IndexSearcher searcher = new IndexSearcher(reader);
TopDocs topDocs = searcher.search(new TermQuery(new Term("_id", "1")), 1);
assertThat(topDocs.totalHits, equalTo(1));
FastVectorHighlighter highlighter = new FastVectorHighlighter();
String fragment = highlighter.getBestFragment(highlighter.getFieldQuery(new TermQuery(new Term("content", "bad"))),
reader, topDocs.scoreDocs[0].doc, "content", 30);
assertThat(fragment, nullValue());
}