// this.points must contain int coordinates
 protected void testPointsInsideDiagram() {
   alg.setPoints(points);
   alg.createDiagram();
   Map<Long, MPolygon> diagram = alg.getDiagram();
   for (int i = 0; i < points.size(); i++) {
     Long id = new Long(i);
     Pnt p = points.get(id);
     assertTrue(diagram.get(id).getAWTPolygon().contains((int) p.getX(), (int) p.getY()));
   }
 }