1 This test checks parsing of menuitem tag which is a self closing tag with no end tag.
3 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
6 PASS document.getElementById('div').innerHTML is "<menuitem>"
7 PASS document.getElementById('menu').innerHTML is "<menuitem id=\"first_item\"><menuitem id=\"second_item\">"
8 PASS document.getElementById('first_item').firstChild is null
9 PASS document.getElementById('menu').firstChild.nextSibling is document.getElementById('second_item')
10 PASS successfullyParsed is true