{
Object[] items = new Object[1];
array.toArray(items);
Assert.assertEquals(1, items[0]);
}
Assert.assertEquals(true, array.containsAll(Collections.singletonList(1)));
Assert.assertEquals(true, array.remove(Integer.valueOf(1)));
Assert.assertEquals(true, array.isEmpty());
array.addAll(Collections.singletonList(1));
Assert.assertEquals(1, array.size());
array.removeAll(Collections.singletonList(1));