FakePlayer

public class FakePlayer {

    private MinecraftServer server;
    private WorldServer world;
    private UUID uuid;
    private GameProfile profile;
    private PlayerInteractManager manager;
    private EnumGamemode mode;
    private int ping;

    private EntityPlayer player;

    public FakePlayer(String name) {
        this.server = MinecraftServer.getServer();
        this.world = server.getWorldServer(0);
        this.uuid = UUID.randomUUID();
        this.profile = new GameProfile(uuid, name);
        this.manager = new PlayerInteractManager(world);
        this.mode = EnumGamemode.SURVIVAL;
        this.ping = 0;
    }

    public FakePlayer withName(String name) {
        this.profile = new GameProfile(this.profile.getId(), name);
        return this;
    }
    public FakePlayer withUniqueId(UUID id) {
        this.uuid = id;
        this.profile = new GameProfile(uuid, this.profile.getName());
        return this;
    }
    public FakePlayer withGameMode(EnumGamemode mode) {
        this.mode = mode;
        return this;
    }
    public FakePlayer withPing(int ping) {
        this.ping = ping;
        return this;
    }

    public FakePlayer create() {
        this.player = new EntityPlayer(this.server, this.world, this.profile, this.manager);
        this.player.a(this.mode);
        this.player.ping = this.ping;

        return this.player;
    }
}