import ctypes import itertools import json import pickle import random from binascii import a2b_hex from io import BytesIO from unittest import mock, skipIf from django.contrib.gis import gdal from django.contrib.gis.geos import ( GeometryCollection, GEOSException, GEOSGeometry, LinearRing, LineString, MultiLineString, MultiPoint, MultiPolygon, Point, Polygon, fromfile, fromstr, ) from django.contrib.gis.geos.libgeos import geos_version_tuple from django.contrib.gis.shortcuts import numpy from django.template import Context from django.template.engine import Engine from django.test import SimpleTestCase from ..test_data import TestDataMixin class GEOSTest(SimpleTestCase, TestDataMixin): def test_wkt(self): "Testing WKT output." for g in self.geometries.wkt_out: geom = fromstr(g.wkt) if geom.hasz: self.assertEqual(g.ewkt, geom.wkt) def test_hex(self): "Testing HEX output." for g in self.geometries.hex_wkt: geom = fromstr(g.wkt) self.assertEqual(g.hex, geom.hex.decode()) def test_hexewkb(self): "Testing (HEX)EWKB output." # For testing HEX(EWKB). ogc_hex = b'01010000000000000000000000000000000000F03F' ogc_hex_3d = b'01010000800000000000000000000000000000F03F0000000000000040' # `SELECT ST_AsHEXEWKB(ST_GeomFromText('POINT(0 1)', 4326));` hexewkb_2d = b'0101000020E61000000000000000000000000000000000F03F' # `SELECT ST_AsHEXEWKB(ST_GeomFromEWKT('SRID=4326;POINT(0 1 2)'));` hexewkb_3d = b'01010000A0E61000000000000000000000000000000000F03F0000000000000040' pnt_2d = Point(0, 1, srid=4326) pnt_3d = Point(0, 1, 2, srid=4326) # OGC-compliant HEX will not have SRID value. self.assertEqual(ogc_hex, pnt_2d.hex) self.assertEqual(ogc_hex_3d, pnt_3d.hex) # HEXEWKB should be appropriate for its dimension -- have to use an # a WKBWriter w/dimension set accordingly, else GEOS will insert # garbage into 3D coordinate if there is none. self.assertEqual(hexewkb_2d, pnt_2d.hexewkb) self.assertEqual(hexewkb_3d, pnt_3d.hexewkb) self.assertIs(GEOSGeometry(hexewkb_3d).hasz, True) # Same for EWKB. self.assertEqual(memoryview(a2b_hex(hexewkb_2d)), pnt_2d.ewkb) self.assertEqual(memoryview(a2b_hex(hexewkb_3d)), pnt_3d.ewkb) # Redundant sanity check. self.assertEqual(4326, GEOSGeometry(hexewkb_2d).srid) def test_kml(self): "Testing KML output." for tg in self.geometries.wkt_out: geom = fromstr(tg.wkt) kml = getattr(tg, 'kml', False) if kml: self.assertEqual(kml, geom.kml) def test_errors(self): "Testing the Error handlers." # string-based for err in self.geometries.errors: with self.assertRaises((GEOSException, ValueError)): fromstr(err.wkt) # Bad WKB with self.assertRaises(GEOSException): GEOSGeometry(memoryview(b'0')) class NotAGeometry: pass # Some other object with self.assertRaises(TypeError): GEOSGeometry(NotAGeometry()) # None with self.assertRaises(TypeError): GEOSGeometry(None) def test_wkb(self): "Testing WKB output." for g in self.geometries.hex_wkt: geom = fromstr(g.wkt) wkb = geom.wkb self.assertEqual(wkb.hex().upper(), g.hex) def test_create_hex(self): "Testing creation from HEX." for g in self.geometries.hex_wkt: geom_h = GEOSGeometry(g.hex) # we need to do this so decimal places get normalized geom_t = fromstr(g.wkt) self.assertEqual(geom_t.wkt, geom_h.wkt) def test_create_wkb(self): "Testing creation from WKB." for g in self.geometries.hex_wkt: wkb = memoryview(bytes.fromhex(g.hex)) geom_h = GEOSGeometry(wkb) # we need to do this so decimal places get normalized geom_t = fromstr(g.wkt) self.assertEqual(geom_t.wkt, geom_h.wkt) def test_ewkt(self): "Testing EWKT." srids = (-1, 32140) for srid in srids: for p in self.geometries.polygons: ewkt = 'SRID=%d;%s' % (srid, p.wkt) poly = fromstr(ewkt) self.assertEqual(srid, poly.srid) self.assertEqual(srid, poly.shell.srid) self.assertEqual(srid, fromstr(poly.ewkt).srid) # Checking export def test_json(self): "Testing GeoJSON input/output (via GDAL)." for g in self.geometries.json_geoms: geom = GEOSGeometry(g.wkt) if not hasattr(g, 'not_equal'): # Loading jsons to prevent decimal differences self.assertEqual(json.loads(g.json), json.loads(geom.json)) self.assertEqual(json.loads(g.json), json.loads(geom.geojson)) self.assertEqual(GEOSGeometry(g.wkt, 4326), GEOSGeometry(geom.json)) def test_json_srid(self): geojson_data = { "type": "Point", "coordinates": [2, 49], "crs": { "type": "name", "properties": { "name": "urn:ogc:def:crs:EPSG::4322" } } } self.assertEqual(GEOSGeometry(json.dumps(geojson_data)), Point(2, 49, srid=4322)) def test_fromfile(self): "Testing the fromfile() factory." ref_pnt = GEOSGeometry('POINT(5 23)') wkt_f = BytesIO() wkt_f.write(ref_pnt.wkt.encode()) wkb_f = BytesIO() wkb_f.write(bytes(ref_pnt.wkb)) # Other tests use `fromfile()` on string filenames so those # aren't tested here. for fh in (wkt_f, wkb_f): fh.seek(0) pnt = fromfile(fh) self.assertEqual(ref_pnt, pnt) def test_eq(self): "Testing equivalence." p = fromstr('POINT(5 23)') self.assertEqual(p, p.wkt) self.assertNotEqual(p, 'foo') ls = fromstr('LINESTRING(0 0, 1 1, 5 5)') self.assertEqual(ls, ls.wkt) self.assertNotEqual(p, 'bar') self.assertEqual(p, 'POINT(5.0 23.0)') # Error shouldn't be raise on equivalence testing with # an invalid type. for g in (p, ls): self.assertIsNotNone(g) self.assertNotEqual(g, {'foo': 'bar'}) self.assertIsNot(g, False) def test_hash(self): point_1 = Point(5, 23) point_2 = Point(5, 23, srid=4326) point_3 = Point(5, 23, srid=32632) multipoint_1 = MultiPoint(point_1, srid=4326) multipoint_2 = MultiPoint(point_2) multipoint_3 = MultiPoint(point_3) self.assertNotEqual(hash(point_1), hash(point_2)) self.assertNotEqual(hash(point_1), hash(point_3)) self.assertNotEqual(hash(point_2), hash(point_3)) self.assertNotEqual(hash(multipoint_1), hash(multipoint_2)) self.assertEqual(hash(multipoint_2), hash(multipoint_3)) self.assertNotEqual(hash(multipoint_1), hash(point_1)) self.assertNotEqual(hash(multipoint_2), hash(point_2)) self.assertNotEqual(hash(multipoint_3), hash(point_3)) def