Test null handling of several Document attributes On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". * cookie attribute PASS document.cookie is "" document.cookie = 'key=value' PASS document.cookie is "key=value" document.cookie = null FAIL document.cookie should be key=value; null=. Was key=value; null. * title attribute PASS document.title is "" document.title = null PASS document.title is "null" * domain attribute PASS document.domain is "127.0.0.1" PASS document.domain = null threw exception SecurityError (DOM Exception 18): The operation is insecure.. PASS document.domain is "127.0.0.1" PASS successfullyParsed is true TEST COMPLETE