Socket-io load test?

test.js

/**
 * Modify the parts you need to get it working.
 */

var should = require('should');
var request = require('../node_modules/request');
var io = require('socket.io-client');

var serverUrl = 'http://localhost';

var options = {
    transports: ['xhr-polling'],
    'force new connection': true
};

describe("socket-io server", function () {

    var clients = [];

    it('Should manage 100 rapid connecting/reconnecting users', function (done) {

        var connectionInterval = 250;
        var numberOfUsersToConnect = 100;
        var connections = 0;
        var connectionTimestampSum = 0;

        for (var i = 1; i <= numberOfUsersToConnect; i++) {
            (function (index) {

            	var userIndex = (index - 1) % (testUsers.length - 1);
                
                setTimeout(function () {

    			var time = Date.now();

					var client = new SocketIoClient(serverUrl, {
						onConnected: function () {
							connections++;
		
							connectionTimestampSum += Date.now() - time;
								
							log((connections) + "/" + numberOfUsersToConnect + " connected! (" + (Date.now() - time )+ "ms)");
		
							clients.push(client);
		
							if (index == numberOfUsersToConnect) {
								log("Average connect time: " + Math.round(connectionTimestampSum / connections) + " ms!");
								log("");
								setTimeout(function() {
									done();
								}, 2000);
							}
						}
					});

                }, index * connectionInterval);
            })(i);
        }
    });

    it('Should successfully send messages between clients', function (done) {

        log("");
        log("Client length: " + clients.length);
        log("");

        var chosenMessenger = Math.round(Math.random() % clients.length) % clients.length,
            clientsReceived = 0,
            sentTimestamp = 0,
            receiveTimeSum = 0,
            message = "Hello other clients!";
        
        // Bind event to all connected clients:
        for (var i = 0; i < clients.length; i++) {
            (function (index) {
                var event = function (newPost) {

                    clientsReceived++;
                    receiveTimeSum += Date.now() - sentTimestamp;

                    log("Received " + (clientsReceived) + "/" + clients.length + " messages!");

                    if (clientsReceived == clients.length - 1) {

                        log("Average receive time: " + Math.round(receiveTimeSum / clientsReceived) + " ms!");
                        log("");

                        setTimeout(function () {
                            done();
                        }, 2000);
                    }
                }

                clients[index].on('newPost all', event);
            })(i);
        }

        // Send the message from one - to all the other clients:
        sentTimestamp = Date.now();
        clients[chosenMessenger].postMessage(message);

    });

});

function log(message) {
    process.stdout.write("\n\t\t" + message);
}

function SocketIoClient(connectionString, eventObject) {
    // Establish socket connection to the node server:
    var socket = this.socket = io.connect(connectionString, options);

    this.eventObject = eventObject || {};
    this.eventObject.onConnected = eventObject.onConnected || function () { };
    this.eventObject.onError = eventObject.onError || function () { };


    this.socket.on('connect', function () {
        eventObject.onConnected();
    });

    this.socket.on('error', function (incomingError) {
        eventObject.onError(incomingError);
    });

    this.socket.on('disconnect', function () {
        eventObject.onDisconnect();
    });
}

SocketIoClient.prototype = {
    'disconnect': function() {
        this.socket.disconnect();
    },
    
    'postMessage': function(message) {
        this.socket.emit('post', {
            message: message
        });
    },
    
    'on': function () {
        this.socket.on.apply(this.socket, arguments);
    }
}