added: do not expect a error message for successful QUIT commands

test/command_quit.js

@@ -11,6 +11,7 @@ describe("QUIT OK", function () {
             let mockedSock = new EventEmitter()
 
             mockedSock.write = function (data) {
+                done("ERROR: did not expect a message")
             }
 
             server.emit('connection', mockedSock)