public void TestExceptionOnBackgroundThreadIsPropagatedToCallingThread() { using (MockDirectoryWrapper dir = NewMockDirectory()) { dir.FailOn(new FailOnlyOnMerge()); Document doc = new Document(); Field idField = NewStringField("id", "", Field.Store.YES); doc.Add(idField); var mergeScheduler = new ConcurrentMergeScheduler(); using (IndexWriter writer = new IndexWriter(dir, NewIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(Random)).SetMergeScheduler(mergeScheduler).SetMaxBufferedDocs(2).SetRAMBufferSizeMB(IndexWriterConfig.DISABLE_AUTO_FLUSH).SetMergePolicy(NewLogMergePolicy()))) { LogMergePolicy logMP = (LogMergePolicy)writer.Config.MergePolicy; logMP.MergeFactor = 10; for (int i = 0; i < 20; i++) { writer.AddDocument(doc); } bool exceptionHit = false; try { mergeScheduler.Sync(); } catch (MergePolicy.MergeException) { exceptionHit = true; } assertTrue(exceptionHit); } } }
public virtual void TestFlushExceptions() { #if NETCOREAPP2_0 fail("LUCENENET TODO: Causing fatal crashes intermittently on NETCOREAPP2.0"); #endif MockDirectoryWrapper directory = NewMockDirectory(); FailOnlyOnFlush failure = new FailOnlyOnFlush(this); directory.FailOn(failure); IndexWriter writer = new IndexWriter(directory, (IndexWriterConfig)NewIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(Random)).SetMaxBufferedDocs(2)); Document doc = new Document(); Field idField = NewStringField("id", "", Field.Store.YES); doc.Add(idField); int extraCount = 0; for (int i = 0; i < 10; i++) { if (VERBOSE) { Console.WriteLine("TEST: iter=" + i); } for (int j = 0; j < 20; j++) { idField.SetStringValue(Convert.ToString(i * 20 + j)); writer.AddDocument(doc); } // must cycle here because sometimes the merge flushes // the doc we just added and so there's nothing to // flush, and we don't hit the exception while (true) { writer.AddDocument(doc); failure.SetDoFail(); try { writer.Flush(true, true); if (failure.hitExc) { Assert.Fail("failed to hit IOException"); } extraCount++; } catch (IOException ioe) { if (VERBOSE) { Console.WriteLine(ioe.StackTrace); } failure.ClearDoFail(); break; } } Assert.AreEqual(20 * (i + 1) + extraCount, writer.NumDocs); } writer.Dispose(); IndexReader reader = DirectoryReader.Open(directory); Assert.AreEqual(200 + extraCount, reader.NumDocs); reader.Dispose(); directory.Dispose(); }