def test_necessario(self):
        self.assertTrue(self.seg_p)

        seg_p2 = itau.registros.SegmentoP()
        self.assertFalse(seg_p2.necessario())

        seg_p2.controle_banco = 33
        self.assertFalse(seg_p2.necessario())

        seg_p2.vencimento_titulo = 10102012
        self.assertTrue(seg_p2.necessario())
def active_at_datetime(self, deadline):
        """Check whether the verification was active at a particular datetime.

        Arguments:
            deadline (datetime): The date at which the verification was active
                (created before and expiration datetime is after today).

        Returns:
            bool

        """
        return (
            self.created_at < deadline and
            self.expiration_datetime > now()
        )