| // Copyright 2017 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| package org.chromium.base.test; |
| |
| import android.content.Context; |
| import android.content.ContextWrapper; |
| import android.content.SharedPreferences; |
| import android.content.pm.ApplicationInfo; |
| import android.content.pm.PackageManager; |
| import android.support.v4.content.ContextCompat; |
| |
| import org.chromium.android.support.PackageManagerWrapper; |
| import org.chromium.base.Log; |
| import org.chromium.base.annotations.MainDex; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.io.Serializable; |
| import java.lang.reflect.Field; |
| import java.util.Arrays; |
| import java.util.Comparator; |
| |
| /** |
| * Functionality common to the JUnit3 and JUnit4 runners. |
| */ |
| @MainDex |
| class BaseChromiumRunnerCommon { |
| private static final String TAG = "base_test"; |
| |
| /** |
| * A ContextWrapper that allows multidex test APKs to extract secondary dexes into |
| * the APK under test's data directory. |
| */ |
| @MainDex |
| static class MultiDexContextWrapper extends ContextWrapper { |
| private Context mAppContext; |
| |
| MultiDexContextWrapper(Context instrContext, Context appContext) { |
| super(instrContext); |
| mAppContext = appContext; |
| } |
| |
| @Override |
| public File getFilesDir() { |
| return mAppContext.getFilesDir(); |
| } |
| |
| @Override |
| public SharedPreferences getSharedPreferences(String name, int mode) { |
| return mAppContext.getSharedPreferences(name, mode); |
| } |
| |
| @Override |
| public PackageManager getPackageManager() { |
| return new PackageManagerWrapper(super.getPackageManager()) { |
| @Override |
| public ApplicationInfo getApplicationInfo(String packageName, int flags) { |
| try { |
| ApplicationInfo ai = super.getApplicationInfo(packageName, flags); |
| if (packageName.equals(getPackageName())) { |
| File dataDir = new File( |
| ContextCompat.getCodeCacheDir(mAppContext), "test-multidex"); |
| if (!dataDir.exists() && !dataDir.mkdirs()) { |
| throw new IOException(String.format( |
| "Unable to create test multidex directory \"%s\"", |
| dataDir.getPath())); |
| } |
| ai.dataDir = dataDir.getPath(); |
| } |
| return ai; |
| } catch (Exception e) { |
| Log.e(TAG, "Failed to get application info for %s", packageName, e); |
| } |
| return null; |
| } |
| }; |
| } |
| } |
| |
| /** |
| * Ensure all test dex entries precede app dex entries. |
| * |
| * @param cl ClassLoader to modify. Assumed to be a derivative of |
| * {@link dalvik.system.BaseDexClassLoader}. If this isn't |
| * the case, reordering will fail. |
| */ |
| static void reorderDexPathElements(ClassLoader cl, Context context, Context targetContext) { |
| try { |
| Log.i(TAG, |
| "Reordering dex files. If you're building a multidex test APK and see a " |
| + "class resolving to an unexpected implementation, this may be why."); |
| Field pathListField = findField(cl, "pathList"); |
| Object dexPathList = pathListField.get(cl); |
| Field dexElementsField = findField(dexPathList, "dexElements"); |
| Object[] dexElementsList = (Object[]) dexElementsField.get(dexPathList); |
| Arrays.sort(dexElementsList, |
| new DexListReorderingComparator( |
| context.getPackageName(), targetContext.getPackageName())); |
| dexElementsField.set(dexPathList, dexElementsList); |
| } catch (Exception e) { |
| Log.e(TAG, "Failed to reorder dex elements for testing.", e); |
| } |
| } |
| |
| /** |
| * Comparator for sorting dex list entries. |
| * |
| * Using this to sort a list of dex list entries will result in the following order: |
| * - Strings that contain neither the test package nor the app package in lexicographical |
| * order. |
| * - Strings that contain the test package in lexicographical order. |
| * - Strings that contain the app package but not the test package in lexicographical order. |
| */ |
| private static class DexListReorderingComparator implements Comparator<Object>, Serializable { |
| private String mTestPackage; |
| private String mAppPackage; |
| |
| public DexListReorderingComparator(String testPackage, String appPackage) { |
| mTestPackage = testPackage; |
| mAppPackage = appPackage; |
| } |
| |
| @Override |
| public int compare(Object o1, Object o2) { |
| String s1 = o1.toString(); |
| String s2 = o2.toString(); |
| if (s1.contains(mTestPackage)) { |
| if (!s2.contains(mTestPackage)) { |
| if (s2.contains(mAppPackage)) { |
| return -1; |
| } else { |
| return 1; |
| } |
| } |
| } else if (s1.contains(mAppPackage)) { |
| if (s2.contains(mTestPackage)) { |
| return 1; |
| } else if (!s2.contains(mAppPackage)) { |
| return 1; |
| } |
| } else if (s2.contains(mTestPackage) || s2.contains(mAppPackage)) { |
| return -1; |
| } |
| return s1.compareTo(s2); |
| } |
| } |
| |
| private static Field findField(Object instance, String name) throws NoSuchFieldException { |
| for (Class<?> clazz = instance.getClass(); clazz != null; clazz = clazz.getSuperclass()) { |
| try { |
| Field f = clazz.getDeclaredField(name); |
| f.setAccessible(true); |
| return f; |
| } catch (NoSuchFieldException e) { |
| } |
| } |
| throw new NoSuchFieldException( |
| "Unable to find field " + name + " in " + instance.getClass()); |
| } |
| } |