Test if Web Socket is closed on unload

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

PASS ws on master document is ready.
PASS insert a iframe, where open ws called 'socket1'
PASS 'socket1' is sent to the server. unload the iframe. expect receiving 'socket1' on ws...
PASS closedSocket is "socket1"
PASS successfullyParsed is true

TEST COMPLETE

