1/*
2 * Copyright (C) 2016 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
17package art;
18
19import java.util.*;
20import java.lang.reflect.*;
21import java.nio.ByteBuffer;
22import dalvik.system.InMemoryDexClassLoader;
23
24public class Test1946 {
25  // Base64 encoded dex file containing the following classes. Note the class E cannot be loaded.
26  // public class A {}
27  // public class B {}
28  // public class C {}
29  // public class D {}
30  // public class E extends ClassNotThere {}
31  private static final byte[] TEST_CLASSES = Base64.getDecoder().decode(
32      "ZGV4CjAzNQDzTO8rVDlKlz80vQF4NLYV5MjMMjHlOtRoAwAAcAAAAHhWNBIAAAAAAAAAAOACAAAO" +
33      "AAAAcAAAAAgAAACoAAAAAQAAAMgAAAAAAAAAAAAAAAcAAADUAAAABQAAAAwBAAC8AQAArAEAACQC" +
34      "AAAsAgAANAIAADwCAABEAgAATAIAAFQCAABZAgAAXgIAAGMCAAB0AgAAeQIAAH4CAACSAgAABgAA" +
35      "AAcAAAAIAAAACQAAAAoAAAALAAAADAAAAA0AAAANAAAABwAAAAAAAAAAAAAAAAAAAAEAAAAAAAAA" +
36      "AgAAAAAAAAADAAAAAAAAAAQAAAAAAAAABQAAAAAAAAAGAAAAAAAAAAAAAAAAAAAABgAAAAAAAAAB" +
37      "AAAAAAAAAK4CAAAAAAAAAQAAAAAAAAAGAAAAAAAAAAIAAAAAAAAAuAIAAAAAAAACAAAAAAAAAAYA" +
38      "AAAAAAAAAwAAAAAAAADCAgAAAAAAAAQAAAAAAAAABgAAAAAAAAAEAAAAAAAAAMwCAAAAAAAABQAA" +
39      "AAAAAAADAAAAAAAAAAUAAAAAAAAA1gIAAAAAAAABAAEAAQAAAJUCAAAEAAAAcBAGAAAADgABAAEA" +
40      "AQAAAJoCAAAEAAAAcBAGAAAADgABAAEAAQAAAJ8CAAAEAAAAcBAGAAAADgABAAEAAQAAAKQCAAAE" +
41      "AAAAcBAGAAAADgABAAEAAQAAAKkCAAAEAAAAcBADAAAADgAGPGluaXQ+AAZBLmphdmEABkIuamF2" +
42      "YQAGQy5qYXZhAAZELmphdmEABkUuamF2YQADTEE7AANMQjsAA0xDOwAPTENsYXNzTm90VGhlcmU7" +
43      "AANMRDsAA0xFOwASTGphdmEvbGFuZy9PYmplY3Q7AAFWAAEABw4AAQAHDgABAAcOAAEABw4AAQAH" +
44      "DgAAAAEAAICABKwDAAABAAGAgATEAwAAAQACgIAE3AMAAAEABICABPQDAAABAAWAgASMBAsAAAAA" +
45      "AAAAAQAAAAAAAAABAAAADgAAAHAAAAACAAAACAAAAKgAAAADAAAAAQAAAMgAAAAFAAAABwAAANQA" +
46      "AAAGAAAABQAAAAwBAAABIAAABQAAAKwBAAACIAAADgAAACQCAAADIAAABQAAAJUCAAAAIAAABQAA" +
47      "AK4CAAAAEAAAAQAAAOACAAA=");
48  public class TMP1 {}
49  public class TMP2 {}
50  public class TMP3 extends ArrayList {}
51
52  private static void check(boolean b, String msg) {
53    if (!b) {
54      throw new Error("Test failed! " + msg);
55    }
56  }
57
58  private static <T> void checkEq(T[] full, T[] sub, String msg) {
59    List<T> f = Arrays.asList(full);
60    check(full.length == sub.length, "not equal length");
61    msg = Arrays.toString(full) + " is not same as " + Arrays.toString(sub) + ": " + msg;
62    check(Arrays.asList(full).containsAll(Arrays.asList(sub)), msg);
63  }
64
65  private static <T> void checkSubset(T[] full, T[] sub, String msg) {
66    msg = Arrays.toString(full) + " does not contain all of " + Arrays.toString(sub) + ": " + msg;
67    check(Arrays.asList(full).containsAll(Arrays.asList(sub)), msg);
68  }
69
70  public static void run() throws Exception {
71    initializeTest();
72    // Check a few random classes in BCP.
73    checkSubset(getClassloaderDescriptors(null),
74        new String[] { "Ljava/lang/String;", "Ljava/util/TreeSet;" },
75        "Missing entries for null classloader.");
76    // Make sure that null is the same as BootClassLoader
77    checkEq(getClassloaderDescriptors(null),
78        getClassloaderDescriptors(Object.class.getClassLoader()), "Object not in bcp!");
79    // Check the current class loader gets expected classes.
80    checkSubset(getClassloaderDescriptors(Test1946.class.getClassLoader()),
81        new String[] {
82          "Lart/Test1946;",
83          "Lart/Test1946$TMP1;",
84          "Lart/Test1946$TMP2;",
85          "Lart/Test1946$TMP3;"
86        },
87        "Missing entries for current class classloader.");
88    // Check that the result is exactly what we expect and includes classes that fail verification.
89    checkEq(getClassloaderDescriptors(makeClassLoaderFrom(TEST_CLASSES,
90            ClassLoader.getSystemClassLoader())),
91        new String[] { "LA;", "LB;", "LC;", "LD;", "LE;" },
92        "Unexpected classes in custom classloader");
93    checkEq(getClassloaderDescriptors(makeClassLoaderFrom(TEST_CLASSES,
94            Object.class.getClassLoader())),
95        new String[] { "LA;", "LB;", "LC;", "LD;", "LE;" },
96        "Unexpected classes in custom classloader");
97    checkEq(getClassloaderDescriptors(makeClassLoaderFrom(TEST_CLASSES,
98            Test1946.class.getClassLoader())),
99        new String[] { "LA;", "LB;", "LC;", "LD;", "LE;" },
100        "Unexpected classes in custom classloader");
101    // Check we only get 1 copy of each descriptor.
102    checkEq(getClassloaderDescriptors(makeClassLoaderFrom(Arrays.asList(TEST_CLASSES, TEST_CLASSES),
103            Test1946.class.getClassLoader())),
104        new String[] { "LA;", "LB;", "LC;", "LD;", "LE;" },
105        "Unexpected classes in custom classloader");
106    System.out.println("Passed!");
107  }
108
109  private static ClassLoader makeClassLoaderFrom(byte[] data, ClassLoader parent) throws Exception {
110    return new InMemoryDexClassLoader(ByteBuffer.wrap(data), parent);
111  }
112
113  private static ClassLoader makeClassLoaderFrom(List<byte[]> data, ClassLoader parent)
114      throws Exception {
115    ArrayList<ByteBuffer> bufs = new ArrayList<>();
116    for (byte[] d : data) {
117      bufs.add(ByteBuffer.wrap(d));
118    }
119    return new InMemoryDexClassLoader(bufs.toArray(new ByteBuffer[0]), parent);
120  }
121
122  private static native void initializeTest();
123  private static native String[] getClassloaderDescriptors(ClassLoader loader);
124}
125