# File lib/shoulda/context/assertions.rb, line 68
      def assert_rejects(matcher, target, options = {})
        if matcher.respond_to?(:in_context)
          matcher.in_context(self)
        end

        not_match = matcher.respond_to?(:does_not_match?) ? matcher.does_not_match?(target) : !matcher.matches?(target)

        if not_match
          safe_assert_block { true }
          if options[:message]
            message = matcher.respond_to?(:failure_message_for_should) ? matcher.failure_message_for_should : matcher.failure_message
            assert_match options[:message], message
          end
        else
          message = matcher.respond_to?(:failure_message_for_should_not) ? matcher.failure_message_for_should_not : matcher.negative_failure_message
          safe_assert_block(message) { false }
        end
      end