Examples of CoverageHistory

nz.ac.waikato.modeljunit.coverage.CoverageHistory
A wrapper class that adds history recording to any CoverageMetric. This is useful for drawing graphs of how the coverage changes over time etc. For example, new CoverageHistory(new ActionCoverage(), 10) behaves exactly the same as the ActionCoverage metric, but also records a snapshot of its coverage level each 10 calls to doneTransition(...).
Note that you must add this CoverageHistory wrapper as the listener to the model, rather than adding the underlying metric. If you add both, the metrics will be recorded twice as fast, which is probably not what you want!
@author marku

Examples of nz.ac.waikato.modeljunit.coverage.CoverageHistory

  /** This tests a random walk, plus transition coverage */
  public static void testRandomWalk()
  {
    output_.write("STARTING RANDOM\n");
    Tester tester = new RandomTester(quidonc);
    CoverageHistory metric = new CoverageHistory(new TransitionCoverage(), 1);
    tester.addListener(metric);
    tester.generate(100);
    int coverage = metric.getCoverage();
    List<Integer> hist = metric.getHistory();
    Assert.assertNotNull(hist);
    output_.write("transhist="+metric.toCSV()+"\n");
    Assert.assertEquals(16, coverage);
    Assert.assertEquals(-1, metric.getMaximum());
    Assert.assertEquals("Incorrect history size.", 101, hist.size());
    Assert.assertEquals(new Integer(0), hist.get(0));
    Assert.assertEquals(new Integer(coverage), hist.get(hist.size() - 1));
    // System.out.println(output_.toString());
  }

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Examples of nz.ac.waikato.modeljunit.coverage.CoverageHistory

  /** This tests a greedy random walk, plus transition coverage */
  public static void testGreedyRandomWalk()
  {
    output_.write("STARTING GREEDY\n");
    Tester tester = new GreedyTester(new QuiDonc());
    CoverageHistory metric = new CoverageHistory(new TransitionCoverage(), 1);
    tester.addListener(metric);
    tester.generate(100);
    int coverage = metric.getCoverage();
    List<Integer> hist = metric.getHistory();
    Assert.assertNotNull(hist);
    output_.write("transhist="+metric.toCSV()+"\n");
    Assert.assertEquals(17, coverage);
    Assert.assertEquals(17, metric.getMaximum());
    Assert.assertEquals("Incorrect history size.", 101, hist.size());
    Assert.assertEquals(new Integer(0), hist.get(0));
    Assert.assertEquals(new Integer(coverage), hist.get(hist.size() - 1));
    // System.out.println(output_.toString());
  }

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Examples of nz.ac.waikato.modeljunit.coverage.CoverageHistory

  /** This tests an all-round-trips walk, plus transition coverage */
  public static void testAllRoundTrips()
  {
    output_.write("STARTING ALL ROUND TRIPS\n");
    Tester tester = new AllRoundTester(new QuiDonc());
    CoverageHistory metric = new CoverageHistory(new TransitionCoverage(), 1);
    tester.addCoverageMetric(metric);
    tester.generate(100);
    int coverage = metric.getCoverage();
    List<Integer> hist = metric.getHistory();
    Assert.assertNotNull(hist);
    output_.write("transhist="+metric.toCSV()+"\n");
    Assert.assertEquals(12, coverage);
    Assert.assertEquals(-1, metric.getMaximum());
    // TODO: Assert.assertEquals("Incorrect history size.", 101, hist.size());
    Assert.assertEquals(new Integer(0), hist.get(0));
    Assert.assertEquals(new Integer(coverage), hist.get(hist.size() - 1));
    // System.out.println(output_.toString());
  }

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Examples of nz.ac.waikato.modeljunit.coverage.CoverageHistory


