assertMean(0, 0, 0);
    assertMean(-1, -1, -1);
    assertMean(Long.MIN_VALUE, Long.MIN_VALUE, Long.MIN_VALUE);
    assertMean(Long.MAX_VALUE, Long.MAX_VALUE, Long.MAX_VALUE);

    // Exhaustive checks
    for (long x : ALL_LONG_CANDIDATES) {
      for (long y : ALL_LONG_CANDIDATES) {
        assertMean(x, y);
      }
    }
  }

  /** Helper method that asserts the arithmetic mean of x and y is equal to the expectedMean. */

      public long getLongLittleEndian(byte[] array, int offset) {
        return theUnsafe.getLong(array, (long) offset + BYTE_ARRAY_BASE_OFFSET);
      }

      @Override
      public void putLongLittleEndian(byte[] array, int offset, long value) {
        theUnsafe.putLong(array, (long) offset + BYTE_ARRAY_BASE_OFFSET, value);
      }
    },
    UNSAFE_BIG_ENDIAN {
      @Override

   * @param start the starting bytes encoded as a long as big-endian
   * @param lim the limit of bytes to process encoded as a long as big-endian, or -1 to mean the max
   *     limit for numBytes
   */
  @GwtIncompatible // java.nio.charset.Charset
  private static void testBytes(int numBytes, long expectedCount, long start, long lim) {
    byte[] bytes = new byte[numBytes];
    if (lim == -1) {

          + (33333333.0 - LONG_MANY_VALUES_MEAN) * (33333333.0 - LONG_MANY_VALUES_MEAN)
          + (-44444444.0 - LONG_MANY_VALUES_MEAN) * (-44444444.0 - LONG_MANY_VALUES_MEAN)
          + (5555555555.0 - LONG_MANY_VALUES_MEAN) * (5555555555.0 - LONG_MANY_VALUES_MEAN);
  static final double LONG_MANY_VALUES_MAX = 5555555555.0;
  static final double LONG_MANY_VALUES_MIN = -44444444.0;

      return NeverScheduledFuture.create();
    }

    private static class NeverScheduledFuture<V> extends AbstractFuture<V>
        implements ListenableScheduledFuture<V> {

      static <V> NeverScheduledFuture<V> create() {
        return new NeverScheduledFuture<>();
      }

      @Override
      public long getDelay(TimeUnit unit) {
        return Long.MAX_VALUE;

   *
   * <p>Instead of throwing {@link ArithmeticException}, this method silently saturates to either
   * {@link Long#MAX_VALUE} or {@link Long#MIN_VALUE}. This behavior can be useful when decomposing
   * a duration in order to call a legacy API which requires a {@code long, TimeUnit} pair.
   */
  @SuppressWarnings({
    // We use this method only for cases in which we need to decompose to primitives.

   *
   * <p>Instead of throwing {@link ArithmeticException}, this method silently saturates to either
   * {@link Long#MAX_VALUE} or {@link Long#MIN_VALUE}. This behavior can be useful when decomposing
   * a duration in order to call a legacy API which requires a {@code long, TimeUnit} pair.
   */
  @SuppressWarnings({
    // We use this method only for cases in which we need to decompose to primitives.

   * Returns the total number of chars read. Does not close the stream.
   *
   * @since 20.0
   */
  @CanIgnoreReturnValue
  public static long exhaust(Readable readable) throws IOException {
    long total = 0;
    long read;
    CharBuffer buf = createBuffer();
    while ((read = readable.read(buf)) != -1) {
      total += read;
      Java8Compatibility.clear(buf);
    }
    return total;

    assertEquals(Long.MAX_VALUE, DiscreteDomain.longs().offset(0L, Long.MAX_VALUE).longValue());
  }

  public void testLongsOffsetExceptions() {
    assertThrows(IllegalArgumentException.class, () -> DiscreteDomain.longs().offset(0L, -1));
    assertThrows(
        IllegalArgumentException.class, () -> DiscreteDomain.longs().offset(Long.MAX_VALUE, 1));
  }

  public void testBigIntegersOffset() {

  final ScheduledExecutorService executor =
      new ScheduledThreadPoolExecutor(10) {
        @Override
        public ScheduledFuture<?> scheduleWithFixedDelay(
            Runnable command, long initialDelay, long delay, TimeUnit unit) {
          return future = super.scheduleWithFixedDelay(command, initialDelay, delay, unit);
        }
      };

  public void testServiceStartStop() throws Exception {