Lucene.Net.Index.IndexWriter.PrepareCommit C# (CSharp) Method

		public void  PrepareCommit()
		{
			EnsureOpen();
			PrepareCommit(null);
		}
		

        public virtual void TestPrepareCommit()
        {
            Directory dir = NewDirectory();

            IndexWriter writer = new IndexWriter(dir, NewIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(Random())).SetMaxBufferedDocs(2).SetMergePolicy(NewLogMergePolicy(5)));

            writer.Commit();

            for (int i = 0; i < 23; i++)
            {
                AddDoc(writer);
            }

            DirectoryReader reader = DirectoryReader.Open(dir);

            Assert.AreEqual(0, reader.NumDocs);

            writer.PrepareCommit();

            IndexReader reader2 = DirectoryReader.Open(dir);

            Assert.AreEqual(0, reader2.NumDocs);

            writer.Commit();

            IndexReader reader3 = DirectoryReader.OpenIfChanged(reader);

            Assert.IsNotNull(reader3);
            Assert.AreEqual(0, reader.NumDocs);
            Assert.AreEqual(0, reader2.NumDocs);
            Assert.AreEqual(23, reader3.NumDocs);
            reader.Dispose();
            reader2.Dispose();

            for (int i = 0; i < 17; i++)
            {
                AddDoc(writer);
            }

            Assert.AreEqual(23, reader3.NumDocs);
            reader3.Dispose();
            reader = DirectoryReader.Open(dir);
            Assert.AreEqual(23, reader.NumDocs);
            reader.Dispose();

            writer.PrepareCommit();

            reader = DirectoryReader.Open(dir);
            Assert.AreEqual(23, reader.NumDocs);
            reader.Dispose();

            writer.Commit();
            reader = DirectoryReader.Open(dir);
            Assert.AreEqual(40, reader.NumDocs);
            reader.Dispose();
            writer.Dispose();
            dir.Dispose();
        }