Unit tests are sometimes thought of that cousin nobody likes and everybody can't wait for him to leave, although he gets invited regularly because, well, what are you going to do? - He's family.
Whether we write unit tests because we believe in them, or because somebody insists that we do (be it your team leader, some agile guideline, the Pope, etc.), there are ways to make the end result more effective, and dare I say - fun.
Every now and again you might require for some additional resources to be present in order for your unit test to properly execute. This seems as a reasonable requirement, and MSTEST has indeed addressed it with what goes by the name "Deployment".
To configure deployment for your unit tests double click the "Local.testsettings" in your "Solution Items" folder, you should be able to see a "Deployment" option on the left side, allowing you to add files and folders to be copied alongside your unit tests. So far so good.