def test_to_dict(self): ''' ''' aircraft = Struct() aircraft.tail_number = 'G-ABCD' aircraft.frame.type = '737-3C' aircraft.model.dist_gear_to_tail = 200 self.assertEqual(aircraft.to_dict(), { 'tail_number': 'G-ABCD', 'frame': {'type': '737-3C'}, 'model': {'dist_gear_to_tail': 200}, })