1/* 2 * Copyright (C) 2008 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 17package android.os; 18 19import android.content.Context; 20import android.test.AndroidTestCase; 21import android.test.suitebuilder.annotation.SmallTest; 22 23public class PowerManagerTest extends AndroidTestCase { 24 25 private PowerManager mPm; 26 27 /** 28 * Setup any common data for the upcoming tests. 29 */ 30 @Override 31 public void setUp() throws Exception { 32 super.setUp(); 33 mPm = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 34 } 35 36 /** 37 * Confirm that the setup is good. 38 * 39 * @throws Exception 40 */ 41 @SmallTest 42 public void testPreconditions() throws Exception { 43 assertNotNull(mPm); 44 } 45 46 /** 47 * Confirm that we can create functional wakelocks. 48 * 49 * @throws Exception 50 */ 51 @SmallTest 52 public void testNewWakeLock() throws Exception { 53 PowerManager.WakeLock wl = mPm.newWakeLock(PowerManager.FULL_WAKE_LOCK, "FULL_WAKE_LOCK"); 54 doTestWakeLock(wl); 55 56 wl = mPm.newWakeLock(PowerManager.SCREEN_BRIGHT_WAKE_LOCK, "SCREEN_BRIGHT_WAKE_LOCK"); 57 doTestWakeLock(wl); 58 59 wl = mPm.newWakeLock(PowerManager.SCREEN_DIM_WAKE_LOCK, "SCREEN_DIM_WAKE_LOCK"); 60 doTestWakeLock(wl); 61 62 wl = mPm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "PARTIAL_WAKE_LOCK"); 63 doTestWakeLock(wl); 64 65 // TODO: Some sort of functional test (maybe not in the unit test here?) 66 // that confirms that things are really happening e.g. screen power, keyboard power. 67} 68 69 /** 70 * Confirm that we can't create dysfunctional wakelocks. 71 * 72 * @throws Exception 73 */ 74 @SmallTest 75 public void testBadNewWakeLock() throws Exception { 76 final int badFlags = PowerManager.SCREEN_BRIGHT_WAKE_LOCK 77 | PowerManager.SCREEN_DIM_WAKE_LOCK; 78 // wrap in try because we want the error here 79 try { 80 PowerManager.WakeLock wl = mPm.newWakeLock(badFlags, "foo"); 81 } catch (IllegalArgumentException e) { 82 return; 83 } 84 fail("Bad WakeLock flag was not caught."); 85 } 86 87 /** 88 * Apply a few tests to a wakelock to make sure it's healthy. 89 * 90 * @param wl The wakelock to be tested. 91 */ 92 private void doTestWakeLock(PowerManager.WakeLock wl) { 93 // First try simple acquire/release 94 wl.acquire(); 95 assertTrue(wl.isHeld()); 96 wl.release(); 97 assertFalse(wl.isHeld()); 98 99 // Try ref-counted acquire/release 100 wl.setReferenceCounted(true); 101 wl.acquire(); 102 assertTrue(wl.isHeld()); 103 wl.acquire(); 104 assertTrue(wl.isHeld()); 105 wl.release(); 106 assertTrue(wl.isHeld()); 107 wl.release(); 108 assertFalse(wl.isHeld()); 109 110 // Try non-ref-counted 111 wl.setReferenceCounted(false); 112 wl.acquire(); 113 assertTrue(wl.isHeld()); 114 wl.acquire(); 115 assertTrue(wl.isHeld()); 116 wl.release(); 117 assertFalse(wl.isHeld()); 118 119 // TODO: Threaded test (needs handler) to make sure timed wakelocks work too 120 } 121} 122