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 i1beta_lq(i1, beta, lq, ax=0):
    """creates a surface plot of ld vs i1, beta"""
    if ax == 0:
        _create_3d_axis()
        ax = plt.gca()
    azim = 60
    if 0 < np.mean(beta) or -90 > np.mean(beta):
        azim = -120
    _plot_surface(ax, i1, beta, np.asarray(lq)*1e3,
                  (u'I1/A', u'Beta/°', u'Lq/mH'),
                  azim=azim)