This tests that when tabindex is updated on an element, the children are re-computed.

On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".


PASS group.childAtIndex(0).parentElement().isEqual(group) is true
PASS button.parentElement().isEqual(group) is true
PASS group.parentElement().isEqual(main) is true
PASS main.childAtIndex(0).isEqual(group) is true
PASS main.childAtIndex(0).isEqual(button) === true
PASS button.parentElement().isEqual(main) === true
PASS successfullyParsed is true

TEST COMPLETE
 test