1 /* 2 * Copyright (c) 2011 Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* 25 * Portions Copyright (c) 2011 IBM Corporation 26 */ 27 28 /* 29 * @test 30 * @bug 6312706 31 * @summary A serialized EnumMap can be successfully de-serialized. 32 * @author Neil Richards <neil.richards@ngmr.net>, <neil_richards@uk.ibm.com> 33 */ 34 35 import java.io.ByteArrayInputStream; 36 import java.io.ByteArrayOutputStream; 37 import java.io.IOException; 38 import java.io.ObjectInputStream; 39 import java.io.ObjectOutputStream; 40 import java.io.PrintWriter; 41 import java.io.StringWriter; 42 import java.util.EnumMap; 43 44 public class SimpleSerialization { 45 private enum TestEnum { e00, e01, e02, e03, e04, e05, e06, e07 } 46 public static void main(final String[] args) throws Exception { 47 final EnumMap<TestEnum, String> enumMap = new EnumMap<>(TestEnum.class); 48 49 enumMap.put(TestEnum.e01, TestEnum.e01.name()); 50 enumMap.put(TestEnum.e04, TestEnum.e04.name()); 51 enumMap.put(TestEnum.e05, TestEnum.e05.name()); 52 53 final ByteArrayOutputStream baos = new ByteArrayOutputStream(); 54 final ObjectOutputStream oos = new ObjectOutputStream(baos); 55 56 oos.writeObject(enumMap); 57 oos.close(); 58 59 final byte[] data = baos.toByteArray(); 60 final ByteArrayInputStream bais = new ByteArrayInputStream(data); 61 final ObjectInputStream ois = new ObjectInputStream(bais); 62 63 final Object deserializedObject = ois.readObject(); 64 ois.close(); 65 66 if (false == enumMap.equals(deserializedObject)) { 67 throw new RuntimeException(getFailureText(enumMap, deserializedObject)); 68 } 69 } 70 71 private static String getFailureText(final Object orig, final Object copy) { 72 final StringWriter sw = new StringWriter(); 73 final PrintWriter pw = new PrintWriter(sw); 74 75 pw.println("Test FAILED: Deserialized object is not equal to the original object"); 76 pw.print("\tOriginal: "); 77 printObject(pw, orig).println(); 78 pw.print("\tCopy: "); 79 printObject(pw, copy).println(); 80 81 pw.close(); 82 return sw.toString(); 83 } 84 85 private static PrintWriter printObject(final PrintWriter pw, final Object o) { 86 pw.printf("%s@%08x", o.getClass().getName(), System.identityHashCode(o)); 87 return pw; 88 } 89 }