content: import static org.hamcrest.CoreMatchers.is;
  import static org.junit.Assert.assertThat;
  
  import java.io.IOException;
  import java.net.URI;
  import org.apache.hadoop.conf.Configuration;
  import org.apache.hadoop.fs.*;
  import org.apache.hadoop.io.*;
  import org.apache.hadoop.util.ReflectionUtils;
  import org.junit.*;
  
  public class MapFileSeekTest {
    
    private static final String MAP_URI = "test.numbers.map";
    private FileSystem fs;
    private MapFile.Reader reader;
    private WritableComparable<?> key;
    private Writable value;
  
    @Before
    public void setUp() throws IOException {
      MapFileWriteDemo.main(new String[] { MAP_URI });
  
      Configuration conf = new Configuration();
      fs = FileSystem.get(URI.create(MAP_URI), conf);
  
      reader = new MapFile.Reader(fs, MAP_URI, conf);
      key = (WritableComparable<?>)
        ReflectionUtils.newInstance(reader.getKeyClass(), conf);
      value = (Writable) ReflectionUtils.newInstance(reader.getValueClass(), conf);
    }
  
    @After
    public void tearDown() throws IOException {
      fs.delete(new Path(MAP_URI), true);
    }
    
    @Test
    public void get() throws Exception {
      Text value = new Text();
      reader.get(new IntWritable(496), value);
      assertThat(value.toString(), is("One, two, buckle my shoe"));
    }
    
    @Test
    public void seek() throws Exception {
      assertThat(reader.seek(new IntWritable(496)), is(true));
      assertThat(reader.next(key, value), is(true));
      assertThat(((IntWritable) key).get(), is(497));
      assertThat(((Text) value).toString(), is("Three, four, shut the door"));
    }
    
    
  
  }
  