@Test
public void testItemFilterMapper() throws Exception {
Mapper<LongWritable,Text,VarLongWritable,VarLongWritable>.Context context =
EasyMock.createMock(Mapper.Context.class);
context.write(new VarLongWritable(34L), new VarLongWritable(12L));
context.write(new VarLongWritable(78L), new VarLongWritable(56L));
EasyMock.replay(context);
ItemFilterMapper mapper = new ItemFilterMapper();
mapper.map(null, new Text("12,34"), context);
mapper.map(null, new Text("56,78"), context);
EasyMock.verify(context);
}