def test_issue_06():
    import logging

    logger = logging.getLogger("test")
    logger.setLevel(logging.DEBUG)
    ch = logging.StreamHandler()
    ch.setLevel(logging.DEBUG)
    logger.addHandler(ch)
    output = StringIO()
    book = p.Book({"hoja1": [["datos", "de", "prueba"], [1, 2, 3]]})
    book.save_to_memory("csv", output)
    logger.debug(output.getvalue())