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Java > Open Source Codes > gov > nasa > jpf > mc > TestRandom


1 //
2 // Copyright (C) 2005 United States Government as represented by the
3 // Administrator of the National Aeronautics and Space Administration
4 // (NASA). All Rights Reserved.
5 //
6 // This software is distributed under the NASA Open Source Agreement
7 // (NOSA), version 1.3. The NOSA has been approved by the Open Source
8 // Initiative. See the file NOSA-1.3-JPF at the top of the distribution
9 // directory tree for the complete NOSA document.
10 //
11 // THE SUBJECT SOFTWARE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY OF ANY
12 // KIND, EITHER EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING, BUT NOT
13 // LIMITED TO, ANY WARRANTY THAT THE SUBJECT SOFTWARE WILL CONFORM TO
14 // SPECIFICATIONS, ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR
15 // A PARTICULAR PURPOSE, OR FREEDOM FROM INFRINGEMENT, ANY WARRANTY THAT
16 // THE SUBJECT SOFTWARE WILL BE ERROR FREE, OR ANY WARRANTY THAT
17 // DOCUMENTATION, IF PROVIDED, WILL CONFORM TO THE SUBJECT SOFTWARE.
18 //
19 package gov.nasa.jpf.mc;
20
21 import gov.nasa.jpf.jvm.Verify;
22
23 /**
24  * test of gov.nasa.jpf.jvm.Verify nondeterministic data initailization
25  */
26 public class TestRandom {
27   public static void main (String JavaDoc[] args) {
28     TestRandom t = new TestRandom();
29
30     if (args.length > 0) {
31       // just run the specified tests
32 for (int i = 0; i < args.length; i++) {
33         String JavaDoc func = args[i];
34
35         // note that we don't use reflection here because this would
36 // blow up execution/test scope under JPF
37 if ("testRandom".equals(func)) {
38           int n = 3;
39
40           if ((i + 1) < args.length) {
41             i++;
42             n = Integer.parseInt(args[i]);
43           }
44
45           t.testRandom(n);
46         } else {
47           throw new IllegalArgumentException JavaDoc("unknown test function");
48         }
49       }
50     } else {
51       // that's mainly for our standalone test verification
52 t.testRandom(3);
53     }
54   }
55
56   void testRandom (int n) {
57     int i = Verify.random(n); // we should backtrack 0..n times to this location
58 Verify.incrementCounter(0); // counter '0' should have value (n+1) after JPF is done
59 System.out.println(i);
60   }
61 }
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