@Test
  public void testGetPlanofIns() throws RemoteException {
    ArrayList<LessonAbstractPO> pList = new ArrayList<LessonAbstractPO>();

    ArrayList<PO> list = lesAbData.find(1, 25);
    for (PO po : list) {
      pList.add((LessonAbstractPO) po);
    }
    assertTrue(pList != null);
  }
 @Test
 public void testGetPlan() throws RemoteException {
   assertTrue(lesAbData.find(0) == null);
 }