@Test
 public void testCheckValidityNullInList() {
   exception.expect(IllegalArgumentException.class);
   testConstructor(); // Setup from constructor test
   List<Option> opts = new ArrayList<>();
   opts.add(null);
   man.checkValidity(mockModel, opts);
 }
 @Test
 public void testCheckValidityNullList() {
   exception.expect(IllegalArgumentException.class);
   testConstructor(); // Setup from constructor test
   man.checkValidity(mockModel, null);
 }
 @Test
 public void testCheckValidity() {
   testConstructor(); // Setup from constructor test
   assertTrue(man.checkValidity(mockModel, mockListPass));
   assertFalse(man.checkValidity(mockModel, mockListFail));
 }