import_script('gaia_apps.js')
>>> for i in range(10):
...     marionette.execute_async_script('GaiaApps.launchWithName("Phone");')
...     marionette.execute_async_script('GaiaApps.killAll();')

Expected result: Phone app launches and terminates 10 times

Actual result: After a few iterations the following traceback is thrown.

Traceback (most recent call last):
  File "<stdin>", line 2, in <module>
  File "/Users/dhunt/workspace/mozilla-central/testing/marionette/client/marionette/marionette.py", line 458, in execute_async_script
    specialPowers=special_powers)
  File "/Users/dhunt/workspace/mozilla-central/testing/marionette/client/marionette/marionette.py", line 211, in _send_message
    self._handle_error(response)
  File "/Users/dhunt/workspace/mozilla-central/testing/marionette/client/marionette/marionette.py", line 246, in _handle_error
    raise JavascriptException(message=message, status=status, stacktrace=stacktrace)
marionette.errors.JavascriptException: {}

Comment 1

[Jonathan Griffin (:jgriffin)]

Malini found a way to get stack traces for some of these weird exceptions; once that's landed, we should be able to figure this out.  My gut feeling is that we're hitting a Gaia bug, which we're catching in our "error" event listener.

Comment 2

[Dave Hunt [:davehunt] [he/him] ⌚BST]

I'm no longer able to replicate this, so resolving as WORKSFORME. Please reopen with additional details if you still encounter this issue.