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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  import java.io.ByteArrayInputStream;
28  import java.io.ByteArrayOutputStream;
29  import java.io.IOException;
30  import java.io.InputStream;
31  import java.io.ObjectInputStream;
32  import java.io.ObjectOutputStream;
33  import java.io.Serializable;
34  
35  import static org.junit.Assert.assertNotNull;
36  
37  import org.junit.Test;
38  import org.slf4j.Logger;
39  import org.slf4j.LoggerFactory;
40  
41  /**
42   * See http://jira.qos.ch/browse/SLF4J-252
43   * @author Thorbjorn Ravn Andersen
44   */
45  public class LoggerSerializationTest {
46  
47      static class LoggerHolder implements Serializable {
48          private static final long serialVersionUID = 1L;
49  
50          private final Logger log = LoggerFactory.getLogger(LoggerHolder.class);
51  
52          public String toString() {
53              return "log=" + getLog();
54          }
55  
56          public Logger getLog() {
57              return log;
58          }
59      }
60  
61      @Test
62      public void testCanLoggerBeSerialized() throws IOException, ClassNotFoundException {
63  
64          LoggerHolder lh1 = new LoggerHolder();
65  
66          ByteArrayOutputStream baos = new ByteArrayOutputStream();
67          ObjectOutputStream out = new ObjectOutputStream(baos);
68          out.writeObject(lh1);
69          out.close();
70  
71          lh1 = null;
72  
73          byte[] serializedLoggerHolder = baos.toByteArray();
74  
75          InputStream is = new ByteArrayInputStream(serializedLoggerHolder);
76          ObjectInputStream in = new ObjectInputStream(is);
77          LoggerHolder lh2 = (LoggerHolder) in.readObject();
78  
79          assertNotNull(lh2);
80          assertNotNull(lh2.getLog());
81          lh2.getLog().info("You must see this message as a log message");
82      }
83  
84  }