def test_cut(self):
gt = [0, 0, 0, 1, 1, 1, 1, 1, 2, 3, 3]
est = [0, 0, 0, 1, 1, 1, 0, 0, 2, 3, 3]
cm = ConfMatrix(4, labelset = self.makelabelset(4))
cm.add(gt, est)
self.assertEqual(sum(sum(cm.cm[2:, 2:])), 3)
cm.cut(2)
self.assertEqual(cm.cm[2, 2], 3)
