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OperationsLockTest.java
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OperationsLockTest.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.newapi;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import java.util.Iterator;
import java.util.Optional;
import org.neo4j.internal.kernel.api.LabelSet;
import org.neo4j.internal.kernel.api.Write;
import org.neo4j.internal.kernel.api.exceptions.InvalidTransactionTypeKernelException;
import org.neo4j.internal.kernel.api.exceptions.explicitindex.AutoIndexingKernelException;
import org.neo4j.kernel.api.exceptions.EntityNotFoundException;
import org.neo4j.kernel.api.explicitindex.AutoIndexOperations;
import org.neo4j.kernel.api.explicitindex.AutoIndexing;
import org.neo4j.kernel.api.txstate.TransactionState;
import org.neo4j.kernel.impl.api.KernelTransactionImplementation;
import org.neo4j.kernel.impl.api.state.TxState;
import org.neo4j.kernel.impl.locking.LockTracer;
import org.neo4j.kernel.impl.locking.Locks;
import org.neo4j.kernel.impl.locking.ResourceTypes;
import org.neo4j.kernel.impl.locking.SimpleStatementLocks;
import org.neo4j.storageengine.api.StorageProperty;
import org.neo4j.storageengine.api.StorageStatement;
import org.neo4j.values.storable.Value;
import org.neo4j.values.storable.Values;
import static org.hamcrest.CoreMatchers.equalTo;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.contains;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.never;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
public class OperationsLockTest
{
private KernelTransactionImplementation transaction = mock( KernelTransactionImplementation.class );
private Operations operations;
private final Locks.Client locks = mock( Locks.Client.class );
private final Write write = mock( Write.class );
private NodeCursor nodeCursor;
private PropertyCursor propertyCursor;
private TransactionState txState;
private AllStoreHolder allStoreHolder;
@Before
public void setUp() throws InvalidTransactionTypeKernelException
{
txState = new TxState();
when( transaction.getReasonIfTerminated() ).thenReturn( Optional.empty() );
when( transaction.locks() ).thenReturn( new SimpleStatementLocks( locks ) );
when( transaction.dataWrite() ).thenReturn( write );
when( transaction.isOpen() ).thenReturn( true );
when( transaction.lockTracer() ).thenReturn( LockTracer.NONE );
when( transaction.txState() ).thenReturn( txState );
Cursors cursors = mock( Cursors.class );
nodeCursor = mock( NodeCursor.class );
propertyCursor = mock( PropertyCursor.class );
when( cursors.allocateNodeCursor() ).thenReturn( nodeCursor );
when( cursors.allocatePropertyCursor() ).thenReturn( propertyCursor );
AutoIndexing autoindexing = mock( AutoIndexing.class );
when( autoindexing.nodes() ).thenReturn( mock( AutoIndexOperations.class ) );
allStoreHolder = mock( AllStoreHolder.class );
operations = new Operations( allStoreHolder, mock( IndexTxStateUpdater.class ),
mock( StorageStatement.class ), transaction, cursors, autoindexing );
operations.initialize();
}
@After
public void tearDown()
{
operations.release();
}
@Test
public void shouldAcquireEntityWriteLockBeforeAddingLabelToNode() throws Exception
{
// given
when( nodeCursor.next() ).thenReturn( true );
when( nodeCursor.labels() ).thenReturn( LabelSet.NONE );
// when
operations.nodeAddLabel( 123L, 456 );
// then
verify( locks ).acquireExclusive( LockTracer.NONE, ResourceTypes.NODE, 123L );
