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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.
*/
/*
* @test
* @bug 8246774
* @summary Ensures that the serialization implementation can *always* access
* the record constructor
* @run testng ConstructorAccessTest
* @run testng/othervm/java.security.policy=empty_security.policy ConstructorAccessTest
*/
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectInputStream;
import java.io.ObjectOutput;
import java.io.ObjectOutputStream;
import java.io.Externalizable;
import java.io.Serializable;
import org.testng.annotations.DataProvider;
import org.testng.annotations.Test;
import static java.lang.System.out;
import static org.testng.Assert.assertEquals;
import static org.testng.Assert.fail;
/*implicit*/ record Aux1 (int x) implements Serializable { }
/*implicit*/ record Aux2 (int x) implements Serializable { }
public class ConstructorAccessTest {
public record A (int x) implements Serializable { }
protected static record B (long l) implements Serializable { }
/*implicit*/ static record C (float f) implements Serializable { }
private record D (double d) implements Serializable { }
interface ThrowingExternalizable extends Externalizable {
default void writeExternal(ObjectOutput out) {
fail("should not reach here");
}
default void readExternal(ObjectInput in) {
fail("should not reach here");
}
}
public record E (short s) implements ThrowingExternalizable { }
protected static record F (long l) implements ThrowingExternalizable { }
/*implicit*/ static record G (double d) implements ThrowingExternalizable { }
private record H (double d) implements ThrowingExternalizable { }
@DataProvider(name = "recordInstances")
public Object[][] recordInstances() {
return new Object[][] {
new Object[] { new A(34) },
new Object[] { new B(44L) },
new Object[] { new C(4.5f) },
new Object[] { new D(440d) },
new Object[] { new E((short)12) },
new Object[] { new F(45L) },
new Object[] { new G(0.4d) },
new Object[] { new H(440d) },
new Object[] { new Aux1(63) },
new Object[] { new Aux2(64) },
};
}
@Test(dataProvider = "recordInstances")
public void roundTrip(Object objToSerialize) throws Exception {
out.println("\n---");
out.println("serializing : " + objToSerialize);
var objDeserialized = serializeDeserialize(objToSerialize);
out.println("deserialized: " + objDeserialized);
assertEquals(objToSerialize, objDeserialized);
assertEquals(objDeserialized, objToSerialize);
}
// ---
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 deserialize(byte[] streamBytes)
throws IOException, ClassNotFoundException
{
ByteArrayInputStream bais = new ByteArrayInputStream(streamBytes);
ObjectInputStream ois = new ObjectInputStream(bais);
return (T) ois.readObject();
}
static <T> T serializeDeserialize(T obj)
throws IOException, ClassNotFoundException
{
return deserialize(serialize(obj));
}
}
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