mrunit for wordcount demo

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

import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mrunit.mapreduce.MapDriver;
import org.apache.hadoop.mrunit.types.Pair;
import org.junit.Test;

public class wordcountest {

    @SuppressWarnings({ "rawtypes", "unchecked" })
    @Test
    public void test() throws IOException {
        // fail("Not yet implemented");
        Text value = new Text("hello world hello hadoop");
        List<Pair<Text, IntWritable>> outputs = new ArrayList<Pair<Text, IntWritable>>();

        outputs.add(new Pair(new Text("hello"), new IntWritable(1)));
        outputs.add(new Pair(new Text("world"), new IntWritable(1)));
        outputs.add(new Pair(new Text("hello"), new IntWritable(1)));
        outputs.add(new Pair(new Text("hadoop"), new IntWritable(1)));
        // Temperature ^^^^^
        new MapDriver<Object, Text, Text, IntWritable>()
                .withMapper(new WordCount.TokenizerMapper())
                .withInput(new LongWritable(0), value).withAllOutput(outputs)
                .runTest();
    }
}