/*
* Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test 4235519
* @author Eric Wang <yiming.wang@oracle.com>
* @summary tests java.util.Base64
*/
import java.io.BufferedReader;
import java.io.FileReader;
import java.nio.ByteBuffer;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.Base64;
import java.util.Base64.Decoder;
import java.util.Base64.Encoder;
import java.util.Objects;
import java.util.Random;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
public class TestBase64Golden {
public static void main(String[] args) throws Exception {
test0(Base64Type.BASIC, Base64.getEncoder(), Base64.getDecoder(),
"plain.txt", "baseEncode.txt");
test0(Base64Type.URLSAFE, Base64.getUrlEncoder(), Base64.getUrlDecoder(),
"plain.txt", "urlEncode.txt");
test0(Base64Type.MIME, Base64.getMimeEncoder(), Base64.getMimeDecoder(),
"plain.txt", "mimeEncode.txt");
test1();
test2();
}
public static void test0(Base64Type type, Encoder encoder, Decoder decoder,
String srcFile, String encodedFile) throws Exception {
String[] srcLns = Files.readAllLines(Paths.get(SRCDIR, srcFile), DEF_CHARSET)
.toArray(new String[0]);
String[] encodedLns = Files.readAllLines(Paths.get(SRCDIR, encodedFile),
DEF_CHARSET)
.toArray(new String[0]);
int lns = 0;
for (String srcStr : srcLns) {
String encodedStr = null;
if (type != Base64Type.MIME) {
encodedStr = encodedLns[lns++];
} else {
while (lns < encodedLns.length) {
String s = encodedLns[lns++];
if (s.length() == 0)
break;
if (encodedStr != null) {
encodedStr += DEFAULT_CRLF + s;
} else {
encodedStr = s;
}
}
if (encodedStr == null && srcStr.length() == 0) {
encodedStr = "";
}
}
System.out.printf("%n src[%d]: %s%n", srcStr.length(), srcStr);
System.out.printf("encoded[%d]: %s%n", encodedStr.length(), encodedStr);
byte[] srcArr = srcStr.getBytes(DEF_CHARSET);
byte[] encodedArr = encodedStr.getBytes(DEF_CHARSET);
ByteBuffer srcBuf = ByteBuffer.wrap(srcArr);
ByteBuffer encodedBuf = ByteBuffer.wrap(encodedArr);
byte[] resArr = new byte[encodedArr.length];
// test int encode(byte[], byte[])
int len = encoder.encode(srcArr, resArr);
assertEqual(len, encodedArr.length);
assertEqual(resArr, encodedArr);
// test byte[] encode(byte[])
resArr = encoder.encode(srcArr);
assertEqual(resArr, encodedArr);
// test ByteBuffer encode(ByteBuffer)
int limit = srcBuf.limit();
ByteBuffer resBuf = encoder.encode(srcBuf);
assertEqual(srcBuf.position(), limit);
assertEqual(srcBuf.limit(), limit);
assertEqual(resBuf, encodedBuf);
srcBuf.rewind(); // reset for next test
// test encode(ByteBuffer, ByteBuffer, bytesOut)
resBuf.clear();
len = encoder.encode(srcBuf, resBuf, 0);
assertEqual(len, encodedArr.length);
assertEqual(srcBuf.position(), limit);
assertEqual(srcBuf.limit(), limit);
assertEqual(resBuf.position(), len);
resBuf.flip();
assertEqual(resBuf, encodedBuf);
srcBuf.rewind();
// test encode(ByteBuffer, ByteBuffer, bytesOut)[direct]
ByteBuffer resBuf_d = ByteBuffer.allocateDirect(encodedArr.length);
len = encoder.encode(srcBuf, resBuf_d, 0);
assertEqual(len, encodedArr.length);
assertEqual(srcBuf.position(), limit);
assertEqual(srcBuf.limit(), limit);
assertEqual(resBuf_d.position(), len);
resBuf_d.flip();
assertEqual(resBuf_d, encodedBuf);
srcBuf.rewind();
// test String encodeToString(byte[])
String resEncodeStr = encoder.encodeToString(srcArr);
assertEqual(resEncodeStr, encodedStr);
// test int decode(byte[], byte[])
resArr = new byte[srcArr.length];
len = decoder.decode(encodedArr, resArr);
assertEqual(len, srcArr.length);
assertEqual(resArr, srcArr);
// test byte[] decode(byte[])
resArr = decoder.decode(encodedArr);
assertEqual(resArr, srcArr);
// test ByteBuffer decode(ByteBuffer)
