def test_link_list(self):
lst = LinkList()
a = (3, 35, -5, 7, 10)
lst.create(a)
lst.head.print()
p = lst.head
for b in a:
assert b == p.val
p = p.next
new = 55
lst.insert(1, new)
p = lst.head
p = p.next
assert new == p.val
