/*
    * 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,
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   * See the License for the specific language governing permissions and
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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());
    }
  }