LazyList implements Cloneable, Serializable { public static Object addArray(Object list, Object[] array) { for (int i = 0; array != null && i < array.length; i++) list = LazyList.add(list, array[i]); return list; } private  LazyList(); @SuppressWarnings("unchecked") static Object add(Object list, Object item); @SuppressWarnings("unchecked") static Object add(Object list, int index, Object item); static Object addCollection(Object list, Collection<?> collection); static Object addArray(Object list, Object[] array); static Object ensureSize(Object list, int initialSize); static Object remove(Object list, Object o); static Object remove(Object list, int i); static List<E> getList(Object list); @SuppressWarnings("unchecked") static List<E> getList(Object list, boolean nullForEmpty); static boolean hasEntry(Object list); static boolean isEmpty(Object list); static String[] toStringArray(Object list); static Object toArray(Object list, Class<?> clazz); static int size(Object list); @SuppressWarnings("unchecked") static E get(Object list, int i); static boolean contains(Object list, Object item); static Object clone(Object list); static String toString(Object list); @SuppressWarnings("unchecked") static Iterator<E> iterator(Object list); @SuppressWarnings("unchecked") static ListIterator<E> listIterator(Object list);  }
@Test void testAddArray_NullInput_NullArray() { String[] arr = null; Object list = LazyList.addArray(null, arr); assertNull(list); }
@Test void testAddArray_NullInput_EmptyArray() { String[] arr = new String[0]; Object list = LazyList.addArray(null, arr); if (STRICT) { assertNotNull(list); assertTrue(list instanceof List); } }