# File test/test_params.rb, line 569
    def test_invalid_messenger_queue_length
      @server_params.load(self)
      assert_equal(1, @params_call)
      assert_equal(4, @server_params.messenger_queue_length)
      assert_exception(RuntimeError) {
        @server_params.messenger_queue_length = 0
      }
      assert_exception(RuntimeError) {
        @server_params.messenger_queue_length = -1
      }
      assert_equal(4, @server_params.messenger_queue_length)
    end