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Diffstat (limited to 'tests/test_extensions/test_geo.py')
| -rw-r--r-- | tests/test_extensions/test_geo.py | 430 |
1 files changed, 430 insertions, 0 deletions
diff --git a/tests/test_extensions/test_geo.py b/tests/test_extensions/test_geo.py new file mode 100644 index 0000000..5de1f80 --- /dev/null +++ b/tests/test_extensions/test_geo.py @@ -0,0 +1,430 @@ +from itertools import chain +import unittest +import warnings + +from lxml import etree + +from feedgen.feed import FeedGenerator +from feedgen.ext.geo_entry import GeoRSSPolygonInteriorWarning, GeoRSSGeometryError # noqa: E501 + + +class Geom(object): + """ + Dummy geom to make testing easier + + When we use the geo-interface we need a class with a `__geo_interface__` + property. Makes it easier for the other tests as well. + + Ultimately this could be used to generate dummy geometries for testing + a wider variety of values (e.g. with the faker library, or the hypothesis + library) + """ + + def __init__(self, geom_type, coords): + self.geom_type = geom_type + self.coords = coords + + def __str__(self): + if self.geom_type == 'Point': + + coords = '{:f} {:f}'.format( + self.coords[1], # latitude is y + self.coords[0] + ) + return coords + + elif self.geom_type == 'LineString': + + coords = ' '.join( + '{:f} {:f}'.format(vertex[1], vertex[0]) + for vertex in + self.coords + ) + return coords + + elif self.geom_type == 'Polygon': + + coords = ' '.join( + '{:f} {:f}'.format(vertex[1], vertex[0]) + for vertex in + self.coords[0] + ) + return coords + + elif self.geom_type == 'Box': + # box not really supported by GeoJSON, but it's a handy cheat here + # for testing + coords = ' '.join( + '{:f} {:f}'.format(vertex[1], vertex[0]) + for vertex in + self.coords + ) + return coords[:2] + + else: + return 'Not a supported geometry' + + @property + def __geo_interface__(self): + return { + 'type': self.geom_type, + 'coordinates': self.coords + } + + +class TestExtensionGeo(unittest.TestCase): + + @classmethod + def setUpClass(cls): + cls.point = Geom('Point', [-71.05, 42.36]) + cls.line = Geom('LineString', [[-71.05, 42.36], [-71.15, 42.46]]) + cls.polygon = Geom( + 'Polygon', + [[[-71.05, 42.36], [-71.15, 42.46], [-71.15, 42.36]]] + ) + cls.box = Geom('Box', [[-71.05, 42.36], [-71.15, 42.46]]) + cls.polygon_with_interior = Geom( + 'Polygon', + [ + [ # exterior + [0, 0], + [0, 1], + [1, 1], + [1, 0], + [0, 0] + ], + [ # interior + [0.25, 0.25], + [0.25, 0.75], + [0.75, 0.75], + [0.75, 0.25], + [0.25, 0.25] + ] + ] + ) + + def setUp(self): + self.fg = FeedGenerator() + self.fg.load_extension('geo') + self.fg.title('title') + self.fg.link(href='http://example.com', rel='self') + self.fg.description('description') + + def test_point(self): + fe = self.fg.add_item() + fe.title('y') + fe.geo.point(str(self.point)) + + self.assertEqual(fe.geo.point(), str(self.point)) + + # Check that we have the item in the resulting XML + ns = {'georss': 'http://www.georss.org/georss'} + root = etree.fromstring(self.fg.rss_str()) + point = root.xpath('/rss/channel/item/georss:point/text()', + namespaces=ns) + self.assertEqual(point, [str(self.point)]) + + def test_line(self): + fe = self.fg.add_item() + fe.title('y') + fe.geo.line(str(self.line)) + + self.assertEqual(fe.geo.line(), str(self.line)) + + # Check that we have the item in the resulting XML + ns = {'georss': 'http://www.georss.org/georss'} + root = etree.fromstring(self.fg.rss_str()) + line = root.xpath( + '/rss/channel/item/georss:line/text()', + namespaces=ns + ) + self.assertEqual(line, [str(self.line)]) + + def test_polygon(self): + fe = self.fg.add_item() + fe.title('y') + fe.geo.polygon(str(self.polygon)) + + self.assertEqual(fe.geo.polygon(), str(self.polygon)) + + # Check that we have the item in the resulting XML + ns = {'georss': 