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NativeLabelScanStoreTest.java
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NativeLabelScanStoreTest.java
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/*
* Copyright (c) 2002-2017 "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.index.labelscan;
import org.hamcrest.Matcher;
import org.hamcrest.Matchers;
import org.junit.Rule;
import org.junit.Test;
import java.io.File;
import java.io.IOException;
import org.neo4j.io.fs.FileSystemAbstraction;
import org.neo4j.io.pagecache.PageCache;
import org.neo4j.kernel.api.impl.labelscan.LabelScanStoreTest;
import org.neo4j.kernel.api.labelscan.LabelScanStore;
import org.neo4j.kernel.impl.api.scan.FullStoreChangeStream;
import org.neo4j.kernel.lifecycle.LifeSupport;
import org.neo4j.kernel.monitoring.Monitors;
import org.neo4j.test.rule.PageCacheRule;
import static org.junit.Assert.assertTrue;
import static org.neo4j.kernel.impl.api.scan.FullStoreChangeStream.EMPTY;
public class NativeLabelScanStoreTest extends LabelScanStoreTest
{
@Rule
public PageCacheRule pageCacheRule = new PageCacheRule();
@Override
protected LabelScanStore createLabelScanStore( FileSystemAbstraction fileSystemAbstraction, File rootFolder,
FullStoreChangeStream fullStoreChangeStream, boolean usePersistentStore, boolean readOnly,
LabelScanStore.Monitor monitor )
{
Monitors monitors = new Monitors();
monitors.addMonitorListener( monitor );
PageCache pageCache = pageCacheRule.getPageCache( fileSystemAbstraction );
return new NativeLabelScanStore( pageCache, rootFolder,
fullStoreChangeStream, readOnly, monitors );
}
@Override
protected Matcher<Iterable<? super String>> hasBareMinimumFileList()
{
return Matchers.hasItem( Matchers.equalTo( NativeLabelScanStore.FILE_NAME ) );
}
@Override
protected void corruptIndex( FileSystemAbstraction fileSystem, File rootFolder ) throws IOException
{
File lssFile = new File( rootFolder, NativeLabelScanStore.FILE_NAME );
scrambleFile( lssFile );
}
@Test
public void shouldStartPopulationAgainIfNotCompletedFirstTime() throws Exception
{
// given
// label scan store init but no start
LifeSupport life = new LifeSupport();
TrackingMonitor monitor = new TrackingMonitor();
life.add( createLabelScanStore( fileSystemRule.get(), dir, EMPTY, true, false, monitor ) );
life.init();
assertTrue( monitor.noIndexCalled );
monitor.reset();
life.shutdown();
// when
// starting label scan store again
life = new LifeSupport();
life.add( createLabelScanStore( fileSystemRule.get(), dir, EMPTY, true, false, monitor ) );
life.init();
// then
// label scan store should recognize it still needs to be rebuilt
assertTrue( monitor.corruptedIndex );
life.start();
assertTrue( monitor.rebuildingCalled );
assertTrue( monitor.rebuiltCalled );
life.shutdown();
}
}