Looks like it does.

(Optional) If you'd like GPT-Migrate to validate the unit tests it creates against your app before it tests the migrated app with them, please have your existing app exposed and use the --sourceport flag.

yep; it's generating unit tests and making sure that things are at least statically correct in terms of syntax. early days, but the ability to have loosely-defined acceptance criteria would go a long way here (like you would have for a well-groomed dev task issue).