def test_invalid_channel(self):
    with self.assertRaises(ValueError):
        client = googlemaps.Client(client_id='foo', client_secret='a2V5', channel='auieauie$? ')
def test_invalid_channel(self):
    with self.assertRaises(ValueError):
        client = googlemaps.Client(client_id='foo', client_secret='a2V5', channel='auieauie$? ')