/** test that anchor is not null when reading shapes from existing drawings */
public void testReadAnchors() {
XSSFWorkbook wb = new XSSFWorkbook();
XSSFSheet sheet = wb.createSheet();
XSSFDrawing drawing = sheet.createDrawingPatriarch();
XSSFClientAnchor anchor1 = new XSSFClientAnchor(0, 0, 0, 0, 2, 2, 3, 4);
XSSFShape shape1 = drawing.createTextbox(anchor1);
assertNotNull(shape1);
XSSFClientAnchor anchor2 = new XSSFClientAnchor(0, 0, 0, 0, 2, 2, 3, 5);
XSSFShape shape2 = drawing.createTextbox(anchor2);
assertNotNull(shape2);
int pictureIndex = wb.addPicture(new byte[] {}, XSSFWorkbook.PICTURE_TYPE_PNG);
XSSFClientAnchor anchor3 = new XSSFClientAnchor(0, 0, 0, 0, 2, 2, 3, 6);
XSSFShape shape3 = drawing.createPicture(anchor3, pictureIndex);
assertNotNull(shape3);
wb = XSSFTestDataSamples.writeOutAndReadBack(wb);
sheet = wb.getSheetAt(0);
drawing = sheet.createDrawingPatriarch();
List<XSSFShape> shapes = drawing.getShapes();
assertEquals(shapes.get(0).getAnchor(), anchor1);
assertEquals(shapes.get(1).getAnchor(), anchor2);
assertEquals(shapes.get(2).getAnchor(), anchor3);
assertNotNull(XSSFTestDataSamples.writeOutAndReadBack(wb));
}
