/**
  * Check that we don't cause recursion errors with array_multisort() and circular dependencies
  */
 public function testSortWithCircularDependencies()
 {
     $itemA = new stdClass();
     $childA = new stdClass();
     $itemA->child = $childA;
     $childA->parent = $itemA;
     $itemA->Sort = 1;
     $itemB = new stdClass();
     $childB = new stdClass();
     $itemB->child = $childB;
     $childB->parent = $itemB;
     $itemB->Sort = 1;
     $items = new ArrayList();
     $items->add($itemA);
     $items->add($itemB);
     // This call will trigger a fatal error if there are issues with circular dependencies
     $items->sort('Sort');
 }