org.apache.solr.hadoop.LineRandomizerMapperReducerTest.java Source code

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Here is the source code for org.apache.solr.hadoop.LineRandomizerMapperReducerTest.java

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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
 * 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.solr.hadoop;

import java.io.IOException;
import java.util.Arrays;

import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.NullWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mrunit.mapreduce.MapReduceDriver;
import org.apache.hadoop.mrunit.types.Pair;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;

public class LineRandomizerMapperReducerTest extends Assert {

    private MapReduceDriver<LongWritable, Text, LongWritable, Text, Text, NullWritable> mapReduceDriver;

    @Before
    public void setUp() {
        LineRandomizerMapper mapper = new LineRandomizerMapper();
        LineRandomizerReducer reducer = new LineRandomizerReducer();
        mapReduceDriver = MapReduceDriver.newMapReduceDriver(mapper, reducer);
    }

    @Test
    public void testMapReduce1Item() throws IOException {
        mapReduceDriver.withInput(new LongWritable(0), new Text("hello"));
        mapReduceDriver.withOutput(new Text("hello"), NullWritable.get());
        mapReduceDriver.runTest();
    }

    @Test
    public void testMapReduce2Items() throws IOException {
        mapReduceDriver.withAll(Arrays.asList(new Pair<LongWritable, Text>(new LongWritable(0), new Text("hello")),
                new Pair<LongWritable, Text>(new LongWritable(1), new Text("world"))));
        mapReduceDriver
                .withAllOutput(Arrays.asList(new Pair<Text, NullWritable>(new Text("world"), NullWritable.get()),
                        new Pair<Text, NullWritable>(new Text("hello"), NullWritable.get())));
        mapReduceDriver.runTest();
    }

    @Test
    public void testMapReduce3Items() throws IOException {
        mapReduceDriver.withAll(Arrays.asList(new Pair<LongWritable, Text>(new LongWritable(0), new Text("hello")),
                new Pair<LongWritable, Text>(new LongWritable(1), new Text("world")),
                new Pair<LongWritable, Text>(new LongWritable(2), new Text("nadja"))));
        mapReduceDriver
                .withAllOutput(Arrays.asList(new Pair<Text, NullWritable>(new Text("nadja"), NullWritable.get()),
                        new Pair<Text, NullWritable>(new Text("world"), NullWritable.get()),
                        new Pair<Text, NullWritable>(new Text("hello"), NullWritable.get())));
        mapReduceDriver.runTest();
    }

    @Test
    public void testMapReduce4Items() throws IOException {
        mapReduceDriver.withAll(Arrays.asList(new Pair<LongWritable, Text>(new LongWritable(0), new Text("hello")),
                new Pair<LongWritable, Text>(new LongWritable(1), new Text("world")),
                new Pair<LongWritable, Text>(new LongWritable(2), new Text("nadja")),
                new Pair<LongWritable, Text>(new LongWritable(3), new Text("basti"))));
        mapReduceDriver
                .withAllOutput(Arrays.asList(new Pair<Text, NullWritable>(new Text("nadja"), NullWritable.get()),
                        new Pair<Text, NullWritable>(new Text("world"), NullWritable.get()),
                        new Pair<Text, NullWritable>(new Text("basti"), NullWritable.get()),
                        new Pair<Text, NullWritable>(new Text("hello"), NullWritable.get())));
        mapReduceDriver.runTest();
    }

}