public boolean isGermanHoliday(LocalDate date) {
  if (GERMAN_HOLIDAYS.contains(CustomHoliday.of(date.getDayOfMonth(), date.getMonthValue()))) {
    return true;
  }

  // Easter holidays Good Friday, Easter Monday, Ascension Day, Whit Monday.
  long diffFromEasterSunday =
      DAYS.between(easterCalculator.getEasterSunday(date.getYear()), date);

  Builder builder =
      LongStream.builder()
          .add(OFFSET_GOOD_FRIDAY)
          .add(OFFSET_EASTER_MONDAY)
          .add(OFFSET_ASCENSION_DAY)
          .add(OFFSET_WHIT_MONDAY);

  if (corpusChristiEnabled) {
    builder.add(OFFSET_CORPUS_CHRISTI);
  }

  return builder.build().anyMatch(c -> c == diffFromEasterSunday);
}
 

@Test
public void testDropWhile() {
    assertArrayEquals(new long[] { 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 }, LongStreamEx.range(100).dropWhile(
        i -> i % 10 < 5).limit(10).toArray());
    assertEquals(100, LongStreamEx.range(100).dropWhile(i -> i % 10 < 0).count());
    assertEquals(0, LongStreamEx.range(100).dropWhile(i -> i % 10 < 10).count());
    assertEquals(OptionalLong.of(0), LongStreamEx.range(100).dropWhile(i -> i % 10 < 0).findFirst());
    assertEquals(OptionalLong.empty(), LongStreamEx.range(100).dropWhile(i -> i % 10 < 10).findFirst());

    java.util.Spliterator.OfLong spltr = LongStreamEx.range(100).dropWhile(i -> i % 10 < 1).spliterator();
    assertTrue(spltr.tryAdvance((long x) -> assertEquals(1, x)));
    Builder builder = LongStream.builder();
    spltr.forEachRemaining(builder);
    assertArrayEquals(LongStreamEx.range(2, 100).toArray(), builder.build().toArray());
}