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 SolutionCrawlerRegistrationService(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);
}
}