public void testCodec() throws Exception {
Directory dir = new AppendingRAMDirectory(new RAMDirectory());
IndexWriterConfig cfg = new IndexWriterConfig(Version.LUCENE_40, new MockAnalyzer());
cfg.setCodecProvider(new AppendingCodecProvider());
((LogMergePolicy) cfg.getMergePolicy()).setUseCompoundFile(false);
((LogMergePolicy) cfg.getMergePolicy()).setUseCompoundDocStore(false);
IndexWriter writer = new IndexWriter(dir, cfg);
Document doc = new Document();
doc.add(new Field("f", text, Store.YES, Index.ANALYZED, TermVector.WITH_POSITIONS_OFFSETS));
writer.addDocument(doc);
writer.commit();
writer.addDocument(doc);
writer.optimize();
writer.close();
IndexReader reader = IndexReader.open(dir, null, true, 1, new AppendingCodecProvider());
assertEquals(2, reader.numDocs());
doc = reader.document(0);
assertEquals(text, doc.get("f"));
Fields fields = MultiFields.getFields(reader);
Terms terms = fields.terms("f");
assertNotNull(terms);
TermsEnum te = terms.iterator();
assertEquals(SeekStatus.FOUND, te.seek(new BytesRef("quick")));
assertEquals(SeekStatus.FOUND, te.seek(new BytesRef("brown")));
assertEquals(SeekStatus.FOUND, te.seek(new BytesRef("fox")));
assertEquals(SeekStatus.FOUND, te.seek(new BytesRef("jumped")));
assertEquals(SeekStatus.FOUND, te.seek(new BytesRef("over")));
assertEquals(SeekStatus.FOUND, te.seek(new BytesRef("lazy")));
assertEquals(SeekStatus.FOUND, te.seek(new BytesRef("dog")));
assertEquals(SeekStatus.FOUND, te.seek(new BytesRef("the")));
DocsEnum de = te.docs(null, null);
assertTrue(de.advance(0) != DocsEnum.NO_MORE_DOCS);
assertEquals(2, de.freq());
assertTrue(de.advance(1) != DocsEnum.NO_MORE_DOCS);
assertTrue(de.advance(2) == DocsEnum.NO_MORE_DOCS);
reader.close();
}