limit = encodedBuf.limit();
resBuf = decoder.decode(encodedBuf);
assertEqual(encodedBuf.position(), limit);
assertEqual(encodedBuf.limit(), limit);
assertEqual(resBuf, srcBuf);
encodedBuf.rewind(); // reset for next test
// test int decode(ByteBuffer, ByteBuffer)
resBuf.clear();
len = decoder.decode(encodedBuf, resBuf);
assertEqual(len, srcArr.length);
assertEqual(encodedBuf.position(), limit);
assertEqual(encodedBuf.limit(), limit);
assertEqual(resBuf.position(), len);
resBuf.flip();
assertEqual(resBuf, srcBuf);
encodedBuf.rewind(); // reset for next test
// test int decode(ByteBuffer, ByteBuffer)[direct]
resBuf_d = ByteBuffer.allocateDirect(srcArr.length);
len = decoder.decode(encodedBuf, resBuf_d);
assertEqual(len, srcArr.length);
assertEqual(encodedBuf.position(), limit);
assertEqual(encodedBuf.limit(), limit);
assertEqual(resBuf_d.position(), len);
resBuf_d.flip();
assertEqual(resBuf_d, srcBuf);
encodedBuf.rewind(); // reset for next test
// test byte[] decode(String)
resArr = decoder.decode(encodedStr);
assertEqual(resArr, srcArr);
// test compatible with sun.misc.Base64Encoder
if (type == Base64Type.MIME) {
sun.misc.BASE64Encoder miscEncoder = new BASE64Encoder();
sun.misc.BASE64Decoder miscDecoder = new BASE64Decoder();
resArr = decoder.decode(miscEncoder.encode(srcArr));
assertEqual(resArr, srcArr);
resArr = encoder.encode(miscDecoder.decodeBuffer(encodedStr));
assertEqual(new String(resArr, DEF_CHARSET), encodedStr);
}
}
}
private static void test1() throws Exception {
byte[] src = new byte[6];
new Random().nextBytes(src);
ByteBuffer srcBuf = ByteBuffer.allocate(10);
srcBuf.position(2);
srcBuf.mark();
srcBuf.limit(8);
srcBuf.put(src);
srcBuf.reset();
ByteBuffer dstBuf = ByteBuffer.allocate((src.length + 2) / 3 * 4);
Base64.getEncoder().encode(srcBuf, dstBuf, 0);
dstBuf.rewind();
byte[] dst = new byte[dstBuf.limit()];
dstBuf.get(dst);
System.out.printf("%n src[%d]: %s%n", src.length, new String(src));
System.out.printf("encoded[%d]: %s%n", dst.length, new String(dst));
assertEqual(src, Base64.getDecoder().decode(dst));
dstBuf = ByteBuffer.allocateDirect((src.length + 2) / 3 * 4);
srcBuf.reset();
Base64.getEncoder().encode(srcBuf, dstBuf, 0);
dstBuf.rewind();
dst = new byte[dstBuf.limit()];
dstBuf.get(dst);
assertEqual(src, Base64.getDecoder().decode(dst));
}
private static void test2() throws Exception {
byte[] src = new byte[] {
46, -97, -35, -44, 127, -60, -39, -4, -112, 34, -57, 47, -14, 67,
40, 18, 90, -59, 68, 112, 23, 121, -91, 94, 35, 49, 104, 17, 30,
-80, -104, -3, -53, 27, 38, -72, -47, 113, -52, 18, 5, -126 };
Encoder encoder = Base64.getEncoder(49, new byte[] { 0x7e });
byte[] encoded = encoder.encode(src);
Decoder decoder = Base64.getMimeDecoder();
byte[] decoded = decoder.decode(encoded);
if (!Objects.deepEquals(src, decoded)) {
throw new RuntimeException();
}
}
// helper
enum Base64Type {
BASIC, URLSAFE, MIME
}
private static final String SRCDIR = System.getProperty("test.src", ".");
private static final Charset DEF_CHARSET = StandardCharsets.US_ASCII;
private static final String DEF_EXCEPTION_MSG =
"Assertion failed! The result is not same as expected";
private static final String DEFAULT_CRLF = "\r\n";
private static void assertEqual(Object result, Object expect) {
if (!Objects.deepEquals(result, expect)) {
String resultStr = result.toString();
String expectStr = expect.toString();
if (result instanceof byte[]) {
resultStr = new String((byte[]) result, DEF_CHARSET);
}
if (expect instanceof byte[]) {
expectStr = new String((byte[]) expect, DEF_CHARSET);
}
throw new RuntimeException(DEF_EXCEPTION_MSG +
" result: " + resultStr + " expected: " + expectStr);
}
}
}