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CombinedSchemaIndexProviderTest.java
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CombinedSchemaIndexProviderTest.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.schema.combined;
import org.apache.commons.lang3.ArrayUtils;
import org.junit.Rule;
import org.junit.Test;
import org.neo4j.kernel.api.index.InternalIndexState;
import org.neo4j.kernel.api.index.SchemaIndexProvider;
import org.neo4j.kernel.api.schema.index.IndexDescriptor;
import org.neo4j.kernel.api.schema.index.IndexDescriptorFactory;
import org.neo4j.storageengine.api.schema.IndexSample;
import org.neo4j.test.rule.RandomRule;
import org.neo4j.values.storable.Value;
import org.neo4j.values.storable.Values;
import static org.hamcrest.CoreMatchers.containsString;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.fail;
import static org.mockito.Matchers.any;
import static org.mockito.Matchers.anyLong;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;
import static org.neo4j.kernel.impl.index.schema.combined.CombinedSchemaIndexProvider.select;
public class CombinedSchemaIndexProviderTest
{
@Rule
public RandomRule random = new RandomRule();
@Test
public void mustThrowForMixedAndReportCorrectForMatchingInitialState() throws Exception
{
// given
SchemaIndexProvider boostProvider = mock( SchemaIndexProvider.class );
SchemaIndexProvider fallbackProvider = mock( SchemaIndexProvider.class );
CombinedSchemaIndexProvider combinedSchemaIndexProvider = new CombinedSchemaIndexProvider( boostProvider, fallbackProvider );
IndexDescriptor anyIndexDescriptor = IndexDescriptorFactory.forLabel( 0, 0 );
for ( InternalIndexState boostState : InternalIndexState.values() )
{
setInitialState( boostProvider, boostState );
for ( InternalIndexState fallbackState : InternalIndexState.values() )
{
setInitialState( fallbackProvider, fallbackState );
// when
if ( boostState != fallbackState )
{
// then
try
{
combinedSchemaIndexProvider.getInitialState( 0, anyIndexDescriptor );
fail( "Should have failed" );
}
catch ( IllegalStateException e )
{
// good
}
}
else
{
// or then
assertSame( boostState, combinedSchemaIndexProvider.getInitialState( 0, anyIndexDescriptor ) );
}
}
}
}
private void setInitialState( SchemaIndexProvider mockedProvider, InternalIndexState state )
{
when( mockedProvider.getInitialState( anyLong(), any( IndexDescriptor.class ) ) ).thenReturn( state );
}
@Test
public void mustSelectCorrectTargetForAllGivenValueCombinations() throws Exception
{
// given
SchemaIndexProvider boostProvider = mock( SchemaIndexProvider.class );
SchemaIndexProvider fallbackProvider = mock( SchemaIndexProvider.class );
Value[] numberValues = new Value[]
{
Values.byteValue( (byte) 1 ),
Values.shortValue( (short) 2 ),
Values.intValue( 3 ),
Values.longValue( 4 ),
Values.floatValue( 5.6f ),
Values.doubleValue( 7.8 )
};
Value[] otherValues = new Value[]
{
Values.booleanValue( true ),
Values.charValue( 'a' ),
Values.stringValue( "bcd" ),
Values.booleanArray( new boolean[2] ),
Values.byteArray( new byte[2] ),
Values.shortArray( new short[2] ),
Values.intArray( new int[2] ),
Values.longArray( new long[2] ),
Values.floatArray( new float[2] ),
Values.doubleArray( new double[2] ),
Values.charArray( new char[2] ),
Values.stringArray( new String[2] ),
Values.NO_VALUE
};
// Number values should go to boost provider
for ( Value numberValue : numberValues )
{
// when
SchemaIndexProvider selected = select( asArray( numberValue ), boostProvider, fallbackProvider );
// then
assertSame( boostProvider, selected );
}
// Other values should go to fallback provider
for ( Value otherValue : otherValues )
{
// when
SchemaIndexProvider selected = select( asArray( otherValue ), boostProvider, fallbackProvider );
// then
assertSame( fallbackProvider, selected );
}
// All composite values should go to fallback
Value[] allValues = ArrayUtils.addAll( numberValues, otherValues );
for ( Value firstValue : allValues )
{
for ( Value secondValue : allValues )
{
// when
SchemaIndexProvider selected = select( asArray( firstValue, secondValue ), boostProvider, fallbackProvider );
// then
assertSame( fallbackProvider, selected );
}
}
}
private Value[] asArray( Value... items )
{
return items;
}
@Test
public void mustCombineSamples() throws Exception
{
// given
int boostIndexSize = random.nextInt();
int boostUniqueValues = random.nextInt();
int boostSampleSize = random.nextInt();
IndexSample boostSample = new IndexSample( boostIndexSize, boostUniqueValues, boostSampleSize );
int fallbackIndexSize = random.nextInt();
int fallbackUniqueValues = random.nextInt();
int fallbackSampleSize = random.nextInt();
IndexSample fallbackSample = new IndexSample( fallbackIndexSize, fallbackUniqueValues, fallbackSampleSize );
// when
IndexSample combinedSample = CombinedSchemaIndexProvider.combineSamples( boostSample, fallbackSample );
// then
assertEquals( boostIndexSize + fallbackIndexSize, combinedSample.indexSize() );
assertEquals( boostUniqueValues + fallbackUniqueValues, combinedSample.uniqueValues() );
assertEquals( boostSampleSize + fallbackSampleSize, combinedSample.sampleSize() );
}
@Test
public void mustReportPopulationFailure() throws Exception
{
// given
SchemaIndexProvider boostProvider = mock( SchemaIndexProvider.class );
SchemaIndexProvider fallbackProvider = mock( SchemaIndexProvider.class );
CombinedSchemaIndexProvider combinedSchemaIndexProvider = new CombinedSchemaIndexProvider( boostProvider, fallbackProvider );
// when
// ... no failure
when( boostProvider.getPopulationFailure( anyLong() ) ).thenReturn( null );
when( fallbackProvider.getPopulationFailure( anyLong() ) ).thenReturn( null );
// then
assertNull( combinedSchemaIndexProvider.getPopulationFailure( 0 ) );
// when
// ... boost failure
String boostFailure = "boost failure";
when( boostProvider.getPopulationFailure( anyLong() ) ).thenReturn( boostFailure );
when( fallbackProvider.getPopulationFailure( anyLong() ) ).thenReturn( null );
// then
assertEquals( boostFailure, combinedSchemaIndexProvider.getPopulationFailure( 0 ) );
// when
// ... fallback failure
String fallbackFailure = "fallback failure";
when( boostProvider.getPopulationFailure( anyLong() ) ).thenReturn( null );
when( fallbackProvider.getPopulationFailure( anyLong() ) ).thenReturn( fallbackFailure );
// then
assertEquals( fallbackFailure, combinedSchemaIndexProvider.getPopulationFailure( 0 ) );
// when
// ... boost and fallback failure
when( boostProvider.getPopulationFailure( anyLong() ) ).thenReturn( boostFailure );
when( fallbackProvider.getPopulationFailure( anyLong() ) ).thenReturn( fallbackFailure );
// then
String populationFailure = combinedSchemaIndexProvider.getPopulationFailure( 0 );
assertThat( populationFailure, containsString( boostFailure ) );
assertThat( populationFailure, containsString( fallbackFailure ) );
}
}