Test of exception forwarding for NodeIterator and TreeWalker, derived from an early version of Acid3 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". PASS i.nextNode() threw exception Roses. PASS i.nextNode() is document.documentElement PASS i.previousNode() threw exception Roses. PASS w.nextNode() threw exception Roses. PASS w.nextNode() is document.documentElement.firstChild PASS w.previousNode() threw exception Roses. PASS w.firstChild() threw exception Roses. PASS w.lastChild() threw exception Roses. PASS w.nextSibling() threw exception Roses. PASS w.previousSibling() is null PASS w.nextSibling() is document.body.previousSibling PASS w.previousSibling() is document.head PASS iteration is 11 PASS successfullyParsed is true TEST COMPLETE