javascript - Testing a Socket.io app, in which two connections interact -

i'm new unit testing nodejs, right want test socket.io server using mocha, app involves interaction of 2 sockets, spec following

var expect = require('expect.js'); var io = require('socket.io-client');  describe("server", function() {     var options = {         transports: ['websocket'],         'force new connection': true     };      var socketone;     var sockettwo;      it("should stuff", function(done) {          socketone = io.connect("http://localhost:3000");          socketone.on("connect", function(data) {             sockettwo = io.connect("http://localhost:3000");              sockettwo.on("connect", function(data) {                 console.log("hellow world");              });         });          socketone.on("connection", function(x) {             console.log(x);             done();         });     });  }); 

by now, want test create 2 socket connections, when run it, seems "socketone" connecting server, sockettwo.on("connection") doesn't called. know doing wrong ?

the socket.io client recycle (multiplex) existing connection, why second 1 isn't firing connect event. prevent this, can disable multiplex specifying {multiplex: false} in connect options. this:

socketone = io.connect("http://localhost:3000");  socketone.on("connect", function(data) {     sockettwo = io.connect("http://localhost:3000", {multiplex: false});      sockettwo.on("connect", function(data) {         console.log("hellow world");      }); });