test_eq_with_srid(self): "Testing non-equivalence with different srids." p0 = Point(5, 23) p1 = Point(5, 23, srid=4326) p2 = Point(5, 23, srid=32632) # GEOS self.assertNotEqual(p0, p1) self.assertNotEqual(p1, p2) # EWKT self.assertNotEqual(p0, p1.ewkt) self.assertNotEqual(p1, p0.ewkt) self.assertNotEqual(p1, p2.ewkt) # Equivalence with matching SRIDs self.assertEqual(p2, p2) self.assertEqual(p2, p2.ewkt) # WKT contains no SRID so will not equal self.assertNotEqual(p2, p2.wkt) # SRID of 0 self.assertEqual(p0, 'SRID=0;POINT (5 23)') self.assertNotEqual(p1, 'SRID=0;POINT (5 23)') def test_points(self): "Testing Point objects." prev = fromstr('POINT(0 0)') for p in self.geometries.points: # Creating the point from the WKT pnt = fromstr(p.wkt) self.assertEqual(pnt.geom_type, 'Point') self.assertEqual(pnt.geom_typeid, 0) self.assertEqual(pnt.dims, 0) self.assertEqual(p.x, pnt.x) self.assertEqual(p.y, pnt.y) self.assertEqual(pnt, fromstr(p.wkt)) self.assertIs(pnt == prev, False) # Use assertIs() to test __eq__. # Making sure that the point's X, Y components are what we expect self.assertAlmostEqual(p.x, pnt.tuple[0], 9) self.assertAlmostEqual(p.y, pnt.tuple[1], 9) # Testing the third dimension, and getting the tuple arguments if hasattr(p, 'z'): self.assertIs(pnt.hasz, True) self.assertEqual(p.z, pnt.z) self.assertEqual(p.z, pnt.tuple[2], 9) tup_args = (p.x, p.y, p.z) set_tup1 = (2.71, 3.14, 5.23) set_tup2 = (5.23, 2.71, 3.14) else: self.assertIs(pnt.hasz, False) self.assertIsNone(pnt.z) tup_args = (p.x, p.y) set_tup1 = (2.71, 3.14) set_tup2 = (3.14, 2.71) # Centroid operation on point should be point itself self.assertEqual(p.centroid, pnt.centroid.tuple) # Now testing the different constructors pnt2 = Point(tup_args) # e.g., Point((1, 2)) pnt3 = Point(*tup_args) # e.g., Point(1, 2) self.assertEqual(pnt, pnt2) self.assertEqual(pnt, pnt3) # Now testing setting the x and y pnt.y = 3.14 pnt.x = 2.71 self.assertEqual(3.14, pnt.y) self.assertEqual(2.71, pnt.x) # Setting via the tuple/coords property pnt.tuple = set_tup1 self.assertEqual(set_tup1, pnt.tuple) pnt.coords = set_tup2 self.assertEqual(set_tup2, pnt.coords) prev = pnt # setting the previous geometry def test_point_reverse(self): point = GEOSGeometry('POINT(144.963 -37.8143)', 4326) self.assertEqual(point.srid, 4326) point.reverse() self.assertEqual(point.ewkt, 'SRID=4326;POINT (-37.8143 144.963)') def test_multipoints(self): "Testing MultiPoint objects." for mp in self.geometries.multipoints: mpnt = fromstr(mp.wkt) self.assertEqual(mpnt.geom_type, 'MultiPoint') self.assertEqual(mpnt.geom_typeid, 4) self.assertEqual(mpnt.dims, 0) self.assertAlmostEqual(mp.centroid[0], mpnt.centroid.tuple[0], 9) self.assertAlmostEqual(mp.centroid[1], mpnt.centroid.tuple[1], 9) with self.assertRaises(IndexError): mpnt.__getitem__(len(mpnt)) self.assertEqual(mp.centroid, mpnt.centroid.tuple) self.assertEqual(mp.coords, tuple(m.tuple for m in mpnt)) for p in mpnt: self.assertEqual(p.geom_type, 'Point') self.assertEqual(p.geom_typeid, 0) self.assertIs(p.empty, False) self.assertIs(p.valid, True) def test_linestring(self): "Testing LineString objects." prev = fromstr('POINT(0 0)') for line in self.geometries.linestrings: ls = fromstr(line.wkt) self.assertEqual(ls.geom_type, 'LineString') self.assertEqual(ls.geom_typeid, 1) self.assertEqual(ls.dims, 1) self.assertIs(ls.empty, False) self.assertIs(ls.ring, False) if hasattr(line, 'centroid'): self.assertEqual(line.centroid, ls.centroid.tuple) if hasattr(line, 'tup'): self.assertEqual(line.tup, ls.tuple) self.assertEqual(ls, fromstr(line.wkt)) self.assertIs(ls == prev, False) # Use assertIs() to test __eq__. with self.assertRaises(IndexError): ls.__getitem__(len(ls)) prev = ls # Creating a LineString from a tuple, list, and numpy array self.assertEqual(ls, LineString(ls.tuple)) # tuple self.assertEqual(ls, LineString(*ls.tuple)) # as individual arguments self.assertEqual(ls, LineString([list(tup) for tup in ls.tuple])) # as list # Point individual arguments self.assertEqual(ls.wkt, LineString(*tuple(Point(tup) for tup in ls.tuple)).wkt) if numpy: self.assertEqual(ls, LineString(numpy.array(ls.tuple))) # as numpy array with self.assertRaisesMessage(TypeError, 'Each coordinate should be a sequence (list or tuple)'): LineString((0, 0)) with self.assertRaisesMessage(ValueError, 'LineString requires at least 2 points, got 1.'): LineString([(0, 0)]) if numpy: with self.assertRaisesMessage(ValueError, 'LineString requires at least 2 points, got 1.'): LineString(numpy.array([(0, 0)])) with mock.patch('django.contrib.gis.geos.linestring.numpy', False): with self.assertRaisesMessage(TypeError, 'Invalid initialization input for LineStrings.'): LineString('wrong input') # Test __iter__(). self.assertEqual(list(LineString((0, 0), (1, 1), (2, 2))), [(0, 0), (1, 1), (2, 2)]) def test_linestring_reverse(self): line = GEOSGeometry('LINESTRING(144.963 -37.8143,151.2607 -33.887)', 4326) self.assertEqual(line.srid, 4326) line.reverse() self.assertEqual(line.ewkt, 'SRID=4326;LINESTRING (151.2607 -33.887, 144.963 -37.8143)') def _test_is_counterclockwise(self): lr = LinearRing((0, 0), (1, 0), (0, 1), (0, 0)) self.assertIs(lr.is_counterclockwise, True) lr.reverse() self.assertIs(lr.is_counterclockwise, False) msg = 'Orientation of an empty LinearRing cannot be determined.' with self.assertRaisesMessage(ValueError, msg): LinearRing().is_counterclockwise @skipIf(geos_version_tuple() < (3, 7), 'GEOS >= 3.7.0 is required') def test_is_counterclockwise(self): self._test_is_counterclockwise() @skipIf(geos_version_tuple() < (3, 7), 'GEOS >= 3.7.0 is required') def test_is_counterclockwise_geos_error(self): with