public void RegisterService()
        {
            using (var workspace = new TestWorkspace(TestExportProvider.CreateExportProviderWithCSharpAndVisualBasic(), SolutionCrawler))
            {
                var registrationService = new WorkCoordinatorRegistrationService(
                    SpecializedCollections.EmptyEnumerable<Lazy<IIncrementalAnalyzerProvider, IncrementalAnalyzerProviderMetadata>>(),
                    AggregateAsynchronousOperationListener.EmptyListeners);

                // register and unregister workspace to the service
                registrationService.Register(workspace);
                registrationService.Unregister(workspace);
            }
        }
        private void Wait(WorkCoordinatorRegistrationService service, TestWorkspace workspace)
        {
            WaitWaiter(workspace.ExportProvider);

            service.WaitUntilCompletion_ForTestingPurposesOnly(workspace);
        }
        private Analyzer ExecuteOperation(TestWorkspace workspace, Action<TestWorkspace> operation)
        {
            var worker = new Analyzer();
            var lazyWorker = new Lazy<IIncrementalAnalyzerProvider, IncrementalAnalyzerProviderMetadata>(() => new AnalyzerProvider(worker), Metadata.Crawler);
            var service = new WorkCoordinatorRegistrationService(new[] { lazyWorker }, GetListeners(workspace.ExportProvider));

            service.Register(workspace);

            // don't rely on background parser to have tree. explicitly do it here.
            TouchEverything(workspace.CurrentSolution);
            operation(workspace);
            TouchEverything(workspace.CurrentSolution);

            Wait(service, workspace);

            service.Unregister(workspace);

            return worker;
        }
        private void InsertText(string code, string text, bool expectDocumentAnalysis, string language = LanguageNames.CSharp)
        {
            using (var workspace = TestWorkspaceFactory.CreateWorkspaceFromLines(
                SolutionCrawler, language, compilationOptions: null, parseOptions: null, content: new string[] { code }))
            {
                var analyzer = new Analyzer();
                var lazyWorker = new Lazy<IIncrementalAnalyzerProvider, IncrementalAnalyzerProviderMetadata>(() => new AnalyzerProvider(analyzer), Metadata.Crawler);
                var service = new WorkCoordinatorRegistrationService(new[] { lazyWorker }, GetListeners(workspace.ExportProvider));

                service.Register(workspace);

                var testDocument = workspace.Documents.First();

                var insertPosition = testDocument.CursorPosition;
                var textBuffer = testDocument.GetTextBuffer();

                using (var edit = textBuffer.CreateEdit())
                {
                    edit.Insert(insertPosition.Value, text);
                    edit.Apply();
                }

                Wait(service, workspace);

                service.Unregister(workspace);

                Assert.Equal(1, analyzer.SyntaxDocumentIds.Count);
                Assert.Equal(expectDocumentAnalysis ? 1 : 0, analyzer.DocumentIds.Count);
            }
        }
        public void Document_InvocationReasons()
        {
            using (var workspace = new TestWorkspace(TestExportProvider.CreateExportProviderWithCSharpAndVisualBasic(), SolutionCrawler))
            {
                var solution = GetInitialSolutionInfo(workspace);
                workspace.OnSolutionAdded(solution);
                WaitWaiter(workspace.ExportProvider);

                var id = workspace.CurrentSolution.Projects.First().DocumentIds[0];

                var analyzer = new Analyzer(blockedRun: true);
                var lazyWorker = new Lazy<IIncrementalAnalyzerProvider, IncrementalAnalyzerProviderMetadata>(() => new AnalyzerProvider(analyzer), Metadata.Crawler);
                var service = new WorkCoordinatorRegistrationService(new[] { lazyWorker }, GetListeners(workspace.ExportProvider));

                service.Register(workspace);

                // first invocation will block worker
                workspace.ChangeDocument(id, SourceText.From("//"));
                analyzer.RunningEvent.Wait();

                var openReady = new ManualResetEventSlim(initialState: false);
                var closeReady = new ManualResetEventSlim(initialState: false);

                workspace.DocumentOpened += (o, e) => openReady.Set();
                workspace.DocumentClosed += (o, e) => closeReady.Set();

                // cause several different request to queue up
                workspace.ChangeDocument(id, SourceText.From("// "));
                workspace.OpenDocument(id);
                workspace.CloseDocument(id);

                openReady.Set();
                closeReady.Set();
                analyzer.BlockEvent.Set();

                Wait(service, workspace);

                service.Unregister(workspace);

                Assert.Equal(1, analyzer.SyntaxDocumentIds.Count);
                Assert.Equal(5, analyzer.DocumentIds.Count);
            }
        }
        public void Document_Cancellation_MultipleTimes()
        {
            using (var workspace = new TestWorkspace(TestExportProvider.CreateExportProviderWithCSharpAndVisualBasic(), SolutionCrawler))
            {
                var solution = GetInitialSolutionInfo(workspace);
                workspace.OnSolutionAdded(solution);
                WaitWaiter(workspace.ExportProvider);

                var id = workspace.CurrentSolution.Projects.First().DocumentIds[0];

                var analyzer = new Analyzer(waitForCancellation: true);
                var lazyWorker = new Lazy<IIncrementalAnalyzerProvider, IncrementalAnalyzerProviderMetadata>(() => new AnalyzerProvider(analyzer), Metadata.Crawler);
                var service = new WorkCoordinatorRegistrationService(new[] { lazyWorker }, GetListeners(workspace.ExportProvider));

                service.Register(workspace);

                workspace.ChangeDocument(id, SourceText.From("//"));
                analyzer.RunningEvent.Wait();
                analyzer.RunningEvent.Reset();

                workspace.ChangeDocument(id, SourceText.From("// "));
                analyzer.RunningEvent.Wait();

                workspace.ChangeDocument(id, SourceText.From("//  "));
                Wait(service, workspace);

                service.Unregister(workspace);

                Assert.Equal(1, analyzer.SyntaxDocumentIds.Count);
                Assert.Equal(5, analyzer.DocumentIds.Count);
            }
        }
        public void Document_Reanalyze()
        {
            using (var workspace = new TestWorkspace(TestExportProvider.CreateExportProviderWithCSharpAndVisualBasic(), SolutionCrawler))
            {
                var solution = GetInitialSolutionInfo(workspace);
                workspace.OnSolutionAdded(solution);
                WaitWaiter(workspace.ExportProvider);

                var info = solution.Projects[0].Documents[0];

                var worker = new Analyzer();
                var lazyWorker = new Lazy<IIncrementalAnalyzerProvider, IncrementalAnalyzerProviderMetadata>(() => new AnalyzerProvider(worker), Metadata.Crawler);
                var service = new WorkCoordinatorRegistrationService(new[] { lazyWorker }, GetListeners(workspace.ExportProvider));

                service.Register(workspace);

                // don't rely on background parser to have tree. explicitly do it here.
                TouchEverything(workspace.CurrentSolution);

                service.Reanalyze(workspace, worker, projectIds: null, documentIds: SpecializedCollections.SingletonEnumerable<DocumentId>(info.Id));

                TouchEverything(workspace.CurrentSolution);

                Wait(service, workspace);

                service.Unregister(workspace);

                Assert.Equal(1, worker.SyntaxDocumentIds.Count);
                Assert.Equal(1, worker.DocumentIds.Count);
            }
        }