def test_too_much(self):
my_list = LinkedList([1, 2, 3, 4])
with self.assertRaises(ValueError):
my_list.rotate(5)
with self.assertRaises(ValueError):
my_list.rotate(999)
def test_no_rotation(self):
my_list = LinkedList([1, 2, 3, 4])
my_list.rotate(0)
self.assertEqual(my_list.to_list(), [1, 2, 3, 4])
def test_negative(self):
my_list = LinkedList([1, 2, 3, 4])
with self.assertRaises(ValueError):
my_list.rotate(-1)
def test_whole(self):
my_list = LinkedList([1, 2, 3, 4])
my_list.rotate(4)
self.assertEqual(my_list.to_list(), [1, 2, 3, 4])
def test_three(self):
my_list = LinkedList([1, 2, 3, 4])
my_list.rotate(3)
self.assertEqual(my_list.to_list(), [4, 1, 2, 3])
def test_two(self):
my_list = LinkedList([1, 2, 3, 4])
my_list.rotate(2)
self.assertEqual(my_list.to_list(), [3, 4, 1, 2])
def test_one(self):
my_list = LinkedList([1, 2, 3, 4])
my_list.rotate(1)
self.assertEqual(my_list.to_list(), [2, 3, 4, 1])
