'Test source list property w/ children and attrs.'

def test_source_list_children_and_attr(self):

    config = self.config_children_and_attr
    universal.validate_config(config)
    ump = universal.UniversalMediaPlayer(self.hass, **config)
    self.assertEqual("['dvd',    'htpc']", ump.source_list)
    self.hass.states.set(self.mock_source_list_id, ['dvd', 'htpc', 'game'])
    self.assertEqual("['dvd',    'htpc',    'game']", ump.source_list)
