1 /* 2 * Copyright (C) 2008 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 libcore.java.util.zip; 18 19 import java.io.File; 20 import java.io.FilenameFilter; 21 import java.io.InputStream; 22 import java.security.cert.Certificate; 23 import java.util.Arrays; 24 import java.util.Enumeration; 25 import java.util.Random; 26 import java.util.jar.JarEntry; 27 import java.util.jar.JarFile; 28 import java.util.zip.Deflater; 29 import java.util.zip.Inflater; 30 import java.util.zip.ZipEntry; 31 import java.util.zip.ZipFile; 32 import junit.framework.TestCase; 33 34 public final class OldAndroidZipStressTest extends TestCase { 35 /** 36 * JarEntry.getCertificates() is really slow. http://b/1046174 37 */ 38 public void checkJarCertificates(File file) throws Exception { 39 JarFile jarFile = new JarFile(file); 40 JarEntry je = jarFile.getJarEntry("AndroidManifest.xml"); 41 byte[] readBuffer = new byte[1024]; 42 43 long t0 = System.currentTimeMillis(); 44 45 // We must read the stream for the JarEntry to retrieve its certificates. 46 InputStream is = jarFile.getInputStream(je); 47 while (is.read(readBuffer, 0, readBuffer.length) != -1) { 48 } 49 is.close(); 50 Certificate[] certs = je != null ? je.getCertificates() : null; 51 52 long t1 = System.currentTimeMillis(); 53 System.out.println("loadCertificates() took " + (t1 - t0) + " ms"); 54 if (certs == null) { 55 System.out.println("We have no certificates"); 56 } else { 57 System.out.println("We have " + certs.length + " certificates"); 58 } 59 } 60 61 private File[] getFiles() { 62 File[] result = new File("/system/app").listFiles(new FilenameFilter() { 63 public boolean accept(File dir, String name) { 64 return name.endsWith(".apk"); 65 } 66 }); 67 return result != null ? result : new File[0]; 68 } 69 70 public void testJarCertificates() throws Exception { 71 for (File file : getFiles()) { 72 checkJarCertificates(file); 73 } 74 } 75 76 // Boot-time package scan is slow. Not expected to fail. Please see log if 77 // you are interested in the results. http://b/1212257 78 public void testZipStressManifest() throws Exception { 79 long time0 = System.currentTimeMillis(); 80 byte[] buffer = new byte[512]; 81 for (File file : getFiles()) { 82 System.out.println("ZIP stress test processing " + file + "..."); 83 84 ZipFile zip = new ZipFile(file); 85 ZipEntry entry = zip.getEntry("AndroidManifest.xml"); 86 InputStream stream = zip.getInputStream(entry); 87 int j = stream.read(buffer); 88 while (j != -1) { 89 j = stream.read(buffer); 90 } 91 stream.close(); 92 } 93 long time1 = System.currentTimeMillis(); 94 System.out.println("ZIP stress test finished, time was " + (time1- time0) + "ms"); 95 } 96 97 public void testZipStressAllFiles() throws Exception { 98 long time0 = System.currentTimeMillis(); 99 byte[] buffer = new byte[512]; 100 for (File file : getFiles()) { 101 System.out.println("ZIP stress test processing " + file + "..."); 102 ZipFile zip = new ZipFile(file); 103 Enumeration<? extends ZipEntry> entries = zip.entries(); 104 while (entries.hasMoreElements()) { 105 InputStream stream = zip.getInputStream(entries.nextElement()); 106 int j = stream.read(buffer); 107 while (j != -1) { 108 j = stream.read(buffer); 109 } 110 stream.close(); 111 } 112 } 113 long time1 = System.currentTimeMillis(); 114 System.out.println("ZIP stress test finished, time was " + (time1- time0) + "ms"); 115 } 116 117 private void assertEquals(byte[] a, byte[] b) { 118 assertTrue(Arrays.equals(a, b)); 119 } 120 121 /** 122 * Native memory allocated by Deflater in system_server. The fix reduced 123 * some internal ZLIB buffers in size, so this test is trying to execute a 124 * lot of deflating to ensure that things are still working properly. 125 * http://b/1185084 126 */ 127 public void testZipDeflateInflateStress() throws Exception { 128 final int DATA_SIZE = 16384; 129 Random random = new Random(42); // Seed makes test reproducible 130 // Outer loop selects "mode" of test. 131 for (int j = 1; j <= 2; j++) { 132 byte[] input = new byte[DATA_SIZE]; 133 134 if (j == 1) { 135 // Totally random content 136 random.nextBytes(input); 137 } else { 138 // Random contents with longer repetitions 139 int pos = 0; 140 while (pos < input.length) { 141 byte what = (byte)random.nextInt(256); 142 int howMany = random.nextInt(32); 143 if (pos + howMany >= input.length) { 144 howMany = input.length - pos; 145 } 146 Arrays.fill(input, pos, pos + howMany, what); 147 pos += howMany; 148 } 149 } 150 151 // Inner loop tries all 9 compression levels. 152 for (int i = 1; i <= 9; i++) { 153 System.out.println("ZipDeflateInflateStress test (" + j + "," + i + ")..."); 154 byte[] zipped = new byte[2 * DATA_SIZE]; // Just to make sure... 155 156 Deflater deflater = new Deflater(i); 157 deflater.setInput(input); 158 deflater.finish(); 159 deflater.deflate(zipped); 160 deflater.end(); 161 162 byte[] output = new byte[DATA_SIZE]; 163 164 Inflater inflater = new Inflater(); 165 inflater.setInput(zipped); 166 inflater.finished(); 167 inflater.inflate(output); 168 inflater.end(); 169 assertEquals(input, output); 170 } 171 } 172 } 173 } 174
