@Test
 public void testFindNotActivatedUsersByCreationDateBefore() {
   userService.removeNotActivatedUsers();
   DateTime now = new DateTime();
   List<User> users =
       userRepository.findAllByActivatedIsFalseAndCreatedDateBefore(now.minusDays(3));
   assertThat(users).isEmpty();
 }
 @Test
 public void testRemoveOldPersistentTokens() {
   User admin = userRepository.findOneByLogin("admin");
   int existingCount = persistentTokenRepository.findByUser(admin).size();
   generateUserToken(admin, "1111-1111", new LocalDate());
   LocalDate now = new LocalDate();
   generateUserToken(admin, "2222-2222", now.minusDays(32));
   assertThat(persistentTokenRepository.findByUser(admin)).hasSize(existingCount + 2);
   userService.removeOldPersistentTokens();
   assertThat(persistentTokenRepository.findByUser(admin)).hasSize(existingCount + 1);
 }