How to use geojson - 10 common examples

def test_cant_create_aoi_with_non_multipolygon_type(self):
        # Arrange
        bad_geom = geojson.Polygon(
            [[(2.38, 57.322), (23.194, -20.28), (-120.43, 19.15), (2.38, 57.322)]]
        )
        bad_feature = geojson.Feature(geometry=bad_geom)
        # bad_feature_collection = geojson.FeatureCollection([bad_feature])

        # Act / Assert
        with self.assertRaises(InvalidGeoJson):
            # Only geometries of type MultiPolygon are valid
            GridService.merge_to_multi_polygon(
                geojson.dumps(bad_feature), dissolve=True
            )

def test_has(self):
        """Test has filter function"""
        ff = create_filter(['has', 'a'])
        passing = Feature(geometry=line_geometry, properties=dict(a=1))
        failing = Feature(geometry=line_geometry, properties=dict(b=3))
        self.assertTrue(ff(passing))
        self.assertFalse(ff(failing))

def test_invalid(self):
        with self.assertRaises(ValueError) as cm:
            geojson.loads('{"type":"Point", "coordinates":[[-Infinity, 4.0]]}')

        self.assertIn('is not JSON compliant', str(cm.exception))

' "properties":'
                ' {"link": "http://example.org/features/1",'
                ' "summary": "The first feature",'
                ' "title": "Feature 1"},'
                ' "type": "Feature"}')
        self.assertEqual(geojson.dumps(feature, sort_keys=True), json)

        # Decoding
        factory = geojson.examples.create_simple_web_feature
        json = ('{"geometry": {"type": "Point",'
                ' "coordinates": [53.0, -4.0]},'
                ' "id": "1",'
                ' "properties": {"summary": "The first feature",'
                ' "link": "http://example.org/features/1",'
                ' "title": "Feature 1"}}')
        feature = geojson.loads(json, object_hook=factory, encoding="utf-8")
        self.assertEqual(repr(type(feature)),
                         "")
        self.assertEqual(feature.id, '1')
        self.assertEqual(feature.properties['title'], 'Feature 1')
        self.assertEqual(feature.properties['summary'], 'The first feature')
        self.assertEqual(feature.properties['link'],
                         'http://example.org/features/1')
        self.assertEqual(geojson.dumps(feature.geometry, sort_keys=True),
                         '{"coordinates": [53.0, -4.0], "type": "Point"}')

def test_feature_collection_to_multi_polygon_nodissolve(self):
        # arrange
        grid_json = get_canned_json("test_grid.json")
        grid_dto = GridDTO(grid_json)
        expected = geojson.loads(json.dumps(get_canned_json("multi_polygon.json")))
        aoi_geojson = geojson.loads(json.dumps(grid_dto.area_of_interest))

        # act
        result = GridService.merge_to_multi_polygon(aoi_geojson, False)

        # assert
        self.assertEqual(str(expected), str(result))

def _raises_on_dump(self, unstrict):
        with self.assertRaises(ValueError):
            geojson.dumps(unstrict)

def test_crs_decode(self):
        dumped = geojson.dumps(self.crs)
        actual = geojson.loads(dumped)
        self.assertEqual(actual, self.crs)

def test_featurecollection(self):
        p1 = geojson.Feature(geometry=geojson.Point((-115.11, 37.11)))
        p2 = geojson.Feature(geometry=geojson.Point((-115.22, 37.22)))
        itr = coords(geojson.FeatureCollection([p1, p2]))
        pairs = list(itr)
        self.assertEqual(pairs[0], (-115.11, 37.11))
        self.assertEqual(pairs[1], (-115.22, 37.22))

def test_valid_jsonobject(self):
        point = geojson.Point((-10.52, 2.33))
        self.assertEqual(point.is_valid, True)

def test_invalid_geometrycollection(self):
        point = geojson.Point((10, 20))
        bad_poly = geojson.Polygon([[(2.38, 57.322), (23.194, -20.28),
                                   (-120.43, 19.15), (25.44, -17.91)]])

        geom_collection = geojson.GeometryCollection(
                geometries=[point, bad_poly]
            )
        self.assertFalse(geom_collection.is_valid)