assertThat( txState.getNodeState( 123L ).labelDiffSets().getAdded(), contains( 456 ) );
}
@Test
public void shouldNotAcquireEntityWriteLockBeforeAddingLabelToJustCreatedNode() throws Exception
{
// given
when( nodeCursor.next() ).thenReturn( true );
when( nodeCursor.labels() ).thenReturn( LabelSet.NONE );
when( transaction.hasTxStateWithChanges() ).thenReturn( true );
// when
txState.nodeDoCreate( 123 );
operations.nodeAddLabel( 123, 456 );
// then
verify( locks, never() ).acquireExclusive( LockTracer.NONE, ResourceTypes.NODE, 123 );
}
@Test
public void shouldAcquireSchemaReadLockBeforeAddingLabelToNode() throws Exception
{
// given
when( nodeCursor.next() ).thenReturn( true );
when( nodeCursor.labels() ).thenReturn( LabelSet.NONE );
// when
int labelId = 456;
operations.nodeAddLabel( 123, labelId );
// then
verify( locks ).acquireShared( LockTracer.NONE, ResourceTypes.LABEL, labelId );
assertThat( txState.getNodeState( 123L ).labelDiffSets().getAdded(), contains( 456 ) );
}
@Test
public void shouldAcquireEntityWriteLockBeforeSettingPropertyOnNode() throws Exception
{
// given
when( nodeCursor.next() ).thenReturn( true );
when( nodeCursor.labels() ).thenReturn( LabelSet.NONE );
int propertyKeyId = 8;
Value value = Values.of( 9 );
when( propertyCursor.next() ).thenReturn( true );
when( propertyCursor.propertyKey() ).thenReturn( propertyKeyId );
when( propertyCursor.propertyValue() ).thenReturn( Values.NO_VALUE );
// when
operations.nodeSetProperty( 123, propertyKeyId, value );
// then
verify( locks ).acquireExclusive( LockTracer.NONE, ResourceTypes.NODE, 123 );
Iterator<StorageProperty> properties = txState.getNodeState( 123L ).addedProperties();
assertThat( properties.next().propertyKeyId(), equalTo( propertyKeyId ) );
assertThat( properties.hasNext(), equalTo( false ) );
}
@Test
public void shouldNotAcquireEntityWriteLockBeforeSettingPropertyOnJustCreatedNode() throws Exception
{
// given
when( nodeCursor.next() ).thenReturn( true );
when( nodeCursor.labels() ).thenReturn( LabelSet.NONE );
when( transaction.hasTxStateWithChanges() ).thenReturn( true );
txState.nodeDoCreate( 123 );
int propertyKeyId = 8;
Value value = Values.of( 9 );
// when
operations.nodeSetProperty( 123, propertyKeyId, value );
// then
verify( locks, never() ).acquireExclusive( LockTracer.NONE, ResourceTypes.NODE, 123 );
Iterator<StorageProperty> properties = txState.getNodeState( 123L ).addedProperties();
assertThat( properties.next().propertyKeyId(), equalTo( propertyKeyId ) );
assertThat( properties.hasNext(), equalTo( false ) );
}
@Test
public void shouldAcquireEntityWriteLockBeforeDeletingNode()
throws EntityNotFoundException, AutoIndexingKernelException, InvalidTransactionTypeKernelException
{
// GIVEN
when( nodeCursor.next() ).thenReturn( true );
when( nodeCursor.labels() ).thenReturn( LabelSet.NONE );
when( allStoreHolder.nodeExistsInStore( 123 ) ).thenReturn( true );
// WHEN
operations.nodeDelete( 123 );
//THEN
verify( locks ).acquireExclusive( LockTracer.NONE, ResourceTypes.NODE, 123 );
assertThat( txState.nodeIsDeletedInThisTx( 123 ), equalTo( true ) );
}
@Test
public void shouldNotAcquireEntityWriteLockBeforeDeletingJustCreatedNode() throws Exception
{
// THEN
txState.nodeDoCreate( 123 );
when( transaction.hasTxStateWithChanges() ).thenReturn( true );
// WHEN
operations.nodeDelete( 123 );
//THEN
verify( locks, never() ).acquireExclusive( LockTracer.NONE, ResourceTypes.NODE, 123 );
assertThat( txState.nodeIsDeletedInThisTx( 123 ), equalTo( true ) );
}
}