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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 static org.junit.Assert.assertNotNull;
36
37 import org.junit.Test;
38 import org.slf4j.Logger;
39 import org.slf4j.LoggerFactory;
40
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43
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 {
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64 LoggerHolder lh1 = new LoggerHolder();
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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 }