mock.patch('django.contrib.gis.geos.prototypes.cs_is_ccw') as mocked: mocked.return_value = 0 mocked.func_name = 'GEOSCoordSeq_isCCW' msg = 'Error encountered in GEOS C function "GEOSCoordSeq_isCCW".' with self.assertRaisesMessage(GEOSException, msg): LinearRing((0, 0), (1, 0), (0, 1), (0, 0)).is_counterclockwise @mock.patch('django.contrib.gis.geos.libgeos.geos_version', lambda: b'3.6.9') def test_is_counterclockwise_fallback(self): self._test_is_counterclockwise() def test_multilinestring(self): "Testing MultiLineString objects." prev = fromstr('POINT(0 0)') for line in self.geometries.multilinestrings: ml = fromstr(line.wkt) self.assertEqual(ml.geom_type, 'MultiLineString') self.assertEqual(ml.geom_typeid, 5) self.assertEqual(ml.dims, 1) self.assertAlmostEqual(line.centroid[0], ml.centroid.x, 9) self.assertAlmostEqual(line.centroid[1], ml.centroid.y, 9) self.assertEqual(ml, fromstr(line.wkt)) self.assertIs(ml == prev, False) # Use assertIs() to test __eq__. prev = ml for ls in ml: self.assertEqual(ls.geom_type, 'LineString') self.assertEqual(ls.geom_typeid, 1) self.assertIs(ls.empty, False) with self.assertRaises(IndexError): ml.__getitem__(len(ml)) self.assertEqual(ml.wkt, MultiLineString(*tuple(s.clone() for s in ml)).wkt) self.assertEqual(ml, MultiLineString(*tuple(LineString(s.tuple) for s in ml))) def test_linearring(self): "Testing LinearRing objects." for rr in self.geometries.linearrings: lr = fromstr(rr.wkt) self.assertEqual(lr.geom_type, 'LinearRing') self.assertEqual(lr.geom_typeid, 2) self.assertEqual(lr.dims, 1) self.assertEqual(rr.n_p, len(lr)) self.assertIs(lr.valid, True) self.assertIs(lr.empty, False) # Creating a LinearRing from a tuple, list, and numpy array self.assertEqual(lr, LinearRing(lr.tuple)) self.assertEqual(lr, LinearRing(*lr.tuple)) self.assertEqual(lr, LinearRing([list(tup) for tup in lr.tuple])) if numpy: self.assertEqual(lr, LinearRing(numpy.array(lr.tuple))) with self.assertRaisesMessage(ValueError, 'LinearRing requires at least 4 points, got 3.'): LinearRing((0, 0), (1, 1), (0, 0)) with self.assertRaisesMessage(ValueError, 'LinearRing requires at least 4 points, got 1.'): LinearRing([(0, 0)]) if numpy: with self.assertRaisesMessage(ValueError, 'LinearRing requires at least 4 points, got 1.'): LinearRing(numpy.array([(0, 0)])) def test_linearring_json(self): self.assertJSONEqual( LinearRing((0, 0), (0, 1), (1, 1), (0, 0)).json, '{"coordinates": [[0, 0], [0, 1], [1, 1], [0, 0]], "type": "LineString"}', ) def test_polygons_from_bbox(self): "Testing `from_bbox` class method." bbox = (-180, -90, 180, 90) p = Polygon.from_bbox(bbox) self.assertEqual(bbox, p.extent) # Testing numerical precision x = 3.14159265358979323 bbox = (0, 0, 1, x) p = Polygon.from_bbox(bbox) y = p.extent[-1] self.assertEqual(format(x, '.13f'), format(y, '.13f')) def test_polygons(self): "Testing Polygon objects." prev = fromstr('POINT(0 0)') for p in self.geometries.polygons: # Creating the Polygon, testing its properties. poly = fromstr(p.wkt) self.assertEqual(poly.geom_type, 'Polygon') self.assertEqual(poly.geom_typeid, 3) self.assertEqual(poly.dims, 2) self.assertIs(poly.empty, False) self.assertIs(poly.ring, False) self.assertEqual(p.n_i, poly.num_interior_rings) self.assertEqual(p.n_i + 1, len(poly)) # Testing __len__ self.assertEqual(p.n_p, poly.num_points) # Area & Centroid self.assertAlmostEqual(p.area, poly.area, 9) self.assertAlmostEqual(p.centroid[0], poly.centroid.tuple[0], 9) self.assertAlmostEqual(p.centroid[1], poly.centroid.tuple[1], 9) # Testing the geometry equivalence self.assertEqual(poly, fromstr(p.wkt)) # Should not be equal to previous geometry self.assertIs(poly == prev, False) # Use assertIs() to test __eq__. self.assertIs(poly != prev, True) # Use assertIs() to test __ne__. # Testing the exterior ring ring = poly.exterior_ring self.assertEqual(ring.geom_type, 'LinearRing') self.assertEqual(ring.geom_typeid, 2) if p.ext_ring_cs: self.assertEqual(p.ext_ring_cs, ring.tuple) self.assertEqual(p.ext_ring_cs, poly[0].tuple) # Testing __getitem__ # Testing __getitem__ and __setitem__ on invalid indices with self.assertRaises(IndexError): poly.__getitem__(len(poly)) with self.assertRaises(IndexError): poly.__setitem__(len(poly), False) with self.assertRaises(IndexError): poly.__getitem__(-1 * len(poly) - 1) # Testing __iter__ for r in poly: self.assertEqual(r.geom_type, 'LinearRing') self.assertEqual(r.geom_typeid, 2) # Testing polygon construction. with self.assertRaises(TypeError): Polygon(0, [1, 2, 3]) with self.assertRaises(TypeError): Polygon('foo') # Polygon(shell, (hole1, ... holeN)) ext_ring, *int_rings = poly self.assertEqual(poly, Polygon(ext_ring, int_rings)) # Polygon(shell_tuple, hole_tuple1, ... , hole_tupleN) ring_tuples = tuple(r.tuple for r in poly) self.assertEqual(poly, Polygon(*ring_tuples)) # Constructing with tuples of LinearRings. self.assertEqual(poly.wkt, Polygon(*tuple(r for r in poly)).wkt) self.assertEqual(poly.wkt, Polygon(*tuple(LinearRing(r.tuple) for r in poly)).wkt) def test_polygons_templates(self): # Accessing Polygon attributes in templates should work. engine = Engine() template = engine.from_string('{{ polygons.0.wkt }}') polygons = [fromstr(p.wkt) for p in self.geometries.multipolygons[:2]] content = template.render(Context({'polygons': polygons})) self.assertIn('MULTIPOLYGON (((100', content) def test_polygon_comparison(self): p1 = Polygon(((0, 0), (0, 1), (1, 1), (1, 0), (0, 0))) p2 = Polygon(((0, 0), (0, 1), (1, 0), (0, 0))) self.assertGreater(p1, p2) self.assertLess(p2, p1) p3 = Polygon(((0, 0), (0, 1), (1, 1), (2, 0), (0, 0))) p4 = Polygon(((0, 0), (0, 1), (2, 2), (1, 0), (0, 0))) self.assertGreater(p4, p3) self.assertLess(p3, p4) def test_multipolygons(self): "Testing MultiPolygon objects." fromstr('POINT (0 0)') for mp in self.geometries.multipolygons: mpoly = fromstr(mp.wkt) self.assertEqual(mpoly.geom_type, 'MultiPolygon') self.assertEqual(mpoly.geom_typeid, 6) self.assertEqual(mpoly.dims, 2) self.assertEqual(mp.valid, mpoly.valid) if mp.valid: self.assertEqual(mp.num_geom, mpoly.num_geom) self.assertEqual(mp.n_p, mpoly.num_coords) self.assertEqual(mp.num_geom, len(mpoly)) with self.assertRaises(IndexError): mpoly.