001/**
002 * Copyright (c) 2004-2011 QOS.ch
003 * All rights reserved.
004 *
005 * Permission is hereby granted, free  of charge, to any person obtaining
006 * a  copy  of this  software  and  associated  documentation files  (the
007 * "Software"), to  deal in  the Software without  restriction, including
008 * without limitation  the rights to  use, copy, modify,  merge, publish,
009 * distribute,  sublicense, and/or sell  copies of  the Software,  and to
010 * permit persons to whom the Software  is furnished to do so, subject to
011 * the following conditions:
012 *
013 * The  above  copyright  notice  and  this permission  notice  shall  be
014 * included in all copies or substantial portions of the Software.
015 *
016 * THE  SOFTWARE IS  PROVIDED  "AS  IS", WITHOUT  WARRANTY  OF ANY  KIND,
017 * EXPRESS OR  IMPLIED, INCLUDING  BUT NOT LIMITED  TO THE  WARRANTIES OF
018 * MERCHANTABILITY,    FITNESS    FOR    A   PARTICULAR    PURPOSE    AND
019 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
020 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
021 * OF CONTRACT, TORT OR OTHERWISE,  ARISING FROM, OUT OF OR IN CONNECTION
022 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
023 *
024 */
025package org.slf4j.issue;
026
027import java.io.ByteArrayInputStream;
028import java.io.ByteArrayOutputStream;
029import java.io.IOException;
030import java.io.InputStream;
031import java.io.ObjectInputStream;
032import java.io.ObjectOutputStream;
033import java.io.Serializable;
034
035import static org.junit.Assert.assertNotNull;
036
037import org.junit.Test;
038import org.slf4j.Logger;
039import org.slf4j.LoggerFactory;
040
041/**
042 * See http://jira.qos.ch/browse/SLF4J-252
043 * @author Thorbjorn Ravn Andersen
044 */
045public class LoggerSerializationTest {
046
047    static class LoggerHolder implements Serializable {
048        private static final long serialVersionUID = 1L;
049
050        private final Logger log = LoggerFactory.getLogger(LoggerHolder.class);
051
052        public String toString() {
053            return "log=" + getLog();
054        }
055
056        public Logger getLog() {
057            return log;
058        }
059    }
060
061    @Test
062    public void testCanLoggerBeSerialized() throws IOException, ClassNotFoundException {
063
064        LoggerHolder lh1 = new LoggerHolder();
065
066        ByteArrayOutputStream baos = new ByteArrayOutputStream();
067        ObjectOutputStream out = new ObjectOutputStream(baos);
068        out.writeObject(lh1);
069        out.close();
070
071        lh1 = null;
072
073        byte[] serializedLoggerHolder = baos.toByteArray();
074
075        InputStream is = new ByteArrayInputStream(serializedLoggerHolder);
076        ObjectInputStream in = new ObjectInputStream(is);
077        LoggerHolder lh2 = (LoggerHolder) in.readObject();
078
079        assertNotNull(lh2);
080        assertNotNull(lh2.getLog());
081        lh2.getLog().info("You must see this message as a log message");
082    }
083
084}