Yes, you absolutely want to run the entire game to test a function because if it does not work in the context of the game then it's wrong, regardless of what th

Yes, you absolutely want to run the entire game to test a function because if it does not work in the context of the game then it's wrong, regardless of what the spec or the tests say. Do you really want to have to update a test every time you want the jump button to have more or less force, when tuning your platforming mechanics?