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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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