long estimatedSize = 0L;
    ImmutableList.Builder<Spliterator.OfLong> splitrsBuilder =
        new ImmutableList.Builder<>(streams.length);
    for (LongStream stream : streams) {
      isParallel |= stream.isParallel();
      Spliterator.OfLong splitr = stream.spliterator();
      splitrsBuilder.add(splitr);
      characteristics &= splitr.characteristics();

                    Spliterator.SIZED | Spliterator.DISTINCT | Spliterator.NONNULL,
                    4))
        .expect(1, 1, 2, 3);
  }

  public void testFlatMapToLong_nullStream() {
    SpliteratorTester.ofLong(
            () ->
                CollectSpliterators.flatMapToLong(
                    Arrays.spliterator(new Long[] {1L, 0L, 1L, 2L, 3L}),
                    (Long i) -> i == 0L ? null : LongStream.of(i).spliterator(),

  }

  /**
   * @since NEXT (but since 28.1 in the JRE flavor)
   */
  public static SpliteratorTester<Long> ofLong(Supplier<Spliterator.OfLong> spliteratorSupplier) {
    return new SpliteratorTester<>(
        ImmutableSet.of(
            () -> new GeneralSpliteratorOfObject<>(spliteratorSupplier.get()),

  }

  /**
   * @since 28.1 (but only since 33.4.0 in the Android flavor)
   */
  public static SpliteratorTester<Long> ofLong(Supplier<Spliterator.OfLong> spliteratorSupplier) {
    return new SpliteratorTester<>(
        ImmutableSet.of(
            () -> new GeneralSpliteratorOfObject<>(spliteratorSupplier.get()),

    long estimatedSize = 0L;
    ImmutableList.Builder<Spliterator.OfLong> splitrsBuilder =
        new ImmutableList.Builder<>(streams.length);
    for (LongStream stream : streams) {
      isParallel |= stream.isParallel();
      Spliterator.OfLong splitr = stream.spliterator();
      splitrsBuilder.add(splitr);
      characteristics &= splitr.characteristics();

    @SuppressWarnings("Java7ApiChecker")
    @IgnoreJRERequirement // Users will use this only if they're already using streams.
    @CanIgnoreReturnValue
    public Builder addAll(LongStream stream) {
      Spliterator.OfLong spliterator = stream.spliterator();
      long size = spliterator.getExactSizeIfKnown();
      if (size > 0) { // known *and* nonempty
        ensureRoomFor(Ints.saturatedCast(size));
      }

    /*
     * This is an override that is not directly visible to callers, so NewApi will catch calls to
     * Collection.spliterator() where necessary.
     */
    @IgnoreJRERequirement
    public Spliterator.OfLong spliterator() {
      return Spliterators.spliterator(array, start, end, 0);
    }

    @Override
    public boolean contains(@CheckForNull Object target) {
      // Overridden to prevent a ton of boxing

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