/*
 * 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.util.test.TestJPF;

import org.junit.Test;

/**
 * Ensures that a recursive lock/unlock doesn't leave the lock in an acquired state.
 */
public class RecursiveLockTest extends TestJPF
{
   @Test
   public void recursiveUnlock() throws InterruptedException
   {
      final Object lock;
      Thread thread;
      Runnable task;
      
      if (verifyNoPropertyViolation())
      {
         lock = new Object();
         
         synchronized (lock)
         {
            synchronized (lock)
            {
               // nothing to do
            }
         }
         
         task = new Runnable()
         {
            @Override
			public void run()
            {
               synchronized (lock)
               {
                  // nothing to do
               }
            }  
         };
         
         thread = new Thread(task);
         
         thread.start();
         thread.join();
      }
   }
}