Is there a good way to test against an error?

[roni-estein]

it feels like an odd question, yet I don't often reach for __callStatic($name,$arguments), however I do have a use for it which adds a subtle change to the code using that class. Once I do, when putting it under test I want to assert all the expected functions are covered, but I've also deliberately passed on the error case for example if you call Example::foo($bar) and there is no foo($bar) it should error as per normal php. Should that be tested? If I throw an exception, it becomes a different error than the standard error: Undefined Method error. Any thoughts or wise words are appreciated.