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 
MissingSingletonMethodAssertionTest(String name)38     public MissingSingletonMethodAssertionTest(String name) {
39         super(name);
40     }
41 
setUp()42     protected void setUp() throws Exception {
43         super.setUp();
44         System.setErr(sps);
45     }
46 
tearDown()47     protected void tearDown() throws Exception {
48         super.tearDown();
49         System.setErr(old);
50     }
51 
test()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 }
84