| /* |
| * Copyright (c) 1999, 2010, 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 4217676 |
| * @summary Ensure that object streams support serialization of long strings |
| * (strings whose UTF representation > 64k in length) |
| * @key randomness |
| */ |
| |
| import java.io.*; |
| import java.util.*; |
| |
| public class LongString { |
| public static void main(String[] args) throws Exception { |
| Random rand = new Random(System.currentTimeMillis()); |
| ByteArrayOutputStream bout; |
| ByteArrayInputStream bin; |
| ObjectOutputStream oout; |
| ObjectInputStream oin; |
| FileInputStream fin; |
| File mesgf; |
| |
| // generate a long random string |
| StringBuffer sbuf = new StringBuffer(); |
| for (int i = 0; i < 100000; i++) |
| sbuf.append((char) rand.nextInt(Character.MAX_VALUE + 1)); |
| String str = sbuf.toString(); |
| |
| // write and read long string |
| bout = new ByteArrayOutputStream(); |
| oout = new ObjectOutputStream(bout); |
| oout.writeObject(str); |
| oout.flush(); |
| bin = new ByteArrayInputStream(bout.toByteArray()); |
| oin = new ObjectInputStream(bin); |
| String strcopy = (String) oin.readObject(); |
| if (! str.equals(strcopy)) |
| throw new Error("deserialized long string not equal to original"); |
| |
| // test backwards compatibility |
| String mesg = "Message in golden file"; |
| bout = new ByteArrayOutputStream(); |
| oout = new ObjectOutputStream(bout); |
| oout.writeObject(mesg); |
| oout.flush(); |
| byte[] buf1 = bout.toByteArray(); |
| |
| mesgf = new File(System.getProperty("test.src", "."), "mesg.ser"); |
| fin = new FileInputStream(mesgf); |
| bout = new ByteArrayOutputStream(); |
| try { |
| while (fin.available() > 0) |
| bout.write(fin.read()); |
| } finally { |
| fin.close(); |
| } |
| byte[] buf2 = bout.toByteArray(); |
| |
| if (! Arrays.equals(buf1, buf2)) |
| throw new Error("incompatible string format (write)"); |
| |
| fin = new FileInputStream(mesgf); |
| try { |
| oin = new ObjectInputStream(fin); |
| String mesgcopy = (String) oin.readObject(); |
| if (! mesg.equals(mesgcopy)) |
| throw new Error("incompatible string format (read)"); |
| } finally { |
| fin.close(); |
| } |
| } |
| } |