@Test
 public void testWithDecode() throws IOException {
   File testFile = new File(folder.getRoot(), "testFileWithDecode.txt");
   FileUtils.writeStringToFile(testFile, FILEDATA);
   List<Text> output = ShellUtil.scanFile(testFile.getAbsolutePath(), true);
   assertEquals(
       ImmutableList.of(
           new Text(Base64.decodeBase64("line1".getBytes(StandardCharsets.UTF_8))),
           new Text(Base64.decodeBase64("line2".getBytes(StandardCharsets.UTF_8)))),
       output);
 }
  static void runTest(Connector c, MiniAccumuloClusterImpl cluster)
      throws AccumuloException, AccumuloSecurityException, TableExistsException,
          TableNotFoundException, MutationsRejectedException, IOException, InterruptedException,
          NoSuchAlgorithmException {
    c.tableOperations().create(tablename);
    BatchWriter bw = c.createBatchWriter(tablename, new BatchWriterConfig());
    for (int i = 0; i < 10; i++) {
      Mutation m = new Mutation("" + i);
      m.put(input_cf, input_cq, "row" + i);
      bw.addMutation(m);
    }
    bw.close();
    Process hash =
        cluster.exec(
            RowHash.class,
            Collections.singletonList(hadoopTmpDirArg),
            "-i",
            c.getInstance().getInstanceName(),
            "-z",
            c.getInstance().getZooKeepers(),
            "-u",
            "root",
            "-p",
            ROOT_PASSWORD,
            "-t",
            tablename,
            "--column",
            input_cfcq);
    assertEquals(0, hash.waitFor());

    Scanner s = c.createScanner(tablename, Authorizations.EMPTY);
    s.fetchColumn(new Text(input_cf), new Text(output_cq));
    int i = 0;
    for (Entry<Key, Value> entry : s) {
      MessageDigest md = MessageDigest.getInstance("MD5");
      byte[] check = Base64.encodeBase64(md.digest(("row" + i).getBytes()));
      assertEquals(entry.getValue().toString(), new String(check));
      i++;
    }
  }