J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1999 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 21 | * have any questions. |
| 22 | */ |
| 23 | |
| 24 | /* @test |
| 25 | * @bug 4217676 |
| 26 | * @summary Ensure that object streams support serialization of long strings |
| 27 | * (strings whose UTF representation > 64k in length) |
| 28 | */ |
| 29 | |
| 30 | import java.io.*; |
| 31 | import java.util.*; |
| 32 | |
| 33 | public class LongString { |
| 34 | public static void main(String[] args) throws Exception { |
| 35 | Random rand = new Random(System.currentTimeMillis()); |
| 36 | ByteArrayOutputStream bout; |
| 37 | ByteArrayInputStream bin; |
| 38 | ObjectOutputStream oout; |
| 39 | ObjectInputStream oin; |
| 40 | FileInputStream fin; |
| 41 | File mesgf; |
| 42 | |
| 43 | // generate a long random string |
| 44 | StringBuffer sbuf = new StringBuffer(); |
| 45 | for (int i = 0; i < 100000; i++) |
| 46 | sbuf.append((char) rand.nextInt(Character.MAX_VALUE + 1)); |
| 47 | String str = sbuf.toString(); |
| 48 | |
| 49 | // write and read long string |
| 50 | bout = new ByteArrayOutputStream(); |
| 51 | oout = new ObjectOutputStream(bout); |
| 52 | oout.writeObject(str); |
| 53 | oout.flush(); |
| 54 | bin = new ByteArrayInputStream(bout.toByteArray()); |
| 55 | oin = new ObjectInputStream(bin); |
| 56 | String strcopy = (String) oin.readObject(); |
| 57 | if (! str.equals(strcopy)) |
| 58 | throw new Error("deserialized long string not equal to original"); |
| 59 | |
| 60 | // test backwards compatibility |
| 61 | String mesg = "Message in golden file"; |
| 62 | bout = new ByteArrayOutputStream(); |
| 63 | oout = new ObjectOutputStream(bout); |
| 64 | oout.writeObject(mesg); |
| 65 | oout.flush(); |
| 66 | byte[] buf1 = bout.toByteArray(); |
| 67 | |
| 68 | mesgf = new File(System.getProperty("test.src", "."), "mesg.ser"); |
| 69 | fin = new FileInputStream(mesgf); |
| 70 | bout = new ByteArrayOutputStream(); |
| 71 | while (fin.available() > 0) |
| 72 | bout.write(fin.read()); |
| 73 | byte[] buf2 = bout.toByteArray(); |
| 74 | |
| 75 | if (! Arrays.equals(buf1, buf2)) |
| 76 | throw new Error("incompatible string format (write)"); |
| 77 | |
| 78 | fin = new FileInputStream(mesgf); |
| 79 | oin = new ObjectInputStream(fin); |
| 80 | String mesgcopy = (String) oin.readObject(); |
| 81 | if (! mesg.equals(mesgcopy)) |
| 82 | throw new Error("incompatible string format (read)"); |
| 83 | } |
| 84 | } |