@Before
  public void setup() throws IOException, InterruptedException {
    PropertyConfigurator.configure(getClass().getResourceAsStream("log4j.properties"));
    ServerConfiguration config = ServerConfiguration.defaults();

    // Use any available port
    config.setPortSocket(0);
    config.setPortWebsocket(0);

    main = new MainServer(config);
    main.getMods().loadExternal(Paths.get("../extra-resources/groovy"));
    server = main.start();

    assertTrue("Server should start correctly.", server.getClients().size() > 0);

    socketPort = config.getPortSocket();
    client1 = createTestClient();
    client1.send(new LoginMessage("Tester1"));

    WelcomeMessage welcome = client1.await(WelcomeMessage.class);
    assertEquals(200, welcome.getStatus());
    System.out.println(server.getClients());
    assertEquals(server.getClients().size() + 1, welcome.getUserId());
    userId = welcome.getUserId();
    client1.await(ChatMessage.class);
    mods = client1.await(AvailableModsMessage.class);
    assertNotEquals("No mods found in " + new File("").getAbsolutePath(), 0, mods.getMods().length);
  }
 @Test(timeout = 5000)
 public void testSameUserName() throws IOException, InterruptedException {
   TestClient client2 = createTestClient();
   client2.send(new LoginMessage(client1.getName()));
   WelcomeMessage welcomeMessage = client2.await(WelcomeMessage.class);
   assertFalse(welcomeMessage.isOK());
 }
  @Test(timeout = 10000)
  public void testOnlyOneInvite() throws IOException, InterruptedException {
    TestClient client2 = createTestClient();

    client2.send(new LoginMessage("client2"));
    WelcomeMessage welcomeMessage = client2.await(WelcomeMessage.class);
    assertTrue(welcomeMessage.isOK());
    int client2id = welcomeMessage.getUserId();

    client1.await(UserStatusMessage.class);
    client1.await(ChatMessage.class);

    client1.send(new StartGameRequest(client2id, getTestMod()));
    client1.send(new StartGameRequest(client2id, getTestMod()));
    client1.await(ServerErrorMessage.class);
  }
  @Test
  public void shouldReturnWelcomeMessage() {
    WelcomeMessage welcomeMessage = new WelcomeMessage("Welcome to Biblioteca");

    assertEquals("Welcome to Biblioteca\n", welcomeMessage.toString());
  }