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31 lines
1.2 KiB
Python
31 lines
1.2 KiB
Python
from unittest import skipUnless
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from django.contrib.gis.db.models import GeometryField, Value, functions
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from django.contrib.gis.geos import Point, Polygon
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from django.test import TestCase, skipUnlessDBFeature
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from ..utils import postgis
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from .models import City
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class GeoExpressionsTests(TestCase):
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fixtures = ['initial']
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def test_geometry_value_annotation(self):
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p = Point(1, 1, srid=4326)
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point = City.objects.annotate(p=Value(p, GeometryField(srid=4326))).first().p
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self.assertEqual(point, p)
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@skipUnlessDBFeature('supports_transform')
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def test_geometry_value_annotation_different_srid(self):
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p = Point(1, 1, srid=32140)
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point = City.objects.annotate(p=Value(p, GeometryField(srid=4326))).first().p
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self.assertTrue(point.equals_exact(p.transform(4326, clone=True), 10 ** -5))
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self.assertEqual(point.srid, 4326)
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@skipUnless(postgis, 'Only postgis has geography fields.')
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def test_geography_value(self):
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p = Polygon(((1, 1), (1, 2), (2, 2), (2, 1), (1, 1)))
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area = City.objects.annotate(a=functions.Area(Value(p, GeometryField(srid=4326, geography=True)))).first().a
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self.assertAlmostEqual(area.sq_km, 12305.1, 0)
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