Starting where I started, not knowing anythning about PHP unit testing except for the fact that I should be doing it and hearing a lot of smart people talking about it I will explain what it is and how to set it up.
Unit Testing your WordPress plugin with PHPUnit – Install
WordPress Database Time Test: Arrays vs Booleans
I have been wondering lately if it would be faster to save and read multiple options, such as module toggles (if the module is active or not) as serialized data in the database, or if I should spit each module toggle out into its own option entry in the database. In order to figure this out were going to do some time tests.