@Test
void testListIterator_NonListInput() {

    String input = "a";
    ListIterator<?> iter = LazyList.listIterator(input);
    assertNotNull(iter);
    assertTrue(iter.hasNext());
    assertFalse(iter.hasPrevious());
    assertEquals("a", iter.next());
    assertFalse(iter.hasNext());
    assertTrue(iter.hasPrevious());
}