public virtual void TestDummy() { MockDirectoryWrapper dir = NewMockDirectory(); dir.AssertNoUnrefencedFilesOnClose = true; IndexWriter iw = new IndexWriter(dir, new IndexWriterConfig(LuceneTestCase.TEST_VERSION_CURRENT, null)); iw.AddDocument(new Document()); iw.Dispose(); IndexOutput output = dir.CreateOutput("_hello.world", IOContext.DEFAULT); output.writeString("i am unreferenced!"); output.Dispose(); dir.Sync(CollectionsHelper.Singleton("_hello.world")); dir.Dispose(); }
public virtual void Test() { MockDirectoryWrapper dir = NewMockFSDirectory(CreateTempDir("TestIndexWriterOutOfFileDescriptors")); dir.PreventDoubleWrite = false; double rate = Random.NextDouble() * 0.01; //System.out.println("rate=" + rate); dir.RandomIOExceptionRateOnOpen = rate; int iters = AtLeast(20); LineFileDocs docs = new LineFileDocs(Random, DefaultCodecSupportsDocValues); IndexReader r = null; DirectoryReader r2 = null; bool any = false; MockDirectoryWrapper dirCopy = null; int lastNumDocs = 0; for (int iter = 0; iter < iters; iter++) { IndexWriter w = null; if (VERBOSE) { Console.WriteLine("TEST: iter=" + iter); } try { MockAnalyzer analyzer = new MockAnalyzer(Random); analyzer.MaxTokenLength = TestUtil.NextInt32(Random, 1, IndexWriter.MAX_TERM_LENGTH); IndexWriterConfig iwc = NewIndexWriterConfig(TEST_VERSION_CURRENT, analyzer); if (VERBOSE) { // Do this ourselves instead of relying on LTC so // we see incrementing messageID: iwc.SetInfoStream(new TextWriterInfoStream(Console.Out)); } var ms = iwc.MergeScheduler; if (ms is IConcurrentMergeScheduler) { ((IConcurrentMergeScheduler)ms).SetSuppressExceptions(); } w = new IndexWriter(dir, iwc); if (r != null && Random.Next(5) == 3) { if (Random.NextBoolean()) { if (VERBOSE) { Console.WriteLine("TEST: addIndexes IR[]"); } w.AddIndexes(new IndexReader[] { r }); } else { if (VERBOSE) { Console.WriteLine("TEST: addIndexes Directory[]"); } w.AddIndexes(new Directory[] { dirCopy }); } } else { if (VERBOSE) { Console.WriteLine("TEST: addDocument"); } w.AddDocument(docs.NextDoc()); } dir.RandomIOExceptionRateOnOpen = 0.0; w.Dispose(); w = null; // NOTE: this is O(N^2)! Only enable for temporary debugging: //dir.setRandomIOExceptionRateOnOpen(0.0); //TestUtil.CheckIndex(dir); //dir.setRandomIOExceptionRateOnOpen(rate); // Verify numDocs only increases, to catch IndexWriter // accidentally deleting the index: dir.RandomIOExceptionRateOnOpen = 0.0; Assert.IsTrue(DirectoryReader.IndexExists(dir)); if (r2 == null) { r2 = DirectoryReader.Open(dir); } else { DirectoryReader r3 = DirectoryReader.OpenIfChanged(r2); if (r3 != null) { r2.Dispose(); r2 = r3; } } Assert.IsTrue(r2.NumDocs >= lastNumDocs, "before=" + lastNumDocs + " after=" + r2.NumDocs); lastNumDocs = r2.NumDocs; //System.out.println("numDocs=" + lastNumDocs); dir.RandomIOExceptionRateOnOpen = rate; any = true; if (VERBOSE) { Console.WriteLine("TEST: iter=" + iter + ": success"); } } catch (IOException ioe) { if (VERBOSE) { Console.WriteLine("TEST: iter=" + iter + ": exception"); Console.WriteLine(ioe.ToString()); Console.Write(ioe.StackTrace); } if (w != null) { // NOTE: leave random IO exceptions enabled here, // to verify that rollback does not try to write // anything: w.Rollback(); } } if (any && r == null && Random.NextBoolean()) { // Make a copy of a non-empty index so we can use // it to addIndexes later: dir.RandomIOExceptionRateOnOpen = 0.0; r = DirectoryReader.Open(dir); dirCopy = NewMockFSDirectory(CreateTempDir("TestIndexWriterOutOfFileDescriptors.copy")); HashSet <string> files = new HashSet <string>(); foreach (string file in dir.ListAll()) { dir.Copy(dirCopy, file, file, IOContext.DEFAULT); files.Add(file); } dirCopy.Sync(files); // Have IW kiss the dir so we remove any leftover // files ... we can easily have leftover files at // the time we take a copy because we are holding // open a reader: (new IndexWriter(dirCopy, NewIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(Random)))).Dispose(); dirCopy.RandomIOExceptionRate = rate; dir.RandomIOExceptionRateOnOpen = rate; } } if (r2 != null) { r2.Dispose(); } if (r != null) { r.Dispose(); dirCopy.Dispose(); } dir.Dispose(); }