Approach to testing a JSR 168 portlet

For a simple project when I don't need an MVC framework like Spring - how should I test my JSR 168 portlet? The business layer is easy enough with jUnit but how do I do functional/integration testing?

I found portletUnit but th开发者_C百科at seems like a dead project?

You can always go with something like Selenium or HTMLUnit to test the user interface. I can't say anything about PortletUnit since I never tried it.