Welcome to the real world - there are no "customer"-provided test files for this program!! Instead you will have to develop tests to verify that your program is working correctly.
Remember since you are implementing a real subset of FTP you can test the FTP portions of this program using the standard FTP tools available on most systems. For example, you should be able to start your server and download files form it using a standard FTP client. You should al;so be able to use a standard FTP client to download files from your server.
At some point in the next few weeks, I will start up my implementation of the P2pFTP server. You should make sure before you submit your code that you can access my workspace using your client.