public void sequentialStringTest()
        {
            d = new FieldNode(1, "1", 1, 1);
            d.data.Add("1");
            d.data.Add("2");
            d.data.Add("3");

            Assert.AreEqual("1", d.getSequentialString(0));
            Assert.AreEqual("1", d.getSequentialString(3));
            Assert.AreNotEqual("1", d.getSequentialString(4));
        }