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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;
26  
27  import java.io.PrintStream;
28  import java.util.Random;
29  
30  import junit.framework.TestCase;
31  
32  public class MissingSingletonMethodAssertionTest extends TestCase {
33  
34      StringPrintStream sps = new StringPrintStream(System.err);
35      PrintStream old = System.err;
36      int diff = 1024 + new Random().nextInt(10000);
37  
38      public MissingSingletonMethodAssertionTest(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          try {
54              Logger logger = LoggerFactory.getLogger(this.getClass());
55              String msg = "hello world " + diff;
56              logger.info(msg);
57              fail("NoSuchMethodError expected");
58          } catch (NoSuchMethodError e) {
59          }
60  
61          int lineCount = sps.stringList.size();
62          assertTrue("number of lines should be 3 but was " + lineCount, lineCount == 3);
63  
64          // expected output:
65          // SLF4J: slf4j-api 1.6.x (or later) is incompatible with this binding.
66          // SLF4J: Your binding is version 1.4.x or earlier.
67          // SLF4J: Upgrade your binding to version 1.6.x. or 2.0.x
68  
69          {
70              String s = (String) sps.stringList.get(0);
71              assertTrue(s.contains("SLF4J: slf4j-api 1.6.x (or later) is incompatible with this binding."));
72          }
73          {
74              String s = (String) sps.stringList.get(1);
75              assertTrue(s.contains("SLF4J: Your binding is version 1.5.5 or earlier."));
76          }
77          {
78              String s = (String) sps.stringList.get(2);
79              assertTrue(s.contains("SLF4J: Upgrade your binding to version 1.6.x."));
80          }
81  
82      }
83  }