def test_extend(self):
a = Partition([[1,2,3],[4,5],[8],[6,7]])
b = a.extend(3, [6]).extend(0, [1,2])
c = Partition([[3],[5,4],[8],[7],[6],[1,2]])
self.assertEqual(b,c)
def test_extend(self):
a = Partition([[1,2,3],[4,5],[8],[6,7]])
b = a.extend(3, [6]).extend(0, [1,2])
c = Partition([[3],[5,4],[8],[7],[6],[1,2]])
self.assertEqual(b,c)
