Some spells like homing, bounce, etc require a target to practice with. It'd be great if -test will also summon one or more dummy warlocks. Thanks for your attention.
There is a -bot <player number> command to spawn a bot in the test mode, e.g. -bot 1. You can spawn the other characters with -her 1, -inq 1 and -occ 1.
-bot <player number>
If only I knew that earlier