def testAddFirst(self): linkedList = DblLinkedList() linkedList.addFirst(2) linkedList.addFirst(3) self.assertEqual(2, linkedList.size) self.assertEqual(linkedList.getFirst(), 3) self.assertEqual(linkedList.getLast(), 2)
def testIsEmptyNot(self): linkedList = DblLinkedList() linkedList.addFirst(2) self.assertFalse(linkedList.isEmpty())