def test_insert_void(self):
n1 = Node(1)
s_list = LinkedList()
s_list.insert(None, n1)
ht = s_list.get_head_tail()
data = ht + s_list.list_all_nodes()
res = [n1, n1, 1]
self.assertEqual(data, res)
def test_insert_end_2(self):
n1 = Node(1)
n2 = Node(2)
s_list = LinkedList()
s_list.add_in_tail(n1)
s_list.insert(n1, n2)
ht = s_list.get_head_tail()
data = ht + s_list.list_all_nodes()
res = [n1, n2, 1, 2]
self.assertEqual(data, res)
def test_insert_middle(self):
n1 = Node(1)
n2 = Node(2)
n3 = Node(3)
s_list = LinkedList()
s_list.add_in_tail(n1)
s_list.add_in_tail(n3)
s_list.insert(n1, n2)
ht = s_list.get_head_tail()
data = ht + s_list.list_all_nodes()
res = [n1, n3, 1, 2, 3]
self.assertEqual(data, res)