@Test
public void optionAndStream() {
Function<Integer, Integer> add2 = i -> i + 2;
Function<StreamT<Integer>, StreamT<Integer>> optTAdd2 = StreamT.lift(add2);
Stream<Integer> nums = Stream.of(1, 2);
AnyM<Stream<Integer>> stream = AnyM.fromOptional(Optional.of(nums));
List<Integer> results =
optTAdd2
.apply(StreamT.of(stream))
.unwrap()
.<Optional<Stream<Integer>>>unwrap()
.get()
.collect(Collectors.toList());
assertThat(results, equalTo(Arrays.asList(3, 4)));
}
