# File lib/merb-core/test/helpers/mock_request_helper.rb, line 79
      def fake_request(env = {}, opt = {})
        if opt[:post_body]
          req = opt[:post_body]
          env[:content_type] ||= "application/x-www-form-urlencoded"
        else
          req = opt[:req]
        end
        FakeRequest.new(env, StringIO.new(req || ''))
      end