public void testRandom() throws Exception { Directory dir = newDirectory(); final int NUM_TERMS = atLeast(20); final Set<BytesRef> terms = new HashSet<BytesRef>(); while (terms.size() < NUM_TERMS) { final String s = _TestUtil.randomRealisticUnicodeString(random()); // final String s = _TestUtil.randomSimpleString(random); if (s.length() > 0) { terms.add(new BytesRef(s)); } } final BytesRef[] termsArray = terms.toArray(new BytesRef[terms.size()]); Arrays.sort(termsArray); final int NUM_DOCS = atLeast(100); IndexWriterConfig conf = newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random())); // Sometimes swap in codec that impls ord(): if (random().nextInt(10) == 7) { // Make sure terms index has ords: Codec codec = _TestUtil.alwaysPostingsFormat(PostingsFormat.forName("Lucene41WithOrds")); conf.setCodec(codec); } final RandomIndexWriter w = new RandomIndexWriter(random(), dir, conf); final int[][] idToOrds = new int[NUM_DOCS][]; final Set<Integer> ordsForDocSet = new HashSet<Integer>(); for (int id = 0; id < NUM_DOCS; id++) { Document doc = new Document(); doc.add(new IntField("id", id, Field.Store.YES)); final int termCount = _TestUtil.nextInt(random(), 0, 20 * RANDOM_MULTIPLIER); while (ordsForDocSet.size() < termCount) { ordsForDocSet.add(random().nextInt(termsArray.length)); } final int[] ordsForDoc = new int[termCount]; int upto = 0; if (VERBOSE) { System.out.println("TEST: doc id=" + id); } for (int ord : ordsForDocSet) { ordsForDoc[upto++] = ord; Field field = newStringField("field", termsArray[ord].utf8ToString(), Field.Store.NO); if (VERBOSE) { System.out.println(" f=" + termsArray[ord].utf8ToString()); } doc.add(field); } ordsForDocSet.clear(); Arrays.sort(ordsForDoc); idToOrds[id] = ordsForDoc; w.addDocument(doc); } final DirectoryReader r = w.getReader(); w.close(); if (VERBOSE) { System.out.println("TEST: reader=" + r); } for (AtomicReaderContext ctx : r.leaves()) { if (VERBOSE) { System.out.println("\nTEST: sub=" + ctx.reader()); } verify(ctx.reader(), idToOrds, termsArray, null); } // Also test top-level reader: its enum does not support // ord, so this forces the OrdWrapper to run: if (VERBOSE) { System.out.println("TEST: top reader"); } AtomicReader slowR = SlowCompositeReaderWrapper.wrap(r); verify(slowR, idToOrds, termsArray, null); FieldCache.DEFAULT.purge(slowR); r.close(); dir.close(); }