  /** This tests a random walk, plus ActionCoverage metric with history.*/
  public static void testRandomWalk()
  {
    ModelTestCase model = new ModelTestCase(new FSM());
    CoverageHistory metric = new CoverageHistory(new ActionCoverage(), 1);
    model.addCoverageMetric(metric);
    model.randomWalk(4); // 4 transitions plus a few resets
    int coverage = metric.getCoverage();
    Assert.assertEquals(3, coverage);
    Assert.assertEquals(-1, metric.getMaximum()); // unknown.
    List<Integer> hist = metric.getHistory();
    Assert.assertNotNull(hist);
    Assert.assertEquals("Incorrect history size.", 7, hist.size());
    Assert.assertEquals(new Integer(0), hist.get(0));
    Assert.assertEquals(new Integer(coverage), hist.get(hist.size() - 1));


    // we print this just for interest
    //    System.out.println("Action coverage: " + metric.getPercentage());
    //    System.out.print("History: ");
    //    for (Integer cov : metric.getHistory())
    //      System.out.print(cov + ", ");
    //    System.out.println();


    model.resetCoverageMetrics();
    hist = metric.getHistory();
    Assert.assertNotNull(hist);
    Assert.assertEquals("History not reset.", 1, hist.size());
    Assert.assertEquals(new Integer(0), hist.get(0));
    
    model.removeCoverageMetric(metric);

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Examples of nz.ac.waikato.modeljunit.coverage.CoverageHistory


  /** This tests a greedy random walk, plus TransitionCoverage metric with history */
  public static void testGreedyRandomWalk()
  {
    ModelTestCase model = new ModelTestCase(new FSM());
    CoverageHistory metric = new CoverageHistory(new TransitionCoverage(), 1);
    model.addCoverageMetric(metric);
    model.greedyRandomWalk(7); // 7 transitions plus a few resets
    int coverage = metric.getCoverage();
    Assert.assertEquals(5, coverage);
    Assert.assertEquals(-1, metric.getMaximum());
    List<Integer> hist = metric.getHistory();
    Assert.assertNotNull(hist);
    Assert.assertEquals("Incorrect history size.", 10, hist.size());
    Assert.assertEquals(new Integer(0), hist.get(0));
    Assert.assertEquals(new Integer(coverage), hist.get(hist.size() - 1));
  }

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Examples of nz.ac.waikato.modeljunit.coverage.CoverageHistory

    RandomTester tester = new RandomTester(new FSM());
    //System.out.println("action0="+tester.getModel().getActionName(0));
    //System.out.println("action1="+tester.getModel().getActionName(1));
    //System.out.println("action2="+tester.getModel().getActionName(2));
    //System.out.println("action3="+tester.getModel().getActionName(3));
    CoverageHistory metric =
      new CoverageHistory(new ActionCoverage(), 1);
    tester.addListener(metric);
    
    Random random = new Random(3);
    tester.setRandom(random);
    tester.generate(5);
    int coverage = metric.getCoverage();
    Assert.assertEquals(1, coverage);
    Assert.assertEquals(4, metric.getMaximum());
    List<Integer> hist = metric.getHistory();
    Assert.assertNotNull(hist);
    Assert.assertEquals("Incorrect history size.", 6, hist.size());
    Assert.assertEquals(new Integer(0), hist.get(0));
    Assert.assertEquals(new Integer(coverage), hist.get(hist.size() - 1));


    // we print this just for interest
    //    System.out.println("Action coverage: " + metric.getPercentage());
    //    System.out.print("History: ");
    //    for (Integer cov : metric.getHistory())
    //      System.out.print(cov + ", ");
    //    System.out.println();


    metric.clear();
    hist = metric.getHistory();
    Assert.assertNotNull(hist);
    Assert.assertEquals("History not reset.", 1, hist.size());
    Assert.assertEquals(new Integer(0), hist.get(0));
  }

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Examples of nz.ac.waikato.modeljunit.coverage.CoverageHistory

