1 /* 2 * Copyright (C) 2012 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.accessibilityservice.cts; 18 19 import android.accessibilityservice.AccessibilityServiceInfo; 20 import android.app.Activity; 21 import android.app.UiAutomation; 22 import android.test.ActivityInstrumentationTestCase2; 23 import android.view.accessibility.AccessibilityEvent; 24 25 import java.util.concurrent.TimeoutException; 26 27 /** 28 * Base text case for testing accessibility APIs by instrumenting an Activity. 29 */ 30 public abstract class AccessibilityActivityTestCase<T extends Activity> 31 extends ActivityInstrumentationTestCase2<T> { 32 /** 33 * Timeout required for pending Binder calls or event processing to 34 * complete. 35 */ 36 public static final long TIMEOUT_ASYNC_PROCESSING = 5000; 37 38 /** 39 * The timeout since the last accessibility event to consider the device idle. 40 */ 41 public static final long TIMEOUT_ACCESSIBILITY_STATE_IDLE = 500; 42 43 /** 44 * @param activityClass 45 */ AccessibilityActivityTestCase(Class<T> activityClass)46 public AccessibilityActivityTestCase(Class<T> activityClass) { 47 super(activityClass); 48 } 49 50 @Override setUp()51 public void setUp() throws Exception { 52 super.setUp(); 53 54 AccessibilityServiceInfo info = getInstrumentation().getUiAutomation().getServiceInfo(); 55 info.flags |= AccessibilityServiceInfo.FLAG_REQUEST_TOUCH_EXPLORATION_MODE; 56 info.flags &= ~AccessibilityServiceInfo.FLAG_INCLUDE_NOT_IMPORTANT_VIEWS; 57 getInstrumentation().getUiAutomation().setServiceInfo(info); 58 59 startActivityAndWaitForFirstEvent(); 60 61 waitForIdle(); 62 } 63 64 /** 65 * Waits for the UI do be idle. 66 * 67 * @throws TimeoutException if idle cannot be detected. 68 */ waitForIdle()69 public void waitForIdle() throws TimeoutException { 70 getInstrumentation().getUiAutomation().waitForIdle( 71 TIMEOUT_ACCESSIBILITY_STATE_IDLE, 72 TIMEOUT_ASYNC_PROCESSING); 73 } 74 75 /** 76 * @return The string for a given <code>resId</code>. 77 */ getString(int resId)78 public String getString(int resId) { 79 return getInstrumentation().getContext().getString(resId); 80 } 81 82 /** 83 * Starts the activity under tests and waits for the first accessibility 84 * event from that activity. 85 */ startActivityAndWaitForFirstEvent()86 private void startActivityAndWaitForFirstEvent() throws Exception { 87 AccessibilityEvent awaitedEvent = 88 getInstrumentation().getUiAutomation().executeAndWaitForEvent( 89 new Runnable() { 90 @Override 91 public void run() { 92 getActivity(); 93 getInstrumentation().waitForIdleSync(); 94 } 95 }, 96 new UiAutomation.AccessibilityEventFilter() { 97 @Override 98 public boolean accept(AccessibilityEvent event) { 99 final int eventType = event.getEventType(); 100 // Do not check the package name since an event of this type may 101 // come concurrently from the app and from the IME (since input 102 // focus goes to the first focusable) but we dispatch one event 103 // of each type within a timeout. Hence, sometimes the window 104 // change event from the IME may override the one from the app. 105 return (eventType == AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 106 } 107 }, 108 TIMEOUT_ASYNC_PROCESSING); 109 assertNotNull(awaitedEvent); 110 } 111 } 112