1 This test checks to see if document.head is available, readonly, and the same element as what we would expect by getting it by other means.
3 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
6 PASS document.head is document.getElementsByTagName('head')[0]
7 PASS document.head !== 1 is true
8 PASS document.head is null
9 PASS successfullyParsed is true