CopyOnWriteArraySetTest.java 文件源码

/**
 * iterator() returns an iterator containing the elements of the
 * set in insertion order
 */
public void testIterator() {
    Collection empty = new CopyOnWriteArraySet();
    assertFalse(empty.iterator().hasNext());
    try {
        empty.iterator().next();
        shouldThrow();
    } catch (NoSuchElementException success) {}

    Integer[] elements = new Integer[SIZE];
    for (int i = 0; i < SIZE; i++)
        elements[i] = i;
    Collections.shuffle(Arrays.asList(elements));
    Collection<Integer> full = populatedSet(elements);

    Iterator it = full.iterator();
    for (int j = 0; j < SIZE; j++) {
        assertTrue(it.hasNext());
        assertEquals(elements[j], it.next());
    }
    assertIteratorExhausted(it);
}