def METHOD_NAME(fast_serializable_check):
    with FastCheckSerializable(fast_serializable_check):
        store = anr.PandasSerializer()
        mymock = Mock(return_value=(np.array(['a', 'b', None, 'd']), None))
        if fast_serializable_check:
            store.fast_check_serializable = mymock
        else:
            store._to_records = mymock
        with patch('arctic.serialization.numpy_records.log') as mock_log:
            assert store.can_convert_to_records_without_objects(sentinel.df, 'my_symbol') is False
        mock_log.warning.assert_called_once_with('Pandas dataframe my_symbol contains Objects, saving as Blob')
        if fast_serializable_check:
            store.fast_check_serializable.assert_called_once_with(sentinel.df)
        else:
            store._to_records.assert_called_once_with(sentinel.df)