Clicking the button should cause an error. About 5 seconds after you click on the button, you should get a message about not being able to load a cross-domain package.
IMPORTANT: Change the domain name in the source of this file to be the domain name that you want to test. You can change the paths too. In this file, /dojo/noxd refers to a dojo installation that has not run the xdgen build command to build cross-domain compatible packages.