1 /* 2 * Copyright (C) 2024 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.resources.registerresourcepaths2; 18 19 import static org.junit.Assume.assumeTrue; 20 21 import android.content.Context; 22 import android.os.Handler; 23 import android.os.HandlerThread; 24 import android.util.Log; 25 import android.webkit.WebSettings; 26 27 import androidx.test.InstrumentationRegistry; 28 import androidx.test.annotation.UiThreadTest; 29 30 import com.android.compatibility.common.util.NullWebViewUtils; 31 32 import org.junit.After; 33 import org.junit.Assert; 34 import org.junit.Before; 35 import org.junit.Test; 36 37 public class RegisterResourcePathsTest { 38 private HandlerThread mBackgroundThread; 39 private Handler mBackgroundHandler; 40 private static final String TAG = "RegisterSharedLibTest"; 41 42 @Before setUp()43 public void setUp() { 44 startBackgroundThread(); 45 } 46 47 @After tearDown()48 public void tearDown() { 49 stopBackgroundThread(); 50 } 51 52 @Test 53 @UiThreadTest testWebViewInitializeOnBackGroundThread()54 public void testWebViewInitializeOnBackGroundThread() { 55 if (!NullWebViewUtils.isWebViewAvailable()) { 56 assumeTrue("WebView is not available on the device.", false); 57 } 58 59 final Context context = InstrumentationRegistry.getContext(); 60 61 mBackgroundHandler.post(new Runnable() { 62 @Override 63 public void run() { 64 try { 65 // This would trigger WebView init behind scene and post tasks on main thread. 66 // It could help to verify that the resources are accessible from the main 67 // thread if it returns without process crashing. 68 final String userAgent = WebSettings.getDefaultUserAgent(context); 69 Assert.assertNotEquals("", userAgent); 70 } catch (Exception e) { 71 Assert.fail("Exception occurred during WebView initialization: " 72 + e.getMessage()); 73 } 74 } 75 }); 76 } 77 startBackgroundThread()78 private void startBackgroundThread() { 79 mBackgroundThread = new HandlerThread("WebViewBackground"); 80 mBackgroundThread.start(); 81 mBackgroundHandler = new Handler(mBackgroundThread.getLooper()); 82 } 83 stopBackgroundThread()84 private void stopBackgroundThread() { 85 mBackgroundThread.quitSafely(); 86 try { 87 mBackgroundThread.join(); 88 mBackgroundThread = null; 89 mBackgroundHandler = null; 90 } catch (InterruptedException e) { 91 Log.e(TAG, "Interrupted exception thrown while stopping WebViewBackground thread."); 92 } 93 } 94 } 95