Unit tests need to be created that tests obfuscating with all possible Mutator permutations that are 2 Mutators long. So basically given the dozen or so current Mutators, make sure Mutators don't just work on their separately, but together as well. I've run into a few random cases where using Mutators in specific combinations produces faulty payloads, and want a test that can do this for me.

Us

Once the shop_name variable is collected from the user, check all saves (get_save function) walk through the array and check if the shop_name is already used.

If it is, ask users if they want to overwrite the past save. If not, ask for a new name.