public void testClear() { LongArrayAndSize l = new LongArrayAndSize(10); for (long i = 0; i < 10; i++) l.add(i); l.clear(); for (long i = 0; i < 10; i++) l.add(i * 2); for (long i = 0; i < 10; i++) assertEquals(i * 2, l.get((int) i)); assertEquals(10, l.size()); }