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25 package org.slf4j;
26
27 import java.io.PrintStream;
28 import java.util.Random;
29
30 import junit.framework.TestCase;
31
32 public class VersionMismatchAssertionTest extends TestCase {
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34 StringPrintStream sps = new StringPrintStream(System.err);
35 PrintStream old = System.err;
36 int diff = 1024 + new Random().nextInt(10000);
37
38 public VersionMismatchAssertionTest(String name) {
39 super(name);
40 }
41
42 protected void setUp() throws Exception {
43 super.setUp();
44 System.setErr(sps);
45 }
46
47 protected void tearDown() throws Exception {
48 super.tearDown();
49 System.setErr(old);
50 }
51
52 public void test() throws Exception {
53 Logger logger = LoggerFactory.getLogger(this.getClass());
54 String msg = "hello world " + diff;
55 logger.info(msg);
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57 String s0 = (String) sps.stringList.get(0);
58 assertTrue(s0.matches("SLF4J: The requested version .* by your slf4j binding is not compatible with.*"));
59
60 String s1 = (String) sps.stringList.get(1);
61 assertTrue(s1.contains(LoggerFactory.VERSION_MISMATCH));
62
63 String s2 = (String) sps.stringList.get(2);
64 assertTrue(s2.contains(msg));
65
66 }
67 }