Raise when it, describe, context are called before/after tests run
Raise when it, describe, context are called before/after tests run

These case statements in this switch existed but were never exercised.
At a minimum, we should have some exceptions raised here since we
never, ever, ever expect users to hit these cases.

Open to suggestions about how we might verify this behavior
(without adding a separate suite).

pivotal/cedar,jeffh/cedar,tjarratt/cedar,jeffh/cedar,pivotal/cedar,jeffh/cedar,tjarratt/cedar,tjarratt/cedar,pivotal/cedar,jeffh/cedar,pivotal/cedar,tjarratt/cedar,jeffh/cedar,tjarratt/cedar,pivotal/cedar