thoughtbot/shoulda-matchers — pull request #287 by cwoodcox (2013-04-26 20:37:58+00:00)
Title: Basic rescue_from matcher and spec

This matcher tests that the controller has been set up to rescue from a
specific exception with the ActiveSupport::Rescuable#rescue_from method. It
supports checking for a specific method as well.

I'm planning to add a few other things to this, but I figured I would
submit the PR now to gauge interest.