| /* |
| * Copyright (C) 2014 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.google.android.apps.common.testing.ui.espresso.base; |
| |
| import junit.framework.TestCase; |
| |
| import java.util.concurrent.Callable; |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.FutureTask; |
| import java.util.concurrent.LinkedBlockingQueue; |
| import java.util.concurrent.ThreadPoolExecutor; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| |
| /** |
| * Unit test for {@link AsyncTaskPoolMonitor} |
| */ |
| public class AsyncTaskPoolMonitorTest extends TestCase { |
| |
| private final ThreadPoolExecutor testThreadPool = new ThreadPoolExecutor( |
| 4, 4, 1, TimeUnit.SECONDS, new LinkedBlockingQueue<Runnable>()); |
| |
| private AsyncTaskPoolMonitor monitor = new AsyncTaskPoolMonitor(testThreadPool); |
| |
| @Override |
| public void tearDown() throws Exception { |
| testThreadPool.shutdownNow(); |
| super.tearDown(); |
| } |
| |
| public void testIsIdle_onEmptyPool() throws Exception { |
| assertTrue(monitor.isIdleNow()); |
| final AtomicBoolean isIdle = new AtomicBoolean(false); |
| // since we're already idle, this should be ran immedately on our thread. |
| monitor.notifyWhenIdle(new Runnable() { |
| @Override |
| public void run() { |
| isIdle.set(true); |
| } |
| }); |
| assertTrue(isIdle.get()); |
| } |
| |
| public void testIsIdle_withRunningTask() throws Exception { |
| final CountDownLatch runLatch = new CountDownLatch(1); |
| testThreadPool.submit(new Runnable() { |
| @Override |
| public void run() { |
| runLatch.countDown(); |
| try { |
| Thread.sleep(50000); |
| } catch (InterruptedException ie) { |
| throw new RuntimeException(ie); |
| } |
| } |
| }); |
| assertTrue(runLatch.await(1, TimeUnit.SECONDS)); |
| assertFalse(monitor.isIdleNow()); |
| |
| final AtomicBoolean isIdle = new AtomicBoolean(false); |
| monitor.notifyWhenIdle(new Runnable() { |
| @Override |
| public void run() { |
| isIdle.set(true); |
| } |
| }); |
| // runnable shouldn't be run ever.. |
| assertFalse(isIdle.get()); |
| } |
| |
| |
| public void testIdleNotificationAndRestart() throws Exception { |
| |
| FutureTask<Thread> workerThreadFetchTask = new FutureTask<Thread>(new Callable<Thread>() { |
| @Override |
| public Thread call() { |
| return Thread.currentThread(); |
| } |
| }); |
| testThreadPool.submit(workerThreadFetchTask); |
| |
| Thread workerThread = workerThreadFetchTask.get(); |
| |
| final CountDownLatch runLatch = new CountDownLatch(1); |
| final CountDownLatch exitLatch = new CountDownLatch(1); |
| |
| testThreadPool.submit(new Runnable() { |
| @Override |
| public void run() { |
| runLatch.countDown(); |
| try { |
| exitLatch.await(); |
| } catch (InterruptedException ie) { |
| throw new RuntimeException(ie); |
| } |
| } |
| }); |
| |
| assertTrue(runLatch.await(1, TimeUnit.SECONDS)); |
| final CountDownLatch notificationLatch = new CountDownLatch(1); |
| monitor.notifyWhenIdle(new Runnable() { |
| @Override |
| public void run() { |
| notificationLatch.countDown(); |
| } |
| }); |
| // give some time for the idle detection threads to spin up. |
| Thread.sleep(2000); |
| // interrupt one of them |
| workerThread.interrupt(); |
| Thread.sleep(1000); |
| // unblock the dummy work item. |
| exitLatch.countDown(); |
| assertTrue(notificationLatch.await(1, TimeUnit.SECONDS)); |
| assertTrue(monitor.isIdleNow()); |
| } |
| |
| public void testIdleNotification_extraWork() throws Exception { |
| final CountDownLatch firstRunLatch = new CountDownLatch(1); |
| final CountDownLatch firstExitLatch = new CountDownLatch(1); |
| |
| testThreadPool.submit(new Runnable() { |
| @Override |
| public void run() { |
| firstRunLatch.countDown(); |
| try { |
| firstExitLatch.await(); |
| } catch (InterruptedException ie) { |
| throw new RuntimeException(ie); |
| } |
| } |
| }); |
| |
| assertTrue(firstRunLatch.await(1, TimeUnit.SECONDS)); |
| |
| final CountDownLatch notificationLatch = new CountDownLatch(1); |
| monitor.notifyWhenIdle(new Runnable() { |
| @Override |
| public void run() { |
| notificationLatch.countDown(); |
| } |
| }); |
| |
| final CountDownLatch secondRunLatch = new CountDownLatch(1); |
| final CountDownLatch secondExitLatch = new CountDownLatch(1); |
| testThreadPool.submit(new Runnable() { |
| @Override |
| public void run() { |
| secondRunLatch.countDown(); |
| try { |
| secondExitLatch.await(); |
| } catch (InterruptedException ie) { |
| throw new RuntimeException(ie); |
| } |
| } |
| }); |
| |
| assertFalse(notificationLatch.await(10, TimeUnit.MILLISECONDS)); |
| firstExitLatch.countDown(); |
| assertFalse(notificationLatch.await(500, TimeUnit.MILLISECONDS)); |
| secondExitLatch.countDown(); |
| assertTrue(notificationLatch.await(1, TimeUnit.SECONDS)); |
| assertTrue(monitor.isIdleNow()); |
| } |
| } |