thoughtbot/shoulda-matchers — pull request #230 by sikachu (2013-02-07 16:26:48+00:00)
Title: Remove RSpec `#should` syntax to support Test::Unit

There was no need for us to call `#should` in those matchers, as we only
need to return true/false in `#matches?` method. By removing those
`should`, those two matchers are now working fine with Test::Unit
and minitest.