def setUp(self) -> None:
self.list = SinglyLinkedList()
self.list.add_last(5)
self.list.add_last(10)
self.list.add_last(7)
self.list.add_last(8)
self.list.add_last(1)
def test_peek_last_empty(self):
_list = SinglyLinkedList()
self.assertIsNone(_list.peek_last())
def test_is_empty(self):
_list = SinglyLinkedList()
self.assertTrue(_list.is_empty)
def test_remove_first_from_empty(self):
empty_list = SinglyLinkedList()
with self.assertRaises(RuntimeError):
empty_list.remove_first()
def test_add_last_empty(self):
_list = SinglyLinkedList()
_list.add_last(10)
self.assertEqual([x for x in _list], [10])
def test_index_of_empty(self):
_list = SinglyLinkedList()
index = _list.indexof(4)
self.assertEqual(index, -1)
def test_remove_at_index_high(self):
_list = SinglyLinkedList()
with self.assertRaises(IndexError):
_list.remove(10)
def test_add_at_index_last(self):
_list = SinglyLinkedList()
_list.add_last(1)
_list.add_last(10)
_list.add(5, 2)
self.assertEqual([x for x in _list], [1, 10, 5])
def test_add_at_index_first(self):
_list = SinglyLinkedList()
_list.add(1, 0)
self.assertEqual([x for x in _list], [1])