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A library jar that provides APIs for Applications written for the Google Android Platform.
/*
* Copyright (C) 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package androidx.multidex;
import androidx.multidex.ZipUtil.CentralDirectory;
import org.junit.Assert;
import org.junit.BeforeClass;
import org.junit.Test;
import java.io.EOFException;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.RandomAccessFile;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Map;
import java.util.zip.ZipEntry;
import java.util.zip.ZipException;
import java.util.zip.ZipFile;
/**
* Tests of ZipUtil class.
*
* The test assumes that ANDROID_BUILD_TOP environment variable is defined and point to the top of a
* built android tree. This is the case when the console used for running the tests is setup for
* android tree compilation.
*/
public class ZipUtilTest {
private static final File zipFile = new File(System.getenv("ANDROID_BUILD_TOP"),
"out/target/common/obj/JAVA_LIBRARIES/android-support-multidex_intermediates/javalib.jar");
@BeforeClass
public static void setupClass() throws ZipException, IOException {
// just verify the zip is valid
new ZipFile(zipFile).close();
}
@Test
public void testCrcDoNotCrash() throws IOException {
long crc =
ZipUtil.getZipCrc(zipFile);
System.out.println("crc is " + crc);
}
@Test
public void testCrcRange() throws IOException {
RandomAccessFile raf = new RandomAccessFile(zipFile, "r");
CentralDirectory dir = ZipUtil.findCentralDirectory(raf);
byte[] dirData = new byte[(int) dir.size];
int length = dirData.length;
int off = 0;
raf.seek(dir.offset);
while (length > 0) {
int read = raf.read(dirData, off, length);
if (length == -1) {
throw new EOFException();
}
length -= read;
off += read;
}
raf.close();
ByteBuffer buffer = ByteBuffer.wrap(dirData);
Map toCheck = new HashMap();
while (buffer.hasRemaining()) {
buffer = buffer.slice();
buffer.order(ByteOrder.LITTLE_ENDIAN);
ZipEntry entry = ZipEntryReader.readEntry(buffer);
toCheck.put(entry.getName(), entry);
}
ZipFile zip = new ZipFile(zipFile);
Assert.assertEquals(zip.size(), toCheck.size());
Enumeration ref = zip.entries();
while (ref.hasMoreElements()) {
ZipEntry refEntry = ref.nextElement();
ZipEntry checkEntry = toCheck.get(refEntry.getName());
Assert.assertNotNull(checkEntry);
Assert.assertEquals(refEntry.getName(), checkEntry.getName());
Assert.assertEquals(refEntry.getComment(), checkEntry.getComment());
Assert.assertEquals(refEntry.getTime(), checkEntry.getTime());
Assert.assertEquals(refEntry.getCrc(), checkEntry.getCrc());
Assert.assertEquals(refEntry.getCompressedSize(), checkEntry.getCompressedSize());
Assert.assertEquals(refEntry.getSize(), checkEntry.getSize());
Assert.assertEquals(refEntry.getMethod(), checkEntry.getMethod());
Assert.assertArrayEquals(refEntry.getExtra(), checkEntry.getExtra());
}
zip.close();
}
@Test
public void testCrcValue() throws IOException {
ZipFile zip = new ZipFile(zipFile);
Enumeration ref = zip.entries();
byte[] buffer = new byte[0x2000];
while (ref.hasMoreElements()) {
ZipEntry refEntry = ref.nextElement();
if (refEntry.getSize() > 0) {
File tmp = File.createTempFile("ZipUtilTest", ".fakezip");
InputStream in = zip.getInputStream(refEntry);
OutputStream out = new FileOutputStream(tmp);
int read = in.read(buffer);
while (read != -1) {
out.write(buffer, 0, read);
read = in.read(buffer);
}
in.close();
out.close();
RandomAccessFile raf = new RandomAccessFile(tmp, "r");
CentralDirectory dir = new CentralDirectory();
dir.offset = 0;
dir.size = raf.length();
long crc = ZipUtil.computeCrcOfCentralDir(raf, dir);
Assert.assertEquals(refEntry.getCrc(), crc);
raf.close();
tmp.delete();
}
}
zip.close();
}
@Test
public void testInvalidCrcValue() throws IOException {
ZipFile zip = new ZipFile(zipFile);
Enumeration ref = zip.entries();
byte[] buffer = new byte[0x2000];
while (ref.hasMoreElements()) {
ZipEntry refEntry = ref.nextElement();
if (refEntry.getSize() > 0) {
File tmp = File.createTempFile("ZipUtilTest", ".fakezip");
InputStream in = zip.getInputStream(refEntry);
OutputStream out = new FileOutputStream(tmp);
int read = in.read(buffer);
while (read != -1) {
out.write(buffer, 0, read);
read = in.read(buffer);
}
in.close();
out.close();
RandomAccessFile raf = new RandomAccessFile(tmp, "r");
CentralDirectory dir = new CentralDirectory();
dir.offset = 0;
dir.size = raf.length() - 1;
long crc = ZipUtil.computeCrcOfCentralDir(raf, dir);
Assert.assertNotEquals(refEntry.getCrc(), crc);
raf.close();
tmp.delete();
}
}
zip.close();
}
}