1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
|
from unittest import skipUnless
from django.contrib.gis.db.models import GeometryField, Value, functions
from django.contrib.gis.geos import Point, Polygon
from django.test import TestCase, skipUnlessDBFeature
from ..utils import postgis
from .models import City
class GeoExpressionsTests(TestCase):
fixtures = ['initial']
def test_geometry_value_annotation(self):
p = Point(1, 1, srid=4326)
point = City.objects.annotate(p=Value(p, GeometryField(srid=4326))).first().p
self.assertEqual(point, p)
@skipUnlessDBFeature('supports_transform')
def test_geometry_value_annotation_different_srid(self):
p = Point(1, 1, srid=32140)
point = City.objects.annotate(p=Value(p, GeometryField(srid=4326))).first().p
self.assertTrue(point.equals_exact(p.transform(4326, clone=True), 10 ** -5))
self.assertEqual(point.srid, 4326)
@skipUnless(postgis, 'Only postgis has geography fields.')
def test_geography_value(self):
p = Polygon(((1, 1), (1, 2), (2, 2), (2, 1), (1, 1)))
area = City.objects.annotate(a=functions.Area(Value(p, GeometryField(srid=4326, geography=True)))).first().a
self.assertAlmostEqual(area.sq_km, 12305.1, 0)
|
