*       create a {@link SettableFuture} instead. (If your needs are more complex, you may prefer
 *       {@link AbstractFuture}.)
 * </ul>
 *
 * <p><b>Test doubles</b>: If you need a {@code ListenableFuture} for your test, try a {@link
 * SettableFuture} or one of the methods in the {@link Futures#immediateFuture Futures.immediate*}
 * family. <b>Avoid</b> creating a mock or stub {@code Future}. Mock and stub implementations are

            boolean isSpace = false;
            int alphanumSize = 0;
            int symbolSize = 0;
            int c;
            final Set<String> termCache = new HashSet<>(1000);
            try {
                while ((c = reader.read()) != -1) {
                    if (Character.isISOControl(c) || isSpaceChar(c)) {
                        if (duplicateTermRemoved) {

        }
        esCb.request().build(builder);
        SearchResponse response = esCb.build(builder).execute().actionGet(scrollSearchTimeout);
        String scrollId = response.getScrollId();
        try {
            while (scrollId != null) {
                final SearchHits searchHits = getSearchHits(response);
                final SearchHit[] hits = searchHits.getHits();
                if (hits.length == 0) {

      long timeout,
      TimeUnit unit) {
    Preconditions.checkNotNull(buffer);
    long deadline = System.nanoTime() + unit.toNanos(timeout);
    int added = 0;
    boolean interrupted = false;
    try {
      while (added < numElements) {
        // we could rely solely on #poll, but #drainTo might be more efficient when there are
        // multiple elements already available (e.g. LinkedBlockingQueue#drainTo locks only once)

    }

    public void test_byteCountToDisplaySize_edgeCases() {
        // Test negative values - should throw NullPointerException in private method via BigInteger.valueOf
        try {
            MemoryUtil.byteCountToDisplaySize(-1L);
            // If no exception, verify it handles negative as expected
        } catch (Exception e) {
            // Expected for negative values
        }

      client
        .newBuilder()
        .protocols(listOf(Protocol.H2_PRIOR_KNOWLEDGE))
        .socketFactory(socketFactory)
        .addNetworkInterceptor(
          Interceptor { chain ->
            try {
              chain.proceed(chain.request())
            } finally {
              firstConnectLatch.countDown()
            }
          },
        ).build()

    // Set up a same-connection retry.

        dataMap.put("hostname", systemHelper.getHostname());

        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        final Postbox postbox = ComponentUtil.getComponent(Postbox.class);
        try {
            TestmailPostcard.droppedInto(postbox, postcard -> {
                postcard.setFrom(fessConfig.getMailFromAddress(), fessConfig.getMailFromName());
                postcard.addReplyTo(fessConfig.getMailReturnPath());

      int valueBucket = Hashing.smear(valueHash) & mask;

      ImmutableMapEntry<K, V> nextInKeyBucket = keyTable[keyBucket];
      ImmutableMapEntry<K, V> nextInValueBucket = valueTable[valueBucket];
      try {
        checkNoConflictInKeyBucket(key, value, nextInKeyBucket, /* throwIfDuplicateKeys= */ true);
        checkNoConflictInValueBucket(value, entry, nextInValueBucket);
      } catch (BucketOverflowException e) {

        when(pipe.ensureTreeConnected()).thenReturn(tree);
        when(tree.acquire()).thenReturn(tree); // method returns itself per implementation

        // Act: call twice
        try (SmbTreeHandleImpl t1 = target.ensureTreeConnected(); SmbTreeHandleImpl t2 = target.ensureTreeConnected()) {
            assertSame(tree, t1);
            assertSame(tree, t2);
        }

  }

  public void testSpanSingleRange() {
    for (Range<Integer> range : RANGES) {
      RangeMap<Integer, Integer> rangeMap = TreeRangeMap.create();
      rangeMap.put(range, 1);

      try {
        assertEquals(range, rangeMap.span());
        assertFalse(range.isEmpty());
      } catch (NoSuchElementException e) {
        assertTrue(range.isEmpty());
      }
    }
  }