@Test
  public void testBytes() throws Exception {
    List<Integer> docs = Arrays.asList(1, 5, 7);

    ObjectOpenHashSet<BytesRef> hTerms = new ObjectOpenHashSet<BytesRef>();
    List<BytesRef> cTerms = new ArrayList<BytesRef>(docs.size());
    for (int i = 0; i < docs.size(); i++) {
      BytesRef term = new BytesRef("str" + docs.get(i));
      hTerms.add(term);
      cTerms.add(term);
    }

    FieldDataTermsFilter hFilter = FieldDataTermsFilter.newBytes(getFieldData(strMapper), hTerms);

    int size = reader.maxDoc();
    FixedBitSet result = new FixedBitSet(size);

    result.clear(0, size);
    assertThat(result.cardinality(), equalTo(0));
    result.or(hFilter.getDocIdSet(reader.getContext(), reader.getLiveDocs()).iterator());
    assertThat(result.cardinality(), equalTo(docs.size()));
    for (int i = 0; i < reader.maxDoc(); i++) {
      assertThat(result.get(i), equalTo(docs.contains(i)));
    }

    // filter from mapper
    result.clear(0, size);
    assertThat(result.cardinality(), equalTo(0));
    result.or(
        strMapper
            .termsFilter(ifdService, cTerms, null)
            .getDocIdSet(reader.getContext(), reader.getLiveDocs())
            .iterator());
    assertThat(result.cardinality(), equalTo(docs.size()));
    for (int i = 0; i < reader.maxDoc(); i++) {
      assertThat(result.get(i), equalTo(docs.contains(i)));
    }

    result.clear(0, size);
    assertThat(result.cardinality(), equalTo(0));

    // filter on a numeric field using BytesRef terms
    // should not match any docs
    hFilter = FieldDataTermsFilter.newBytes(getFieldData(lngMapper), hTerms);
    result.or(hFilter.getDocIdSet(reader.getContext(), reader.getLiveDocs()).iterator());
    assertThat(result.cardinality(), equalTo(0));

    // filter on a numeric field using BytesRef terms
    // should not match any docs
    hFilter = FieldDataTermsFilter.newBytes(getFieldData(dblMapper), hTerms);
    result.or(hFilter.getDocIdSet(reader.getContext(), reader.getLiveDocs()).iterator());
    assertThat(result.cardinality(), equalTo(0));
  }