--TEST-- Checks that the shift() method of DoublyLinkedList does not accept args. --CREDITS-- PHPNW Test Fest 2009 - Rick Ogden --FILE-- <?php $ll = new SplDoublyLinkedList(); $ll->push(1); $ll->push(2); var_dump($ll->shift(1)); ?> --EXPECTF-- Warning: SplDoublyLinkedList::shift() expects exactly 0 parameters, 1 given in %s on line %d NULL