Lucene.Net.Index.TestTermVectorsWriter.TestEndOffsetPositionStopFilter C# (CSharp) Method

        public virtual void TestEndOffsetPositionStopFilter()
        {
            Directory dir = NewDirectory();
            IndexWriter w = new IndexWriter(dir, NewIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(Random(), MockTokenizer.SIMPLE, true, MockTokenFilter.ENGLISH_STOPSET)));
            Document doc = new Document();
            FieldType customType = new FieldType(TextField.TYPE_NOT_STORED);
            customType.StoreTermVectors = true;
            customType.StoreTermVectorPositions = true;
            customType.StoreTermVectorOffsets = true;
            Field f = NewField("field", "abcd the ", customType);
            doc.Add(f);
            doc.Add(f);
            w.AddDocument(doc);
            w.Dispose();

            IndexReader r = DirectoryReader.Open(dir);
            TermsEnum termsEnum = r.GetTermVectors(0).Terms("field").Iterator(null);
            Assert.IsNotNull(termsEnum.Next());
            DocsAndPositionsEnum dpEnum = termsEnum.DocsAndPositions(null, null);
            Assert.AreEqual(2, termsEnum.TotalTermFreq());

            Assert.IsTrue(dpEnum.NextDoc() != DocIdSetIterator.NO_MORE_DOCS);
            dpEnum.NextPosition();
            Assert.AreEqual(0, dpEnum.StartOffset());
            Assert.AreEqual(4, dpEnum.EndOffset());

            dpEnum.NextPosition();
            Assert.AreEqual(9, dpEnum.StartOffset());
            Assert.AreEqual(13, dpEnum.EndOffset());
            Assert.AreEqual(DocIdSetIterator.NO_MORE_DOCS, dpEnum.NextDoc());

            r.Dispose();
            dir.Dispose();
        }