There isn’t much information on how to use TestService, it hasn’t been mentioned as much.
I’m aware of testez however I am figuring out a way to combine both of them together.
As far as I know it doesn’t seem like BaseScripts inside of TestService have different context while running, meaning that they are both on the Client and Server at the same time.
Which presents a problem because we can’t test Client side logic properly with this behavior.
It is a shame that TestService isn’t being used because of it being unknown and lack of documentation.