import copy from django.contrib.gis.db.models.sql import AreaField, DistanceField from django.test import SimpleTestCase class FieldsTests(SimpleTestCase): def test_area_field_deepcopy(self): field = AreaField() self.assertEqual(copy.deepcopy(field), field) def test_distance_field_deepcopy(self): field = DistanceField() self.assertEqual(copy.deepcopy(field), field)