'http://www.georss.org/georss'} + root = etree.fromstring(self.fg.rss_str()) + poly = root.xpath( + '/rss/channel/item/georss:polygon/text()', + namespaces=ns + ) + self.assertEqual(poly, [str(self.polygon)]) + + def test_box(self): + fe = self.fg.add_item() + fe.title('y') + fe.geo.box(str(self.box)) + + self.assertEqual(fe.geo.box(), str(self.box)) + + # Check that we have the item in the resulting XML + ns = {'georss': 'http://www.georss.org/georss'} + root = etree.fromstring(self.fg.rss_str()) + box = root.xpath( + '/rss/channel/item/georss:box/text()', + namespaces=ns + ) + self.assertEqual(box, [str(self.box)]) + + def test_featuretypetag(self): + fe = self.fg.add_item() + fe.title('y') + fe.geo.featuretypetag('city') + + self.assertEqual(fe.geo.featuretypetag(), 'city') + + # Check that we have the item in the resulting XML + ns = {'georss': 'http://www.georss.org/georss'} + root = etree.fromstring(self.fg.rss_str()) + featuretypetag = root.xpath( + '/rss/channel/item/georss:featuretypetag/text()', + namespaces=ns + ) + self.assertEqual(featuretypetag, ['city']) + + def test_relationshiptag(self): + fe = self.fg.add_item() + fe.title('y') + fe.geo.relationshiptag('is-centred-at') + + self.assertEqual(fe.geo.relationshiptag(), 'is-centred-at') + + # Check that we have the item in the resulting XML + ns = {'georss': 'http://www.georss.org/georss'} + root = etree.fromstring(self.fg.rss_str()) + relationshiptag = root.xpath( + '/rss/channel/item/georss:relationshiptag/text()', + namespaces=ns + ) + self.assertEqual(relationshiptag, ['is-centred-at']) + + def test_featurename(self): + fe = self.fg.add_item() + fe.title('y') + fe.geo.featurename('Footscray') + + self.assertEqual(fe.geo.featurename(), 'Footscray') + + # Check that we have the item in the resulting XML + ns = {'georss': 'http://www.georss.org/georss'} + root = etree.fromstring(self.fg.rss_str()) + featurename = root.xpath( + '/rss/channel/item/georss:featurename/text()', + namespaces=ns + ) + self.assertEqual(featurename, ['Footscray']) + + def test_elev(self): + fe = self.fg.add_item() + fe.title('y') + fe.geo.elev(100.3) + + self.assertEqual(fe.geo.elev(), 100.3) + + # Check that we have the item in the resulting XML + ns = {'georss': 'http://www.georss.org/georss'} + root = etree.fromstring(self.fg.rss_str()) + elev = root.xpath( + '/rss/channel/item/georss:elev/text()', + namespaces=ns + ) + self.assertEqual(elev, ['100.3']) + + def test_elev_fails_nonnumeric(self): + fe = self.fg.add_item() + fe.title('y') + + with self.assertRaises(ValueError): + fe.geo.elev('100.3') + + def test_floor(self): + fe = self.fg.add_item() + fe.title('y') + fe.geo.floor(4) + + self.assertEqual(fe.geo.floor(), 4) + + # Check that we have the item in the resulting XML + ns = {'georss': 'http://www.georss.org/georss'} + root = etree.fromstring(self.fg.rss_str()) + floor = root.xpath( + '/rss/channel/item/georss:floor/text()', + namespaces=ns + ) + self.assertEqual(floor, ['4']) + + def test_floor_fails_nonint(self): + fe = self.fg.add_item() + fe.title('y') + + with self.assertRaises(ValueError): + fe.geo.floor(100.3) + + with self.assertRaises(ValueError): + fe.geo.floor('4') + + def test_radius(self): + fe = self.fg.add_item() + fe.title('y') + fe.geo.radius(100.3) + + self.assertEqual(fe.geo.radius(), 100.3) + + # Check that we have the item in the resulting XML + ns = {'georss': 'http://www.georss.org/georss'} + root = etree.fromstring(self.fg.rss_str()) + radius = root.xpath( + '/rss/channel/item/georss:radius/text()', + namespaces=ns + ) + self.assertEqual(radius, ['100.3']) + + def test_radius_fails_nonnumeric(self): + fe = self.fg.add_item() + fe.title('y') + + with self.assertRaises(ValueError): + fe.geo.radius('100.3') + + def test_geom_from_geointerface_point(self): + fe = self.fg.add_item() + fe.title('y') + fe.geo.geom_from_geo_interface(self.point) + + self.assertEqual(fe.geo.point(), str(self.point)) + + # Check that we have the item in the resulting XML + ns = {'georss': 'http://www.georss.org/georss'} + root = etree.fromstring(self.fg.rss_str()) + point = root.xpath('/rss/channel/item/georss:point/text()', + namespaces=ns) + self.assertEqual(point, [str(self.point)]) + + coords = [float(c) for c in point[0].split()] + + try: + self.assertCountEqual( + coords, + self.point.coords + ) + except AttributeError: # was assertItemsEqual in Python 2.7 + self.assertItemsEqual( + coords, + self.point.coords + ) + + def test_geom_from_geointerface_line(self): + fe = self.fg.add_item() + fe.title('y') + fe.geo.geom_from_geo_interface(self.line) + + self.assertEqual(fe.geo.line(), str(self.line)) + + # Check that we have the item in the resulting XML + ns = {'georss': 'http://www.georss.org/georss'} + root = etree.fromstring(self.fg.rss_str()) + line = root.xpath('/rss/channel/item/georss:line/text()', + namespaces=ns) + self.assertEqual(line, [str(self.line)]) + + coords = [float(c) for c in line[0].split()] + + try: + self.assertCountEqual( + coords, + list(chain.from_iterable(self.line.coords)) + ) + except AttributeError: # was assertItemsEqual in Python 2.7 + self.assertItemsEqual( + coords, + list(chain.from_iterable(self.line.coords)) + ) + + def test_geom_from_geointerface_poly(self): + fe = self.fg.add_item() + fe.title('y') + fe.geo.geom_from_geo_interface(self.polygon) + + self.assertEqual(fe.geo.polygon(), str(self.polygon)) + + # Check that we have the item in the resulting XML + ns = {'georss': 'http://www.georss.org/georss'} + root = etree.fromstring(self.fg.rss_str()) + poly = root.xpath('/rss/channel/item/georss:polygon/text()', + namespaces=ns) + self.assertEqual(poly, [str(self.polygon)]) + + coords = [float(c) for c in poly[0].split()] + + try: + self.assertCountEqual( + coords, + list(chain.from_iterable(self.polygon.coords[0])) + ) + except AttributeError: # was assertItemsEqual in Python 2.7 + self.assertItemsEqual( + coords, + list(chain.from_iterable(self.polygon.coords[0])) + ) + + def test_geom_from_geointerface_fail_other_geom(self): + fe = self.fg.add_item() + fe.title('y') + + with self.assertRaises(GeoRSSGeometryError): + fe.geo.geom_from_geo_interface(self.box) + + def test_geom_from_geointerface_fail_requires_geo_interface(self): + fe = self.fg.add_item() + fe.title('y') + + with self.assertRaises(AttributeError): + fe.geo.geom_from_geo_interface(str(self.box)) + + def test_geom_from_geointerface_warn_poly_interior(self): + """ + Test complex polygons warn as expected. Taken from + + https://stackoverflow.com/a/3892301/379566 and + https://docs.python.org/2.7/library/warnings.html#testing-warnings + """ + fe = self.fg.add_item() + fe.title('y') + + with warnings.catch_warnings(record=True) as w: + # Cause all warnings to always be triggered. + warnings.simplefilter("always") + # Trigger a warning. + fe.geo.geom_from_geo_interface(self.polygon_with_interior) + # Verify some things + self.assertEqual(len(w), 1) + self.assertTrue(issubclass(w[-1].category, + GeoRSSPolygonInteriorWarning)) + + self.assertEqual(fe.geo.polygon(), str(self.polygon_with_interior)) + + # Check that we have the item in the resulting XML + ns = {'georss': 'http://www.georss.org/georss'} + root = etree.fromstring(self.fg.rss_str()) + poly = root.xpath('/rss/channel/item/georss:polygon/text()', + namespaces=ns) + self.assertEqual(poly, [str(self.polygon_with_interior)]) + + coords = [float(c) for c in poly[0].split()] + + try: + self.assertCountEqual( + coords, + list(chain.from_iterable(self.polygon_with_interior.coords[0])) + ) + except AttributeError: # was assertItemsEqual in Python 2.7 + self.assertItemsEqual( + coords, + list(chain.from_iterable(self.polygon_with_interior.coords[0])) + ) |