What are unit tests? Why put the effort into writing unit tests? You might say, “Heck, I know my code works because I wrote it, sniff”… Besides, what do sustainable unit tests look like so I don’t have to spend all of my time on them? If this sounds familiar, this talk is for you. You will be introduced to the world of testing, with a focus on testing at the unit level, along with demonstrating practical examples for WordPress plugin development.