mirror of
https://github.com/django/django.git
synced 2024-11-27 17:16:33 +01:00
230 lines
7.8 KiB
Python
230 lines
7.8 KiB
Python
import binascii
|
|
|
|
from django.contrib.gis.geos import (
|
|
GEOSGeometry,
|
|
Point,
|
|
Polygon,
|
|
WKBReader,
|
|
WKBWriter,
|
|
WKTReader,
|
|
WKTWriter,
|
|
)
|
|
from django.contrib.gis.geos.libgeos import geos_version_tuple
|
|
from django.test import SimpleTestCase
|
|
|
|
|
|
class GEOSIOTest(SimpleTestCase):
|
|
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.encode())
|
|
g2 = wkt_r.read(wkt)
|
|
|
|
for geom in (g1, g2):
|
|
self.assertEqual(ref, geom)
|
|
|
|
# Should only accept string objects.
|
|
with self.assertRaises(TypeError):
|
|
wkt_r.read(1)
|
|
with self.assertRaises(TypeError):
|
|
wkt_r.read(memoryview(b"foo"))
|
|
|
|
def test02_wktwriter(self):
|
|
# Creating a WKTWriter instance, testing its ptr property.
|
|
wkt_w = WKTWriter()
|
|
with self.assertRaises(TypeError):
|
|
wkt_w.ptr = WKTReader.ptr_type()
|
|
|
|
ref = GEOSGeometry("POINT (5 23)")
|
|
ref_wkt = "POINT (5.0000000000000000 23.0000000000000000)"
|
|
self.assertEqual(ref_wkt, wkt_w.write(ref).decode())
|
|
|
|
def test_wktwriter_constructor_arguments(self):
|
|
wkt_w = WKTWriter(dim=3, trim=True, precision=3)
|
|
ref = GEOSGeometry("POINT (5.34562 23 1.5)")
|
|
if geos_version_tuple() > (3, 10):
|
|
ref_wkt = "POINT Z (5.346 23 1.5)"
|
|
else:
|
|
ref_wkt = "POINT Z (5.35 23 1.5)"
|
|
self.assertEqual(ref_wkt, wkt_w.write(ref).decode())
|
|
|
|
def test03_wkbreader(self):
|
|
# Creating a WKBReader instance
|
|
wkb_r = WKBReader()
|
|
|
|
hex_bin = b"000000000140140000000000004037000000000000"
|
|
hex_str = "000000000140140000000000004037000000000000"
|
|
wkb = memoryview(binascii.a2b_hex(hex_bin))
|
|
ref = GEOSGeometry(hex_bin)
|
|
|
|
# read() should return a GEOSGeometry on either a hex string or
|
|
# a WKB buffer.
|
|
g1 = wkb_r.read(wkb)
|
|
g2 = wkb_r.read(hex_bin)
|
|
g3 = wkb_r.read(hex_str)
|
|
for geom in (g1, g2, g3):
|
|
self.assertEqual(ref, geom)
|
|
|
|
bad_input = (1, 5.23, None, False)
|
|
for bad_wkb in bad_input:
|
|
with 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 = b"010100000000000000000014400000000000003740"
|
|
wkb1 = memoryview(binascii.a2b_hex(hex1))
|
|
hex2 = b"000000000140140000000000004037000000000000"
|
|
wkb2 = memoryview(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`
|
|
with 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 = b"0101000080000000000000144000000000000037400000000000003140"
|
|
wkb3d = memoryview(binascii.a2b_hex(hex3d))
|
|
hex3d_srid = (
|
|
b"01010000A0E6100000000000000000144000000000000037400000000000003140"
|
|
)
|
|
wkb3d_srid = memoryview(binascii.a2b_hex(hex3d_srid))
|
|
|
|
# Ensuring bad output dimensions are not accepted
|
|
for bad_outdim in (-1, 0, 1, 4, 423, "foo", None):
|
|
with self.assertRaisesMessage(
|
|
ValueError, "WKB output dimension must be 2 or 3"
|
|
):
|
|
wkb_w.outdim = bad_outdim
|
|
|
|
# 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 include 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 test_wkt_writer_trim(self):
|
