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.
a test suite is basically a way to group one or more tests into suites. Suites can be combined to suites of suites to form arbitrary hierarchies of tests. This makes it for example easy to run only specific subsets of tests by running a suite containing only the interesting test. Or you can only run the suite(s) with tests which is needed for the application part you are currently working etc.