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177 lines
5.3 KiB
Python
177 lines
5.3 KiB
Python
# Copyright (c) 2008-2009 Aryeh Leib Taurog, all rights reserved.
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# Modified from original contribution by Aryeh Leib Taurog, which was
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# released under the New BSD license.
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import unittest
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from unittest import skipUnless
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from django.contrib.gis.geos import (
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HAS_GEOS, LinearRing, LineString, MultiPoint, Point, Polygon, fromstr,
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)
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def api_get_distance(x):
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return x.distance(Point(-200, -200))
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def api_get_buffer(x):
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return x.buffer(10)
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def api_get_geom_typeid(x):
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return x.geom_typeid
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def api_get_num_coords(x):
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return x.num_coords
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def api_get_centroid(x):
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return x.centroid
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def api_get_empty(x):
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return x.empty
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def api_get_valid(x):
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return x.valid
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def api_get_simple(x):
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return x.simple
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def api_get_ring(x):
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return x.ring
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def api_get_boundary(x):
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return x.boundary
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def api_get_convex_hull(x):
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return x.convex_hull
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def api_get_extent(x):
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return x.extent
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def api_get_area(x):
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return x.area
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def api_get_length(x):
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return x.length
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geos_function_tests = [
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val for name, val in vars().items()
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if hasattr(val, '__call__') and name.startswith('api_get_')
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]
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@skipUnless(HAS_GEOS, "Geos is required.")
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class GEOSMutationTest(unittest.TestCase):
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"""
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Tests Pythonic Mutability of Python GEOS geometry wrappers
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get/set/delitem on a slice, normal list methods
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"""
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def test00_GEOSIndexException(self):
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'Testing Geometry IndexError'
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p = Point(1, 2)
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for i in range(-2, 2):
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p._checkindex(i)
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with self.assertRaises(IndexError):
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p._checkindex(2)
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with self.assertRaises(IndexError):
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p._checkindex(-3)
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def test01_PointMutations(self):
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'Testing Point mutations'
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for p in (Point(1, 2, 3), fromstr('POINT (1 2 3)')):
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self.assertEqual(p._get_single_external(1), 2.0, 'Point _get_single_external')
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# _set_single
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p._set_single(0, 100)
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self.assertEqual(p.coords, (100.0, 2.0, 3.0), 'Point _set_single')
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# _set_list
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p._set_list(2, (50, 3141))
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self.assertEqual(p.coords, (50.0, 3141.0), 'Point _set_list')
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def test02_PointExceptions(self):
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'Testing Point exceptions'
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with self.assertRaises(TypeError):
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Point(range(1))
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with self.assertRaises(TypeError):
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Point(range(4))
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def test03_PointApi(self):
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'Testing Point API'
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q = Point(4, 5, 3)
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for p in (Point(1, 2, 3), fromstr('POINT (1 2 3)')):
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p[0:2] = [4, 5]
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for f in geos_function_tests:
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self.assertEqual(f(q), f(p), 'Point ' + f.__name__)
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def test04_LineStringMutations(self):
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'Testing LineString mutations'
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for ls in (LineString((1, 0), (4, 1), (6, -1)),
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fromstr('LINESTRING (1 0,4 1,6 -1)')):
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self.assertEqual(ls._get_single_external(1), (4.0, 1.0), 'LineString _get_single_external')
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# _set_single
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ls._set_single(0, (-50, 25))
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self.assertEqual(ls.coords, ((-50.0, 25.0), (4.0, 1.0), (6.0, -1.0)), 'LineString _set_single')
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# _set_list
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ls._set_list(2, ((-50.0, 25.0), (6.0, -1.0)))
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self.assertEqual(ls.coords, ((-50.0, 25.0), (6.0, -1.0)), 'LineString _set_list')
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lsa = LineString(ls.coords)
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for f in geos_function_tests:
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self.assertEqual(f(lsa), f(ls), 'LineString ' + f.__name__)
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def test05_Polygon(self):
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'Testing Polygon mutations'
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for pg in (Polygon(((1, 0), (4, 1), (6, -1), (8, 10), (1, 0)),
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((5, 4), (6, 4), (6, 3), (5, 4))),
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fromstr('POLYGON ((1 0,4 1,6 -1,8 10,1 0),(5 4,6 4,6 3,5 4))')):
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self.assertEqual(pg._get_single_external(0),
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LinearRing((1, 0), (4, 1), (6, -1), (8, 10), (1, 0)),
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'Polygon _get_single_external(0)')
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self.assertEqual(pg._get_single_external(1),
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LinearRing((5, 4), (6, 4), (6, 3), (5, 4)),
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'Polygon _get_single_external(1)')
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# _set_list
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pg._set_list(2, (((1, 2), (10, 0), (12, 9), (-1, 15), (1, 2)), ((4, 2), (5, 2), (5, 3), (4, 2))))
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self.assertEqual(
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pg.coords,
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(((1.0, 2.0), (10.0, 0.0), (12.0, 9.0), (-1.0, 15.0), (1.0, 2.0)),
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((4.0, 2.0), (5.0, 2.0), (5.0, 3.0), (4.0, 2.0))),
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'Polygon _set_list')
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lsa = Polygon(*pg.coords)
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for f in geos_function_tests:
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self.assertEqual(f(lsa), f(pg), 'Polygon ' + f.__name__)
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def test06_Collection(self):
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'Testing Collection mutations'
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points = (
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MultiPoint(*map(Point, ((3, 4), (-1, 2), (5, -4), (2, 8)))),
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fromstr('MULTIPOINT (3 4,-1 2,5 -4,2 8)'),
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)
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for mp in points:
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self.assertEqual(mp._get_single_external(2), Point(5, -4), 'Collection _get_single_external')
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mp._set_list(3, map(Point, ((5, 5), (3, -2), (8, 1))))
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self.assertEqual(mp.coords, ((5.0, 5.0), (3.0, -2.0), (8.0, 1.0)), 'Collection _set_list')
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lsa = MultiPoint(*map(Point, ((5, 5), (3, -2), (8, 1))))
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for f in geos_function_tests:
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self.assertEqual(f(lsa), f(mp), 'MultiPoint ' + f.__name__)
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