Mercurial > hg > Members > kono > jpf-core
view src/tests/gov/nasa/jpf/test/mc/basic/TransitionLengthTest.java @ 0:61d41facf527
initial v8 import (history reset)
author | Peter Mehlitz <Peter.C.Mehlitz@nasa.gov> |
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date | Fri, 23 Jan 2015 10:14:01 -0800 |
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/* * Copyright (C) 2014, United States Government, as represented by the * Administrator of the National Aeronautics and Space Administration. * All rights reserved. * * The Java Pathfinder core (jpf-core) platform is licensed under the * Apache License, Version 2.0 (the "License"); you may not use this file except * in compliance with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0. * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package gov.nasa.jpf.test.mc.basic; import gov.nasa.jpf.ListenerAdapter; import gov.nasa.jpf.util.test.TestJPF; import gov.nasa.jpf.vm.ChoiceGenerator; import gov.nasa.jpf.vm.Instruction; import gov.nasa.jpf.vm.ThreadInfo; import gov.nasa.jpf.vm.VM; import gov.nasa.jpf.vm.choice.BreakGenerator; import org.junit.Test; /** * JPF regression test for breaking transitions when exceeding * vm.max_transition_length. While the program would not terminate outside * JPF, it will terminate when run under JPF because of state matching * * the listener is purely informative - if the test fails it doesn't terminate. * It should report two registrations within the loop, the second one matching * the state that was stored after the first one. However, the number of * transition breaks might change with more sophisticated loop detection */ public class TransitionLengthTest extends TestJPF { public static class Listener extends ListenerAdapter { @Override public void choiceGeneratorRegistered (VM vm, ChoiceGenerator<?> nextCG, ThreadInfo currentThread, Instruction executedInstruction) { if (nextCG instanceof BreakGenerator){ System.out.println(); System.out.println("registered: " + nextCG); } } } @Test public void testTermination(){ if (verifyNoPropertyViolation("+vm.max_transition_length=500", "+listener=" + TransitionLengthTest.class.getName() + "$Listener")){ System.out.println("starting loop"); while (true){ // no program state change withing body - this should eventually run into state matching System.out.print("."); } // we can never get here outside of JPF } } }