Mock window

window.js

var createWindow = function() {
      var events = kafkaFactory();
      var register = function(wantedObj, wantedType, callback) {
        events.register(function(obj, type, event) {
          if (wantedObj === obj && wantedType === type) {
            callback(event);
          }
        });
      };
      var evented = function() {
        var obj = {};
        obj.addEventListener = function(type, callback) {
          register(obj, type, callback);
        };
        obj.fireEvent = function(event) {
          events.invoke(obj, event.type, event);
        };
        return obj;
      };
      var win = evented();
      win.document = evented();
      win.document.body = evented();
      win.timeOuts = {};
      win.timeOutCallbacks = {};
      var id = 0;
      win.setTimeout = function(callback, time) {
        win.timeOuts[time] = win.timeOuts[time] || [];
        var i = id++;
        win.timeOutCallbacks[i] = callback
        win.timeOuts[time].push(i);
      };
      win.time = 0;
      win.tick = function(t) {
        each(win.timeOuts, function(v, k) {
          if (k > win.time && k <= t) {
            var callback = win.timeOutCallbacks[v];
            if (callback) {
              callback();
            }
          }
        });
      };
      win.clearTimeout = function(id) {
        var cbs = win.timeOutCallbacks;
        delete cbs[id];
      };
      return win;
    };