Unit Testing your IDEA IntelliJ Plugins

The only information I have been able to find on Unit Testing IntelliJ plugins is at

http://kirblog.idetalk.com/2005/09/writing-unit-tests-for-intellij-idea.html


Is there any other information out there?   Since we're battling a lack of documentation, it would be nice to be able to Spike the technology with some tests - that would help shorten the learning curve.

Let me know if there is anything else out there.