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// Copyright 2015 Google Inc. All rights reserved.
//
// 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 com.google.devtools.build.android.ziputils;
import static com.google.devtools.build.android.ziputils.DataDescriptor.EXTCRC;
import static com.google.devtools.build.android.ziputils.DataDescriptor.EXTLEN;
import static com.google.devtools.build.android.ziputils.DataDescriptor.EXTSIG;
import static com.google.devtools.build.android.ziputils.DataDescriptor.EXTSIZ;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.util.zip.ZipInputStream;
/**
* Unit tests for {@link DataDescriptor}.
*/
@RunWith(JUnit4.class)
public class DataDescriptorTest {
/**
* Test of viewOf method, of class DataDescriptor.
*/
@Test
public void testViewOf() {
int[] markers = { 12345678, DataDescriptor.SIGNATURE, 0};
for (int marker : markers) {
ByteBuffer buffer = ByteBuffer.allocate(50).order(ByteOrder.LITTLE_ENDIAN);
for (int i = 0; i < 50; i++) {
buffer.put((byte) i);
}
int offset = 20;
buffer.putInt(offset, marker);
buffer.position(offset);
DataDescriptor view = DataDescriptor.viewOf(buffer);
int expMark = marker == DataDescriptor.SIGNATURE ? (int) ZipInputStream.EXTSIG : -1;
int expSize = marker == DataDescriptor.SIGNATURE ? ZipInputStream.EXTHDR
: ZipInputStream.EXTHDR - 4;
int expPos = 0;
assertEquals("not based at current position[" + marker + "]", expMark, view.get(EXTSIG));
assertEquals("Not slice with position 0[" + marker + "]", expPos, view.buffer.position());
assertEquals("Not sized with comment[" + marker + "]", expSize, view.getSize());
assertEquals("Not limited to size[" + marker + "]", expSize, view.buffer.limit());
}
}
/**
* Test of view method, of class DataDescriptor.
*/
@Test
public void testView_0args() {
DataDescriptor view = DataDescriptor.allocate();
int expSize = ZipInputStream.EXTHDR;
int expPos = 0;
int expMarker = (int) ZipInputStream.EXTSIG;
assertTrue("no marker", view.hasMarker());
assertEquals("No marker", expMarker, view.get(EXTSIG));
assertEquals("Not at position 0", expPos, view.buffer.position());
assertEquals("Not sized correctly", expSize, view.getSize());
assertEquals("Not limited to size", expSize, view.buffer.limit());
}
/**
* Test of view method, of class DataDescriptor.
*/
@Test
public void testView_ByteBuffer() {
ByteBuffer buffer = ByteBuffer.allocate(100).order(ByteOrder.LITTLE_ENDIAN);
for (int i = 0; i < 100; i++) {
buffer.put((byte) i);
}
buffer.position(50);
DataDescriptor view = DataDescriptor.view(buffer);
int expMark = (int) ZipInputStream.EXTSIG;
int expSize = ZipInputStream.EXTHDR;
int expPos = 0;
assertEquals("not based at current position", expMark, view.get(EXTSIG));
assertEquals("Not slice with position 0", expPos, view.buffer.position());
assertEquals("Not sized with comment", expSize, view.getSize());
assertEquals("Not limited to size", expSize, view.buffer.limit());
}
/**
* Test of copy method, of class DataDescriptor.
*/
@Test
public void testCopy() {
ByteBuffer buffer = ByteBuffer.allocate(100).order(ByteOrder.LITTLE_ENDIAN);
DataDescriptor view = DataDescriptor.allocate();
view.copy(buffer);
int expSize = view.getSize();
assertEquals("buffer not advanced as expected", expSize, buffer.position());
buffer.position(0);
DataDescriptor clone = DataDescriptor.viewOf(buffer);
assertEquals("Fail to copy mark", view.get(EXTSIG), clone.get(EXTSIG));
}
/**
* Test of with and get methods.
*/
@Test
public void testWithAndGetMethods() {
int crc = 0x12345678;
int compressed = 0x357f1d5;
int uncompressed = 0x74813159;
DataDescriptor view = DataDescriptor.allocate()
.set(EXTCRC, crc)
.set(EXTSIZ, compressed)
.set(EXTLEN, uncompressed);
assertEquals("CRC", crc, view.get(EXTCRC));
assertEquals("Compressed size", compressed, view.get(EXTSIZ));
assertEquals("Uncompressed size", uncompressed, view.get(EXTLEN));
}
}
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