  /** This tests a random walk, plus ActionCoverage metric with history.*/
  public static void testGreedyWalk()
  {
    Tester tester = new GreedyTester(new FSM());
    tester.addListener(new VerboseListener());
    CoverageHistory metric =
      new CoverageHistory(new ActionCoverage(), 1);
    tester.addCoverageMetric(metric);
    tester.setRandom(new Random(1));
    tester.generate(7);
    int coverage = metric.getCoverage();
    Assert.assertEquals(4, coverage);
    Assert.assertEquals(4, metric.getMaximum());
    List<Integer> hist = metric.getHistory();
    Assert.assertNotNull(hist);
    Assert.assertEquals("Incorrect history size.", 8, hist.size());
    Assert.assertEquals(new Integer(0), hist.get(0));
    Assert.assertEquals(new Integer(coverage), hist.get(hist.size() - 1));
    Assert.assertEquals("Similar to a random walk, but always takes an unexplored" +
        " transition if one is enabled in the current state. " +
        " This gives faster transition coverage initially, then" +
        " has the same behaviour as a random walk.", tester.getDescription());


    // we print this just for interest
    //    System.out.println("Action coverage: " + metric.getPercentage());
    //    System.out.print("History: ");
    //    for (Integer cov : metric.getHistory())
    //      System.out.print(cov + ", ");
    //    System.out.println();


    metric.clear();
    hist = metric.getHistory();
    Assert.assertNotNull(hist);
    Assert.assertEquals("History not reset.", 1, hist.size());
    Assert.assertEquals(new Integer(0), hist.get(0));
  }

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Examples of nz.ac.waikato.modeljunit.coverage.CoverageHistory

  {
    RandomTester tester = new RandomTester(new FSM());
    tester.buildGraph();
    tester.setResetProbability(0.9);
    CoverageMetric trCover = new TransitionCoverage();
    CoverageHistory hist = new CoverageHistory(trCover,1);
    tester.addListener(hist);
    tester.generate(40);
    // the random walk should choose reset almost all the time
    // so should not get much past the first transition.
    Assert.assertEquals(41, hist.getHistory().size());
    Assert.assertEquals(1, trCover.getCoverage());
  }

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Examples of nz.ac.waikato.modeljunit.coverage.CoverageHistory

{
  /** This tests a random walk, plus TransitionCoverage metric with history.*/
  public static void testAllRoundWalk()
  {
    AllRoundTester tester = new AllRoundTester(new FSM());
    CoverageHistory metric = new CoverageHistory(new TransitionCoverage(), 1);
    //tester.addListener(new VerboseListener());
    tester.addCoverageMetric(metric);
    tester.setLoopTolerance(1);
    tester.setRandom(new Random(3));
    tester.generate(10);
    int coverage = metric.getCoverage();
    Assert.assertEquals("Loop-limited Greedy Random Walk", tester.getName());
    Assert.assertEquals("This tester limits another tester (Greedy Random Walk)" +
        " so that it goes around loops a maximum number of times" +
        " (once by default).", tester.getDescription());
    Assert.assertEquals(1, tester.getLoopTolerance());
    Assert.assertEquals(5, coverage);
    Assert.assertEquals(5, metric.getMaximum());
    List<Integer> hist = metric.getHistory();
    Assert.assertNotNull(hist);
    Assert.assertEquals("Incorrect history size.", 15, hist.size());
    Assert.assertEquals(new Integer(0), hist.get(0));
    Assert.assertEquals(new Integer(coverage), hist.get(hist.size() - 1));


    // we print this just for interest
    System.out.println("Action coverage: " + metric.getPercentage());
    System.out.print("History: ");
    for (Integer cov : metric.getHistory())
      System.out.print(cov + ", ");
    System.out.println();


    metric.clear();
    hist = metric.getHistory();
    Assert.assertNotNull(hist);
    Assert.assertEquals("History not reset.", 1, hist.size());
    Assert.assertEquals(new Integer(0), hist.get(0));
  }

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Examples of nz.ac.waikato.modeljunit.coverage.CoverageHistory


  public void run()
  {
    for (int pass=0; pass < passes; pass++) {
      Model model = new Model(new QuiDonc());
      metric = new CoverageHistory(new TransitionCoverage(), 1);
      model.addListener(metric);
      int seed = rand.nextInt();


      seeds.add(seed);

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