# File test/test_params.rb, line 1440
    def test_comment
      assert_equal(nil, @entry.comment)
      @entry.comment = 'HELO'
      assert_equal('HELO', @attrs['comment'])
      assert_equal('HELO', @entry.comment)
      @entry.comment = nil      # allowed
      assert_exception(RuntimeError) {
        @entry.comment = 0     # not allowed
      }
    end