@Test
 public void shouldReturnThreeHighestScorerUsers() {
   User user1 = new User("user1", 50);
   User user2 = new User("user2", 450);
   User user3 = new User("user3", 350);
   User user4 = new User("user4", 100);
   User user5 = new User("user5", 250);
   databaseHelper.addUser(user1);
   databaseHelper.addUser(user2);
   databaseHelper.addUser(user3);
   databaseHelper.addUser(user4);
   databaseHelper.addUser(user5);
   List<User> threeHighestScorers = gameRepository.getThreeHighestScorers();
   assertEquals(user2.getHighestScore(), threeHighestScorers.get(0).getHighestScore());
   assertEquals(user3.getHighestScore(), threeHighestScorers.get(1).getHighestScore());
   assertEquals(user5.getHighestScore(), threeHighestScorers.get(2).getHighestScore());
 }