### Question:
PlayerGames implements Iterable<PlayerGame>, Tickable { @Override public Iterator<PlayerGame> iterator() { return all.iterator(); } 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 testIterator() { Player player = createPlayer(); Player otherPlayer = createPlayer(); Iterator<PlayerGame> iterator = playerGames.iterator(); assertEquals(true,iterator.hasNext()); assertEquals(player, iterator.next().getPlayer()); assertEquals(true,iterator.hasNext()); assertEquals(otherPlayer, iterator.next().getPlayer()); assertEquals(false,iterator.hasNext()); }