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keys should never return null #101

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Merged
merged 1 commit into from
Dec 18, 2015
Merged

keys should never return null #101

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9 changes: 5 additions & 4 deletions driver/src/main/java/org/neo4j/driver/internal/summary/ResultBuilder.java
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Original file line number Diff line number Diff line change
Expand Up @@ -39,16 +39,17 @@
import org.neo4j.driver.v1.exceptions.ClientException;

import static java.util.Collections.unmodifiableMap;

import static org.neo4j.driver.internal.ParameterSupport.NO_PARAMETERS;

public class ResultBuilder implements StreamCollector
{
private final static List<String> NO_KEYS = new ArrayList<>();

private final SummaryBuilder summaryBuilder;

private List<Record> body = new ArrayList<>();
private List<String> keys = null;
private Map<String, Integer> keyIndexLookup = null;
private List<String> keys = NO_KEYS;
private Map<String,Integer> keyIndexLookup = null;

public ResultBuilder( String statement, Map<String, Value> parameters )
{
Expand All @@ -60,7 +61,7 @@ public ResultBuilder( String statement, Map<String, Value> parameters )
@Override
public void keys( String[] names )
{
if ( keys == null )
if ( keys == NO_KEYS )
{
int numFields = names.length;
if ( numFields == 0 )
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30 changes: 30 additions & 0 deletions driver/src/test/java/org/neo4j/driver/internal/InternalSessionTest.java
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Expand Up @@ -78,4 +78,34 @@ public void shouldBeAbleToOpenTxAfterPreviousIsClosed() throws Throwable
// Then we should've gotten a transaction object back
assertNotNull( tx );
}

@Test
public void shouldNotBeAbleToUseSessionWhileOngoingTransaction() throws Throwable
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@pontusmelke pontusmelke Dec 18, 2015

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These two tests has nothing to do with the fix, I just thought they were missing.

{
// Given
Connection mock = mock( Connection.class );
InternalSession sess = new InternalSession( mock );
sess.beginTransaction();

// Expect
exception.expect( ClientException.class );

// When
sess.run( "whatever" );
}

@Test
public void shouldBeAbleToUseSessionAgainWhenTransactionIsClosed() throws Throwable
{
// Given
Connection mock = mock( Connection.class );
InternalSession sess = new InternalSession( mock );
sess.beginTransaction().close();

// When
sess.run( "whatever" );

// Then
verify( mock ).sync();
}
}
12 changes: 11 additions & 1 deletion driver/src/test/java/org/neo4j/driver/v1/integration/ResultStreamIT.java
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Expand Up @@ -26,9 +26,9 @@
import org.neo4j.driver.v1.util.TestNeo4jSession;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;

import static org.neo4j.driver.v1.Values.parameters;

public class ResultStreamIT
Expand Down Expand Up @@ -109,4 +109,14 @@ public void shouldGiveHelpfulFailureMessageWhenAccessNonExistingPropertyOnNode()
// Then
assertTrue( rs.value( "n" ).value( "age" ).isNull() );
}

@Test
public void shouldNotReturnNullKeysOnEmptyResult()
{
// Given
ResultCursor rs = session.run( "CREATE (n:Person {name:{name}})", parameters( "name", "Tom Hanks" ) );

// THEN
assertNotNull( rs.keys() );
}
}