@Test
public void containsComparatorTList() {

	List<Integer> list = new ArrayList<>();
	list.addAll(Arrays.asList(1, 4, 6, 12, 30));
	
	assertFalse(ListUtil.contains(list, new NaturalOrderComparator<Integer>(), 0));
	assertTrue(ListUtil.contains(list, new NaturalOrderComparator<Integer>(), 1));
	assertFalse(ListUtil.contains(list, new NaturalOrderComparator<Integer>(), 2));
	assertFalse(ListUtil.contains(list, new NaturalOrderComparator<Integer>(), 3));
	assertTrue(ListUtil.contains(list, new NaturalOrderComparator<Integer>(), 4));
	assertFalse(ListUtil.contains(list, new NaturalOrderComparator<Integer>(), 5));
	assertTrue(ListUtil.contains(list, new NaturalOrderComparator<Integer>(), 6));
}