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| 1 // Copyright 2017 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 package org.chromium.base.test; |
| 6 |
| 7 import android.content.Context; |
| 8 import android.content.ContextWrapper; |
| 9 import android.content.SharedPreferences; |
| 10 import android.content.pm.ApplicationInfo; |
| 11 import android.content.pm.PackageManager; |
| 12 |
| 13 import org.chromium.base.Log; |
| 14 import org.chromium.base.annotations.MainDex; |
| 15 |
| 16 import java.io.File; |
| 17 import java.io.IOException; |
| 18 import java.io.Serializable; |
| 19 import java.lang.reflect.Field; |
| 20 import java.util.Arrays; |
| 21 import java.util.Comparator; |
| 22 |
| 23 /** |
| 24 * Functionality common to the JUnit3 and JUnit4 runners. |
| 25 */ |
| 26 @MainDex |
| 27 class BaseChromiumRunnerCommon { |
| 28 private static final String TAG = "base_test"; |
| 29 |
| 30 /** |
| 31 * A ContextWrapper that allows multidex test APKs to extract secondary dex
es into |
| 32 * the APK under test's data directory. |
| 33 */ |
| 34 @MainDex |
| 35 static class MultiDexContextWrapper extends ContextWrapper { |
| 36 private Context mAppContext; |
| 37 |
| 38 MultiDexContextWrapper(Context instrContext, Context appContext) { |
| 39 super(instrContext); |
| 40 mAppContext = appContext; |
| 41 } |
| 42 |
| 43 @Override |
| 44 public File getFilesDir() { |
| 45 return mAppContext.getFilesDir(); |
| 46 } |
| 47 |
| 48 @Override |
| 49 public SharedPreferences getSharedPreferences(String name, int mode) { |
| 50 return mAppContext.getSharedPreferences(name, mode); |
| 51 } |
| 52 |
| 53 @Override |
| 54 public PackageManager getPackageManager() { |
| 55 return new PackageManagerWrapper(super.getPackageManager()) { |
| 56 @Override |
| 57 public ApplicationInfo getApplicationInfo(String packageName, in
t flags) { |
| 58 try { |
| 59 ApplicationInfo ai = super.getApplicationInfo(packageNam
e, flags); |
| 60 if (packageName.equals(getPackageName())) { |
| 61 ApplicationInfo appAi = |
| 62 super.getApplicationInfo(mAppContext.getPack
ageName(), flags); |
| 63 File dataDir = new File(appAi.dataDir, "test-multide
x"); |
| 64 if (!dataDir.exists() && !dataDir.mkdirs()) { |
| 65 throw new IOException(String.format( |
| 66 "Unable to create test multidex director
y \"%s\"", |
| 67 dataDir.getPath())); |
| 68 } |
| 69 ai.dataDir = dataDir.getPath(); |
| 70 } |
| 71 return ai; |
| 72 } catch (Exception e) { |
| 73 Log.e(TAG, "Failed to get application info for %s", pack
ageName, e); |
| 74 } |
| 75 return null; |
| 76 } |
| 77 }; |
| 78 } |
| 79 } |
| 80 |
| 81 /** |
| 82 * Ensure all test dex entries precede app dex entries. |
| 83 * |
| 84 * @param cl ClassLoader to modify. Assumed to be a derivative of |
| 85 * {@link dalvik.system.BaseDexClassLoader}. If this isn't |
| 86 * the case, reordering will fail. |
| 87 */ |
| 88 static void reorderDexPathElements(ClassLoader cl, Context context, Context
targetContext) { |
| 89 try { |
| 90 Log.i(TAG, |
| 91 "Reordering dex files. If you're building a multidex test AP
K and see a " |
| 92 + "class resolving to an unexpected implementation,
this may be why."); |
| 93 Field pathListField = findField(cl, "pathList"); |
| 94 Object dexPathList = pathListField.get(cl); |
| 95 Field dexElementsField = findField(dexPathList, "dexElements"); |
| 96 Object[] dexElementsList = (Object[]) dexElementsField.get(dexPathLi
st); |
| 97 Arrays.sort(dexElementsList, |
| 98 new DexListReorderingComparator( |
| 99 context.getPackageName(), targetContext.getPackageNa
me())); |
| 100 dexElementsField.set(dexPathList, dexElementsList); |
| 101 } catch (Exception e) { |
| 102 Log.e(TAG, "Failed to reorder dex elements for testing.", e); |
| 103 } |
| 104 } |
| 105 |
| 106 /** |
| 107 * Comparator for sorting dex list entries. |
| 108 * |
| 109 * Using this to sort a list of dex list entries will result in the followi
ng order: |
| 110 * - Strings that contain neither the test package nor the app package in
lexicographical |
| 111 * order. |
| 112 * - Strings that contain the test package in lexicographical order. |
| 113 * - Strings that contain the app package but not the test package in lexi
cographical order. |
| 114 */ |
| 115 private static class DexListReorderingComparator implements Comparator<Objec
t>, Serializable { |
| 116 private String mTestPackage; |
| 117 private String mAppPackage; |
| 118 |
| 119 public DexListReorderingComparator(String testPackage, String appPackage
) { |
| 120 mTestPackage = testPackage; |
| 121 mAppPackage = appPackage; |
| 122 } |
| 123 |
| 124 @Override |
| 125 public int compare(Object o1, Object o2) { |
| 126 String s1 = o1.toString(); |
| 127 String s2 = o2.toString(); |
| 128 if (s1.contains(mTestPackage)) { |
| 129 if (!s2.contains(mTestPackage)) { |
| 130 if (s2.contains(mAppPackage)) { |
| 131 return -1; |
| 132 } else { |
| 133 return 1; |
| 134 } |
| 135 } |
| 136 } else if (s1.contains(mAppPackage)) { |
| 137 if (s2.contains(mTestPackage)) { |
| 138 return 1; |
| 139 } else if (!s2.contains(mAppPackage)) { |
| 140 return 1; |
| 141 } |
| 142 } else if (s2.contains(mTestPackage) || s2.contains(mAppPackage)) { |
| 143 return -1; |
| 144 } |
| 145 return s1.compareTo(s2); |
| 146 } |
| 147 } |
| 148 |
| 149 private static Field findField(Object instance, String name) throws NoSuchFi
eldException { |
| 150 for (Class<?> clazz = instance.getClass(); clazz != null; clazz = clazz.
getSuperclass()) { |
| 151 try { |
| 152 Field f = clazz.getDeclaredField(name); |
| 153 f.setAccessible(true); |
| 154 return f; |
| 155 } catch (NoSuchFieldException e) { |
| 156 } |
| 157 } |
| 158 throw new NoSuchFieldException( |
| 159 "Unable to find field " + name + " in " + instance.getClass()); |
| 160 } |
| 161 } |
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