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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 junit.framework.Assert;
36
37 import junit.framework.TestCase;
38 import org.slf4j.Logger;
39 import org.slf4j.LoggerFactory;
40
41
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43
44
45 public class LoggerSerializationTest extends TestCase {
46
47 static class LoggerHolder implements Serializable {
48 private static final long serialVersionUID = 1L;
49
50 private 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 public void testCanLoggerBeSerialized() throws IOException, ClassNotFoundException {
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63 LoggerHolder lh1 = new LoggerHolder();
64
65 ByteArrayOutputStream baos = new ByteArrayOutputStream();
66 ObjectOutputStream out = new ObjectOutputStream(baos);
67 out.writeObject(lh1);
68 out.close();
69
70 lh1 = null;
71
72 byte[] serializedLoggerHolder = baos.toByteArray();
73
74 InputStream is = new ByteArrayInputStream(serializedLoggerHolder);
75 ObjectInputStream in = new ObjectInputStream(is);
76 LoggerHolder lh2 = (LoggerHolder) in.readObject();
77
78 Assert.assertNotNull(lh2);
79 Assert.assertNotNull(lh2.getLog());
80 lh2.getLog().info("You must see this message as a log message");
81 }
82
83 }