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* 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
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*/
package org.apache.giraph.examples;
import static org.junit.Assert.assertEquals;
import org.apache.giraph.combiner.MessageCombiner;
import org.apache.giraph.combiner.MinimumIntMessageCombiner;
import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.WritableComparable;
import org.junit.Test;
public class MinimumIntCombinerTest {
@Test
public void testCombiner() throws Exception {
MessageCombiner<WritableComparable, IntWritable>
messageCombiner =
new MinimumIntMessageCombiner();
IntWritable vertexId = new IntWritable(1);
IntWritable result = messageCombiner.createInitialMessage();
messageCombiner.combine(vertexId, result, new IntWritable(39947466));
messageCombiner.combine(vertexId, result, new IntWritable(199));
messageCombiner.combine(vertexId, result, new IntWritable(42));
messageCombiner.combine(vertexId, result, new IntWritable(19998888));
assertEquals(42, result.get());
}
}