mirror of
https://github.com/django/django.git
synced 2024-12-30 21:16:26 +00:00
123 lines
4.8 KiB
Python
123 lines
4.8 KiB
Python
import unittest
|
|
|
|
from django.contrib.gis.gdal import HAS_GDAL
|
|
from django.db import connection
|
|
from django.test import skipUnlessDBFeature
|
|
from django.utils import six
|
|
|
|
from .utils import SpatialRefSys, oracle, postgis, spatialite
|
|
|
|
test_srs = ({
|
|
'srid': 4326,
|
|
'auth_name': ('EPSG', True),
|
|
'auth_srid': 4326,
|
|
# Only the beginning, because there are differences depending on installed libs
|
|
'srtext': 'GEOGCS["WGS 84",DATUM["WGS_1984",SPHEROID["WGS 84"',
|
|
# +ellps=WGS84 has been removed in the 4326 proj string in proj-4.8
|
|
'proj4_re': r'\+proj=longlat (\+ellps=WGS84 )?(\+datum=WGS84 |\+towgs84=0,0,0,0,0,0,0 )\+no_defs ',
|
|
'spheroid': 'WGS 84', 'name': 'WGS 84',
|
|
'geographic': True, 'projected': False, 'spatialite': True,
|
|
# From proj's "cs2cs -le" and Wikipedia (semi-minor only)
|
|
'ellipsoid': (6378137.0, 6356752.3, 298.257223563),
|
|
'eprec': (1, 1, 9),
|
|
}, {
|
|
'srid': 32140,
|
|
'auth_name': ('EPSG', False),
|
|
'auth_srid': 32140,
|
|
'srtext': (
|
|
'PROJCS["NAD83 / Texas South Central",GEOGCS["NAD83",'
|
|
'DATUM["North_American_Datum_1983",SPHEROID["GRS 1980"'
|
|
),
|
|
'proj4_re': r'\+proj=lcc \+lat_1=30.28333333333333 \+lat_2=28.38333333333333 \+lat_0=27.83333333333333 '
|
|
r'\+lon_0=-99 \+x_0=600000 \+y_0=4000000 (\+ellps=GRS80 )?'
|
|
r'(\+datum=NAD83 |\+towgs84=0,0,0,0,0,0,0 )?\+units=m \+no_defs ',
|
|
'spheroid': 'GRS 1980', 'name': 'NAD83 / Texas South Central',
|
|
'geographic': False, 'projected': True, 'spatialite': False,
|
|
# From proj's "cs2cs -le" and Wikipedia (semi-minor only)
|
|
'ellipsoid': (6378137.0, 6356752.31414, 298.257222101),
|
|
'eprec': (1, 5, 10),
|
|
})
|
|
|
|
|
|
@unittest.skipUnless(HAS_GDAL, "SpatialRefSysTest needs gdal support")
|
|
@skipUnlessDBFeature("has_spatialrefsys_table")
|
|
class SpatialRefSysTest(unittest.TestCase):
|
|
|
|
def test_retrieve(self):
|
|
"""
|
|
Test retrieval of SpatialRefSys model objects.
|
|
"""
|
|
for sd in test_srs:
|
|
srs = SpatialRefSys.objects.get(srid=sd['srid'])
|
|
self.assertEqual(sd['srid'], srs.srid)
|
|
|
|
# Some of the authority names are borked on Oracle, e.g., SRID=32140.
|
|
# also, Oracle Spatial seems to add extraneous info to fields, hence the
|
|
# the testing with the 'startswith' flag.
|
|
auth_name, oracle_flag = sd['auth_name']
|
|
if postgis or (oracle and oracle_flag):
|
|
self.assertEqual(True, srs.auth_name.startswith(auth_name))
|
|
|
|
self.assertEqual(sd['auth_srid'], srs.auth_srid)
|
|
|
|
# No proj.4 and different srtext on oracle backends :(
|
|
if postgis:
|
|
self.assertTrue(srs.wkt.startswith(sd['srtext']))
|
|
six.assertRegex(self, srs.proj4text, sd['proj4_re'])
|
|
|
|
def test_osr(self):
|
|
"""
|
|
Test getting OSR objects from SpatialRefSys model objects.
|
|
"""
|
|
for sd in test_srs:
|
|
sr = SpatialRefSys.objects.get(srid=sd['srid'])
|
|
self.assertEqual(True, sr.spheroid.startswith(sd['spheroid']))
|
|
self.assertEqual(sd['geographic'], sr.geographic)
|
|
self.assertEqual(sd['projected'], sr.projected)
|
|
|
|
if not (spatialite and not sd['spatialite']):
|
|
# Can't get 'NAD83 / Texas South Central' from PROJ.4 string
|
|
# on SpatiaLite
|
|
self.assertEqual(True, sr.name.startswith(sd['name']))
|
|
|
|
# Testing the SpatialReference object directly.
|
|
if postgis or spatialite:
|
|
srs = sr.srs
|
|
six.assertRegex(self, srs.proj4, sd['proj4_re'])
|
|
# No `srtext` field in the `spatial_ref_sys` table in SpatiaLite < 4
|
|
if not spatialite or connection.ops.spatial_version[0] >= 4:
|
|
self.assertTrue(srs.wkt.startswith(sd['srtext']))
|
|
|
|
def test_ellipsoid(self):
|
|
"""
|
|
Test the ellipsoid property.
|
|
"""
|
|
for sd in test_srs:
|
|
# Getting the ellipsoid and precision parameters.
|
|
ellps1 = sd['ellipsoid']
|
|
prec = sd['eprec']
|
|
|
|
# Getting our spatial reference and its ellipsoid
|
|
srs = SpatialRefSys.objects.get(srid=sd['srid'])
|
|
ellps2 = srs.ellipsoid
|
|
|
|
for i in range(3):
|
|
self.assertAlmostEqual(ellps1[i], ellps2[i], prec[i])
|
|
|
|
@skipUnlessDBFeature('supports_add_srs_entry')
|
|
def test_add_entry(self):
|
|
"""
|
|
Test adding a new entry in the SpatialRefSys model using the
|
|
add_srs_entry utility.
|
|
"""
|
|
from django.contrib.gis.utils import add_srs_entry
|
|
|
|
add_srs_entry(3857)
|
|
self.assertTrue(
|
|
SpatialRefSys.objects.filter(srid=3857).exists()
|
|
)
|
|
srs = SpatialRefSys.objects.get(srid=3857)
|
|
self.assertTrue(
|
|
SpatialRefSys.get_spheroid(srs.wkt).startswith('SPHEROID[')
|
|
)
|