1 /* 2 * Copyright (C) 2021 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.compat.testing.app; 18 19 import static org.junit.Assume.assumeTrue; 20 21 import android.app.Instrumentation; 22 import android.content.Context; 23 import android.content.pm.SharedLibraryInfo; 24 import android.util.Log; 25 26 import androidx.test.platform.app.InstrumentationRegistry; 27 import androidx.test.runner.AndroidJUnit4; 28 29 import com.android.modules.utils.build.SdkLevel; 30 31 import com.google.common.collect.ImmutableList; 32 33 import org.junit.After; 34 import org.junit.Before; 35 import org.junit.Test; 36 import org.junit.runner.RunWith; 37 38 import java.io.File; 39 import java.nio.file.Files; 40 import java.nio.file.Path; 41 import java.util.List; 42 import java.util.Locale; 43 44 /** 45 * Device-side helper app for obtaining shared libraries. 46 * 47 * <p>It is not technically a test as it simply collects information, but it simplifies the usage 48 * and communication with host-side tests. 49 */ 50 @RunWith(AndroidJUnit4.class) 51 public class SharedLibraryInfoDeviceTest { 52 53 private static final String TAG = "SharedLibraryInfoDeviceTest"; 54 55 private final Instrumentation instrumentation = InstrumentationRegistry.getInstrumentation(); 56 private final Context context = instrumentation.getTargetContext(); 57 58 @Before before()59 public void before() { 60 assumeTrue(SdkLevel.isAtLeastS()); 61 instrumentation.getUiAutomation().adoptShellPermissionIdentity(); 62 } 63 64 @After after()65 public void after() { 66 instrumentation.getUiAutomation().dropShellPermissionIdentity(); 67 } 68 69 /** 70 * Collects details about all shared libraries on the device and writes them to disk. 71 */ 72 @Test collectSharedLibraryPaths()73 public void collectSharedLibraryPaths() throws Exception { 74 List<SharedLibraryInfo> sharedLibraries = 75 context.getPackageManager().getSharedLibraries(0); 76 77 ImmutableList.Builder<String> content = ImmutableList.builder(); 78 for (SharedLibraryInfo sharedLibrary : sharedLibraries) { 79 if (!sharedLibrary.isNative()) { 80 content.add(String.format(Locale.US, "%s %d %d %s", 81 sharedLibrary.getName(), 82 sharedLibrary.getType(), 83 sharedLibrary.getLongVersion(), 84 String.join(" ", sharedLibrary.getAllCodePaths()))); 85 } 86 } 87 88 Path detailsFilepath = new File("/sdcard/shared-libs.txt").toPath(); 89 ImmutableList<String> lines = content.build(); 90 Log.i(TAG, String.format("Writing details about %d shared libraries to %s", 91 lines.size(), detailsFilepath)); 92 Files.write(detailsFilepath, lines); 93 } 94 95 } 96