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AbstractCheckPointThresholdTest.java
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AbstractCheckPointThresholdTest.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.transaction.log.checkpoint;
import org.junit.Test;
import java.util.concurrent.atomic.AtomicReference;
import static org.junit.Assert.assertEquals;
public class AbstractCheckPointThresholdTest
{
@Test
public void shouldCallConsumerProvidingTheDescriptionWhenThresholdIsTrue() throws Throwable
{
// Given
String description = "description";
AbstractCheckPointThreshold threshold = new TheAbstractCheckPointThreshold( true, description );
final AtomicReference<String> calledWith = new AtomicReference<>();
// When
threshold.isCheckPointingNeeded( 42, calledWith::set );
// Then
assertEquals( description, calledWith.get() );
}
@Test
public void shouldNotCallConsumerProvidingTheDescriptionWhenThresholdIsFalse() throws Throwable
{
// Given
AbstractCheckPointThreshold threshold = new TheAbstractCheckPointThreshold( false, null );
// When
threshold.isCheckPointingNeeded( 42, s ->
{
throw new IllegalStateException( "nooooooooo!" );
} );
// Then
// should not throw
}
private static class TheAbstractCheckPointThreshold extends AbstractCheckPointThreshold
{
private final boolean reached;
TheAbstractCheckPointThreshold( boolean reached, String description )
{
super( description );
this.reached = reached;
}
@Override
public void initialize( long transactionId )
{
}
@Override
public void checkPointHappened( long transactionId )
{
}
@Override
protected boolean thresholdReached( long lastCommittedTransactionId )
{
return reached;
}
}
}