__getitem__(len(mpoly)) for p in mpoly: self.assertEqual(p.geom_type, 'Polygon') self.assertEqual(p.geom_typeid, 3) self.assertIs(p.valid, True) self.assertEqual(mpoly.wkt, MultiPolygon(*tuple(poly.clone() for poly in mpoly)).wkt) def test_memory_hijinks(self): "Testing Geometry __del__() on rings and polygons." # #### Memory issues with rings and poly # These tests are needed to ensure sanity with writable geometries. # Getting a polygon with interior rings, and pulling out the interior rings poly = fromstr(self.geometries.polygons[1].wkt) ring1 = poly[0] ring2 = poly[1] # These deletes should be 'harmless' since they are done on child geometries del ring1 del ring2 ring1 = poly[0] ring2 = poly[1] # Deleting the polygon del poly # Access to these rings is OK since they are clones. str(ring1) str(ring2) def test_coord_seq(self): "Testing Coordinate Sequence objects." for p in self.geometries.polygons: if p.ext_ring_cs: # Constructing the polygon and getting the coordinate sequence poly = fromstr(p.wkt) cs = poly.exterior_ring.coord_seq self.assertEqual(p.ext_ring_cs, cs.tuple) # done in the Polygon test too. self.assertEqual(len(p.ext_ring_cs), len(cs)) # Making sure __len__ works # Checks __getitem__ and __setitem__ for i in range(len(p.ext_ring_cs)): c1 = p.ext_ring_cs[i] # Expected value c2 = cs[i] # Value from coordseq self.assertEqual(c1, c2) # Constructing the test value to set the coordinate sequence with if len(c1) == 2: tset = (5, 23) else: tset = (5, 23, 8) cs[i] = tset # Making sure every set point matches what we expect for j in range(len(tset)): cs[i] = tset self.assertEqual(tset[j], cs[i][j]) def test_relate_pattern(self): "Testing relate() and relate_pattern()." g = fromstr('POINT (0 0)') with self.assertRaises(GEOSException): g.relate_pattern(0, 'invalid pattern, yo') for rg in self.geometries.relate_geoms: a = fromstr(rg.wkt_a) b = fromstr(rg.wkt_b) self.assertEqual(rg.result, a.relate_pattern(b, rg.pattern)) self.assertEqual(rg.pattern, a.relate(b)) def test_intersection(self): "Testing intersects() and intersection()." for i in range(len(self.geometries.topology_geoms)): a = fromstr(self.geometries.topology_geoms[i].wkt_a) b = fromstr(self.geometries.topology_geoms[i].wkt_b) i1 = fromstr(self.geometries.intersect_geoms[i].wkt) self.assertIs(a.intersects(b), True) i2 = a.intersection(b) self.assertTrue(i1.equals(i2)) self.assertTrue(i1.equals(a & b)) # __and__ is intersection operator a &= b # testing __iand__ self.assertTrue(i1.equals(a)) def test_union(self): "Testing union()." for i in range(len(self.geometries.topology_geoms)): a = fromstr(self.geometries.topology_geoms[i].wkt_a) b = fromstr(self.geometries.topology_geoms[i].wkt_b) u1 = fromstr(self.geometries.union_geoms[i].wkt) u2 = a.union(b) self.assertTrue(u1.equals(u2)) self.assertTrue(u1.equals(a | b)) # __or__ is union operator a |= b # testing __ior__ self.assertTrue(u1.equals(a)) def test_unary_union(self): "Testing unary_union." for i in range(len(self.geometries.topology_geoms)): a = fromstr(self.geometries.topology_geoms[i].wkt_a) b = fromstr(self.geometries.topology_geoms[i].wkt_b) u1 = fromstr(self.geometries.union_geoms[i].wkt) u2 = GeometryCollection(a, b).unary_union self.assertTrue(u1.equals(u2)) def test_difference(self): "Testing difference()." for i in range(len(self.geometries.topology_geoms)): a = fromstr(self.geometries.topology_geoms[i].wkt_a) b = fromstr(self.geometries.topology_geoms[i].wkt_b) d1 = fromstr(self.geometries.diff_geoms[i].wkt) d2 = a.difference(b) self.assertTrue(d1.equals(d2)) self.assertTrue(d1.equals(a - b)) # __sub__ is difference operator a -= b # testing __isub__ self.assertTrue(d1.equals(a)) def test_symdifference(self): "Testing sym_difference()." for i in range(len(self.geometries.topology_geoms)): a = fromstr(self.geometries.topology_geoms[i].wkt_a) b = fromstr(self.geometries.topology_geoms[i].wkt_b) d1 = fromstr(self.geometries.sdiff_geoms[i].wkt) d2 = a.sym_difference(b) self.assertTrue(d1.equals(d2)) self.assertTrue(d1.equals(a ^ b)) # __xor__ is symmetric difference operator a ^= b # testing __ixor__ self.assertTrue(d1.equals(a)) def test_buffer(self): bg = self.geometries.buffer_geoms[0] g = fromstr(bg.wkt) # Can't use a floating-point for the number of quadsegs. with self.assertRaises(ctypes.ArgumentError): g.buffer(bg.width, quadsegs=1.1) self._test_buffer(self.geometries.buffer_geoms, 'buffer') def test_buffer_with_style(self): bg = self.geometries.buffer_with_style_geoms[0] g = fromstr(bg.wkt) # Can't use a floating-point for the number of quadsegs. with self.assertRaises(ctypes.ArgumentError): g.buffer_with_style(bg.width, quadsegs=1.1) # Can't use a floating-point for the end cap style. with self.assertRaises(ctypes.ArgumentError): g.buffer_with_style(bg.width, end_cap_style=1.2) # Can't use a end cap style that is not in the enum. with self.assertRaises(GEOSException): g.buffer_with_style(bg.width, end_cap_style=55) # Can't use a floating-point for the join style. with self.assertRaises(ctypes.ArgumentError): g.buffer_with_style(bg.width, join_style=1.3) # Can't use a join style that is not in the enum. with self.assertRaises(GEOSException): g.buffer_with_style(bg.width, join_style=66) self._test_buffer( itertools.chain(self.geometries.buffer_geoms, self.geometries.buffer_with_style_geoms), 'buffer_with_style', ) def _test_buffer(self, geometries, buffer_method_name): for bg in geometries: g = fromstr(bg.wkt) # The buffer we expect exp_buf = fromstr(bg.buffer_wkt) # Constructing our buffer buf_kwargs = { kwarg_name: getattr(bg, kwarg_name) for kwarg_name in ('width', 'quadsegs', 'end_cap_style', 'join_style', 'mitre_limit') if hasattr(bg, kwarg_name) } buf = getattr(g, buffer_method_name)(**buf_kwargs) self.assertEqual(exp_buf.num_coords, buf.num_coords) self.assertEqual(len(exp_buf), len(buf)) # Now assuring that each point in the buffer is almost equal for j in range(len(exp_buf)): exp_ring = exp_buf[j] buf_ring = buf[j] self.assertEqual(len(exp_ring), len(buf_ring)) for k in range(len(exp_ring)): # Asserting the X, Y of each point are almost equal (due to floating point imprecision) self.assertAlmostEqual(exp_ring[k][0], buf_ring[k][0], 9) self.assertAlmostEqual(exp_ring[k][1], buf_ring[k][1], 9) def test_covers(self): poly = Polygon(((0, 0), (0, 10), (10, 10), (10, 0), (0, 0))) self.assertTrue(poly.covers(Point(5, 5))) self.assertFalse(poly.covers(Point(100, 100))) def test_closed(self): ls_closed = LineString((0, 0), (1, 1), (0, 0)) ls_not_closed = LineString((0, 0), (1, 1)) self.assertFalse(ls_not_closed.closed) self.assertTrue(ls_closed.closed) def test_srid(self): "Testing the SRID property and keyword." # Testing SRID keyword on Point pnt = Point(5, 23, srid=4326) self.assertEqual(4326, pnt.srid) pnt.srid = 3084 self.assertEqual(3084, pnt.srid) with self.assertRaises(ctypes.ArgumentError): pnt.srid = '4326' # Testing SRID keyword on fromstr(), and on Polygon rings. poly = fromstr(self.geometries.polygons[1].wkt, srid=4269) self.assertEqual(4269, poly.srid) for ring in poly: self.assertEqual(4269, ring.srid) poly.srid = 4326 self.assertEqual(4326, poly.shell.srid) # Testing SRID keyword on GeometryCollection gc = GeometryCollection(Point(5, 23), LineString((0, 0), (1.5, 1.5), (3, 3)), srid=32021) self.assertEqual(32021, gc.srid) for i in range(len(gc)): self.assertEqual(32021, gc[i].srid) # GEOS may get the SRID from HEXEWKB # 'POINT(5 23)' at SRID=4326 in hex form -- obtained from PostGIS # using `SELECT GeomFromText('POINT (5 23)', 4326);`. hex = '0101000020E610000000000000000014400000000000003740' p1 = fromstr(hex) self.assertEqual(4326, p1.srid) p2 = fromstr(p1.hex) self.assertIsNone(p2.srid) p3 = fromstr(p1.hex, srid=-1) # -1 is intended. self.assertEqual(-1, p3.srid) # Testing that geometry SRID could be set to its own value pnt_wo_srid = Point(1, 1) pnt_wo_srid.srid = pnt_wo_srid.srid # Input geometries that have an SRID. self.assertEqual(GEOSGeometry(pnt.ewkt, srid=pnt.srid).srid, pnt.srid) self.assertEqual(GEOSGeometry(pnt.ewkb, srid=pnt.srid).srid, pnt.srid) with self.assertRaisesMessage(ValueError, 'Input geometry already has SRID: %d.' % pnt.srid): GEOSGeometry(pnt.ewkt, srid=1) with self.assertRaisesMessage(ValueError, 'Input geometry already has SRID: %d.' % pnt.srid): GEOSGeometry(pnt.ewkb, srid=1) def test_custom_srid(self): """Test with a null srid and a srid unknown to GDAL.""" for srid in [None, 999999]: pnt = Point(111200, 220900, srid=srid) self.assertTrue(pnt.ewkt.startswith(("SRID=%s;" % srid if srid else '') + "POINT (111200")) self.assertIsInstance(pnt.ogr, gdal.OGRGeometry) self.assertIsNone(pnt.srs) # Test conversion from custom to a known srid c2w = gdal.CoordTransform( gdal.SpatialReference( '+proj=mill +lat_0=0 +lon_0=0 +x_0=0 +y_0=0 +R_A +ellps=WGS84 ' '+datum=WGS84 +units=m +no_defs' ), gdal.SpatialReference(4326)) new_pnt = pnt.transform(c2w, clone=True) self.assertEqual(new_pnt.srid, 4326) self.assertAlmostEqual(new_pnt.x, 1, 1) self.assertAlmostEqual(new_pnt.y, 2, 1) def test_mutable_geometries(self): "Testing the mutability of Polygons and Geometry Collections." # ### Testing the mutability of Polygons ### for p in self.geometries.polygons: poly = fromstr(p.wkt) # Should only be able to use __setitem__ with LinearRing geometries. with self.assertRaises(TypeError): poly.__setitem__(0, LineString((1, 1), (2, 2))) # Constructing the new shell by adding 500 to every point in the old shell. shell_tup = poly.shell.tuple new_coords = [] for point in shell_tup: new_coords.append((point[0] + 500., point[1] + 500.)) new_shell = LinearRing(*tuple(new_coords)) # Assigning polygon's exterior ring w/the new shell poly.exterior_ring = new_shell str(new_shell) # new shell is still accessible self.assertEqual(poly.exterior_ring, new_shell) self.assertEqual(poly[0], new_shell) # ### Testing the mutability of Geometry Collections for tg in self.geometries.multipoints: mp = fromstr(tg.wkt) for i in range(len(mp)): # Creating a random point. pnt = mp[i] new = Point(random.randint(21, 100), random.randint(21, 100)) # Testing the assignment mp[i] = new str(new) # what was used for the assignment is still accessible self.assertEqual(mp[i], new) self.assertEqual(mp[i].wkt, new.wkt) self.assertNotEqual(pnt, mp[i]) # MultiPolygons involve much more memory management because each # Polygon w/in the collection has its own rings. for tg in self.geometries.multipolygons: mpoly = fromstr(tg.wkt) for i in range(len(mpoly)): poly = mpoly[i] old_poly = mpoly[i] # Offsetting the each ring in the polygon by 500. for j in range(len(poly)): r = poly[j] for k in range(len(r)): r[k] = (r[k][0] + 500., r[k][1] + 500.) poly[j] = r self.assertNotEqual(mpoly[i], poly) # Testing the assignment mpoly[i] = poly str(poly) # Still accessible self.assertEqual(mpoly[i], poly) self.assertNotEqual(mpoly[i], old_poly) # Extreme (!!) __setitem__ -- no longer works, have to detect # in the first object that __setitem__ is called in the subsequent # objects -- maybe mpoly[0, 0, 0] = (3.14, 2.71)? # mpoly[0][0][0] = (3.14, 2.71) # self.assertEqual((3.14, 2.71), mpoly[0][0][0]) # Doing it more