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DeleteNodeStressIT.java
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DeleteNodeStressIT.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.cypher;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import java.io.IOException;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicBoolean;
import org.neo4j.graphdb.Node;
import org.neo4j.graphdb.Result;
import org.neo4j.graphdb.Transaction;
import org.neo4j.test.rule.ImpermanentDatabaseRule;
import static org.junit.Assert.assertFalse;
import static org.neo4j.graphdb.Label.label;
public class DeleteNodeStressIT
{
private final AtomicBoolean hasFailed = new AtomicBoolean( false );
@Rule
public ImpermanentDatabaseRule db = new ImpermanentDatabaseRule();
@Before
public void setup()
{
for ( int i = 0; i < 100; i++ )
{
try ( Transaction tx = db.beginTx() )
{
for ( int j = 0; j < 100; j++ )
{
Node node = db.createNode( label( "L" ) );
node.setProperty( "prop", i + j );
}
tx.success();
}
}
}
private final ExecutorService executorService = Executors.newFixedThreadPool( 10 );
@Test
public void shouldBeAbleToReturnNodesWhileDeletingNode() throws IOException, ExecutionException, InterruptedException
{
// Given
executeInThread( "MATCH (n:L {prop:42}) OPTIONAL MATCH (m:L {prop:1337}) WITH n MATCH (n) return n" );
executeInThread( "MATCH (n:L {prop:42}) DELETE n" );
// When
executorService.awaitTermination( 3L, TimeUnit.SECONDS );
// Then
assertFalse(hasFailed.get());
}
@Test
public void shouldBeAbleToCheckPropertiesWhileDeletingNode() throws IOException, ExecutionException, InterruptedException
{
// Given
executeInThread( "MATCH (n:L {prop:42}) OPTIONAL MATCH (m:L {prop:1337}) WITH n MATCH (n) RETURN exists(n.prop)" );
executeInThread( "MATCH (n:L {prop:42}) DELETE n" );
// When
executorService.awaitTermination( 3L, TimeUnit.SECONDS );
assertFalse(hasFailed.get());
}
@Test
public void shouldBeAbleToRemovePropertiesWhileDeletingNode() throws IOException, ExecutionException, InterruptedException
{
// Given
executeInThread( "MATCH (n:L {prop:42}) OPTIONAL MATCH (m:L {prop:1337}) WITH n MATCH (n) REMOVE n.prop" );
executeInThread( "MATCH (n:L {prop:42}) DELETE n" );
// When
executorService.awaitTermination( 3L, TimeUnit.SECONDS );
assertFalse(hasFailed.get());
}
@Test
public void shouldBeAbleToSetPropertiesWhileDeletingNode() throws IOException, ExecutionException, InterruptedException
{
// Given
executeInThread( "MATCH (n:L {prop:42}) OPTIONAL MATCH (m:L {prop:1337}) WITH n MATCH (n) SET n.foo = 'bar'" );
executeInThread( "MATCH (n:L {prop:42}) DELETE n" );
// When
executorService.awaitTermination( 3L, TimeUnit.SECONDS );
assertFalse(hasFailed.get());
}
@Test
public void shouldBeAbleToCheckLabelsWhileDeleting() throws IOException, ExecutionException, InterruptedException
{
// Given
executeInThread( "MATCH (n:L {prop:42}) OPTIONAL MATCH (m:L {prop:1337}) WITH n RETURN labels(n)" );
executeInThread( "MATCH (n:L {prop:42}) DELETE n" );
// When
executorService.awaitTermination( 3L, TimeUnit.SECONDS );
assertFalse(hasFailed.get());
}
private void executeInThread( final String query )
{
executorService.execute( () ->
{
Result execute = db.execute( query );
try
{
//resultAsString is good test case since it serializes labels, types, properties etc
execute.resultAsString();
}
catch ( Exception e )
{
e.printStackTrace();
hasFailed.set( true );
}
} );
}
}