public void TestAddChartsToNewWorkbook()
{
XSSFWorkbook wb = new XSSFWorkbook();
XSSFSheet s1 = (XSSFSheet)wb.CreateSheet();
XSSFDrawing d1 = (XSSFDrawing)s1.CreateDrawingPatriarch();
XSSFClientAnchor a1 = new XSSFClientAnchor(0, 0, 0, 0, 1, 1, 10, 30);
XSSFChart c1 = (XSSFChart)d1.CreateChart(a1);
Assert.AreEqual(1, d1.GetCharts().Count);
Assert.IsNotNull(c1.GetGraphicFrame());
Assert.IsNotNull(c1.GetOrCreateLegend());
XSSFClientAnchor a2 = new XSSFClientAnchor(0, 0, 0, 0, 1, 11, 10, 60);
XSSFChart c2 = (XSSFChart)d1.CreateChart(a2);
Assert.AreEqual(2, d1.GetCharts().Count);
}