| /* |
| * Copyright (c) 1998, 2016, 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 4136620 4144590 |
| @summary Make sure that Attribute & subclasses are serialized and deserialized correctly |
| @modules java.desktop |
| */ |
| |
| import java.text.AttributedCharacterIterator.Attribute; |
| import java.awt.font.TextAttribute; |
| import java.io.*; |
| |
| public class ReadResolve { |
| |
| public static void main(String[] args) throws Exception { |
| testSerializationCycle(Attribute.LANGUAGE); |
| testSerializationCycle(TextAttribute.INPUT_METHOD_HIGHLIGHT); |
| |
| boolean gotException = false; |
| Attribute result = null; |
| try { |
| result = doSerializationCycle(FakeAttribute.LANGUAGE); |
| } catch (Throwable e) { |
| gotException = true; |
| } |
| if (!gotException) { |
| throw new RuntimeException("Attribute should throw an exception when given a fake \"language\" attribute. Deserialized object: " + result); |
| } |
| } |
| |
| static Attribute doSerializationCycle(Attribute attribute) throws Exception { |
| |
| ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| ObjectOutputStream oos = new ObjectOutputStream(baos); |
| oos.writeObject(attribute); |
| oos.flush(); |
| |
| byte[] data = baos.toByteArray(); |
| |
| ByteArrayInputStream bais = new ByteArrayInputStream(data); |
| ObjectInputStream ois = new ObjectInputStream(bais); |
| Attribute result = (Attribute) ois.readObject(); |
| |
| return result; |
| } |
| |
| static void testSerializationCycle(Attribute attribute) throws Exception { |
| Attribute result = doSerializationCycle(attribute); |
| if (result != attribute) { |
| throw new RuntimeException("attribute changed identity during serialization/deserialization"); |
| } |
| } |
| |
| private static class FakeAttribute extends Attribute { |
| |
| // This LANGUAGE attribute should never be confused with the |
| // Attribute.LANGUAGE attribute. However, we don't override |
| // readResolve here, so that deserialization goes |
| // to Attribute. Attribute has to catch this problem and reject |
| // the fake attribute. |
| static final FakeAttribute LANGUAGE = new FakeAttribute("language"); |
| |
| FakeAttribute(String name) { |
| super(name); |
| } |
| } |
| } |