# File test/test_DocumentTable.rb, line 542
    def test_down_disabled
      @DocumentTable.entry = { :pos => 1 }
      prev_length_call = @length_call
      assert_equal(true, @DocumentTable.down_disabled?)
      assert_equal(prev_length_call + 1, @length_call)
      @DocumentTable.entry = { :pos => 0 }
      prev_length_call = @length_call
      assert_equal(false, @DocumentTable.down_disabled?)
      assert_equal(prev_length_call + 1, @length_call)
    end