@Test
public void tap() {
MutableList<Integer> tapResult = Lists.mutable.of();
Interval interval = Interval.fromTo(10, -10).by(-5);
LazyIterable<Integer> lazyTapIterable = interval.tap(tapResult::add);
lazyTapIterable.each(x -> {}); // force evaluation
Assert.assertEquals(interval, tapResult);
}
@Test
public void distinct() {
LazyIterable<Integer> integers = Interval.oneTo(1000000000);
Assert.assertEquals(FastList.newListWith(1, 2, 3, 4, 5), integers.distinct().take(5).toList());
LazyIterable<Integer> lazyInterval = Interval.oneTo(1000000).flatCollect(Interval::oneTo);
LazyIterable<Integer> distinct = lazyInterval.distinct();
LazyIterable<Integer> take = distinct.take(5);
Assert.assertEquals(Lists.immutable.of(1, 2, 3, 4, 5), take.toList());
}