This week's book giveaway is in the Mac OS forum. We're giving away four copies of a choice of "Take Control of Upgrading to Yosemite" or "Take Control of Automating Your Mac" and have Joe Kissell on-line! See this thread for details.
I am just learning this framework also, but actionPerform() is simply a hook into the StrutsTestCase/Cactus framework that calls you actions execution method. you need to use cactus in conjunction with strutstestcase ( I do believe) Like a say I am just learning so hope I helped.