russell@unturf.com
0a580b313d
Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com Patches, unit tests, benchmarks, whitepaper, and outreach briefs. Public domain — no copyright claimed. Use freely.
76 lines
2.9 KiB
Java
76 lines
2.9 KiB
Java
/*
|
|
* Copyright (c) 2025, 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 8358624
|
|
* @summary Test ImmutableDescriptor hashcode and serialization
|
|
*
|
|
* @run main ImmutableDescriptorSerialHashCodeTest
|
|
*/
|
|
|
|
import java.io.ByteArrayInputStream;
|
|
import java.io.ByteArrayOutputStream;
|
|
import java.io.ObjectInputStream;
|
|
import java.io.ObjectOutputStream;
|
|
import javax.management.Descriptor;
|
|
import javax.management.ImmutableDescriptor;
|
|
|
|
public class ImmutableDescriptorSerialHashCodeTest {
|
|
public static void main(String[] args) throws Exception {
|
|
|
|
Descriptor d1 = new ImmutableDescriptor("a=aval", "B=Bval", "cC=cCval");
|
|
Descriptor d2 = new ImmutableDescriptor("a=aval", "B=Bval", "cC=cCval");
|
|
|
|
test (d1, d2, "Objects created from same String"); // Sanity check
|
|
Descriptor dSer = serialize(d1);
|
|
test(d1, dSer, "After serialization"); // Actual test
|
|
System.out.println("PASSED");
|
|
}
|
|
|
|
/**
|
|
* Test that two Descriptor objects are both equal, and have equal hashcodes.
|
|
*/
|
|
private static void test(Descriptor d1, Descriptor d2, String msg) throws Exception {
|
|
if (!d1.equals(d2)) {
|
|
throw new RuntimeException(msg + ": Descriptors not equal: " +
|
|
"\nd1: " + d1 +
|
|
"\nd2: " + d2);
|
|
}
|
|
if (d1.hashCode() != d2.hashCode()) {
|
|
throw new RuntimeException(msg + ": Hash code mismatch. hash1: " + d1.hashCode()
|
|
+ ", hash2: " + d2.hashCode());
|
|
}
|
|
}
|
|
|
|
private static <T> T serialize(T x) throws Exception {
|
|
ByteArrayOutputStream bout = new ByteArrayOutputStream();
|
|
ObjectOutputStream oout = new ObjectOutputStream(bout);
|
|
oout.writeObject(x);
|
|
oout.close();
|
|
byte[] bytes = bout.toByteArray();
|
|
ByteArrayInputStream bin = new ByteArrayInputStream(bytes);
|
|
ObjectInputStream oin = new ObjectInputStream(bin);
|
|
return (T) oin.readObject();
|
|
}
|
|
}
|