94 lines
3.3 KiB
Java
94 lines
3.3 KiB
Java
/*
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* Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/* @test
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* @bug 4217676
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* @summary Ensure that object streams support serialization of long strings
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* (strings whose UTF representation > 64k in length)
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* @key randomness
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*/
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import java.io.*;
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import java.util.*;
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public class LongString {
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public static void main(String[] args) throws Exception {
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Random rand = new Random(System.currentTimeMillis());
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ByteArrayOutputStream bout;
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ByteArrayInputStream bin;
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ObjectOutputStream oout;
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ObjectInputStream oin;
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FileInputStream fin;
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File mesgf;
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// generate a long random string
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StringBuffer sbuf = new StringBuffer();
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for (int i = 0; i < 100000; i++)
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sbuf.append((char) rand.nextInt(Character.MAX_VALUE + 1));
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String str = sbuf.toString();
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// write and read long string
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bout = new ByteArrayOutputStream();
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oout = new ObjectOutputStream(bout);
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oout.writeObject(str);
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oout.flush();
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bin = new ByteArrayInputStream(bout.toByteArray());
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oin = new ObjectInputStream(bin);
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String strcopy = (String) oin.readObject();
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if (! str.equals(strcopy))
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throw new Error("deserialized long string not equal to original");
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// test backwards compatibility
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String mesg = "Message in golden file";
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bout = new ByteArrayOutputStream();
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oout = new ObjectOutputStream(bout);
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oout.writeObject(mesg);
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oout.flush();
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byte[] buf1 = bout.toByteArray();
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mesgf = new File(System.getProperty("test.src", "."), "mesg.ser");
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fin = new FileInputStream(mesgf);
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bout = new ByteArrayOutputStream();
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try {
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while (fin.available() > 0)
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bout.write(fin.read());
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} finally {
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fin.close();
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}
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byte[] buf2 = bout.toByteArray();
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if (! Arrays.equals(buf1, buf2))
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throw new Error("incompatible string format (write)");
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fin = new FileInputStream(mesgf);
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try {
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oin = new ObjectInputStream(fin);
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String mesgcopy = (String) oin.readObject();
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if (! mesg.equals(mesgcopy))
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throw new Error("incompatible string format (read)");
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} finally {
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fin.close();
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}
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}
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}
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