1 CONSOLE ERROR: line 15: WebSocket connection to 'ws://localhost:8880/handshake-fail-by-no-accept-header' failed: Error during WebSocket handshake: 'Sec-WebSocket-Accept' header is missing
2 Test whether WebSocket handshake fails if the server does not send Sec-WebSocket-Accept header.
4 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
6 PASS onerror() was called
7 PASS closeEvent.wasClean is false
8 PASS successfullyParsed is true