1 Test whether WebSocket ignores unsolicited negotiation response.
3 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
6 PASS ws.extensions is "permessage-deflate; server_max_window_bits=15; server_no_context_takeover"
7 PASS event.wasClean is true
8 PASS successfullyParsed is true