@Test
public void shouldRecognizeMemoizedFunctions() {
final Function5<Integer, Integer, Integer, Integer, Integer, Integer> f =
(i1, i2, i3, i4, i5) -> null;
final Function5<Integer, Integer, Integer, Integer, Integer, Integer> memo = f.memoized();
assertThat(f.isMemoized()).isFalse();
assertThat(memo.isMemoized()).isTrue();
}
