public OptionViewModelTests()
{
WpfTestRunner.RequireWpfFact("Tests create WPF ViewModels and updates previews with them");
}
public async Task LargeNumberOfSpans()
{
using (var workspace = TestWorkspace.CreateCSharp(@"class Program
{
void M()
{
int z = 0;
z = z + z + z + z + z + z + z + z + z + z +
z + z + z + z + z + z + z + z + z + z +
z + z + z + z + z + z + z + z + z + z +
z + z + z + z + z + z + z + z + z + z +
z + z + z + z + z + z + z + z + z + z +
z + z + z + z + z + z + z + z + z + z +
z + z + z + z + z + z + z + z + z + z +
z + z + z + z + z + z + z + z + z + z +
z + z + z + z + z + z + z + z + z + z +
z + z + z + z + z + z + z + z + z + z;
}
}"))
{
List <ITagSpan <TestTag> > tagProducer(SnapshotSpan span, CancellationToken cancellationToken)
{
return(new List <ITagSpan <TestTag> >()
{
new TagSpan <TestTag>(span, new TestTag())
});
}
var asyncListener = new AsynchronousOperationListener();
WpfTestRunner.RequireWpfFact($"{nameof(AsynchronousTaggerTests)}.{nameof(LargeNumberOfSpans)} creates asynchronous taggers");
var notificationService = workspace.GetService <IForegroundNotificationService>();
var eventSource = CreateEventSource();
var taggerProvider = new TestTaggerProvider(
workspace.ExportProvider.GetExportedValue <IThreadingContext>(),
tagProducer,
eventSource,
workspace,
asyncListener,
notificationService);
var document = workspace.Documents.First();
var textBuffer = document.TextBuffer;
var snapshot = textBuffer.CurrentSnapshot;
var tagger = taggerProvider.CreateTagger <TestTag>(textBuffer);
using (IDisposable disposable = (IDisposable)tagger)
{
var spans = Enumerable.Range(0, 101).Select(i => new Span(i * 4, 1));
var snapshotSpans = new NormalizedSnapshotSpanCollection(snapshot, spans);
eventSource.SendUpdateEvent();
await asyncListener.CreateWaitTask();
var tags = tagger.GetTags(snapshotSpans);
Assert.Equal(1, tags.Count());
}
}
}
public async Task TestPreviewDiagnosticTaggerInPreviewPane()
{
// TODO: WPF required due to https://github.com/dotnet/roslyn/issues/46153
using var workspace = TestWorkspace.CreateCSharp(
"class { }",
composition: EditorTestCompositions.EditorFeaturesWpf
);
workspace.TryApplyChanges(
workspace.CurrentSolution.WithAnalyzerReferences(
new[]
{
DiagnosticExtensions.GetCompilerDiagnosticAnalyzerReference(
LanguageNames.CSharp
)
}
)
);
// set up listener to wait until diagnostic finish running
_ = workspace.ExportProvider.GetExportedValue <IDiagnosticService>();
var hostDocument = workspace.Projects.First().Documents.First();
// make a change to remove squiggle
var oldDocument = workspace.CurrentSolution.GetRequiredDocument(hostDocument.Id);
var oldText = oldDocument.GetTextAsync().Result;
var newDocument = oldDocument.WithText(
oldText.WithChanges(new TextChange(new TextSpan(0, oldText.Length), "class C { }"))
);
// create a diff view
WpfTestRunner.RequireWpfFact(
$"{nameof(TestPreviewDiagnosticTaggerInPreviewPane)} creates a {nameof(DifferenceViewerPreview)}"
);
var previewFactoryService =
(PreviewFactoryService)workspace.ExportProvider.GetExportedValue <IPreviewFactoryService>();
using var diffView = await previewFactoryService.CreateChangedDocumentPreviewViewAsync(
oldDocument,
newDocument,
CancellationToken.None
);
AssertEx.NotNull(diffView);
var listenerProvider =
workspace.ExportProvider.GetExportedValue <AsynchronousOperationListenerProvider>();
// set up tagger for both buffers
var leftBuffer = diffView.Viewer.LeftView.BufferGraph
.GetTextBuffers(t => t.ContentType.IsOfType(ContentTypeNames.CSharpContentType))
.First();
var provider = workspace.ExportProvider
.GetExportedValues <ITaggerProvider>()
.OfType <DiagnosticsSquiggleTaggerProvider>()
.Single();
var leftTagger = provider.CreateTagger <IErrorTag>(leftBuffer);
using var leftDisposable = leftTagger as IDisposable;
var rightBuffer = diffView.Viewer.RightView.BufferGraph
.GetTextBuffers(t => t.ContentType.IsOfType(ContentTypeNames.CSharpContentType))
.First();
var rightTagger = provider.CreateTagger <IErrorTag>(rightBuffer);
using var rightDisposable = rightTagger as IDisposable;
// wait for diagnostics and taggers
await listenerProvider.WaitAllDispatcherOperationAndTasksAsync(
workspace,
FeatureAttribute.DiagnosticService,
FeatureAttribute.ErrorSquiggles
);
// check left buffer
var leftSnapshot = leftBuffer.CurrentSnapshot;
var leftSpans = leftTagger.GetTags(leftSnapshot.GetSnapshotSpanCollection()).ToList();
Assert.Equal(1, leftSpans.Count);
// check right buffer
var rightSnapshot = rightBuffer.CurrentSnapshot;
var rightSpans = rightTagger
.GetTags(rightSnapshot.GetSnapshotSpanCollection())
.ToList();
Assert.Equal(0, rightSpans.Count);
}
public AsynchronousWorkerTests()
{
WpfTestRunner.RequireWpfFact($"Tests are testing {nameof(AsynchronousSerialWorkQueue)} which is designed to run methods on the UI thread");
_foregroundSyncContext = SynchronizationContext.Current;
Assert.NotNull(_foregroundSyncContext);
}