/*
 * 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.examples;

import static org.junit.Assert.assertEquals;

import org.apache.giraph.combiner.Combiner;
import org.apache.giraph.combiner.MinimumIntCombiner;
import org.apache.hadoop.io.IntWritable;
import org.junit.Test;

public class MinimumIntCombinerTest {

  @Test
  public void testCombiner() throws Exception {
    Combiner<IntWritable, IntWritable> combiner =
        new MinimumIntCombiner();

    IntWritable vertexId = new IntWritable(1);
    IntWritable result = combiner.createInitialMessage();
    combiner.combine(vertexId, result, new IntWritable(39947466));
    combiner.combine(vertexId, result, new IntWritable(199));
    combiner.combine(vertexId, result, new IntWritable(42));
    combiner.combine(vertexId, result, new IntWritable(19998888));
    assertEquals(42, result.get());
  }
}