com.avira.couchdoop.AppTest.java Source code

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Here is the source code for com.avira.couchdoop.AppTest.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 com.avira.couchdoop;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Mapper;
import org.apache.hadoop.mapreduce.Reducer;
import org.apache.hadoop.mrunit.mapreduce.MapDriver;
import org.apache.hadoop.mrunit.mapreduce.MapReduceDriver;
import org.apache.hadoop.mrunit.mapreduce.ReduceDriver;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Unit com.avira.bdo.chc.test for simple App.
 */
public class AppTest {

    MapDriver<LongWritable, Text, LongWritable, Text> mapDriver;
    ReduceDriver<LongWritable, Text, LongWritable, Text> combineDriver;
    ReduceDriver<LongWritable, Text, LongWritable, Text> reduceDriver;
    MapReduceDriver<LongWritable, Text, LongWritable, Text, LongWritable, Text> mrDriver;

    @SuppressWarnings("unused")
    private static final Logger LOGGER = LoggerFactory.getLogger(AppTest.class);

    @Before
    public void setUp() {
        // Setup mapper.
        Mapper<LongWritable, Text, LongWritable, Text> mapper = new Mapper<LongWritable, Text, LongWritable, Text>();
        mapDriver = MapDriver.newMapDriver(mapper);

        // Setup combiner.
        Reducer<LongWritable, Text, LongWritable, Text> combiner = new Reducer<LongWritable, Text, LongWritable, Text>();
        combineDriver = ReduceDriver.newReduceDriver(combiner);

        // Setup reducer.
        Reducer<LongWritable, Text, LongWritable, Text> reducer = new Reducer<LongWritable, Text, LongWritable, Text>();
        reduceDriver = ReduceDriver.newReduceDriver(reducer);

        // Setup MapReduce job.
        mrDriver = MapReduceDriver.newMapReduceDriver(mapper, reducer, combiner);
    }

    @Test
    public void testMapper() throws IOException {
        // Inputs
        mapDriver.addInput(new LongWritable(0L), new Text("Mary had a little lamb,"));
        mapDriver.addInput(new LongWritable(24L), new Text("Little lamb, little lamb."));

        // Outputs
        mapDriver.addOutput(new LongWritable(0L), new Text("Mary had a little lamb,"));
        mapDriver.addOutput(new LongWritable(24L), new Text("Little lamb, little lamb."));

        mapDriver.runTest();
    }

    @Test
    public void testReducer() throws IOException {
        // Inputs
        List<Text> values = new ArrayList<Text>();
        values.add(new Text("Mary had a little lamb,"));
        values.add(new Text("Little lamb, little lamb."));
        reduceDriver.addInput(new LongWritable(10L), values);

        // Outputs
        reduceDriver.addOutput(new LongWritable(10L), new Text("Mary had a little lamb,"));
        reduceDriver.addOutput(new LongWritable(10L), new Text("Little lamb, little lamb."));

        reduceDriver.runTest();
    }

    @Test
    public void testJob() throws IOException {
        // Inputs
        mrDriver.addInput(new LongWritable(0L), new Text("Mary had a little lamb,"));
        mrDriver.addInput(new LongWritable(24L), new Text("Little lamb, little lamb."));

        // Outputs
        mrDriver.addOutput(new LongWritable(0L), new Text("Mary had a little lamb,"));
        mrDriver.addOutput(new LongWritable(24L), new Text("Little lamb, little lamb."));

        mrDriver.runTest();
    }

    @After
    public void tearDown() {

    }
}