ExecutorService service = newDirectExecutorService();
    Thread waiter =
        new Thread() {
          @Override
          public void run() {
            try {
              service.awaitTermination(1, DAYS);
            } catch (InterruptedException e) {
              return;
            }
          }
        };
    waiter.start();
    awaitTimedWaiting(waiter);

    }

    @Test
    public void test_isUrlCrawlable_nullUrl() {
        DataStoreParams paramMap = new DataStoreParams();
        paramMap.put("url_exclude_pattern", ".*");

        try {
            indexUpdateCallback.isUrlCrawlable(paramMap, null);
            fail("Expected NullPointerException for null URL");
        } catch (NullPointerException e) {

        Runtime.getRuntime().addShutdownHook(new Thread(this::shutdown));
    }

    private void startAsyncProcessor() {
        logExecutor.submit(() -> {
            while (!shutdown) {
                try {
                    AuditEntry entry = logQueue.take();
                    if (entry != null) {
                        processLogEntry(entry);
                        returnAuditEntry(entry);
                    }

        if (peer != null) {
            try {
                return peer.loadClass(name);
            } catch (final Exception e) {
                // drop through...
            } catch (final LinkageError e) {
                // drop through...
            }
        }

        try {
            // last chance - classic model
            return Class.forName(name);

    public void test_executeTx() throws Exception {
        final CrawlerWebServer server = new CrawlerWebServer(0);
        server.start();

        final String url = "http://localhost:" + server.getPort() + "/";
        try {
            final int maxCount = 50;
            final int numOfThread = 10;

            final File file = File.createTempFile("crawler-", "");
            file.delete();
            file.mkdirs();

  }

  private static MessageDigest getMessageDigest(String algorithmName) {
    try {
      return MessageDigest.getInstance(algorithmName);
    } catch (NoSuchAlgorithmException e) {
      throw new AssertionError(e);
    }
  }

  @Override
  public Hasher newHasher() {
    if (supportsClone) {
      try {
        return new MessageDigestHasher((MessageDigest) prototype.clone(), bytes);

   * you may wish to override {@link #offer} to forward to this implementation.
   *
   * @since 7.0
   */
  protected boolean standardOffer(@ParametricNullness E e) {
    try {
      return add(e);
    } catch (IllegalStateException caught) {
      return false;
    }
  }

  /**
   * A sensible definition of {@link #peek} in terms of {@link #element}. If you override {@link

   */
  static long toNanosSaturated(Duration duration) {
    // Using a try/catch seems lazy, but the catch block will rarely get invoked (except for
    // durations longer than approximately +/- 292 years).
    try {
      return duration.toNanos();
    } catch (ArithmeticException tooBig) {
      return duration.isNegative() ? Long.MIN_VALUE : Long.MAX_VALUE;
    }

            throw new SmbException(unc + " UNC must end with '\\'");
        }

        final SmbTreeHandleImpl th = getTreeHandle();
        this.response = new Trans2FindFirst2Response(th.getConfig());

        try {
            th.send(new Trans2FindFirst2(th.getConfig(), unc, this.getWildcard(), this.getSearchAttributes(), th.getConfig().getListCount(),
                    th.getConfig().getListSize() - FIND_OVERHEAD), this.response);

            throw new CIFSException("Singleton context is already initialized");
        }
        final Properties p = new Properties();
        try {
            final String filename = System.getProperty("jcifs.properties");
            if (filename != null && filename.length() > 1) {

                try (FileInputStream in = new FileInputStream(filename)) {
                    p.load(in);
                }
            }