### Question:
PlayerGames implements Iterable<PlayerGame>, Tickable { public PlayerGame add(Player player, String roomName, PlayerSave save) { GameType gameType = player.getGameType(); Single single = buildSingle(player, gameType); Game game = new LockedGame(lock).wrap(single); play(game, roomName, gameType, parseSave(save)); PlayerGame playerGame = new PlayerGame(player, game, roomName); if (onAdd != null) { onAdd.accept(playerGame); } all.add(playerGame); return playerGame; } PlayerGames(); void onAdd(Consumer<PlayerGame> consumer); void onRemove(Consumer<PlayerGame> consumer); void init(ReadWriteLock lock); void removeCurrent(Player player); void remove(Player player); PlayerGame get(String id); PlayerGame get(GamePlayer player); PlayerGame add(Player player, String roomName, PlayerSave save); boolean isEmpty(); @Override Iterator<PlayerGame> iterator(); List<Player> players(); int size(); void clear(); List<PlayerGame> getAll(Predicate<PlayerGame> predicate); static Predicate<PlayerGame> withType(String gameType); static Predicate<PlayerGame> withAll(); static Predicate<PlayerGame> withRoom(String room); Predicate<PlayerGame> withActive(); List<GameType> getGameTypes(); @Override void tick(); void reloadCurrent(PlayerGame playerGame); void reload(Game game, String roomName, JSONObject save); void reloadAll(boolean shuffle); void reloadAll(boolean shuffle, Predicate<PlayerGame> predicate); List<Player> getPlayers(String gameName); void changeLevel(String playerId, int level); void setLevel(String playerId, JSONObject save); void changeRoom(String playerId, String roomName); PlayerGame get(int index); List<PlayerGame> all(); List<PlayerGame> active(); Stream<PlayerGame> stream(); Multimap<String, Room> rooms(); List<String> getRooms(boolean isAll); static final boolean ALL; static final boolean ACTIVE; }### Answer:
@Test public void testAdd() { Player player = createPlayer(); Player otherPlayer = createPlayer(); assertEquals(false, playerGames.isEmpty()); assertEquals(2, playerGames.size()); PlayerGame playerGame = playerGames.get(otherPlayer.getId()); assertEquals(otherPlayer, playerGame.getPlayer()); }