/*
* Copyright (c) 2002-2017 "Neo Technology,"
* Network Engine for Objects in Lund AB [http://neotechnology.com]
*
* This file is part of Neo4j.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.neo4j.driver.internal;
import org.junit.Test;
import java.util.Arrays;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.NoSuchElementException;
import org.neo4j.driver.internal.util.Extract;
import org.neo4j.driver.internal.value.NullValue;
import org.neo4j.driver.v1.Value;
import org.neo4j.driver.v1.util.Function;
import static org.hamcrest.CoreMatchers.equalTo;
import static org.hamcrest.Matchers.contains;
import static org.hamcrest.Matchers.containsInAnyOrder;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import static org.neo4j.driver.v1.Values.value;
public class InternalRecordTest
{
@Test
public void accessingUnknownKeyShouldBeNull()
{
InternalRecord record = createRecord();
assertThat( record.get( "k1" ), equalTo( value( 0 ) ) );
assertThat( record.get( "k2" ), equalTo( value( 1 ) ) );
assertThat( record.get( "k3" ), equalTo( NullValue.NULL ) );
}
@Test
public void shouldHaveCorrectSize()
{
InternalRecord record = createRecord();
assertThat( record.size(), equalTo( 2 ) );
}
@Test
public void shouldHaveCorrectFieldIndices()
{
InternalRecord record = createRecord();
assertThat( record.index( "k1" ), equalTo( 0 ) );
assertThat( record.index( "k2" ), equalTo( 1 ) );
}
@Test
public void shouldThrowWhenAskingForIndexOfUnknownField()
{
InternalRecord record = createRecord();
try
{
record.index( "BATMAN" );
fail( "Expected NoSuchElementException to be thrown" );
}
catch ( NoSuchElementException e )
{
// yay
}
}
@Test
public void accessingOutOfBoundsShouldBeNull()
{
InternalRecord record = createRecord();
assertThat( record.get( 0 ), equalTo( value( 0 ) ) );
assertThat( record.get( 1 ), equalTo( value( 1 ) ) );
assertThat( record.get( 2 ), equalTo( NullValue.NULL ) );
assertThat( record.get( -37 ), equalTo( NullValue.NULL ) );
}
@Test
public void testContainsKey()
{
InternalRecord record = createRecord();
assertTrue( record.containsKey( "k1" ) );
assertTrue( record.containsKey( "k2" ) );
assertFalse( record.containsKey( "k3" ) );
}
@Test
public void testIndex()
{
InternalRecord record = createRecord();
assertThat( record.index( "k1" ), equalTo( 0 ) );
assertThat( record.index( "k2" ), equalTo( 1 ) );
}
@Test
public void testAsMap()
{
// GIVEN
InternalRecord record = createRecord();
// WHEN
Map<String,Object> map = record.asMap();
// THEN
assertThat( map.keySet(), containsInAnyOrder( "k1", "k2" ) );
assertThat( map.get( "k1" ), equalTo( (Object)0L ) );
assertThat( map.get( "k2" ), equalTo( (Object)1L ) );
}
@Test
public void testMapExtraction()
{
// GIVEN
InternalRecord record = createRecord();
Function<Value,Integer> addOne = new Function<Value,Integer>()
{
@Override
public Integer apply( Value value )
{
return value.asInt() + 1;
}
};
// WHEN
Map<String,Integer> map = Extract.map( record, addOne );
// THEN
assertThat( map.keySet(), contains( "k1", "k2" ) );
assertThat( map.get( "k1" ), equalTo( 1 ) );
assertThat( map.get( "k2" ), equalTo( 2 ) );
}
@Test
public void mapExtractionShouldPreserveIterationOrder()
{
// GIVEN
List<String> keys = Arrays.asList( "k2", "k1" );
InternalRecord record = new InternalRecord( keys, new Value[]{value( 0 ), value( 1 )} );
Function<Value,Integer> addOne = new Function<Value,Integer>()
{
@Override
public Integer apply( Value value )
{
return value.asInt() + 1;
}
};
// WHEN
Map<String,Integer> map = Extract.map( record, addOne );
// THEN
assertThat( map.keySet(), contains( "k2", "k1" ) );
Iterator<Integer> values = map.values().iterator();
assertThat( values.next(), equalTo( 1 ) );
assertThat( values.next(), equalTo( 2 ) );
}
@Test
public void testToString()
{
InternalRecord record = createRecord();
assertThat( record.toString(), equalTo( "Record<{k1: 0, k2: 1}>" ) );
}
@Test
public void shouldHaveMethodToGetKeys()
{
//GIVEN
List<String> keys = Arrays.asList( "k2", "k1" );
InternalRecord record = new InternalRecord( keys, new Value[]{value( 0 ), value( 1 )} );
//WHEN
List<String> appendedKeys = record.keys();
//THEN
assertThat( appendedKeys, equalTo( keys ) );
}
@Test
public void emptyKeysShouldGiveEmptyList()
{
//GIVEN
List<String> keys = Collections.emptyList();
InternalRecord record = new InternalRecord( keys, new Value[]{} );
//WHEN
List<String> appendedKeys = record.keys();
//THEN
assertThat( appendedKeys, equalTo( keys ) );
}
@Test
public void shouldHaveMethodToGetValues()
{
//GIVEN
List<String> keys = Arrays.asList( "k2", "k1" );
Value[] values = new Value[]{value( 0 ), value( 1 )};
InternalRecord record = new InternalRecord( keys, values );
//WHEN
List<Value> appendedValues = record.values();
//THEN
assertThat( appendedValues, equalTo( Arrays.asList( values ) ) );
}
@Test
public void emptyValuesShouldGiveEmptyList()
{
//GIVEN
List<String> keys = Collections.emptyList();
Value[] values = new Value[]{};
InternalRecord record = new InternalRecord( keys, values );
//WHEN
List<Value> appendedValues = record.values();
//THEN
assertThat( appendedValues, equalTo( Arrays.asList( values ) ) );
}
private InternalRecord createRecord()
{
List<String> keys = Arrays.asList( "k1", "k2" );
return new InternalRecord( keys, new Value[]{value( 0 ), value( 1 )} );
}
}