slowly.. # self.assertEqual((3.14, 2.71), mpoly[0].shell[0]) # del mpoly def test_point_list_assignment(self): p = Point(0, 0) p[:] = (1, 2, 3) self.assertEqual(p, Point(1, 2, 3)) p[:] = () self.assertEqual(p.wkt, Point()) p[:] = (1, 2) self.assertEqual(p.wkt, Point(1, 2)) with self.assertRaises(ValueError): p[:] = (1,) with self.assertRaises(ValueError): p[:] = (1, 2, 3, 4, 5) def test_linestring_list_assignment(self): ls = LineString((0, 0), (1, 1)) ls[:] = () self.assertEqual(ls, LineString()) ls[:] = ((0, 0), (1, 1), (2, 2)) self.assertEqual(ls, LineString((0, 0), (1, 1), (2, 2))) with self.assertRaises(ValueError): ls[:] = (1,) def test_linearring_list_assignment(self): ls = LinearRing((0, 0), (0, 1), (1, 1), (0, 0)) ls[:] = () self.assertEqual(ls, LinearRing()) ls[:] = ((0, 0), (0, 1), (1, 1), (1, 0), (0, 0)) self.assertEqual(ls, LinearRing((0, 0), (0, 1), (1, 1), (1, 0), (0, 0))) with self.assertRaises(ValueError): ls[:] = ((0, 0), (1, 1), (2, 2)) def test_polygon_list_assignment(self): pol = Polygon() pol[:] = (((0, 0), (0, 1), (1, 1), (1, 0), (0, 0)),) self.assertEqual(pol, Polygon(((0, 0), (0, 1), (1, 1), (1, 0), (0, 0)),)) pol[:] = () self.assertEqual(pol, Polygon()) def test_geometry_collection_list_assignment(self): p = Point() gc = GeometryCollection() gc[:] = [p] self.assertEqual(gc, GeometryCollection(p)) gc[:] = () self.assertEqual(gc, GeometryCollection()) def test_threed(self): "Testing three-dimensional geometries." # Testing a 3D Point pnt = Point(2, 3, 8) self.assertEqual((2., 3., 8.), pnt.coords) with self.assertRaises(TypeError): pnt.tuple = (1., 2.) pnt.coords = (1., 2., 3.) self.assertEqual((1., 2., 3.), pnt.coords) # Testing a 3D LineString ls = LineString((2., 3., 8.), (50., 250., -117.)) self.assertEqual(((2., 3., 8.), (50., 250., -117.)), ls.tuple) with self.assertRaises(TypeError): ls.__setitem__(0, (1., 2.)) ls[0] = (1., 2., 3.) self.assertEqual((1., 2., 3.), ls[0]) def test_distance(self): "Testing the distance() function." # Distance to self should be 0. pnt = Point(0, 0) self.assertEqual(0.0, pnt.distance(Point(0, 0))) # Distance should be 1 self.assertEqual(1.0, pnt.distance(Point(0, 1))) # Distance should be ~ sqrt(2) self.assertAlmostEqual(1.41421356237, pnt.distance(Point(1, 1)), 11) # Distances are from the closest vertex in each geometry -- # should be 3 (distance from (2, 2) to (5, 2)). ls1 = LineString((0, 0), (1, 1), (2, 2)) ls2 = LineString((5, 2), (6, 1), (7, 0)) self.assertEqual(3, ls1.distance(ls2)) def test_length(self): "Testing the length property." # Points have 0 length. pnt = Point(0, 0) self.assertEqual(0.0, pnt.length) # Should be ~ sqrt(2) ls = LineString((0, 0), (1, 1)) self.assertAlmostEqual(1.41421356237, ls.length, 11) # Should be circumference of Polygon poly = Polygon(LinearRing((0, 0), (0, 1), (1, 1), (1, 0), (0, 0))) self.assertEqual(4.0, poly.length) # Should be sum of each element's length in collection. mpoly = MultiPolygon(poly.clone(), poly) self.assertEqual(8.0, mpoly.length) def test_emptyCollections(self): "Testing empty geometries and collections." geoms = [ GeometryCollection([]), fromstr('GEOMETRYCOLLECTION EMPTY'), GeometryCollection(), fromstr('POINT EMPTY'), Point(), fromstr('LINESTRING EMPTY'), LineString(), fromstr('POLYGON EMPTY'), Polygon(), fromstr('MULTILINESTRING EMPTY'), MultiLineString(), fromstr('MULTIPOLYGON EMPTY'), MultiPolygon(()), MultiPolygon(), ] if numpy: geoms.append(LineString(numpy.array([]))) for g in geoms: self.assertIs(g.empty, True) # Testing len() and num_geom. if isinstance(g, Polygon): self.assertEqual(1, len(g)) # Has one empty linear ring self.assertEqual(1, g.num_geom) self.assertEqual(0, len(g[0])) elif isinstance(g, (Point, LineString)): self.assertEqual(1, g.num_geom) self.assertEqual(0, len(g)) else: self.assertEqual(0, g.num_geom) self.assertEqual(0, len(g)) # Testing __getitem__ (doesn't work on Point or Polygon) if isinstance(g, Point): # IndexError is not raised in GEOS 3.8.0. if geos_version_tuple() != (3, 8, 0): with self.assertRaises(IndexError): g.x elif isinstance(g, Polygon): lr = g.shell self.assertEqual('LINEARRING EMPTY', lr.wkt) self.assertEqual(0, len(lr)) self.assertIs(lr.empty, True) with self.assertRaises(IndexError): lr.__getitem__(0) else: with self.assertRaises(IndexError): g.__getitem__(0) def test_collection_dims(self): gc = GeometryCollection([]) self.assertEqual(gc.dims, -1) gc = GeometryCollection(Point(0, 0)) self.assertEqual(gc.dims, 0) gc = GeometryCollection(LineString((0, 0), (1, 1)), Point(0, 0)) self.assertEqual(gc.dims, 1) gc = GeometryCollection(LineString((0, 0), (1, 1)), Polygon(((0, 0), (0, 1), (1, 1), (0, 0))), Point(0, 0)) self.assertEqual(gc.dims, 2) def test_collections_of_collections(self): "Testing GeometryCollection handling of other collections." # Creating a GeometryCollection WKT string composed of other # collections and polygons. coll = [mp.wkt for mp in self.geometries.multipolygons if mp.valid] coll.extend(mls.wkt for mls in self.geometries.multilinestrings) coll.extend(p.wkt for p in self.geometries.polygons) coll.extend(mp.wkt for mp in self.geometries.multipoints) gc_wkt = 'GEOMETRYCOLLECTION(%s)' % ','.join(coll) # Should construct ok from WKT gc1 = GEOSGeometry(gc_wkt) # Should also construct ok from individual geometry arguments. gc2 = GeometryCollection(*tuple(g for g in gc1)) # And, they should be equal. self.assertEqual(gc1, gc2) def test_gdal(self): "Testing `ogr` and `srs` properties." g1 = fromstr('POINT(5 23)') self.assertIsInstance(g1.ogr, gdal.OGRGeometry) self.assertIsNone(g1.srs) g1_3d = fromstr('POINT(5 23 8)') self.assertIsInstance(g1_3d.ogr, gdal.OGRGeometry) self.assertEqual(g1_3d.ogr.z, 8) g2 = fromstr('LINESTRING(0 0, 5 5, 23 