1 /* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.os; 18 19 import junit.framework.TestCase; 20 import android.os.Handler; 21 import android.os.HandlerThread; 22 import android.os.Message; 23 import android.os.Process; 24 import android.test.suitebuilder.annotation.MediumTest; 25 import android.test.suitebuilder.annotation.SmallTest; 26 27 public class HandlerThreadTest extends TestCase { 28 private static final int TEST_WHAT = 1; 29 30 private boolean mGotMessage = false; 31 private int mGotMessageWhat = -1; 32 private volatile boolean mDidSetup = false; 33 private volatile int mLooperTid = -1; 34 35 @MediumTest 36 public void testHandlerThread() throws Exception { 37 HandlerThread th1 = new HandlerThread("HandlerThreadTest") { 38 protected void onLooperPrepared() { 39 synchronized (HandlerThreadTest.this) { 40 mDidSetup = true; 41 mLooperTid = Process.myTid(); 42 HandlerThreadTest.this.notify(); 43 } 44 } 45 }; 46 47 assertFalse(th1.isAlive()); 48 assertNull(th1.getLooper()); 49 50 th1.start(); 51 52 assertTrue(th1.isAlive()); 53 assertNotNull(th1.getLooper()); 54 55 // The call to getLooper() internally blocks until the looper is 56 // available, but will call onLooperPrepared() after that. So we 57 // need to block here to wait for our onLooperPrepared() to complete 58 // and fill in the values we expect. 59 synchronized (this) { 60 while (!mDidSetup) { 61 try { 62 wait(); 63 } catch (InterruptedException e) { 64 } 65 } 66 } 67 68 // Make sure that the process was set. 69 assertNotSame(-1, mLooperTid); 70 // Make sure that the onLooperPrepared() was called on a different thread. 71 assertNotSame(Process.myTid(), mLooperTid); 72 73 final Handler h1 = new Handler(th1.getLooper()) { 74 public void handleMessage(Message msg) { 75 assertEquals(TEST_WHAT, msg.what); 76 // Ensure that we are running on the same thread in which the looper was setup on. 77 assertEquals(mLooperTid, Process.myTid()); 78 79 mGotMessageWhat = msg.what; 80 mGotMessage = true; 81 synchronized(this) { 82 notifyAll(); 83 } 84 } 85 }; 86 87 Message msg = h1.obtainMessage(TEST_WHAT); 88 89 synchronized (h1) { 90 // wait until we have the lock before sending the message. 91 h1.sendMessage(msg); 92 try { 93 // wait for the message to be handled 94 h1.wait(); 95 } catch (InterruptedException e) { 96 } 97 } 98 99 assertTrue(mGotMessage); 100 assertEquals(TEST_WHAT, mGotMessageWhat); 101 } 102 } 103
