android - 不休眠测试 PendingIntent 发送

Question

我得到了以下测试用例:

Intent intent = new Intent("test");
PendingIntent pendingIntent = PendingIntent.getBroadcast(getContext(), 1, intent, PendingIntent.FLAG_UPDATE_CURRENT);
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction("test");
testReceiver = new BroadcastReceiver() {
  @Override
  public void onReceive(Context context, Intent intent) {
    recieved=true;
  }
};
getContext().registerReceiver(testReceiver,intentFilter );
pendingIntent.send();
Thread.sleep(100);

assertTrue(recieved);

有没有办法在没有 Thread.sleep 的情况下使这个测试通过？

Answer 1

您可以使用 CountDownLatch 来等待类似事件的发生。你用一个计数来初始化它。 await() 方法将等待计数达到 0。当计数达到 0 时，它们将停止阻塞(或者如果您指定超时，如果在计数达到 0 之前超时，它将返回 false)。

这是您修改后的示例代码以使用 CountDownLatch:

CountIntent intent = new Intent("test");
PendingIntent pendingIntent = PendingIntent.getBroadcast(getContext(), 1, intent, PendingIntent.FLAG_UPDATE_CURRENT);
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction("test");

final CountDownLatch countDownLatch = new CountDownLatch(1);
testReceiver = new BroadcastReceiver() {
  @Override
  public void onReceive(Context context, Intent intent) {
    countDownLatch.countDown();
  }
};
getContext().registerReceiver(testReceiver,intentFilter );
pendingIntent.send();

assertTrue(countDownLatch.await(1, TimeUnit.SECONDS));