@Test(expected = IllegalArgumentException.class)
public void testRun_UnstoredFields() throws IOException {

  commitDocuments(getDirectory(getIndexPath1AsFile()), new UnstoredFieldsDocument("5", "This is test document 5"));
  LuceneStorageConfiguration lucene2SeqConf = new LuceneStorageConfiguration(configuration,
    asList(getIndexPath1()),
    seqFilesOutputPath,
    SingleFieldDocument.ID_FIELD,
    asList(UnstoredFieldsDocument.FIELD, UnstoredFieldsDocument.UNSTORED_FIELD));
  lucene2Seq.run(lucene2SeqConf);
}