@attr(type=['negative', 'gate'])
    def test_show_non_existent_network(self):
        self.assertRaises(exceptions.NotFound, self.client.show_network,
                          '12345')

    @attr(type=['negative', 'gate'])
    def test_show_non_existent_subnet(self):
        self.assertRaises(exceptions.NotFound, self.client.show_subnet,
                          '12345')