def test_envelope(self):
countries = Country.objects.annotate(
envelope=functions.Envelope('mpoly'))
for country in countries:
self.assertIsInstance(country.envelope, Polygon)
def test_envelope(self):
countries = Country.objects.annotate(
envelope=functions.Envelope("mpoly"))
for country in countries:
self.assertTrue(country.envelope.equals(country.mpoly.envelope))
