Jasmine test failing

gistfile1.js

  describe("display alert for unsaved publisher content", function(){
    it('should display confirm dialog if text exists in status message', function(){
        $('#status_message_fake_text').val('Hello world');
        spyOn(window, 'confirm');
        $(window).trigger('confirm')
        expect(window.confirm).toHaveBeenCalled();
      });
  });