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TransactionErrorIT.java
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TransactionErrorIT.java
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/*
* Copyright (c) 2002-2016 "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.server.rest.transactional.integration;
import org.codehaus.jackson.JsonNode;
import org.junit.Test;
import java.io.File;
import java.io.FileOutputStream;
import java.io.PrintStream;
import org.neo4j.kernel.api.exceptions.Status;
import org.neo4j.server.rest.AbstractRestFunctionalTestBase;
import org.neo4j.test.server.HTTP;
import static org.hamcrest.CoreMatchers.equalTo;
import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.junit.Assert.assertTrue;
import static org.neo4j.kernel.api.exceptions.Status.Request.InvalidFormat;
import static org.neo4j.kernel.api.exceptions.Status.Statement.SyntaxError;
import static org.neo4j.server.rest.transactional.integration.TransactionMatchers.containsNoStackTraces;
import static org.neo4j.server.rest.transactional.integration.TransactionMatchers.hasErrors;
import static org.neo4j.test.server.HTTP.POST;
import static org.neo4j.test.server.HTTP.RawPayload.quotedJson;
import static org.neo4j.test.server.HTTP.RawPayload.rawPayload;
/**
* Tests for error messages and graceful handling of problems with the transactional endpoint.
*/
public class TransactionErrorIT extends AbstractRestFunctionalTestBase
{
@Test
public void begin__commit_with_invalid_cypher() throws Exception
{
long nodesInDatabaseBeforeTransaction = countNodes();
// begin
HTTP.Response response = POST( txUri(), quotedJson( "{ 'statements': [ { 'statement': 'CREATE (n)' } ] }" ) );
String commitResource = response.stringFromContent( "commit" );
// commit with invalid cypher
response = POST( commitResource, quotedJson( "{ 'statements': [ { 'statement': 'CREATE ;;' } ] }" ) );
assertThat( response.status(), is( 200 ) );
assertThat( response, hasErrors( SyntaxError ) );
assertThat( response, containsNoStackTraces());
assertThat( countNodes(), equalTo( nodesInDatabaseBeforeTransaction ) );
}
@Test
public void begin__commit_with_malformed_json() throws Exception
{
long nodesInDatabaseBeforeTransaction = countNodes();
// begin
HTTP.Response begin = POST( txUri(), quotedJson( "{ 'statements': [ { 'statement': 'CREATE (n)' } ] }" ) );
String commitResource = begin.stringFromContent( "commit" );
// commit with malformed json
HTTP.Response response = POST( commitResource, rawPayload( "[{asd,::}]" ) );
assertThat( response.status(), is( 200 ) );
assertThat( response, hasErrors( InvalidFormat ) );
assertThat( countNodes(), equalTo( nodesInDatabaseBeforeTransaction ) );
}
@SuppressWarnings("ResultOfMethodCallIgnored")
@Test
public void begin_and_execute_periodic_commit_that_fails() throws Exception
{
File file = File.createTempFile("begin_and_execute_periodic_commit_that_fails", ".csv").getAbsoluteFile();
try
{
PrintStream out = new PrintStream( new FileOutputStream( file ) );
out.println("1");
out.println("2");
out.println("0");
out.println("3");
out.close();
String url = file.toURI().toURL().toString().replace("\\", "\\\\");
String query = "USING PERIODIC COMMIT 1 LOAD CSV FROM \\\"" + url + "\\\" AS line CREATE ({name: 1/toInt(line[0])});";
// begin and execute and commit
HTTP.RawPayload payload = quotedJson("{ 'statements': [ { 'statement': '" + query + "' } ] }");
HTTP.Response response = POST( txCommitUri(), payload);
assertThat( response.status(), equalTo( 200 ) );
assertThat( response, hasErrors(Status.Statement.ArithmeticError) );
JsonNode message = response.get( "errors" ).get( 0 ).get( "message" );
assertTrue("Expected LOAD CSV line number information",
message
.toString()
.contains("on line 3. Possibly the last row committed during import is line 2. Note that this information might not be accurate."));
}
finally {
file.delete();
}
}
private long countNodes()
{
return TransactionMatchers.countNodes( graphdb() );
}
}