23)', srid=4326) self.assertIsInstance(g2.ogr, gdal.OGRGeometry) self.assertIsInstance(g2.srs, gdal.SpatialReference) self.assertEqual(g2.hex, g2.ogr.hex) self.assertEqual('WGS 84', g2.srs.name) def test_copy(self): "Testing use with the Python `copy` module." import copy poly = GEOSGeometry('POLYGON((0 0, 0 23, 23 23, 23 0, 0 0), (5 5, 5 10, 10 10, 10 5, 5 5))') cpy1 = copy.copy(poly) cpy2 = copy.deepcopy(poly) self.assertNotEqual(poly._ptr, cpy1._ptr) self.assertNotEqual(poly._ptr, cpy2._ptr) def test_transform(self): "Testing `transform` method." orig = GEOSGeometry('POINT (-104.609 38.255)', 4326) trans = GEOSGeometry('POINT (992385.4472045 481455.4944650)', 2774) # Using a srid, a SpatialReference object, and a CoordTransform object # for transformations. t1, t2, t3 = orig.clone(), orig.clone(), orig.clone() t1.transform(trans.srid) t2.transform(gdal.SpatialReference('EPSG:2774')) ct = gdal.CoordTransform(gdal.SpatialReference('WGS84'), gdal.SpatialReference(2774)) t3.transform(ct) # Testing use of the `clone` keyword. k1 = orig.clone() k2 = k1.transform(trans.srid, clone=True) self.assertEqual(k1, orig) self.assertNotEqual(k1, k2) # Different PROJ versions use different transformations, all are # correct as having a 1 meter accuracy. prec = -1 for p in (t1, t2, t3, k2): self.assertAlmostEqual(trans.x, p.x, prec) self.assertAlmostEqual(trans.y, p.y, prec) def test_transform_3d(self): p3d = GEOSGeometry('POINT (5 23 100)', 4326) p3d.transform(2774) self.assertAlmostEqual(p3d.z, 100, 3) def test_transform_noop(self): """ Testing `transform` method (SRID match) """ # transform() should no-op if source & dest SRIDs match, # regardless of whether GDAL is available. g = GEOSGeometry('POINT (-104.609 38.255)', 4326) gt = g.tuple g.transform(4326) self.assertEqual(g.tuple, gt) self.assertEqual(g.srid, 4326) g = GEOSGeometry('POINT (-104.609 38.255)', 4326) g1 = g.transform(4326, clone=True) self.assertEqual(g1.tuple, g.tuple) self.assertEqual(g1.srid, 4326) self.assertIsNot(g1, g, "Clone didn't happen") def test_transform_nosrid(self): """ Testing `transform` method (no SRID or negative SRID) """ g = GEOSGeometry('POINT (-104.609 38.255)', srid=None) with self.assertRaises(GEOSException): g.transform(2774) g = GEOSGeometry('POINT (-104.609 38.255)', srid=None) with self.assertRaises(GEOSException): g.transform(2774, clone=True) g = GEOSGeometry('POINT (-104.609 38.255)', srid=-1) with self.assertRaises(GEOSException): g.transform(2774) g = GEOSGeometry('POINT (-104.609 38.255)', srid=-1) with self.assertRaises(GEOSException): g.transform(2774, clone=True) def test_extent(self): "Testing `extent` method." # The xmin, ymin, xmax, ymax of the MultiPoint should be returned. mp = MultiPoint(Point(5, 23), Point(0, 0), Point(10, 50)) self.assertEqual((0.0, 0.0, 10.0, 50.0), mp.extent) pnt = Point(5.23, 17.8) # Extent of points is just the point itself repeated. self.assertEqual((5.23, 17.8, 5.23, 17.8), pnt.extent) # Testing on the 'real world' Polygon. poly = fromstr(self.geometries.polygons[3].wkt) ring = poly.shell x, y = ring.x, ring.y xmin, ymin = min(x), min(y) xmax, ymax = max(x), max(y) self.assertEqual((xmin, ymin, xmax, ymax), poly.extent) def test_pickle(self): "Testing pickling and unpickling support." # Creating a list of test geometries for pickling, # and setting the SRID on some of them. def get_geoms(lst, srid=None): return [GEOSGeometry(tg.wkt, srid) for tg in lst] tgeoms = get_geoms(self.geometries.points) tgeoms.extend(get_geoms(self.geometries.multilinestrings, 4326)) tgeoms.extend(get_geoms(self.geometries.polygons, 3084)) tgeoms.extend(get_geoms(self.geometries.multipolygons, 3857)) tgeoms.append(Point(srid=4326)) tgeoms.append(Point()) for geom in tgeoms: s1 = pickle.dumps(geom) g1 = pickle.loads(s1) self.assertEqual(geom, g1) self.assertEqual(geom.srid, g1.srid) def test_prepared(self): "Testing PreparedGeometry support." # Creating a simple multipolygon and getting a prepared version. mpoly = GEOSGeometry('MULTIPOLYGON(((0 0,0 5,5 5,5 0,0 0)),((5 5,5 10,10 10,10 5,5 5)))') prep = mpoly.prepared # A set of test points. pnts = [Point(5, 5), Point(7.5, 7.5), Point(2.5, 7.5)] for pnt in pnts: # Results should be the same (but faster) self.assertEqual(mpoly.contains(pnt), prep.contains(pnt)) self.assertEqual(mpoly.intersects(pnt), prep.intersects(pnt)) self.assertEqual(mpoly.covers(pnt), prep.covers(pnt)) self.assertTrue(prep.crosses(fromstr('LINESTRING(1 1, 15 15)'))) self.assertTrue(prep.disjoint(Point(-5, -5))) poly = Polygon(((-1, -1), (1, 1), (1, 0), (-1, -1))) self.assertTrue(prep.overlaps(poly)) poly = Polygon(((-5, 0), (-5, 5), (0, 5), (-5, 0))) self.assertTrue(prep.touches(poly)) poly = Polygon(((-1, -1), (-1, 11), (11, 11), (11, -1), (-1, -1))) self.assertTrue(prep.within(poly)) # Original geometry deletion should not crash the prepared one (#21662) del mpoly self.assertTrue(prep.covers(Point(5, 5))) def test_line_merge(self): "Testing line merge support" ref_geoms = (fromstr('LINESTRING(1 1, 1 1, 3 3)'), fromstr('MULTILINESTRING((1 1, 3 3), (3 3, 4 2))'), ) ref_merged = (fromstr('LINESTRING(1 1, 3 3)'), fromstr('LINESTRING (1 1, 3 3, 4 2)'), ) for geom, merged in zip(ref_geoms, ref_merged): self.assertEqual(merged, geom.merged) def test_valid_reason(self): "Testing IsValidReason support" g = GEOSGeometry("POINT(0 0)") self.assertTrue(g.valid) self.assertIsInstance(g.valid_reason, str) self.assertEqual(g.valid_reason, "Valid Geometry") g = GEOSGeometry("LINESTRING(0 0, 0 0)") self.assertFalse(g.valid) self.assertIsInstance(g.valid_reason, str) self.assertTrue(g.valid_reason.startswith("Too few points in geometry component")) def test_linearref(self): "Testing linear referencing" ls = fromstr('LINESTRING(0 0, 0 10, 10 10, 10 0)') mls = fromstr('MULTILINESTRING((0 0, 0 10), (10 0, 10 10))') self.assertEqual(ls.project(Point(0, 