public async Task TestWithMockDiagnosticService_TaggerProviderCreatedBeforeInitialDiagnosticsReported()
{
// This test produces diagnostics from a mock service so that we are disconnected from
// all teh asynchrony of hte actual async analyzer engine. If this fails, then the
// issue is almost certainly in the DiagnosticsSquiggleTaggerProvider code. If this
// succeed, but other squiggle tests fail, then it is likely an issue with the
// diagnostics engine not actually reporting all diagnostics properly.
using (var workspace = await TestWorkspace.CreateCSharpAsync(new string[] { "class A { }" }, CSharpParseOptions.Default))
using (var wrapper = new DiagnosticTaggerWrapper(workspace))
{
var asyncListener = new AsynchronousOperationListener();
var listeners = AsynchronousOperationListener.CreateListeners(
ValueTuple.Create(FeatureAttribute.DiagnosticService, asyncListener),
ValueTuple.Create(FeatureAttribute.ErrorSquiggles, asyncListener));
var diagnosticService = new MockDiagnosticService(workspace);
var provider = new DiagnosticsSquiggleTaggerProvider(
workspace.Services.GetService <IOptionService>(), diagnosticService,
workspace.GetService <IForegroundNotificationService>(), listeners);
// Create the tagger before the first diagnostic event has been fired.
var tagger = provider.CreateTagger <IErrorTag>(workspace.Documents.First().GetTextBuffer());
// Now product hte first diagnostic and fire the events.
var tree = await workspace.CurrentSolution.Projects.Single().Documents.Single().GetSyntaxTreeAsync();
var span = TextSpan.FromBounds(0, 5);
diagnosticService.CreateDiagnosticAndFireEvents(Location.Create(tree, span));
using (var disposable = tagger as IDisposable)
{
await asyncListener.CreateWaitTask();
var snapshot = workspace.Documents.First().GetTextBuffer().CurrentSnapshot;
var spans = tagger.GetTags(snapshot.GetSnapshotSpanCollection()).ToList();
Assert.Equal(1, spans.Count);
Assert.Equal(span.ToSpan(), spans[0].Span.Span);
}
}
}
public async Task TestWithMockDiagnosticService_TaggerProviderCreatedAfterInitialDiagnosticsReported()
{
// This test produces diagnostics from a mock service so that we are disconnected from
// all the asynchrony of the actual async analyzer engine. If this fails, then the
// issue is almost certainly in the DiagnosticsSquiggleTaggerProvider code. If this
// succeed, but other squiggle tests fail, then it is likely an issue with the
// diagnostics engine not actually reporting all diagnostics properly.
using var workspace = TestWorkspace.CreateCSharp(new string[] { "class A { }" }, CSharpParseOptions.Default);
using var wrapper = new DiagnosticTaggerWrapper <DiagnosticsSquiggleTaggerProvider>(workspace);
var listenerProvider = workspace.ExportProvider.GetExportedValue <IAsynchronousOperationListenerProvider>();
var diagnosticService = new MockDiagnosticService(workspace);
var provider = new DiagnosticsSquiggleTaggerProvider(
workspace.ExportProvider.GetExportedValue <IThreadingContext>(),
diagnosticService,
workspace.GetService <IForegroundNotificationService>(),
listenerProvider);
// Create and fire the diagnostic events before the tagger is even made.
var tree = await workspace.CurrentSolution.Projects.Single().Documents.Single().GetRequiredSyntaxTreeAsync(CancellationToken.None);
var span = TextSpan.FromBounds(0, 5);
diagnosticService.CreateDiagnosticAndFireEvents(Location.Create(tree, span));
var tagger = provider.CreateTagger <IErrorTag>(workspace.Documents.First().GetTextBuffer());
using var disposable = tagger as IDisposable;
await listenerProvider.GetWaiter(FeatureAttribute.DiagnosticService).ExpeditedWaitAsync();
await listenerProvider.GetWaiter(FeatureAttribute.ErrorSquiggles).ExpeditedWaitAsync();
var snapshot = workspace.Documents.First().GetTextBuffer().CurrentSnapshot;
var spans = tagger.GetTags(snapshot.GetSnapshotSpanCollection()).ToList();
Assert.Equal(1, spans.Count);
Assert.Equal(span.ToSpan(), spans[0].Span.Span);
}