Questions

1. What are the benefits of using a storage interface? If you were to use a different storage option, how easy would it be to swap out for the current flat file storage implementation?
2. What’s the difference between an argument and a flag? In the following real-world example, what qualifies as an argument or a flag?

   ./audiofile-cli upload -filename music.mp3

3. Suppose you’d like to create an additional test for when a user runs the get command without passing in any arguments or flags:

   ./audiofile-cli get

What would an additional entry to the tests array look like?