refute_match

# File lib/minitest/unit.rb, line 564
    def refute_match exp, act, msg = nil
      msg = message(msg) { "Expected #{mu_pp(exp)} to not match #{mu_pp(act)}" }
      assert_respond_to act, :"=~"
      exp = (/#{Regexp.escape exp}/) if String === exp and String === act
      refute exp =~ act, msg
    end