1   package org.slf4j;
2   
3   import java.io.PrintStream;
4   import java.util.Random;
5   
6   import junit.framework.TestCase;
7   
8   public class VersionMatchTest extends TestCase {
9   
10    
11    StringPrintStream sps = new StringPrintStream(System.err);
12    PrintStream old = System.err;
13    int diff = 1024 + new Random().nextInt(10000);
14    
15    public VersionMatchTest(String name) {
16      super(name);
17    }
18  
19    protected void setUp() throws Exception {
20      super.setUp();
21      System.setErr(sps);
22    }
23  
24    protected void tearDown() throws Exception {
25      super.tearDown();
26      System.setErr(old);
27    }
28  
29    
30    public void test() throws Exception  {
31      Logger logger = LoggerFactory.getLogger(this.getClass());
32      String msg = "hello world "+diff;
33      logger.info(msg);
34      assertEquals(1, sps.stringList.size());
35      String s0 = (String) sps.stringList.get(0);
36      assertTrue(s0.contains(msg));
37    }
38  }