Lucene.Net.Index.TestIndexWriterReader.TestDuringAddDelete C# (CSharp) Метод

        public virtual void TestDuringAddDelete()
        {
            Directory dir1 = NewDirectory();
            var writer = new IndexWriter(dir1, NewIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(Random())).SetMergePolicy(NewLogMergePolicy(2)));

            // create the index
            CreateIndexNoClose(false, "test", writer);
            writer.Commit();

            DirectoryReader r = writer.Reader;

            const float SECONDS = 0.5f;

            long endTime = (long)(Environment.TickCount + 1000.0 * SECONDS);
            IList<Exception> excs = new SynchronizedCollection<Exception>();

            var threads = new ThreadClass[NumThreads];
            for (int i = 0; i < NumThreads; i++)
            {
                threads[i] = new ThreadAnonymousInnerClassHelper2(writer, r, endTime, excs);
                threads[i].SetDaemon(true);
                threads[i].Start();
            }

            int sum = 0;
            while (Environment.TickCount < endTime)
            {
                DirectoryReader r2 = DirectoryReader.OpenIfChanged(r);
                if (r2 != null)
                {
                    r.Dispose();
                    r = r2;
                }
                Query q = new TermQuery(new Term("indexname", "test"));
                IndexSearcher searcher = NewSearcher(r);
                sum += searcher.Search(q, 10).TotalHits;
            }

            for (int i = 0; i < NumThreads; i++)
            {
                threads[i].Join();
            }
            // at least search once
            DirectoryReader dr2 = DirectoryReader.OpenIfChanged(r);
            if (dr2 != null)
            {
                r.Dispose();
                r = dr2;
            }
            Query q2 = new TermQuery(new Term("indexname", "test"));
            IndexSearcher indSearcher = NewSearcher(r);
            sum += indSearcher.Search(q2, 10).TotalHits;
            Assert.IsTrue(sum > 0, "no documents found at all");

            Assert.AreEqual(0, excs.Count);
            writer.Dispose();

            r.Dispose();
            dir1.Dispose();
        }