thoughtbot/shoulda-matchers — pull request #80 by sigi (2012-03-19 21:06:26+00:00)
Title: Enhance AllowValueMatcher to take multiple arguments

With the deprecation of "should_allow_values_for", specifying multiple good (or bad) values has become quite noisy (array literal + iterator or roll-your-own macro).

Since it is completely downward compatible, I've enhanced the matcher with the ability to take multiple value arguments.