LoggerSerializationTest xref

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    1   /**
    2    * Copyright (c) 2004-2011 QOS.ch
    3    * All rights reserved.
    4    *
    5    * Permission is hereby granted, free  of charge, to any person obtaining
    6    * a  copy  of this  software  and  associated  documentation files  (the
    7    * "Software"), to  deal in  the Software without  restriction, including
    8    * without limitation  the rights to  use, copy, modify,  merge, publish,
    9    * distribute,  sublicense, and/or sell  copies of  the Software,  and to
    10   * permit persons to whom the Software  is furnished to do so, subject to
    11   * the following conditions:
    12   *
    13   * The  above  copyright  notice  and  this permission  notice  shall  be
    14   * included in all copies or substantial portions of the Software.
    15   *
    16   * THE  SOFTWARE IS  PROVIDED  "AS  IS", WITHOUT  WARRANTY  OF ANY  KIND,
    17   * EXPRESS OR  IMPLIED, INCLUDING  BUT NOT LIMITED  TO THE  WARRANTIES OF
    18   * MERCHANTABILITY,    FITNESS    FOR    A   PARTICULAR    PURPOSE    AND
    19   * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
    20   * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
    21   * OF CONTRACT, TORT OR OTHERWISE,  ARISING FROM, OUT OF OR IN CONNECTION
    22   * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
    23   *
    24   */
    25  package org.slf4j.issue;
    26
    27
    28  import java.io.ByteArrayInputStream;
    29  import java.io.ByteArrayOutputStream;
    30  import java.io.IOException;
    31  import java.io.InputStream;
    32  import java.io.ObjectInputStream;
    33  import java.io.ObjectOutputStream;
    34  import java.io.Serializable;
    35
    36  import junit.framework.Assert;
    37
    38  import junit.framework.TestCase;
    39  import org.slf4j.Logger;
    40  import org.slf4j.LoggerFactory;
    41
    42  /**
    43   * See http://bugzilla.slf4j.org/show_bug.cgi?id=261
    44   * @author Thorbjorn Ravn Andersen
    45   */
    46  public class LoggerSerializationTest extends TestCase {
    47
    48    static class LoggerHolder implements Serializable {
    49   		private static final long serialVersionUID = 1L;
    50
    51   		private Logger log = LoggerFactory.getLogger(LoggerHolder.class);
    52
    53   		public String toString() {
    54   			return "log=" + getLog();
    55   		}
    56
    57   		public Logger getLog() {
    58   			return log;
    59   		}
    60   	}
    61
    62   	public void testCanLoggerBeSerialized() throws IOException,
    63   			ClassNotFoundException {
    64
    65   		LoggerHolder lh1 = new LoggerHolder();
    66
    67   		ByteArrayOutputStream baos = new ByteArrayOutputStream();
    68   		ObjectOutputStream out = new ObjectOutputStream(baos);
    69   		out.writeObject(lh1);
    70   		out.close();
    71
    72   		lh1 = null;
    73
    74   		byte[] serializedLoggerHolder = baos.toByteArray();
    75
    76   		InputStream is = new ByteArrayInputStream(serializedLoggerHolder);
    77   		ObjectInputStream in = new ObjectInputStream(is);
    78   		LoggerHolder lh2 = (LoggerHolder) in.readObject();
    79
    80   		Assert.assertNotNull(lh2);
    81   		Assert.assertNotNull(lh2.getLog());
    82   		lh2.getLog().info("You must see this message as a log message");
    83   	}
    84
    85  }