'Make sure settings are correct if none are explicitly set in XML.'

def test_from_xml_no_attributes(self):

    module_system = DummySystem(load_error_modules=True)
    xml_data = '<video></video>'
    output = VideoDescriptor.from_xml(xml_data, module_system, Mock())
    self.assert_attributes_equal(output, {'youtube_id_0_75': '', 'youtube_id_1_0': '3_yD_cEKoCk', 'youtube_id_1_25': '', 'youtube_id_1_5': '', 'show_captions': True, 'start_time': datetime.timedelta(seconds=0.0), 'end_time': datetime.timedelta(seconds=0.0), 'track': '', 'handout': None, 'download_track': False, 'download_video': False, 'html5_sources': [], 'data': '', 'transcripts': {}})
