Test Driven Development

I think the thing I usually see, at least beginner developers doing. is that they're literally working on the code first and writing tests later. And for something like this, we can easily just set up a test case. That should save you at least the setup time, the running time of doing everything manually. But then again, those kinds of tests are really easy to do. You may even call that a unit test because it's maybe 10 lines of code that you just keep running over and over again.