+}
+
+test(function ()
+{
+ var root = createSampleDOM();
+ var walker = document.createTreeWalker(root);
+ check_walker(walker, root);
+}, 'Construct a TreeWalker by document.createTreeWalker(root).');
+
+test(function ()
+{
+ var root = createSampleDOM();
+ var walker = document.createTreeWalker(root, undefined, undefined);
+ check_walker(walker, root);
+}, 'Construct a TreeWalker by document.createTreeWalker(root, undefined, undefined).');