如何在robolectric 3.2中测试并发修改

@RunWith(RobolectricTestRunner.class)
public class ConcurrentModificationTest {

    @Test
    public void testConcurrentModification() {
        // 模拟并发修改的场景
        final List<String> list = new ArrayList<>();

        // 创建多个线程同时对list进行修改操作
        Thread thread1 = new Thread(new Runnable() {
            @Override
            public void run() {
                list.add("Item 1");
            }
        });

        Thread thread2 = new Thread(new Runnable() {
            @Override
            public void run() {
                list.add("Item 2");
            }
        });

        // 启动线程
        thread1.start();
        thread2.start();

        // 等待线程执行完毕
        try {
            thread1.join();
            thread2.join();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

        // 验证并发修改的结果
        assertEquals(2, list.size());
        assertTrue(list.contains("Item 1"));
        assertTrue(list.contains("Item 2"));
    }
}