@Test
  public void shoudReturnAPlayerById() {
    final List<Player> players = playerDao.getAll();

    assertNotNull(players);
    assertFalse(players.isEmpty());

    final Player player = players.get(0);
    final Player playerById = playerDao.getById(player.getPlayerId(), player.getTeamId());

    assertNotNull(playerById);
    assertEquals(player.getPlayerId(), playerById.getPlayerId());
    assertEquals(player.getAge(), playerById.getAge());
    assertEquals(player.getGoals(), playerById.getGoals());
    assertEquals(player.getCountry(), playerById.getCountry());
    assertEquals(player.getName(), playerById.getName());
    assertEquals(player.getTeamId(), playerById.getTeamId());
  }
  @Test
  public void shouldPersistAPlayer() {
    final Player player = new Player();
    player.setAge(22);
    player.setCountry("Italia");
    player.setGoals(3);
    player.setName("Nuevo jugador");
    player.setTeamId(5000);

    int newPlayerId = playerDao.persist(player);

    final Player playerFromDB = playerDao.getById(newPlayerId, player.getTeamId());
    assertNotNull(playerFromDB);
    assertEquals(player.getAge(), playerFromDB.getAge());
    assertEquals(player.getCountry(), playerFromDB.getCountry());
    assertEquals(player.getGoals(), playerFromDB.getGoals());
    assertEquals(player.getName(), playerFromDB.getName());
    assertEquals(player.getTeamId(), playerFromDB.getTeamId());

    deletePlayerAndValidateDeletion(playerFromDB);
  }
 @Test
 public void shouldReturnNullIfTeamIdDoesntExists() {
   int existingPlayerId = 7000;
   int unexistingTeam = 999;
   assertNull(playerDao.getById(existingPlayerId, unexistingTeam));
 }
 @Test
 public void shouldReturnNullIfPlayerIdDoesntExists() {
   int unexistingPlayerId = 222;
   int existingTeam = 5000;
   assertNull(playerDao.getById(unexistingPlayerId, existingTeam));
 }
 private void deletePlayerAndValidateDeletion(Player player) {
   playerDao.delete(player.getPlayerId());
   assertNull(playerDao.getById(player.getPlayerId(), player.getTeamId()));
   assertEquals(3, playerDao.getAll().size());
 }