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1   /**
2    * Copyright (c) 2004-2016 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 org.junit.After;
31  import org.junit.Before;
32  import org.junit.Test;
33  
34  public class NoProviderAssertionTest {
35  
36      StringPrintStream sps = new StringPrintStream(System.err);
37      PrintStream old = System.err;
38      int diff = 1024 + new Random().nextInt(10000);
39  
40      @Before
41      public void setUp() throws Exception {
42          System.setErr(sps);
43      }
44  
45      @After
46      public void tearDown() throws Exception {
47          System.setErr(old);
48      }
49  
50      @Test
51      public void test() throws Exception {
52          Logger logger = LoggerFactory.getLogger(this.getClass());
53          String msg = "hello world " + diff;
54          logger.info(msg);
55          OutputVerifier.noProvider(sps);
56      }
57  }