def test_diff_2(self): a = IntervalVector([[-1, 1], [0, 2], [1, 5]]) b = IntervalVector(a) l = a.diff(b) self.assertEqual(len(l), 1) self.assertEqual(l[0], IntervalVector.empty(3))
def test_empty(self): a = IntervalVector.empty(3) self.assertEqual(a.size(), 3) self.assertEqual(len(a), 3) self.assertTrue(a.is_empty())