def test_len_random(self):
for t in range(1000):
nodes_count = random.randint(0, 10)
ls = OrderedList(True)
for i in range(nodes_count):
ls.add(random.randint(0, 10))
data = ls.len()
res = nodes_count
self.assertEqual(data, res)
def test_len_void(self):
ls = OrderedList(True)
data = ls.len()
res = 0
self.assertEqual(data, res)
