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FileWatcherLifecycleAdapterTest.java
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FileWatcherLifecycleAdapterTest.java
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/*
* Copyright (c) 2002-2018 "Neo Technology,"
* Network Engine for Objects in Lund AB [http://neotechnology.com]
*
* This file is part of Neo4j.
*
* Neo4j is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.neo4j.kernel.impl.util;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import org.mockito.Mockito;
import java.util.concurrent.CountDownLatch;
import org.neo4j.io.fs.watcher.FileWatcher;
import org.neo4j.io.fs.watcher.SilentFileWatcher;
import org.neo4j.kernel.impl.scheduler.CentralJobScheduler;
import org.neo4j.kernel.impl.util.watcher.FileWatcherLifecycleAdapter;
import static org.mockito.Mockito.verify;
public class FileWatcherLifecycleAdapterTest
{
private static CentralJobScheduler jobScheduler;
private FileWatcher fileWatcher = Mockito.mock( FileWatcher.class );
@BeforeClass
public static void setUp()
{
jobScheduler = new CentralJobScheduler();
}
@AfterClass
public static void tearDown()
{
jobScheduler.shutdown();
}
@Test
public void startMonitoringWhenLifecycleStarting() throws Throwable
{
CountDownLatch latch = new CountDownLatch( 1 );
FileWatcher watcher = new TestFileWatcher( latch );
FileWatcherLifecycleAdapter watcherAdapter = new FileWatcherLifecycleAdapter( jobScheduler, watcher );
watcherAdapter.init();
watcherAdapter.start();
latch.await();
}
@Test
public void stopMonitoringWhenLifecycleStops() throws Throwable
{
FileWatcherLifecycleAdapter watcherAdapter = new FileWatcherLifecycleAdapter( jobScheduler, fileWatcher );
watcherAdapter.init();
watcherAdapter.start();
watcherAdapter.stop();
verify( fileWatcher ).stopWatching();
}
@Test
public void closeFileWatcherOnShutdown() throws Throwable
{
FileWatcherLifecycleAdapter watcherAdapter = new FileWatcherLifecycleAdapter( jobScheduler, fileWatcher );
watcherAdapter.init();
watcherAdapter.start();
watcherAdapter.stop();
watcherAdapter.shutdown();
verify( fileWatcher ).close();
}
private static class TestFileWatcher extends SilentFileWatcher
{
private CountDownLatch latch;
TestFileWatcher( CountDownLatch latch )
{
this.latch = latch;
}
@Override
public void startWatching()
{
latch.countDown();
}
}
}