/*
* Copyright (c) 2012, 2013, 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. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* 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
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/*
* Copyright (c) 2011-2012, Stephen Colebourne & Michael Nascimento Santos
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* * Neither the name of JSR-310 nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package tck.java.time;
import static org.testng.Assert.assertEquals;
import static org.testng.Assert.assertSame;
import static org.testng.Assert.fail;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.ObjectStreamConstants;
import java.io.Serializable;
import java.lang.reflect.Field;
import java.util.Formatter;
/**
* Base test class.
*/
public abstract class AbstractTCKTest {
protected static boolean isIsoLeap(long year) {
if (year % 4 != 0) {
return false;
}
if (year % 100 == 0 && year % 400 != 0) {
return false;
}
return true;
}
protected static void assertSerializable(Object object) throws IOException, ClassNotFoundException {
assertEquals(object instanceof Serializable, true);
Object deserializedObject = writeThenRead(object);
assertEquals(deserializedObject, object);
}
protected static void assertSerializableSame(Object object) throws IOException, ClassNotFoundException {
assertEquals(object instanceof Serializable, true);
Object deserializedObject = writeThenRead(object);
assertSame(deserializedObject, object);
}
private static Object writeThenRead(Object object) throws IOException, ClassNotFoundException {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
try (ObjectOutputStream oos = new ObjectOutputStream(baos) ) {
oos.writeObject(object);
}
try (ObjectInputStream ois = new ObjectInputStream(new ByteArrayInputStream(baos.toByteArray()))) {
return ois.readObject();
}
}
protected static void assertSerializedBySer(Object object, byte[] expectedBytes, byte[]... matches) throws Exception {
String serClass = object.getClass().getPackage().getName() + ".Ser";
Class<?> serCls = Class.forName(serClass);
Field field = serCls.getDeclaredField("serialVersionUID");
field.setAccessible(true);
long serVer = (Long) field.get(null);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
try (ObjectOutputStream oos = new ObjectOutputStream(baos) ) {
oos.writeObject(object);
}
byte[] bytes = baos.toByteArray();
ByteArrayInputStream bais = new ByteArrayInputStream(bytes);
try (DataInputStream dis = new DataInputStream(bais)) {
assertEquals(dis.readShort(), ObjectStreamConstants.STREAM_MAGIC);
assertEquals(dis.readShort(), ObjectStreamConstants.STREAM_VERSION);
assertEquals(dis.readByte(), ObjectStreamConstants.TC_OBJECT);
assertEquals(dis.readByte(), ObjectStreamConstants.TC_CLASSDESC);
assertEquals(dis.readUTF(), serClass);
assertEquals(dis.readLong(), serVer);
assertEquals(dis.readByte(), ObjectStreamConstants.SC_EXTERNALIZABLE | ObjectStreamConstants.SC_BLOCK_DATA);
assertEquals(dis.readShort(), 0); // number of fields
assertEquals(dis.readByte(), ObjectStreamConstants.TC_ENDBLOCKDATA); // end of classdesc
assertEquals(dis.readByte(), ObjectStreamConstants.TC_NULL); // no superclasses
if (expectedBytes.length < 256) {
assertEquals(dis.readByte(), ObjectStreamConstants.TC_BLOCKDATA);
assertEquals(dis.readUnsignedByte(), expectedBytes.length, "blockdata length incorrect");
} else {
assertEquals(dis.readByte(), ObjectStreamConstants.TC_BLOCKDATALONG);
assertEquals(dis.readInt(), expectedBytes.length, "blockdatalong length incorrect");
}
byte[] input = new byte[expectedBytes.length];
dis.readFully(input);
assertEquals(input, expectedBytes);
if (matches.length > 0) {
for (byte[] match : matches) {
boolean matched = false;
while (matched == false) {
try {
dis.mark(1000);
byte[] possible = new byte[match.length];
dis.readFully(possible);
assertEquals(possible, match);
matched = true;
} catch (AssertionError ex) {
dis.reset();
dis.readByte(); // ignore
}
}
}
} else {
assertEquals(dis.readByte(), ObjectStreamConstants.TC_ENDBLOCKDATA); // end of blockdata
assertEquals(dis.read(), -1);
}
}
}
/**
* Verify the class cannot be deserialized from a handcoded stream.
* Fail if the deserialization does <em>not</em> throw an Exception.
* @param serClass the class to embed in the handcoded stream
* @throws Exception if an unexpected condition occurs
*/
protected static void assertNotSerializable(Class<?> serClass) throws Exception {
Field field = serClass.getDeclaredField("serialVersionUID");
field.setAccessible(true);
long serVer = (Long) field.get(null);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
try (DataOutputStream out = new DataOutputStream(baos)) {
out.writeShort(ObjectStreamConstants.STREAM_MAGIC);
out.writeShort(ObjectStreamConstants.STREAM_VERSION);
out.writeByte(ObjectStreamConstants.TC_OBJECT);
out.writeByte(ObjectStreamConstants.TC_CLASSDESC);
out.writeUTF(serClass.getName());
out.writeLong(serVer);
out.writeByte(ObjectStreamConstants.SC_SERIALIZABLE); // Flags ObjectStreamConstants
out.writeShort(0); // number of fields
out.writeByte(ObjectStreamConstants.TC_ENDBLOCKDATA);
out.writeByte(ObjectStreamConstants.TC_NULL); // no superclasses
}
byte[] bytes = baos.toByteArray();
try (ByteArrayInputStream bis = new ByteArrayInputStream(bytes);
ObjectInputStream in = new ObjectInputStream(bis)) {
Object o = in.readObject();
} catch (Exception ioe) {
// Expected exception
return;
}
fail("Class should not be deserializable " + serClass.getName());
}
/**
* Utility method to dump a byte array in a java syntax.
* @param bytes and array of bytes
* @return a string containing the bytes formatted in java syntax
*/
protected static String dumpSerialStream(byte[] bytes) {
StringBuilder sb = new StringBuilder(bytes.length * 5);
Formatter fmt = new Formatter(sb);
fmt.format(" byte[] bytes = {" );
final int linelen = 10;
for (int i = 0; i < bytes.length; i++) {
if (i % linelen == 0) {
fmt.format("%n ");
}
fmt.format(" %3d,", bytes[i] & 0xff);
if ((i % linelen) == (linelen-1) || i == bytes.length - 1) {
fmt.format(" /*");
int s = i / linelen * linelen;
int k = i % linelen;
for (int j = 0; j <= k && s + j < bytes.length; j++) {
fmt.format(" %c", bytes[s + j] & 0xff);
}
fmt.format(" */");
}
}
fmt.format("%n };%n");
return sb.toString();
}
}