113 lines
4.1 KiB
Python
113 lines
4.1 KiB
Python
import binascii, ctypes, unittest
|
|
from django.contrib.gis.geos import GEOSGeometry, WKTReader, WKTWriter, WKBReader, WKBWriter, geos_version_info
|
|
|
|
class GEOSIOTest(unittest.TestCase):
|
|
|
|
def test01_wktreader(self):
|
|
# Creating a WKTReader instance
|
|
wkt_r = WKTReader()
|
|
wkt = 'POINT (5 23)'
|
|
|
|
# read() should return a GEOSGeometry
|
|
ref = GEOSGeometry(wkt)
|
|
g1 = wkt_r.read(wkt)
|
|
g2 = wkt_r.read(unicode(wkt))
|
|
|
|
for geom in (g1, g2):
|
|
self.assertEqual(ref, geom)
|
|
|
|
# Should only accept basestring objects.
|
|
self.assertRaises(TypeError, wkt_r.read, 1)
|
|
self.assertRaises(TypeError, wkt_r.read, buffer('foo'))
|
|
|
|
def test02_wktwriter(self):
|
|
# Creating a WKTWriter instance, testing its ptr property.
|
|
wkt_w = WKTWriter()
|
|
self.assertRaises(TypeError, wkt_w._set_ptr, WKTReader.ptr_type())
|
|
|
|
ref = GEOSGeometry('POINT (5 23)')
|
|
ref_wkt = 'POINT (5.0000000000000000 23.0000000000000000)'
|
|
self.assertEqual(ref_wkt, wkt_w.write(ref))
|
|
|
|
def test03_wkbreader(self):
|
|
# Creating a WKBReader instance
|
|
wkb_r = WKBReader()
|
|
|
|
hex = '000000000140140000000000004037000000000000'
|
|
wkb = buffer(binascii.a2b_hex(hex))
|
|
ref = GEOSGeometry(hex)
|
|
|
|
# read() should return a GEOSGeometry on either a hex string or
|
|
# a WKB buffer.
|
|
g1 = wkb_r.read(wkb)
|
|
g2 = wkb_r.read(hex)
|
|
for geom in (g1, g2):
|
|
self.assertEqual(ref, geom)
|
|
|
|
bad_input = (1, 5.23, None, False)
|
|
for bad_wkb in bad_input:
|
|
self.assertRaises(TypeError, wkb_r.read, bad_wkb)
|
|
|
|
def test04_wkbwriter(self):
|
|
wkb_w = WKBWriter()
|
|
|
|
# Representations of 'POINT (5 23)' in hex -- one normal and
|
|
# the other with the byte order changed.
|
|
g = GEOSGeometry('POINT (5 23)')
|
|
hex1 = '010100000000000000000014400000000000003740'
|
|
wkb1 = buffer(binascii.a2b_hex(hex1))
|
|
hex2 = '000000000140140000000000004037000000000000'
|
|
wkb2 = buffer(binascii.a2b_hex(hex2))
|
|
|
|
self.assertEqual(hex1, wkb_w.write_hex(g))
|
|
self.assertEqual(wkb1, wkb_w.write(g))
|
|
|
|
# Ensuring bad byteorders are not accepted.
|
|
for bad_byteorder in (-1, 2, 523, 'foo', None):
|
|
# Equivalent of `wkb_w.byteorder = bad_byteorder`
|
|
self.assertRaises(ValueError, wkb_w._set_byteorder, bad_byteorder)
|
|
|
|
# Setting the byteorder to 0 (for Big Endian)
|
|
wkb_w.byteorder = 0
|
|
self.assertEqual(hex2, wkb_w.write_hex(g))
|
|
self.assertEqual(wkb2, wkb_w.write(g))
|
|
|
|
# Back to Little Endian
|
|
wkb_w.byteorder = 1
|
|
|
|
# Now, trying out the 3D and SRID flags.
|
|
g = GEOSGeometry('POINT (5 23 17)')
|
|
g.srid = 4326
|
|
|
|
hex3d = '0101000080000000000000144000000000000037400000000000003140'
|
|
wkb3d = buffer(binascii.a2b_hex(hex3d))
|
|
hex3d_srid = '01010000A0E6100000000000000000144000000000000037400000000000003140'
|
|
wkb3d_srid = buffer(binascii.a2b_hex(hex3d_srid))
|
|
|
|
# Ensuring bad output dimensions are not accepted
|
|
for bad_outdim in (-1, 0, 1, 4, 423, 'foo', None):
|
|
# Equivalent of `wkb_w.outdim = bad_outdim`
|
|
self.assertRaises(ValueError, wkb_w._set_outdim, bad_outdim)
|
|
|
|
# These tests will fail on 3.0.0 because of a bug that was fixed in 3.1:
|
|
# http://trac.osgeo.org/geos/ticket/216
|
|
if not geos_version_info()['version'].startswith('3.0.'):
|
|
# Now setting the output dimensions to be 3
|
|
wkb_w.outdim = 3
|
|
|
|
self.assertEqual(hex3d, wkb_w.write_hex(g))
|
|
self.assertEqual(wkb3d, wkb_w.write(g))
|
|
|
|
# Telling the WKBWriter to inlcude the srid in the representation.
|
|
wkb_w.srid = True
|
|
self.assertEqual(hex3d_srid, wkb_w.write_hex(g))
|
|
self.assertEqual(wkb3d_srid, wkb_w.write(g))
|
|
|
|
def suite():
|
|
s = unittest.TestSuite()
|
|
s.addTest(unittest.makeSuite(GEOSIOTest))
|
|
return s
|
|
|
|
def run(verbosity=2):
|
|
unittest.TextTestRunner(verbosity=verbosity).run(suite())
|