20)), 10.0) self.assertEqual(ls.project(Point(7, 6)), 24) self.assertEqual(ls.project_normalized(Point(0, 20)), 1.0 / 3) self.assertEqual(ls.interpolate(10), Point(0, 10)) self.assertEqual(ls.interpolate(24), Point(10, 6)) self.assertEqual(ls.interpolate_normalized(1.0 / 3), Point(0, 10)) self.assertEqual(mls.project(Point(0, 20)), 10) self.assertEqual(mls.project(Point(7, 6)), 16) self.assertEqual(mls.interpolate(9), Point(0, 9)) self.assertEqual(mls.interpolate(17), Point(10, 7)) def test_deconstructible(self): """ Geometry classes should be deconstructible. """ point = Point(4.337844, 50.827537, srid=4326) path, args, kwargs = point.deconstruct() self.assertEqual(path, 'django.contrib.gis.geos.point.Point') self.assertEqual(args, (4.337844, 50.827537)) self.assertEqual(kwargs, {'srid': 4326}) ls = LineString(((0, 0), (1, 1))) path, args, kwargs = ls.deconstruct() self.assertEqual(path, 'django.contrib.gis.geos.linestring.LineString') self.assertEqual(args, (((0, 0), (1, 1)),)) self.assertEqual(kwargs, {}) ls2 = LineString([Point(0, 0), Point(1, 1)], srid=4326) path, args, kwargs = ls2.deconstruct() self.assertEqual(path, 'django.contrib.gis.geos.linestring.LineString') self.assertEqual(args, ([Point(0, 0), Point(1, 1)],)) self.assertEqual(kwargs, {'srid': 4326}) ext_coords = ((0, 0), (0, 1), (1, 1), (1, 0), (0, 0)) int_coords = ((0.4, 0.4), (0.4, 0.6), (0.6, 0.6), (0.6, 0.4), (0.4, 0.4)) poly = Polygon(ext_coords, int_coords) path, args, kwargs = poly.deconstruct() self.assertEqual(path, 'django.contrib.gis.geos.polygon.Polygon') self.assertEqual(args, (ext_coords, int_coords)) self.assertEqual(kwargs, {}) lr = LinearRing((0, 0), (0, 1), (1, 1), (0, 0)) path, args, kwargs = lr.deconstruct() self.assertEqual(path, 'django.contrib.gis.geos.linestring.LinearRing') self.assertEqual(args, ((0, 0), (0, 1), (1, 1), (0, 0))) self.assertEqual(kwargs, {}) mp = MultiPoint(Point(0, 0), Point(1, 1)) path, args, kwargs = mp.deconstruct() self.assertEqual(path, 'django.contrib.gis.geos.collections.MultiPoint') self.assertEqual(args, (Point(0, 0), Point(1, 1))) self.assertEqual(kwargs, {}) ls1 = LineString((0, 0), (1, 1)) ls2 = LineString((2, 2), (3, 3)) mls = MultiLineString(ls1, ls2) path, args, kwargs = mls.deconstruct() self.assertEqual(path, 'django.contrib.gis.geos.collections.MultiLineString') self.assertEqual(args, (ls1, ls2)) self.assertEqual(kwargs, {}) p1 = Polygon(((0, 0), (0, 1), (1, 1), (0, 0))) p2 = Polygon(((1, 1), (1, 2), (2, 2), (1, 1))) mp = MultiPolygon(p1, p2) path, args, kwargs = mp.deconstruct() self.assertEqual(path, 'django.contrib.gis.geos.collections.MultiPolygon') self.assertEqual(args, (p1, p2)) self.assertEqual(kwargs, {}) poly = Polygon(((0, 0), (0, 1), (1, 1), (0, 0))) gc = GeometryCollection(Point(0, 0), MultiPoint(Point(0, 0), Point(1, 1)), poly) path, args, kwargs = gc.deconstruct() self.assertEqual(path, 'django.contrib.gis.geos.collections.GeometryCollection') self.assertEqual(args, (Point(0, 0), MultiPoint(Point(0, 0), Point(1, 1)), poly)) self.assertEqual(kwargs, {}) def test_subclassing(self): """ GEOSGeometry subclass may itself be subclassed without being forced-cast to the parent class during `__init__`. """ class ExtendedPolygon(Polygon): def __init__(self, *args, data=0, **kwargs): super().__init__(*args, **kwargs) self._data = data def __str__(self): return "EXT_POLYGON - data: %d - %s" % (self._data, self.wkt) ext_poly = ExtendedPolygon(((0, 0), (0, 1), (1, 1), (0, 0)), data=3) self.assertEqual(type(ext_poly), ExtendedPolygon) # ExtendedPolygon.__str__ should be called (instead of Polygon.__str__). self.assertEqual(str(ext_poly), "EXT_POLYGON - data: 3 - POLYGON ((0 0, 0 1, 1 1, 0 0))") self.assertJSONEqual( ext_poly.json, '{"coordinates": [[[0, 0], [0, 1], [1, 1], [0, 0]]], "type": "Polygon"}', ) def test_geos_version_tuple(self): versions = ( (b'3.0.0rc4-CAPI-1.3.3', (3, 0, 0)), (b'3.0.0-CAPI-1.4.1', (3, 0, 0)), (b'3.4.0dev-CAPI-1.8.0', (3, 4, 0)), (b'3.4.0dev-CAPI-1.8.0 r0', (3, 4, 0)), (b'3.6.2-CAPI-1.10.2 4d2925d6', (3, 6, 2)), ) for version_string, version_tuple in versions: with self.subTest(version_string=version_string): with mock.patch('django.contrib.gis.geos.libgeos.geos_version', lambda: version_string): self.assertEqual(geos_version_tuple(), version_tuple) def test_from_gml(self): self.assertEqual( GEOSGeometry('POINT(0 0)'), GEOSGeometry.from_gml( '' ' 0 0' '' ), ) def test_from_ewkt(self): self.assertEqual(GEOSGeometry.from_ewkt('SRID=1;POINT(1 1)'), Point(1, 1, srid=1)) self.assertEqual(GEOSGeometry.from_ewkt('POINT(1 1)'), Point(1, 1)) def test_from_ewkt_empty_string(self): msg = 'Expected WKT but got an empty string.' with self.assertRaisesMessage(ValueError, msg): GEOSGeometry.from_ewkt('') with self.assertRaisesMessage(ValueError, msg): GEOSGeometry.from_ewkt('SRID=1;') def test_from_ewkt_invalid_srid(self): msg = 'EWKT has invalid SRID part.' with self.assertRaisesMessage(ValueError, msg): GEOSGeometry.from_ewkt('SRUD=1;POINT(1 1)') with self.assertRaisesMessage(ValueError, msg): GEOSGeometry.from_ewkt('SRID=WGS84;POINT(1 1)') def test_fromstr_scientific_wkt(self): self.assertEqual(GEOSGeometry('POINT(1.0e-1 1.0e+1)'), Point(.1, 10)) def test_normalize(self): g = MultiPoint(Point(0, 0), Point(2, 2), Point(1, 1)) self.assertIsNone(g.normalize()) self.assertTrue(g.equals_exact(MultiPoint(Point(2, 2), Point(1, 1), Point(0, 0)))) def test_empty_point(self): p = Point(srid=4326) self.assertEqual(p.ogr.ewkt, p.ewkt) self.assertEqual(p.transform(2774, clone=True), Point(srid=2774)) p.transform(2774) self.assertEqual(p, Point(srid=2774)) def test_linestring_iter(self): ls = LineString((0, 0), (1, 1)) it = iter(ls) # Step into CoordSeq iterator. next(it) ls[:] = [] with self.assertRaises(IndexError): next(it)