This is another in my Getting Started series, where he provides an introduction to a topic that everyone knows about but not everyone is actually doing (or doing enough of). In part 1 of this 3 part series, I showed how to get started with unit testing in Visual Studio. In this episode, I show how to write unit tests that test the UI interactions in a XAML application. He then shows how to create data-driven tests and how to perform a code coverage analysis to determine what parts of your code are being covered by unit tests.