Scoping individual assertions

[Ryland Herrick]

Right now, there's no actual scope/isolation between tests, so it's up to the user to do any necessary housekeeping before/after an assertion is made.

The simplest solution would be to add an end_it method that does this (undefines stubbed methods, restores backup files, etc.), but if we could manage to do it another way I'm open to suggestions.

[Odin]

My preference would be to require an end_it for consistency with end_describe and have that do the work.

Adding end_it would break backwards compatibility but since we're in alpha I would make the change now :-)

[Ryland Herrick]

@twe4ked I'm gonna close this as a duplicate of #16. #43 removes the need for separate end_it and end_describe functions, but I think there's a lot more work needed to accomplish the housekeeping part.

[Odin]

Sounds good @rylnd, I was wondering if #43 would help this issue at all.