| /* |
| * Copyright 2018 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 androidx.core.os; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| import static java.util.Arrays.asList; |
| import static java.util.concurrent.TimeUnit.SECONDS; |
| |
| import android.os.Handler; |
| import android.os.HandlerThread; |
| import android.os.Looper; |
| import android.os.Message; |
| |
| import androidx.test.filters.MediumTest; |
| import androidx.test.filters.SdkSuppress; |
| |
| import org.junit.After; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.Semaphore; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.atomic.AtomicReference; |
| |
| @MediumTest |
| public final class HandlerCompatTest { |
| private final HandlerThread mThread = new HandlerThread("handler-compat-test"); |
| |
| @Before |
| public void before() { |
| mThread.start(); |
| } |
| |
| @After |
| public void after() { |
| assertTrue(mThread.quit()); |
| } |
| |
| @Test |
| public void postDelayedWithToken() throws InterruptedException { |
| final Handler handler = new Handler(mThread.getLooper()); |
| |
| // Schedule a latch at 300ms to block the test thread. |
| final CountDownLatch latch = new CountDownLatch(1); |
| handler.postDelayed(new Runnable() { |
| @Override |
| public void run() { |
| latch.countDown(); |
| } |
| }, 300); |
| |
| final List<String> events = new ArrayList<>(); |
| final Object token = new Object(); |
| |
| // Schedule an event at 200ms with the token. |
| HandlerCompat.postDelayed(handler, new Runnable() { |
| @Override |
| public void run() { |
| events.add("200"); |
| } |
| }, token, 200); |
| |
| // Schedule an event at 100ms which removes future messages with the token. |
| HandlerCompat.postDelayed(handler, new Runnable() { |
| @Override |
| public void run() { |
| events.add("100"); |
| handler.removeCallbacksAndMessages(token); |
| } |
| }, token, 100); |
| |
| // Schedule an event immediately to ensure the delays are being honored. |
| handler.post(new Runnable() { |
| @Override |
| public void run() { |
| events.add("0"); |
| } |
| }); |
| |
| assertTrue(latch.await(1, SECONDS)); |
| assertEquals(asList("0", "100"), events); |
| } |
| |
| @Test |
| public void createAsyncAllApiLevels() throws InterruptedException { |
| Handler handler = HandlerCompat.createAsync(mThread.getLooper()); |
| |
| final CountDownLatch latch = new CountDownLatch(1); |
| Message message = Message.obtain(handler, new Runnable() { |
| @Override |
| public void run() { |
| latch.countDown(); |
| } |
| }); |
| |
| handler.sendMessage(message); |
| |
| assertTrue(latch.await(1, SECONDS)); |
| } |
| |
| @SdkSuppress(minSdkVersion = 17) |
| @Test |
| public void createAsyncWhenAsyncAvailable() throws InterruptedException { |
| Handler handler = HandlerCompat.createAsync(mThread.getLooper()); |
| |
| final CountDownLatch latch = new CountDownLatch(1); |
| final AtomicReference<Boolean> isAsync = new AtomicReference<>(); |
| final AtomicReference<Message> self = new AtomicReference<>(); |
| Message message = Message.obtain(handler, new Runnable() { |
| @Override |
| public void run() { |
| isAsync.set(MessageCompat.isAsynchronous(self.get())); |
| latch.countDown(); |
| } |
| }); |
| self.set(message); |
| |
| handler.sendMessage(message); |
| |
| assertTrue(latch.await(1, SECONDS)); |
| assertTrue(isAsync.get()); |
| } |
| |
| @Test |
| public void createAsyncWithCallbackAllApiLevels() throws InterruptedException { |
| final CountDownLatch latch = new CountDownLatch(1); |
| Handler handler = HandlerCompat.createAsync(mThread.getLooper(), new Handler.Callback() { |
| @Override |
| public boolean handleMessage(Message msg) { |
| latch.countDown(); |
| return true; |
| } |
| }); |
| |
| handler.sendEmptyMessage(0); |
| assertTrue(latch.await(1, SECONDS)); |
| } |
| |
| @SdkSuppress(minSdkVersion = 17) |
| @Test |
| public void createAsyncWithCallbackWhenAsyncAvailable() throws InterruptedException { |
| final CountDownLatch latch = new CountDownLatch(1); |
| final AtomicReference<Boolean> isAsync = new AtomicReference<>(); |
| Handler handler = HandlerCompat.createAsync(mThread.getLooper(), new Handler.Callback() { |
| @Override |
| public boolean handleMessage(Message msg) { |
| isAsync.set(MessageCompat.isAsynchronous(msg)); |
| latch.countDown(); |
| return true; |
| } |
| }); |
| |
| handler.sendEmptyMessage(0); |
| assertTrue(latch.await(1, SECONDS)); |
| assertTrue(isAsync.get()); |
| } |
| |
| @SdkSuppress(minSdkVersion = 16) |
| @Test |
| public void testHasCallbacks() { |
| Runnable r = new Runnable() { |
| @Override |
| public void run() { |
| // Meh? |
| } |
| }; |
| |
| PausedLooper looperThread = new PausedLooper(); |
| looperThread.start(); |
| |
| Handler handler = looperThread.getHandler(1000); |
| handler.post(r); |
| |
| assertTrue("Handler has callback for r", HandlerCompat.hasCallbacks(handler, r)); |
| } |
| |
| private static class PausedLooper extends Thread { |
| private final Semaphore mHandlerLock = new Semaphore(0); |
| private Handler mHandler; |
| |
| @Override |
| public void run() { |
| Looper.prepare(); |
| mHandler = new Handler(Looper.myLooper()); |
| mHandlerLock.release(); |
| } |
| |
| public Handler getHandler(long timeout) { |
| try { |
| mHandlerLock.tryAcquire(1, timeout, TimeUnit.MILLISECONDS); |
| } catch (InterruptedException ignored) { |
| } |
| return mHandler; |
| } |
| } |
| } |