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LabelIT.java
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LabelIT.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.api.integrationtest;
import org.junit.Test;
import java.util.Iterator;
import org.neo4j.internal.kernel.api.NamedToken;
import org.neo4j.internal.kernel.api.Write;
import org.neo4j.kernel.api.KernelTransaction;
import org.neo4j.kernel.api.security.AnonymousContext;
import static org.hamcrest.core.IsCollectionContaining.hasItems;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.assertTrue;
import static org.neo4j.helpers.collection.Iterators.asCollection;
public class LabelIT extends KernelIntegrationTest
{
@Test
public void shouldListAllLabels() throws Exception
{
// given
KernelTransaction transaction = newTransaction( AnonymousContext.writeToken() );
int label1Id = transaction.tokenWrite().labelGetOrCreateForName( "label1" );
int label2Id = transaction.tokenWrite().labelGetOrCreateForName( "label2" );
// when
Iterator<NamedToken> labelIdsBeforeCommit = transaction.tokenRead().labelsGetAllTokens();
// then
assertThat( asCollection( labelIdsBeforeCommit ),
hasItems( new NamedToken( "label1", label1Id ), new NamedToken( "label2", label2Id ) ) );
// when
commit();
transaction = newTransaction();
Iterator<NamedToken> labelIdsAfterCommit = transaction.tokenRead().labelsGetAllTokens();
// then
assertThat( asCollection( labelIdsAfterCommit ),
hasItems( new NamedToken( "label1", label1Id ), new NamedToken( "label2", label2Id ) ) );
commit();
}
@Test
public void addingAndRemovingLabelInSameTxShouldHaveNoEffect() throws Exception
{
// Given a node with a label
KernelTransaction transaction = newTransaction( AnonymousContext.writeToken() );
int label = transaction.tokenWrite().labelGetOrCreateForName( "Label 1" );
long node = transaction.dataWrite().nodeCreate();
transaction.dataWrite().nodeAddLabel( node, label );
commit();
// When I add and remove that label in the same tx
Write write = dataWriteInNewTransaction();
write.nodeRemoveLabel( node, label );
write.nodeAddLabel( node, label );
// Then commit should not throw exceptions
commit();
// And then the node should have the label
assertTrue( nodeHasLabel( newTransaction(), node, label ) );
commit();
}
}