@Test
void characteristics() {

    assertNotEquals(0, instance.characteristics() & Spliterator.NONNULL);
    assertNotEquals(0, instance.characteristics() & Spliterator.SIZED);
    assertNotEquals(0, instance.characteristics() & Spliterator.SUBSIZED);
    assertNotEquals(0, instance.characteristics() & Spliterator.IMMUTABLE);
    assertNotEquals(0, instance.characteristics() & Spliterator.DISTINCT);
    assertNotEquals(0, instance.characteristics() & Spliterator.ORDERED);
}