add basic integration tests

test/fixture/index.js

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+var express = require('express'),
+    connect   = require('connect'),
+    passport  = require('passport'),
+    http = require('http');
+
+var socketIo = require('socket.io'),
+    passportSocketIo = require('../../lib');
+
+var sessionStore    = new connect.session.MemoryStore(),
+    cookieSecret  = 'asdasdsdas1312312',
+    sessionKey    = 'test-session-key';
+
+var server;
+
+require('./setupPassport');
+
+exports.start = function (callback) {
+  var app = express();
+  app.configure(function(){
+    app.use(express.cookieParser(cookieSecret));
+   
+    app.use(express.bodyParser());
+    app.use(express.methodOverride());
+    
+    app.use(express.session({
+      store: sessionStore,
+      key: sessionKey
+    }));
+
+    app.use(passport.initialize());
+    app.use(passport.session());
+
+  });
+
+  app.post('/login', passport.authenticate('local', { successRedirect: '/',
+                                                      failureRedirect: '/login',
+                                                      failureFlash: true }));
+
+  app.get('/', function(req, res){
+    if(!req.user){
+      res.send(401);
+    }else{
+      res.json(req.user);
+    }
+  });
+
+  server = http.createServer(app);
+
+  var sio = socketIo.listen(server);
+  sio.configure(function(){
+    this.set('authorization', passportSocketIo.authorize({
+      sessionKey:    sessionKey,
+      sessionStore:  sessionStore,
+      sessionSecret: cookieSecret
+    }));
+
+    this.set('log level', 0);
+
+  });
+
+  sio.sockets.on('echo', function (m) {
+    sio.sockets.emit('echo-response', m);
+  });
+
+  server.listen(9000, callback);
+};
+
+exports.stop = function (callback) {
+  server.close();
+  callback();
+};

test/fixture/setSocketIOHandshakeCookies.js

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+var xmlhttprequest = require('xmlhttprequest');
+var originalRequest = xmlhttprequest.XMLHttpRequest;
+
+module.exports = function (jar) {
+  xmlhttprequest.XMLHttpRequest = function(){
+    originalRequest.apply(this, arguments);
+    this.setDisableHeaderCheck(true);
+    
+    var stdOpen = this.open;
+
+    this.open = function() {
+      stdOpen.apply(this, arguments);
+      var header = jar.get({ url: 'http://localhost:9000' })
+        .map(function (c) {
+          return c.name + "=" + c.value;
+        }).join("; ");
+      this.setRequestHeader('cookie', header);
+    };
+  };
+};

test/fixture/setupPassport.js

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+var passport = require('passport'),
+  LocalStrategy = require('passport-local').Strategy;
+
+passport.use(new LocalStrategy(
+  function(username, password, done) {
+    if(username === 'jose' && password === 'Pa123'){
+      return done(null, {
+        name: 'jose',
+        mail: 'j@f.r'
+      });
+    } else {
+      return done(null, false, {message: 'wrong user name or password'});
+    }
+  }
+));
+
+passport.serializeUser(function(user, done) {
+  done(null, user);
+});
+
+passport.deserializeUser(function(user, done) {
+  done(null, user);
+});