A example syntax for handling jquery functions in screw-unit

signals_in_screw_unit.js

signal(me).when(adapter, 'loaded', function() {
  expect(adapter.trains.length).to(equal, 5);
});

spec_helper.js

Screw.Utilities.signal = function(me) {
  return { when: function(target, signal, fn) {
    (function($) {
      $(target).bind(signal, function() {
        try {
          fn(me);
        } catch (e) {
          me.trigger('failed', [e]);
          return;
        }
        me.trigger('passed');
      });      
    })(jQuery);
  }};
};