private void doTest(Random random, PrintWriter out, boolean useCompoundFiles, int MAX_DOCS)
      throws Exception {
    Directory directory = newDirectory();
    Analyzer analyzer = new MockAnalyzer(random);
    IndexWriterConfig conf = newIndexWriterConfig(analyzer);
    final MergePolicy mp = conf.getMergePolicy();
    mp.setNoCFSRatio(useCompoundFiles ? 1.0 : 0.0);
    IndexWriter writer = new IndexWriter(directory, conf);
    if (VERBOSE) {
      System.out.println("TEST: now build index MAX_DOCS=" + MAX_DOCS);
    }

    for (int j = 0; j < MAX_DOCS; j++) {
      Document d = new Document();
      d.add(newTextField(PRIORITY_FIELD, HIGH_PRIORITY, Field.Store.YES));
      d.add(newTextField(ID_FIELD, Integer.toString(j), Field.Store.YES));
      writer.addDocument(d);
    }
    writer.close();

    // try a search without OR
    IndexReader reader = DirectoryReader.open(directory);
    IndexSearcher searcher = newSearcher(reader);

    Query query = new TermQuery(new Term(PRIORITY_FIELD, HIGH_PRIORITY));
    out.println("Query: " + query.toString(PRIORITY_FIELD));
    if (VERBOSE) {
      System.out.println("TEST: search query=" + query);
    }

    final Sort sort = new Sort(SortField.FIELD_SCORE, new SortField(ID_FIELD, SortField.Type.INT));

    ScoreDoc[] hits = searcher.search(query, null, MAX_DOCS, sort).scoreDocs;
    printHits(out, hits, searcher);
    checkHits(hits, MAX_DOCS, searcher);

    // try a new search with OR
    searcher = newSearcher(reader);
    hits = null;

    BooleanQuery booleanQuery = new BooleanQuery();
    booleanQuery.add(
        new TermQuery(new Term(PRIORITY_FIELD, HIGH_PRIORITY)), BooleanClause.Occur.SHOULD);
    booleanQuery.add(
        new TermQuery(new Term(PRIORITY_FIELD, MED_PRIORITY)), BooleanClause.Occur.SHOULD);
    out.println("Query: " + booleanQuery.toString(PRIORITY_FIELD));

    hits = searcher.search(booleanQuery, null, MAX_DOCS, sort).scoreDocs;
    printHits(out, hits, searcher);
    checkHits(hits, MAX_DOCS, searcher);

    reader.close();
    directory.close();
  }
 private void checkHits(ScoreDoc[] hits, int expectedCount, IndexSearcher searcher)
     throws IOException {
   assertEquals("total results", expectedCount, hits.length);
   for (int i = 0; i < hits.length; i++) {
     if (i < 10 || (i > 94 && i < 105)) {
       Document d = searcher.doc(hits[i].doc);
       assertEquals("check " + i, String.valueOf(i), d.get(ID_FIELD));
     }
   }
 }
 private void printHits(PrintWriter out, ScoreDoc[] hits, IndexSearcher searcher)
     throws IOException {
   out.println(hits.length + " total results\n");
   for (int i = 0; i < hits.length; i++) {
     if (i < 10 || (i > 94 && i < 105)) {
       Document d = searcher.doc(hits[i].doc);
       out.println(i + " " + d.get(ID_FIELD));
     }
   }
 }