def METHOD_NAME(self, make_region):
    """Test get_cacheregion."""
    # The argument (request) doesn't get used, so we'll just pass None.
    region = server.get_cacheregion(None)
    make_region.assert_called_once_with()
    assert region is make_region.return_value
    region.configure_from_config.assert_called_once_with({'some': 'config'}, 'dogpile.cache.')