XYDataList xyList = new XYDataList();
xyList.setLabel("Set1");
xyList.addDataPoint(new XYDataPoint(1, 1));
xyList.addDataPoint(new XYDataPoint(2, 2));
xyList.addDataPoint(new XYDataPoint(3, 3));
xyList.addDataPoint(new XYDataPoint(5, 5));
xyCollection.addDataList(xyList);
StringBuilder expected = new StringBuilder();
expected.append("{\"chart\": [ {\"label\": \"Set1\", \"data\": [[1,1], [2,2], [3,3], [5,5]]}],\"instrumentationNode\":\"chartId\"}");
String jsonString = BuildJsonObjectsUtil.generateChartData("chartId", "something", xyCollection, 0l);