Steps test Step 1: Do something Step 2: Do another thing Step 3: Do one last thing This tests that if aria-hidden changes on an element, all it's existing children will update their children caches On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". PASS main.childrenCount is 1 PASS main.childrenCount is 2 PASS main.childAtIndex(1).childrenCount is 1 PASS successfullyParsed is true TEST COMPLETE