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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 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  }