| Test WebSocket bad sub-protocol names (empty). | |
| On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". | |
| PASS new WebSocket("ws://127.0.0.1:8880/simple", "") threw exception SyntaxError: Failed to construct 'WebSocket': The subprotocol '' is invalid.. | |
| PASS successfullyParsed is true | |
| TEST COMPLETE | |