1// Copyright (c) 2011, Mike Samuel
2// All rights reserved.
3//
4// Redistribution and use in source and binary forms, with or without
5// modification, are permitted provided that the following conditions
6// are met:
7//
8// Redistributions of source code must retain the above copyright
9// notice, this list of conditions and the following disclaimer.
10// Redistributions in binary form must reproduce the above copyright
11// notice, this list of conditions and the following disclaimer in the
12// documentation and/or other materials provided with the distribution.
13// Neither the name of the OWASP nor the names of its contributors may
14// be used to endorse or promote products derived from this software
15// without specific prior written permission.
16// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
19// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
20// COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
21// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
22// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
24// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
26// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27// POSSIBILITY OF SUCH DAMAGE.
28
29package org.owasp.html;
30
31import java.util.Random;
32
33import junit.framework.TestCase;
34
35/**
36 * A testcase that has a random seed.
37 * Subclasses are stochastic -- are not guaranteed to pass or fail consistently.
38 * If you see a failure, please report it along with the seed from the output.
39 * If you want to repeat a failure, set the system property "junit.seed".
40 *
41 * @author Mike Samuel <mikesamuel@gmail.com>
42 */
43abstract class FuzzyTestCase extends TestCase {
44
45  protected long seed = System.currentTimeMillis();
46  {
47    String seedStr = System.getProperty("junit.seed");
48    if (seedStr != null) {
49      try {
50        seed = Long.parseLong(seedStr);
51      } catch (NumberFormatException ex) {
52        ex.printStackTrace();
53      }
54    }
55  }
56
57  protected Random rnd;
58
59  @Override protected void tearDown() throws Exception {
60    super.tearDown();
61    rnd = null;
62  }
63
64  @Override protected void setUp() throws Exception {
65    super.setUp();
66    rnd = new Random(seed);
67  }
68}
69