public void GetNodeDataTest()
        {
            var target = new DemographicsSet_Accessor();

            target.AddLayer("layer1.compiled.json");
            const int nodeId = 1970;
            NodeData  actual = target.GetNodeData(nodeId);

            Assert.AreEqual("Milwaukee, WI", actual.GetString("NodeAttributes.Name"));
            Assert.AreEqual(43.038812, actual.GetDouble("NodeAttributes.Latitude"));
            Assert.AreEqual(-87.906824, actual.GetDouble("NodeAttributes.Longitude"));
            Assert.AreEqual(596974, actual.GetInteger("NodeAttributes.InitialPopulation"));
        }