/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.harmony.tests.java.util.zip;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PipedInputStream;
import java.io.PipedOutputStream;
import java.util.zip.Checksum;
import java.util.zip.GZIPInputStream;
import java.util.zip.GZIPOutputStream;
public class GZIPOutputStreamTest extends junit.framework.TestCase {
class TestGZIPOutputStream extends GZIPOutputStream {
TestGZIPOutputStream(OutputStream out) throws IOException {
super(out);
}
TestGZIPOutputStream(OutputStream out, int size) throws IOException {
super(out, size);
}
Checksum getChecksum() {
return crc;
}
}
/**
* java.util.zip.GZIPOutputStream#GZIPOutputStream(java.io.OutputStream)
*/
public void test_ConstructorLjava_io_OutputStream() {
try {
FileOutputStream outFile = new FileOutputStream(
File.createTempFile("GZIPCon", ".txt"));
TestGZIPOutputStream outGZIP = new TestGZIPOutputStream(outFile);
assertNotNull("the constructor for GZIPOutputStream is null",
outGZIP);
assertEquals("the CRC value of the outputStream is not zero", 0, outGZIP
.getChecksum().getValue());
outGZIP.close();
} catch (IOException e) {
fail(
"an IO error occured while trying to find the output file or creating GZIP constructor");
}
}
/**
* java.util.zip.GZIPOutputStream#GZIPOutputStream(java.io.OutputStream,
*int)
*/
public void test_ConstructorLjava_io_OutputStreamI() {
try {
FileOutputStream outFile = new FileOutputStream(
File.createTempFile("GZIPOutCon", ".txt"));
TestGZIPOutputStream outGZIP = new TestGZIPOutputStream(outFile,
100);
assertNotNull("the constructor for GZIPOutputStream is null",
outGZIP);
assertEquals("the CRC value of the outputStream is not zero", 0, outGZIP
.getChecksum().getValue());
outGZIP.close();
} catch (IOException e) {
fail(
"an IO error occured while trying to find the output file or creating GZIP constructor");
}
}
/**
* java.util.zip.GZIPOutputStream#finish()
*/
public void test_finish() {
// test method java.util.zip.GZIPOutputStream.finish()
byte byteArray[] = { 3, 5, 2, 'r', 'g', 'e', 'f', 'd', 'e', 'w' };
try {
FileOutputStream outFile = new FileOutputStream(
File.createTempFile("GZIPOutFinish", ".txt"));
TestGZIPOutputStream outGZIP = new TestGZIPOutputStream(outFile);
outGZIP.finish();
int r = 0;
try {
outGZIP.write(byteArray, 0, 1);
} catch (IOException e) {
r = 1;
}
assertEquals("GZIP instance can still be used after finish is called",
1, r);
outGZIP.close();
} catch (IOException e) {
fail(
"an IO error occured while trying to find the output file or creating GZIP constructor");
}
}
/**
* java.util.zip.GZIPOutputStream#close()
*/
public void test_close() {
// test method java.util.zip.GZIPOutputStream.close()
byte byteArray[] = { 3, 5, 2, 'r', 'g', 'e', 'f', 'd', 'e', 'w' };
try {
FileOutputStream outFile = new FileOutputStream(
File.createTempFile("GZIPOutClose2", ".txt"));
TestGZIPOutputStream outGZIP = new TestGZIPOutputStream(outFile);
outGZIP.close();
int r = 0;
try {
outGZIP.write(byteArray, 0, 1);
} catch (IOException e) {
r = 1;
}
assertEquals("GZIP instance can still be used after close is called",
1, r);
} catch (IOException e) {
fail(
"an IO error occured while trying to find the output file or creating GZIP constructor");
}
}
/**
* java.util.zip.GZIPOutputStream#write(byte[], int, int)
*/
public void test_write$BII() {
// test method java.util.zip.GZIPOutputStream.writeBII
byte byteArray[] = { 3, 5, 2, 'r', 'g', 'e', 'f', 'd', 'e', 'w' };
try {
FileOutputStream outFile = new FileOutputStream(
File.createTempFile("GZIPOutWrite", ".txt"));
TestGZIPOutputStream outGZIP = new TestGZIPOutputStream(outFile);
outGZIP.write(byteArray, 0, 10);
// ran JDK and found this CRC32 value is 3097700292
// System.out.print(outGZIP.getChecksum().getValue());
assertEquals("the checksum value was incorrect result of write from GZIP",
3097700292L, outGZIP.getChecksum().getValue());
// test for boundary check
int r = 0;
try {
outGZIP.write(byteArray, 0, 11);
} catch (IndexOutOfBoundsException e) {
r = 1;
}
assertEquals("out of bounds exception is not present", 1, r);
outGZIP.close();
} catch (IOException e) {
fail(
"an IO error occured while trying to find the output file or creating GZIP constructor");
}
}
public void testSyncFlush() throws IOException {
PipedOutputStream pout = new PipedOutputStream();
PipedInputStream pin = new PipedInputStream(pout);
GZIPOutputStream out = new GZIPOutputStream(pout, true /* syncFlush */);
GZIPInputStream in = new GZIPInputStream(pin);
out.write(1);
out.write(2);
out.write(3);
out.flush();
// flush() is guaranteed to flush data only if syncFlush is true.
// The default flush param is NO_FLUSH so it's up to the deflater to
// decide how much input it wants to read before generating a compressed
// block.
assertEquals(1, in.read());
assertEquals(2, in.read());
assertEquals(3, in.read());
}
}