@Test
 public void testHadoopCodecFactoryGZip() {
   CodecFactory hadoopSnappyCodec =
       HadoopCodecFactory.fromHadoopString("org.apache.hadoop.io.compress.GZipCodec");
   CodecFactory avroSnappyCodec = CodecFactory.fromString("deflate");
   assertTrue(hadoopSnappyCodec.getClass().equals(avroSnappyCodec.getClass()));
 }
 @Test
 public void testHadoopCodecFactoryFail() {
   CodecFactory hadoopSnappyCodec =
       HadoopCodecFactory.fromHadoopString("org.apache.hadoop.io.compress.FooCodec");
   assertTrue(hadoopSnappyCodec == null);
 }