public void testToString() {
    stopwatch.start();
    assertEquals("0.000 ns", stopwatch.toString());
    ticker.advance(1);
    assertEquals("1.000 ns", stopwatch.toString());
    ticker.advance(998);
    assertEquals("999.0 ns", stopwatch.toString());
    ticker.advance(1);
    assertEquals("1.000 \u03bcs", stopwatch.toString());
    ticker.advance(1);

        indexUpdater.start();

        // Give the thread time to process exceptions
        Thread.sleep(2000);

        // Clean up the thread
        indexUpdater.setFinishCrawling(true);
        indexUpdater.interrupt();
        indexUpdater.join(2000);

        // Test passes if no exception is thrown and thread terminates properly

    }

    public void test_specialCharactersInMessage() {
        // Test with special characters in message
        String messageWithSpecialChars = "Error: offset > 1000 && offset < 2000 | \"quotes\" 'single' \n\t tab";
        ResultOffsetExceededException exception = new ResultOffsetExceededException(messageWithSpecialChars);

        assertEquals(messageWithSpecialChars, exception.getMessage());

        for (int i = 0; i < 1000; i++) {
            longMessage.append("Error ").append(i).append(" ");
        }
        String message = longMessage.toString();

        DataStoreException exception = new DataStoreException(message);
        assertEquals(message, exception.getMessage());
        assertTrue(exception.getMessage().length() > 5000);
    }

    public void test_getLocalizedMessage() {

    assertThat(limiter.acquire()).isWithin(EPSILON).of(0.2);
  }

  public void testOneSecondBurst() {
    RateLimiter limiter = RateLimiter.create(5.0, stopwatch);
    stopwatch.sleepMillis(1000); // max capacity reached
    stopwatch.sleepMillis(1000); // this makes no difference
    limiter.acquire(1); // R0.00, since it's the first request

    limiter.acquire(1); // R0.00, from capacity
    limiter.acquire(3); // R0.00, from capacity

    assertThat(limiter.acquire()).isWithin(EPSILON).of(0.2);
  }

  public void testOneSecondBurst() {
    RateLimiter limiter = RateLimiter.create(5.0, stopwatch);
    stopwatch.sleepMillis(1000); // max capacity reached
    stopwatch.sleepMillis(1000); // this makes no difference
    limiter.acquire(1); // R0.00, since it's the first request

    limiter.acquire(1); // R0.00, from capacity
    limiter.acquire(3); // R0.00, from capacity

        Map<String, String> infoMap = new HashMap<>();
        infoMap.put(Constants.CRAWLER_STATUS, Constants.TRUE);
        infoMap.put("CrawlerStartTime", "2024-01-01T10:00:00");
        infoMap.put("CrawlerEndTime", "2024-01-01T11:00:00");

        try {
            crawler.sendMail(infoMap);
        } catch (Exception e) {
            fail("Should not throw exception: " + e.getMessage());
        }
    }

    assertTrue("Heap is not intact initially", mmHeap.isIntact());
    Iterator<Integer> it = mmHeap.iterator();
    assertEquals((Integer) 1, it.next());
    assertEquals((Integer) 20, it.next());
    assertEquals((Integer) 1000, it.next());
    assertEquals((Integer) 2, it.next());
    it.remove();
    // After this remove, 400 has moved up and 20 down past cursor
    assertTrue("Heap is not intact after remove", mmHeap.isIntact());

   */
  @GwtIncompatible // QueuingRemovalListener

  public void testRemovalNotification_get_basher() throws InterruptedException {
    int nTasks = 1000;
    int nThreads = 100;
    int getsPerTask = 1000;
    int nUniqueKeys = 10000;
    Random random = new Random(); // Randoms.insecureRandom();

    QueuingRemovalListener<String, String> removalListener = queuingRemovalListener();

   */
  @GwtIncompatible // QueuingRemovalListener

  public void testRemovalNotification_get_basher() throws InterruptedException {
    int nTasks = 1000;
    int nThreads = 100;
    int getsPerTask = 1000;
    int nUniqueKeys = 10000;
    Random random = new Random(); // Randoms.insecureRandom();

    QueuingRemovalListener<String, String> removalListener = queuingRemovalListener();