/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.giraph.io;
import java.io.IOException;
import java.util.ArrayList;
import org.apache.giraph.conf.GiraphConfiguration;
import org.apache.giraph.conf.ImmutableClassesGiraphConfiguration;
import org.apache.giraph.graph.Vertex;
import org.apache.giraph.io.formats.IdWithValueTextOutputFormat;
import org.apache.giraph.utils.NoOpComputation;
import org.apache.hadoop.io.DoubleWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.io.Writable;
import org.apache.hadoop.mapreduce.RecordWriter;
import org.apache.hadoop.mapreduce.TaskAttemptContext;
import org.junit.Before;
import org.junit.Test;
import static org.mockito.Mockito.*;
public class TestIdWithValueTextOutputFormat extends
IdWithValueTextOutputFormat<Text, DoubleWritable, Writable> {
/** Test configuration */
private ImmutableClassesGiraphConfiguration<
Text, DoubleWritable, Writable> conf;
/**
* Dummy class to allow ImmutableClassesGiraphConfiguration to be created.
*/
public static class DummyComputation extends NoOpComputation<Text,
DoubleWritable, DoubleWritable, DoubleWritable> { }
@Before
public void setUp() {
GiraphConfiguration giraphConfiguration = new GiraphConfiguration();
giraphConfiguration.setComputationClass(DummyComputation.class);
conf = new ImmutableClassesGiraphConfiguration<Text, DoubleWritable,
Writable>(giraphConfiguration);
}
@Test
public void testHappyPath() throws IOException, InterruptedException {
Text expected = new Text("Four Tops\t4.0");
IdWithValueTestWorker(expected);
}
@Test
public void testReverseIdAndValue() throws IOException, InterruptedException {
conf.setBoolean(REVERSE_ID_AND_VALUE, true);
Text expected = new Text("4.0\tFour Tops");
IdWithValueTestWorker(expected);
}
@Test
public void testWithDifferentDelimiter() throws IOException,
InterruptedException {
conf.set(LINE_TOKENIZE_VALUE, "blah");
Text expected = new Text("Four Topsblah4.0");
IdWithValueTestWorker(expected);
}
private void IdWithValueTestWorker(Text expected)
throws IOException, InterruptedException {
TaskAttemptContext tac = mock(TaskAttemptContext.class);
when(tac.getConfiguration()).thenReturn(conf);
Vertex vertex = mock(Vertex.class);
when(vertex.getId()).thenReturn(new Text("Four Tops"));
when(vertex.getValue()).thenReturn(new DoubleWritable(4d));
// Create empty iterator == no edges
when(vertex.getEdges()).thenReturn(new ArrayList<Text>());
final RecordWriter<Text, Text> tw = mock(RecordWriter.class);
IdWithValueVertexWriter writer = new IdWithValueVertexWriter() {
@Override
protected RecordWriter<Text, Text> createLineRecordWriter(
TaskAttemptContext context) throws IOException, InterruptedException {
return tw;
}
};
writer.setConf(conf);
writer.initialize(tac);
writer.writeVertex(vertex);
verify(tw).write(expected, null);
verify(vertex, times(0)).getEdges();
}
}