'Test with invalid keys plus some extra.'

def test_validate_config_invalid_keys(self):

    config = copy(TEST_CONFIG['sensor'])
    config.update({'a': 'test_a', 'b': 'test_b', 'c': 'test_c'})
    with assert_setup_component(0, 'sensor'):
        assert setup_component(self.hass, 'sensor', {'tcp': config})
