co.nubetech.hiho.dedup.TestDedupKeyReducer.java Source code

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Here is the source code for co.nubetech.hiho.dedup.TestDedupKeyReducer.java

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/**
 * Copyright 2011 Nube Technologies
 *
 * Licensed 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 co.nubetech.hiho.dedup;

import static org.junit.Assert.assertEquals;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

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

import org.apache.hadoop.io.BytesWritable;
import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Counter;
import org.apache.hadoop.mapreduce.Counters;
import org.apache.hadoop.mapreduce.Reducer;
import org.junit.Test;

public class TestDedupKeyReducer {

    @Test
    public void testReducerValidValues() throws IOException, InterruptedException {
        Text key = new Text("key123");
        HihoTuple hihoTuple = new HihoTuple();
        hihoTuple.setKey(key);

        String value1 = new String("value1");
        String value2 = new String("value2");
        String value3 = new String("value3");
        ArrayList<String> values = new ArrayList<String>();
        values.add(value1);
        values.add(value2);
        values.add(value3);

        Reducer.Context context = mock(Reducer.Context.class);
        Counters counters = new Counters();
        Counter counter = counters.findCounter(DedupRecordCounter.OUTPUT);
        when(context.getCounter(DedupRecordCounter.OUTPUT)).thenReturn(counter);
        DedupKeyReducer dedupReducer = new DedupKeyReducer();
        dedupReducer.reduce(hihoTuple, values, context);
        verify(context).write(key, value1);
        assertEquals(1, context.getCounter(DedupRecordCounter.OUTPUT).getValue());
    }

    @Test
    public void testReducerForLongWritableKey() throws IOException, InterruptedException {
        LongWritable key = new LongWritable(Long.parseLong("123"));
        HihoTuple hihoTuple = new HihoTuple();
        hihoTuple.setKey(key);

        Text value1 = new Text("value1");
        ArrayList<Text> values = new ArrayList<Text>();
        values.add(value1);

        Reducer.Context context = mock(Reducer.Context.class);
        Counters counters = new Counters();
        Counter counter = counters.findCounter(DedupRecordCounter.OUTPUT);
        when(context.getCounter(DedupRecordCounter.OUTPUT)).thenReturn(counter);
        DedupKeyReducer dedupReducer = new DedupKeyReducer();
        dedupReducer.reduce(hihoTuple, values, context);
        verify(context).write(key, value1);
        assertEquals(1, context.getCounter(DedupRecordCounter.OUTPUT).getValue());
    }

    @Test
    public void testReducerForBytesWritableKeyAndValue() throws IOException, InterruptedException {
        BytesWritable key = new BytesWritable("abc123".getBytes());
        HihoTuple hihoTuple = new HihoTuple();
        hihoTuple.setKey(key);

        BytesWritable value1 = new BytesWritable("value1".getBytes());
        ArrayList<BytesWritable> values = new ArrayList<BytesWritable>();
        values.add(value1);

        Reducer.Context context = mock(Reducer.Context.class);
        Counters counters = new Counters();
        Counter counter = counters.findCounter(DedupRecordCounter.OUTPUT);
        when(context.getCounter(DedupRecordCounter.OUTPUT)).thenReturn(counter);
        DedupKeyReducer dedupReducer = new DedupKeyReducer();
        dedupReducer.reduce(hihoTuple, values, context);
        verify(context).write(key, value1);
        assertEquals(1, context.getCounter(DedupRecordCounter.OUTPUT).getValue());
    }

    @Test
    public void testReducerForIntWritableKeyAndValue() throws IOException, InterruptedException {
        IntWritable key = new IntWritable(123);
        HihoTuple hihoTuple = new HihoTuple();
        hihoTuple.setKey(key);

        IntWritable value1 = new IntWritable(456);
        ArrayList<IntWritable> values = new ArrayList<IntWritable>();
        values.add(value1);

        Reducer.Context context = mock(Reducer.Context.class);
        Counters counters = new Counters();
        Counter counter = counters.findCounter(DedupRecordCounter.OUTPUT);
        when(context.getCounter(DedupRecordCounter.OUTPUT)).thenReturn(counter);
        DedupKeyReducer dedupReducer = new DedupKeyReducer();
        dedupReducer.reduce(hihoTuple, values, context);
        verify(context).write(key, value1);
        assertEquals(1, context.getCounter(DedupRecordCounter.OUTPUT).getValue());
    }

    @Test
    public void testReducerForNullValues() throws IOException, InterruptedException {
        Text key = new Text("key123");
        HihoTuple hihoTuple = new HihoTuple();
        hihoTuple.setKey(key);

        String value1 = null;
        ArrayList<String> values = new ArrayList<String>();
        values.add(value1);

        Reducer.Context context = mock(Reducer.Context.class);
        Counters counters = new Counters();
        Counter counter = counters.findCounter(DedupRecordCounter.OUTPUT);
        when(context.getCounter(DedupRecordCounter.OUTPUT)).thenReturn(counter);
        DedupKeyReducer dedupReducer = new DedupKeyReducer();
        dedupReducer.reduce(hihoTuple, values, context);
        verify(context).write(key, value1);
        assertEquals(1, context.getCounter(DedupRecordCounter.OUTPUT).getValue());
    }

}