After the install is complete you will see test login: the login prompt. You'll need to know the username and password. The user name is "root" (without the quotes) and the password is the one you choose during the install. If you forgot the password it's probably best to do the install all over again. There are ways to recover the root user's password but it's probably more work than it is worth on a newly installed system.
Once you are logged in you will see [root@test ~]#.