Complemented test about non-supported aggregation exception

        for ptown in [ptown1, ptown2]:

            self.assertEqual('<Point><coordinates>-104.609252,38.255001</coordinates></Point>', ptown.kml)

    # Only PostGIS has support for the MakeLine aggregate.

    @skipUnlessDBFeature("supports_make_line_aggr")

    @ignore_warnings(category=RemovedInDjango20Warning)

    def test_make_line(self):

        """

        Testing the (deprecated) `make_line` GeoQuerySet method and the MakeLine

        aggregate.

        """

        if not connection.features.supports_make_line_aggr:

            # Only PostGIS has support for the MakeLine aggregate. For other

            # backends, test that NotImplementedError is raised

            self.assertRaises(

                NotImplementedError,

                City.objects.all().aggregate, MakeLine('point')

            )

            return

        # Ensuring that a `TypeError` is raised on models without PointFields.

        self.assertRaises(TypeError, State.objects.make_line)

        self.assertRaises(TypeError, Country.objects.make_line)