diff src/tests/gov/nasa/jpf/test/mc/data/NativeStateHolderTest.java @ 0:61d41facf527

initial v8 import (history reset)
author Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
date Fri, 23 Jan 2015 10:14:01 -0800
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/tests/gov/nasa/jpf/test/mc/data/NativeStateHolderTest.java	Fri Jan 23 10:14:01 2015 -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.data;
+
+import gov.nasa.jpf.ListenerAdapter;
+import gov.nasa.jpf.search.Search;
+import gov.nasa.jpf.util.test.TestJPF;
+import gov.nasa.jpf.vm.ChoiceGenerator;
+import gov.nasa.jpf.vm.Instruction;
+import gov.nasa.jpf.vm.NativeStateHolder;
+import gov.nasa.jpf.vm.ThreadInfo;
+import gov.nasa.jpf.vm.VM;
+import gov.nasa.jpf.vm.Verify;
+import org.junit.Test;
+
+/**
+ * regression test for NativeStateHolder API
+ */
+public class NativeStateHolderTest extends TestJPF {
+
+  public static class NSHListener extends ListenerAdapter implements NativeStateHolder {
+    
+    // note that we don't restore nativeState, i.e. once it has reached the threshold
+    // the search should terminate
+    
+    int nativeState;
+    int n;
+        
+    @Override
+    public void vmInitialized (VM vm){
+      vm.getSerializer().addNativeStateHolder(this);
+      System.out.println("native state holder registered");
+    }
+    
+    @Override
+    public void choiceGeneratorRegistered (VM vm, ChoiceGenerator<?> cg, ThreadInfo ti, Instruction insn){
+      n++;
+      System.out.print("transition: " + n);
+      
+      if (nativeState < 5){
+        nativeState++;
+        System.out.println(", nativeState modified: " + nativeState);
+        
+      } else {
+        System.out.println(", no nativeState change");
+        if (n > 10){
+          fail("state leak despite constant nativesState");
+        }
+      }
+    }
+    
+    @Override
+    public void stateAdvanced (Search search){
+      System.out.println("cg advanced, isNewState: " + search.isNewState());
+    }
+
+    @Override
+    public void stateBacktracked (Search search){
+      System.out.println("state backtracked");
+    }
+
+    
+    @Override
+    public int getHash() {
+      return nativeState;
+    }
+  }
+  
+
+  @Test
+  public void testNativeStateHolder(){    
+    if (verifyNoPropertyViolation("+listener=" + getClass().getName() + "$NSHListener")){
+      while (true){
+        Verify.breakTransition("cycle");
+      }
+    }
+  }
+  
+  
+}