Lucene.Net.Index.TestNumericDocValuesUpdates.TestUpdateAllDeletedSegment C# (CSharp) Method

        public virtual void TestUpdateAllDeletedSegment()
        {
            Directory dir = NewDirectory();
            IndexWriterConfig conf = NewIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(Random()));
            IndexWriter writer = new IndexWriter(dir, conf);

            Document doc = new Document();
            doc.Add(new StringField("id", "doc", Store.NO));
            doc.Add(new NumericDocValuesField("f1", 1L));
            writer.AddDocument(doc);
            writer.AddDocument(doc);
            writer.Commit();
            writer.DeleteDocuments(new Term("id", "doc")); // delete all docs in the first segment
            writer.AddDocument(doc);
            writer.UpdateNumericDocValue(new Term("id", "doc"), "f1", 2L);
            writer.Dispose();

            DirectoryReader reader = DirectoryReader.Open(dir);
            Assert.AreEqual(1, reader.Leaves.Count);
            Assert.AreEqual(2L, ((AtomicReader)reader.Leaves[0].Reader).GetNumericDocValues("f1").Get(0));
            reader.Dispose();

            dir.Dispose();
        }