content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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 net.killa.kept;
  
  import java.util.concurrent.TimeUnit;
  
  import junit.framework.Assert;
  
  import org.apache.zookeeper.KeeperException;
  import org.apache.zookeeper.ZooDefs.Ids;
  import org.junit.After;
  import org.junit.Test;
  
  public class KeptLockTest extends KeptTestBase {
      private static final String LOCK = "/testkeptlock";
  
      @Override
      @After
      public void after() throws KeeperException, InterruptedException {
  	try {
  	    this.keeper.delete(KeptLockTest.LOCK, -1);
  	} catch (final KeeperException.NoNodeException e) {
  	    // ignore it
  	}
  	this.keeper.close();
      }
  
      @Test
      public void testKeptLock() throws KeeperException, InterruptedException {
  	final KeptLock kl = new KeptLock(this.keeper, KeptLockTest.LOCK,
  		Ids.OPEN_ACL_UNSAFE);
  
  	Assert.assertTrue("cannot lock", kl.tryLock());
  	Assert.assertFalse("can lock", kl.tryLock());
  
  	kl.unlock();
  	kl.lock();
  
  	Assert.assertFalse("can lock", kl.tryLock());
  
  	kl.unlock();
  	kl.lockInterruptibly();
  
  	Assert.assertFalse("can lock", kl.tryLock());
      }
  
      @Test
      public void testKeptLockWait() throws KeeperException, InterruptedException {
  	final KeptLock kl = new KeptLock(this.keeper, KeptLockTest.LOCK,
  		Ids.OPEN_ACL_UNSAFE);
  
  	final long now = System.currentTimeMillis();
  	Assert.assertTrue("cannot lock", kl.tryLock(5, TimeUnit.SECONDS));
  
  	Assert.assertTrue("time is way out of proportion",
  		System.currentTimeMillis() - now < 100);
  
  	Assert.assertFalse("can lock", kl.tryLock(5, TimeUnit.SECONDS));
  
  	Assert.assertTrue("time is way out of proportion",
  		System.currentTimeMillis() - now < 6000);
      }
  
      @Test(expected = IllegalStateException.class)
      public void testKeptLockUnlockUnlocked() throws KeeperException,
  	    InterruptedException {
  	final KeptLock kl = new KeptLock(this.keeper, KeptLockTest.LOCK,
  		Ids.OPEN_ACL_UNSAFE);
  
  	kl.unlock();
      }
  
      @Override
      public String getParent() {
  	return null;
      }
  }
  