We should be able to merge this file with the ringtone_list_test.js file. That will let us run the same tests for both cases. We might want some divergence in the tests, e.g. testing "None" as an alert tone, but it should still be possible to do this all in one test file. See apps/system/test/marionette/media_playback_test.js for an example of generating tests like this.