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/*
* Copyright (c) 2019, 2020, 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.
*/
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.ObjectStreamClass;
import java.net.MalformedURLException;
import java.net.URI;
import java.net.URL;
import java.net.URLClassLoader;
import java.nio.file.Path;
import jdk.test.lib.compiler.CompilerUtils;
import org.testng.annotations.BeforeTest;
import static org.testng.Assert.*;
/**
* An abstract superclass for tests that require to serialize and deserialize
* record-like and record classes. Can be used for determining migration and
* interop between record-like and record classes.
*/
public class AbstractTest {
static final String TEST_SRC = System.getProperty("test.src", ".");
static final String TEST_CLASSES = System.getProperty("test.classes", ".");
static final Path TEST_CLASSES_DIR = Path.of(TEST_CLASSES);
static final Path PLAIN_SRC_DIR = Path.of(TEST_SRC, "plain");
static final Path PLAIN_DEST_DIR = Path.of("plain");
static final Path RECORD_SRC_DIR = Path.of(TEST_SRC, "record");
static final Path RECORD_DEST_DIR = Path.of("record");
@BeforeTest
public void setup() throws IOException {
assertTrue(CompilerUtils.compile(PLAIN_SRC_DIR, PLAIN_DEST_DIR,
"--class-path", TEST_CLASSES_DIR.toString()));
assertTrue(CompilerUtils.compile(RECORD_SRC_DIR, RECORD_DEST_DIR,
"--class-path", TEST_CLASSES_DIR.toString()));
}
static <T> byte[] serialize(T obj) throws IOException {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ObjectOutputStream oos = new ObjectOutputStream(baos);
oos.writeObject(obj);
oos.close();
return baos.toByteArray();
}
@SuppressWarnings("unchecked")
static <T> T deserializeAsPlain(byte[] streamBytes)
throws IOException, ClassNotFoundException
{
ByteArrayInputStream bais = new ByteArrayInputStream(streamBytes);
ObjectInputStream ois = new PlainObjectInputStream(bais);
return (T) ois.readObject();
}
@SuppressWarnings("unchecked")
static <T> T deserializeAsRecord(byte[] streamBytes)
throws IOException, ClassNotFoundException
{
ByteArrayInputStream bais = new ByteArrayInputStream(streamBytes);
ObjectInputStream ois = new RecordObjectInputStream(bais);
return (T) ois.readObject();
}
static Point newPlainPoint(int x, int y) throws Exception {
Class<?> c = Class.forName("PointImpl", true, plainLoader);
var point = (Point)c.getConstructor(int.class, int.class).newInstance(x, y);
assert !point.getClass().isRecord();
return point;
}
static DefaultValues newPlainDefaultValues(Point point) throws Exception {
Class<?> c = Class.forName("DefaultValuesImpl", true, plainLoader);
var defaultValues = (DefaultValues)c.getConstructor(Point.class).newInstance(point);
assert !defaultValues.getClass().isRecord();
return defaultValues;
}
static final ClassLoader plainLoader = plainLoader();
static final ClassLoader plainLoader() {
try {
return new URLClassLoader("plain-loader",
new URL[] { URI.create(PLAIN_DEST_DIR.toUri() + "/").toURL() },
AbstractTest.class.getClassLoader());
} catch(MalformedURLException e) {
throw new AssertionError(e);
}
}
static final ClassLoader recordLoader = recordLoader();
static final ClassLoader recordLoader() {
try {
return new URLClassLoader("record-loader",
new URL[] { URI.create(RECORD_DEST_DIR.toUri() + "/").toURL() },
AbstractTest.class.getClassLoader());
} catch(MalformedURLException e) {
throw new AssertionError(e);
}
}
static class PlainObjectInputStream extends ObjectInputStream {
PlainObjectInputStream(InputStream is) throws IOException {
super(is);
}
@Override
protected Class<?> resolveClass(ObjectStreamClass desc)
throws ClassNotFoundException
{
return Class.forName(desc.getName(), false, plainLoader);
}
}
/**
* An OIS implementation that delegates its class lookup to a loader
* that attempts to locate the class equivalent of the specified stream
* class description first in the test's record implementations.
*/
static class RecordObjectInputStream extends ObjectInputStream {
RecordObjectInputStream(InputStream is) throws IOException {
super(is);
}
@Override
protected Class<?> resolveClass(ObjectStreamClass desc)
throws ClassNotFoundException
{
return Class.forName(desc.getName(), false, recordLoader);
}
}
}
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