|
wkt_w = WKTWriter()
|
|
self.assertFalse(wkt_w.trim)
|
|
self.assertEqual(
|
|
wkt_w.write(Point(1, 1)), b"POINT (1.0000000000000000 1.0000000000000000)"
|
|
)
|
|
|
|
wkt_w.trim = True
|
|
self.assertTrue(wkt_w.trim)
|
|
self.assertEqual(wkt_w.write(Point(1, 1)), b"POINT (1 1)")
|
|
self.assertEqual(wkt_w.write(Point(1.1, 1)), b"POINT (1.1 1)")
|
|
self.assertEqual(
|
|
wkt_w.write(Point(1.0 / 3, 1)), b"POINT (0.3333333333333333 1)"
|
|
)
|
|
|
|
wkt_w.trim = False
|
|
self.assertFalse(wkt_w.trim)
|
|
self.assertEqual(
|
|
wkt_w.write(Point(1, 1)), b"POINT (1.0000000000000000 1.0000000000000000)"
|
|
)
|
|
|
|
def test_wkt_writer_precision(self):
|
|
wkt_w = WKTWriter()
|
|
self.assertIsNone(wkt_w.precision)
|
|
self.assertEqual(
|
|
wkt_w.write(Point(1.0 / 3, 2.0 / 3)),
|
|
b"POINT (0.3333333333333333 0.6666666666666666)",
|
|
)
|
|
|
|
wkt_w.precision = 1
|
|
self.assertEqual(wkt_w.precision, 1)
|
|
self.assertEqual(wkt_w.write(Point(1.0 / 3, 2.0 / 3)), b"POINT (0.3 0.7)")
|
|
|
|
wkt_w.precision = 0
|
|
self.assertEqual(wkt_w.precision, 0)
|
|
self.assertEqual(wkt_w.write(Point(1.0 / 3, 2.0 / 3)), b"POINT (0 1)")
|
|
|
|
wkt_w.precision = None
|
|
self.assertIsNone(wkt_w.precision)
|
|
self.assertEqual(
|
|
wkt_w.write(Point(1.0 / 3, 2.0 / 3)),
|
|
b"POINT (0.3333333333333333 0.6666666666666666)",
|
|
)
|
|
|
|
with self.assertRaisesMessage(
|
|
AttributeError, "WKT output rounding precision must be "
|
|
):
|
|
wkt_w.precision = "potato"
|
|
|
|
def test_empty_point_wkb(self):
|
|
p = Point(srid=4326)
|
|
wkb_w = WKBWriter()
|
|
|
|
wkb_w.srid = False
|
|
with self.assertRaisesMessage(
|
|
ValueError, "Empty point is not representable in WKB."
|
|
):
|
|
wkb_w.write(p)
|
|
with self.assertRaisesMessage(
|
|
ValueError, "Empty point is not representable in WKB."
|
|
):
|
|
wkb_w.write_hex(p)
|
|
|
|
wkb_w.srid = True
|
|
for byteorder, hex in enumerate(
|
|
[
|
|
b"0020000001000010E67FF80000000000007FF8000000000000",
|
|
b"0101000020E6100000000000000000F87F000000000000F87F",
|
|
]
|
|
):
|
|
wkb_w.byteorder = byteorder
|
|
self.assertEqual(wkb_w.write_hex(p), hex)
|
|
self.assertEqual(GEOSGeometry(wkb_w.write_hex(p)), p)
|
|
self.assertEqual(wkb_w.write(p), memoryview(binascii.a2b_hex(hex)))
|
|
self.assertEqual(GEOSGeometry(wkb_w.write(p)), p)
|
|
|
|
def test_empty_polygon_wkb(self):
|
|
p = Polygon(srid=4326)
|
|
p_no_srid = Polygon()
|
|
wkb_w = WKBWriter()
|
|
wkb_w.srid = True
|
|
for byteorder, hexes in enumerate(
|
|
[
|
|
(b"000000000300000000", b"0020000003000010E600000000"),
|
|
(b"010300000000000000", b"0103000020E610000000000000"),
|
|
]
|
|
):
|
|
wkb_w.byteorder = byteorder
|
|
for srid, hex in enumerate(hexes):
|
|
wkb_w.srid = srid
|
|
self.assertEqual(wkb_w.write_hex(p), hex)
|
|
self.assertEqual(
|
|
GEOSGeometry(wkb_w.write_hex(p)), p if srid else p_no_srid
|
|
)
|
|
self.assertEqual(wkb_w.write(p), memoryview(binascii.a2b_hex(hex)))
|
|
self.assertEqual(GEOSGeometry(wkb_w.write(p)), p if srid else p_no_srid)
|