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annotate src/tests/gov/nasa/jpf/test/mc/basic/CGReorderTest.java @ 0:61d41facf527

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author Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
date Fri, 23 Jan 2015 10:14:01 -0800
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1 /*
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2 * Copyright (C) 2014, United States Government, as represented by the
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3 * Administrator of the National Aeronautics and Space Administration.
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4 * All rights reserved.
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5 *
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6 * The Java Pathfinder core (jpf-core) platform is licensed under the
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7 * Apache License, Version 2.0 (the "License"); you may not use this file except
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8 * in compliance with the License. You may obtain a copy of the License at
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9 *
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10 * http://www.apache.org/licenses/LICENSE-2.0.
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11 *
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12 * Unless required by applicable law or agreed to in writing, software
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13 * distributed under the License is distributed on an "AS IS" BASIS,
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14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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15 * See the License for the specific language governing permissions and
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16 * limitations under the License.
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17 */
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18
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19 package gov.nasa.jpf.test.mc.basic;
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20
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21 import gov.nasa.jpf.ListenerAdapter;
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22 import gov.nasa.jpf.util.test.TestJPF;
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23 import gov.nasa.jpf.vm.ChoiceGenerator;
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24 import gov.nasa.jpf.vm.DoubleChoiceGenerator;
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25 import gov.nasa.jpf.vm.Instruction;
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26 import gov.nasa.jpf.vm.IntChoiceGenerator;
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27 import gov.nasa.jpf.vm.ThreadInfo;
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28 import gov.nasa.jpf.vm.VM;
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29 import gov.nasa.jpf.vm.SystemState;
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30 import gov.nasa.jpf.vm.Verify;
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31 import gov.nasa.jpf.vm.choice.DoubleChoiceFromList;
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32 import gov.nasa.jpf.vm.choice.IntIntervalGenerator;
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33
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34 import java.util.Comparator;
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35
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36 import org.junit.Test;
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37
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38 /**
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39 * regression test for choice reordering APIs
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40 */
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41 public class CGReorderTest extends TestJPF {
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42
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43 public static class ReverseListener extends ListenerAdapter {
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44 @Override
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45 public void choiceGeneratorSet (VM vm, ChoiceGenerator<?> newCG){
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46 if (newCG instanceof IntIntervalGenerator){
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47 System.out.println("reverse choice enumeration order");
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48 ((IntIntervalGenerator)newCG).reverse();
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49 }
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50 }
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51
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52 int lastVal = Integer.MAX_VALUE;
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53 @Override
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54 public void choiceGeneratorAdvanced (VM vm, ChoiceGenerator<?> currentCG){
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55 if (currentCG instanceof IntIntervalGenerator){
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56 int v = ((IntChoiceGenerator)currentCG).getNextChoice();
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57 if (v >= lastVal){
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58 fail("values not decreasing");
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59 }
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60 lastVal = v;
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61 }
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62 }
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63 }
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64
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65 @Test
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66 public void testReverse(){
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67 if (verifyNoPropertyViolation("+listener=.test.mc.basic.CGReorderTest$ReverseListener")){
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68 int x = Verify.getInt(0,4);
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69 System.out.println(x);
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70 }
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71 }
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72
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73
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74 public static class ReorderListener extends ListenerAdapter {
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75 ChoiceGenerator<?> reorderedCG;
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76
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77 @Override
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78 public void choiceGeneratorRegistered (VM vm, ChoiceGenerator<?> nextCG, ThreadInfo ti, Instruction executedInsn){
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79 // make sure we are not getting recursive (could also use setId())
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80 if (nextCG instanceof DoubleChoiceFromList && nextCG != reorderedCG){
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81 System.out.println("reorder choices");
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82 reorderedCG = ((DoubleChoiceFromList)nextCG).reorder( new Comparator<Double>(){
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83 @Override
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84 public int compare (Double d1, Double d2){
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85 return (int) (d2 - d1);
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86 }
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87 });
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88
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89 System.out.println("replacing: " + nextCG);
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90 System.out.println("with: " + reorderedCG);
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91 SystemState ss = vm.getSystemState();
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92 ss.removeNextChoiceGenerator();
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93 ss.setNextChoiceGenerator(reorderedCG);
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94 }
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95 }
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96
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97 double lastVal = Double.MAX_VALUE;
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98 @Override
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99 public void choiceGeneratorAdvanced (VM vm, ChoiceGenerator<?> currentCG){
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100 if (currentCG instanceof DoubleChoiceGenerator){
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101 double v = ((DoubleChoiceGenerator)currentCG).getNextChoice();
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102 if (v >= lastVal){
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103 fail("values not decreasing");
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104 }
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105 lastVal = v;
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106 }
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107 }
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108 }
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109
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110 @Test
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111 public void testReorder(){
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112 if (verifyNoPropertyViolation("+listener=.test.mc.basic.CGReorderTest$ReorderListener")){
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113 double x = Verify.getDoubleFromList(1.0, 2.0, 3.0, 4.0);
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114 System.out.println(x);
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115 }
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116 }
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117
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118 }