Lucene.Net.Index.TestBinaryDocValuesUpdates.TestReopen C# (CSharp) Method

        public virtual void TestReopen()
        {
            Directory dir = NewDirectory();
            IndexWriterConfig conf = NewIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(Random()));
            IndexWriter writer = new IndexWriter(dir, conf);
            writer.AddDocument(Doc(0));
            writer.AddDocument(Doc(1));

            bool isNRT = Random().NextBoolean();
            DirectoryReader reader1;
            if (isNRT)
            {
                reader1 = DirectoryReader.Open(writer, true);
            }
            else
            {
                writer.Commit();
                reader1 = DirectoryReader.Open(dir);
            }

            // update doc
            writer.UpdateBinaryDocValue(new Term("id", "doc-0"), "val", ToBytes(10)); // update doc-0's value to 10
            if (!isNRT)
            {
                writer.Commit();
            }

            // reopen reader and assert only it sees the update
            DirectoryReader reader2 = DirectoryReader.OpenIfChanged(reader1);
            Assert.IsNotNull(reader2);
            Assert.IsTrue(reader1 != reader2);

            BytesRef scratch = new BytesRef();
            BinaryDocValues bdv1 = ((AtomicReader)reader1.Leaves[0].Reader).GetBinaryDocValues("val");
            BinaryDocValues bdv2 = ((AtomicReader)reader2.Leaves[0].Reader).GetBinaryDocValues("val");
            Assert.AreEqual(1, GetValue(bdv1, 0, scratch));
            Assert.AreEqual(10, GetValue(bdv2, 0, scratch));

            IOUtils.Close(writer, reader1, reader2, dir);
        }