@Test
 public void testMoveAlternative() {
   handler.moveAlternative(a2, 0);
   assertEquals(a2, smaaModel.getAlternatives().get(0));
   assertEquals(a1, smaaModel.getAlternatives().get(1));
 }
 @Test
 public void testMoveCategory() {
   handler.moveCategory(cat2, 0);
   assertEquals(cat2, smaaModel.getCategories().get(0));
   assertEquals(cat1, smaaModel.getCategories().get(1));
 }
 @Test
 public void testMoveCriterion() {
   handler.moveCriterion(crit2, 0);
   assertEquals(crit2, smaaModel.getCriteria().get(0));
   assertEquals(crit1, smaaModel.getCriteria().get(1));
 }