@Test(timeout = 10000)
public void testGetContainers() throws YarnException, IOException {
Configuration conf = new Configuration();
final AHSClient client = new MockAHSClient();
client.init(conf);
client.start();
ApplicationId applicationId = ApplicationId.newInstance(1234, 5);
ApplicationAttemptId appAttemptId =
ApplicationAttemptId.newInstance(applicationId, 1);
List<ContainerReport> reports = client.getContainers(appAttemptId);