Premisas ciboodle dev

Logic place within a  form process cant be reused. Not good to put logic in a place that you can't reuse it.
You test mainly logic.
when you test the through the ui you are testing the most end to end test, the most black possible black box.. However you'll need to stub or mock some object in order to get the behaviour you want. Which means not testing directly the object that implements it youll have to configure quite a lot in your test, which at this point you don't have a black box test anymore because you are configuring the inside of the ui. Although you could use factories to encapsulate that knowledge
Form  processes can be tested as any other object. However if make sense
--> which means we test them as a black box, without looking at who he delegates to.
Testing at the form process level is more end to end test. It covers more code