@Test
public void testExists() throws Exception {
List<Integer> list = List.list(1, 2, 3, 4, 5, 6, 7, 8);
assertTrue(list.exists(x -> x < 4));
assertFalse(list.exists(x -> x < 1));
assertTrue(list.exists(x -> x > 0));
assertTrue(list.exists(x -> x > 4));
}
@Test
public void testExistsEmpty() throws Exception {
List<Integer> list = List.list();
assertFalse(list.exists(x -> x < 4));
assertFalse(list.exists(x -> x < 1));
assertFalse(list.exists(x -> x > 0));
assertFalse(list.exists(x -> x > 4));
}