def test__custom_methods(self): views = ViewMapper() views.add_method('minus_x', 'x', {'key': 'value'}) views.add_method('minus_y', 'y') views.add_method('minus_z', 'z') for view in ['minus_x', 'minus_y', 'minus_z']: self.assertIn(view, views._custom_methods()) for view in ['X', 'Y', 'Z']: self.assertNotIn(view, views._custom_methods())