1/*2 * Licensed to the Apache Software Foundation (ASF) under one3 * or more contributor license agreements. See the NOTICE file4 * distributed with this work for additional information5 * regarding copyright ownership. The ASF licenses this file6 * to you under the Apache License, Version 2.0 (the7 * "License"); you may not use this file except in compliance8 * with the License. You may obtain a copy of the License at9 *10 * http://www.apache.org/licenses/LICENSE-2.011 *12 * Unless required by applicable law or agreed to in writing, software13 * distributed under the License is distributed on an "AS IS" BASIS,14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.15 * See the License for the specific language governing permissions and16 * limitations under the License.17 */1819package org.apache.giraph.examples;
2021importstatic org.junit.Assert.assertEquals;
2223import org.apache.giraph.combiner.MessageCombiner;
24import org.apache.giraph.combiner.MinimumIntMessageCombiner;
25import org.apache.hadoop.io.IntWritable;
26import org.apache.hadoop.io.WritableComparable;
27import org.junit.Test;
2829publicclassMinimumIntCombinerTest {
3031 @Test
32publicvoid testCombiner() throws Exception {
33 MessageCombiner<WritableComparable, IntWritable>
34 messageCombiner =
35new MinimumIntMessageCombiner();
3637 IntWritable vertexId = new IntWritable(1);
38 IntWritable result = messageCombiner.createInitialMessage();
39 messageCombiner.combine(vertexId, result, new IntWritable(39947466));
40 messageCombiner.combine(vertexId, result, new IntWritable(199));
41 messageCombiner.combine(vertexId, result, new IntWritable(42));
42 messageCombiner.combine(vertexId, result, new IntWritable(19998888));
43 assertEquals(42, result.get());
44 }
45 }