Mercurial > hg > Members > kono > jpf-core

annotate src/tests/gov/nasa/jpf/test/mc/data/EventGeneratorTest.java @ 20:b1790909ebb1

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changed EventForest to derive from EventTree, which kills three birds with one stone - guaranteeing there is a default tree, being able to initialize a concrete forest with one method (createRoot), and being able to use both EventTree and EventForest with a ForestCGFactory, i.e. without changes to the config other than the event tree class name slight refactoring of EventTree (createTree() -> createRoot()) to make it more obvious how the result is used
author Peter Mehlitz <pcmehlitz@gmail.com>
date Mon, 06 Apr 2015 12:08:03 -0700
parents b920e6b1be83
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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.data;
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20
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21 import gov.nasa.jpf.EventProducer;
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22 import gov.nasa.jpf.util.event.EventContext;
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23 import gov.nasa.jpf.util.event.Event;
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24 import gov.nasa.jpf.util.event.NoEvent;
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25 import gov.nasa.jpf.util.event.TestEventTree;
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26 import gov.nasa.jpf.util.test.TestJPF;
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27 import gov.nasa.jpf.vm.Verify;
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28 import java.util.ArrayList;
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29 import java.util.Iterator;
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30 import java.util.List;
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31 import org.junit.Test;
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32
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33 /**
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34 * regression test for EventGenerator based test drivers
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35 */
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36 public class EventGeneratorTest extends TestJPF {
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37
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38
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39 //---------------------------------------------------------------------------------------
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40 public static class SimpleTree extends TestEventTree {
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41 public SimpleTree (){
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42 expected = new String[] {
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43 "a1b",
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44 "axxb"
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45 };
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46 }
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47
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48 @Override
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49 public Event createRoot() {
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50 return
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51 sequence(
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52 event("a"),
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53 alternatives(
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54 event("1"),
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55 iteration(2,
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56 event("x")
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57 )
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58 ),
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59 event("b")
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60 );
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61 }
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62 }
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63
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64 @Test
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65 public void testSimpleTree(){
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66 if (!isJPFRun()){
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67 Verify.resetCounter(0);
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68 }
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69
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70 if (verifyNoPropertyViolation("+event.tree.class=.test.mc.data.EventGeneratorTest$SimpleTree", "+log.info=event")){
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71 EventProducer producer = new EventProducer();
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72 StringBuilder sb = new StringBuilder();
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73
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74 while (producer.processNextEvent()){
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75 sb.append(producer.getEventName());
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76 }
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77
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78 String trace = sb.toString();
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79 System.out.print("got trace: ");
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80 System.out.println(trace);
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81
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82 if (!producer.checkPath()){
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83 fail("unexpected trace failure");
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84 }
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85
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86 if (producer.isCompletelyCovered()){
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87 Verify.setCounter(0, 1);
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88 }
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89 }
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90
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91 if (!isJPFRun()){
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92 if (Verify.getCounter(0) != 1){
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93 fail("unaccounted trace failure");
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94 }
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95 }
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96 }
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97
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98 //-------------------------------------------------------------------------------------
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99 public static class CombinationTree extends TestEventTree {
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100 public CombinationTree (){
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101 printTree();
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102 printPaths();
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103 }
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104
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105 @Override
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106 public Event createRoot() {
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107 Event[] options = { event("A"), event("B"), event("C") };
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108
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109 return anyCombination(options);
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110 }
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111 }
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112
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113 @Test
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114 public void testAnyCombination (){
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115 if (verifyNoPropertyViolation("+event.tree.class=.test.mc.data.EventGeneratorTest$CombinationTree", "+log.info=event")){
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116 EventProducer producer = new EventProducer();
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117 StringBuilder sb = new StringBuilder();
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118
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119 while (producer.processNextEvent()){
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120 sb.append(producer.getEventName());
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121 }
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122 }
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123 }
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124
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125
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126 //------------------------------------------------------------------------------------
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127 public static class ExpandTree extends TestEventTree {
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128 public ExpandTree (){
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129 printTree();
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130 }
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131
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132 @Override
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133 public Event createRoot(){
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134 return
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135 sequence(
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136 event("a"),
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137 event("*"),
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138 event("<opt>"),
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139 event("b"));
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140 }
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141 }
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142
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143 public static class MyEventContext implements EventContext {
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144 @Override
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145 public Event map (Event e){
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146 String eventName = e.getName();
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147
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148 if (eventName.equals("*")){
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149 System.out.println(" expanding " + eventName + " to [X,Y]");
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150 List<Event> list = new ArrayList<Event>();
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151 list.add( new Event("X"));
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152 list.add( new Event("Y"));
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153 return e.replaceWithAlternativesFrom(list);
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154
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155 } else if (eventName.equals("<opt>")){
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156 System.out.println(" skipping " + eventName);
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157 // that's effectively event removal without changing the structure of the tree
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158 return e.replaceWith(new NoEvent());
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159 }
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160
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161 return e;
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162 }
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163 }
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164
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165 @Test
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166 public void testEventExpansion (){
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167 if (verifyNoPropertyViolation("+event.tree.class=.test.mc.data.EventGeneratorTest$ExpandTree",
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168 "+event.context.class=.test.mc.data.EventGeneratorTest$MyEventContext",
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169 "+log.info=event")){
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170 EventProducer producer = new EventProducer();
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171 StringBuilder sb = new StringBuilder();
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172
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173 while (producer.processNextEvent()){
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174 String eventName = producer.getEventName();
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175 if (eventName != null){
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176 sb.append(eventName);
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177 }
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178 }
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179
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180 String trace = sb.toString();
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181 System.out.print("--- got trace: ");
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182 System.out.println(trace);
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183 }
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184 }
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185
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186
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187
0
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188 }