public void Update_NoChanges_InvokesPostChangedEventTwice_NoEffectiveChanges()
{
// Arrange
var textBuffer = new TestTextBuffer(new StringTextSnapshot("Hello World"));
var called = 0;
textBuffer.PostChanged += (s, a) =>
{
textBuffer.TryGetHostDocumentSyncVersion(out var version);
Assert.Equal(1, version);
called += 1;
};
var document = new CSharpVirtualDocument(Uri, textBuffer);
// Act
document.Update(Array.Empty <ITextChange>(), hostDocumentVersion: 1);
// Assert
Assert.Equal(2, called);
var text = textBuffer.CurrentSnapshot.GetText();
Assert.Equal("Hello World", text);
}
public override bool TryCreateFor(ITextBuffer hostDocumentBuffer, out VirtualDocument virtualDocument)
{
if (hostDocumentBuffer is null)
{
throw new ArgumentNullException(nameof(hostDocumentBuffer));
}
if (!hostDocumentBuffer.ContentType.IsOfType(RazorLSPConstants.RazorLSPContentTypeName))
{
// Another content type we don't care about.
virtualDocument = null;
return(false);
}
var hostDocumentUri = _fileUriProvider.GetOrCreate(hostDocumentBuffer);
// Index.cshtml => Index.cshtml__virtual.cs
var virtualCSharpFilePath = hostDocumentUri.GetAbsoluteOrUNCPath() + RazorLSPConstants.VirtualCSharpFileNameSuffix;
var virtualCSharpUri = new Uri(virtualCSharpFilePath);
var csharpBuffer = _textBufferFactory.CreateTextBuffer();
_fileUriProvider.AddOrUpdate(csharpBuffer, virtualCSharpUri);
csharpBuffer.Properties.AddProperty(RazorLSPConstants.ContainedLanguageMarker, true);
csharpBuffer.Properties.AddProperty(LanguageClientConstants.ClientNamePropertyKey, "RazorCSharp");
// Create a text document to trigger the C# language server initialization.
_textDocumentFactory.CreateTextDocument(csharpBuffer, virtualCSharpFilePath);
csharpBuffer.ChangeContentType(CSharpLSPContentType, editTag: null);
virtualDocument = new CSharpVirtualDocument(virtualCSharpUri, csharpBuffer);
return(true);
}
public void Update_RecalculatesSnapshot()
{
// Arrange
var replace = new TextChange(new TextSpan(123, 4), "replaced text");
var edit = new Mock <ITextEdit>();
edit.Setup(e => e.Replace(replace.Span.Start, replace.Span.Length, replace.NewText));
var textBuffer = new Mock <ITextBuffer>();
var textBufferSnapshot = Mock.Of <ITextSnapshot>();
textBuffer.Setup(buffer => buffer.CreateEdit(EditOptions.None, null, It.IsAny <IInviolableEditTag>()))
.Returns(edit.Object);
textBuffer.Setup(buffer => buffer.CurrentSnapshot)
.Returns(() => textBufferSnapshot);
var editedSnapshot = Mock.Of <ITextSnapshot>();
edit.Setup(e => e.Apply())
.Callback(() =>
{
textBufferSnapshot = editedSnapshot;
});
var document = new CSharpVirtualDocument(Uri, textBuffer.Object);
// Act
document.Update(new[] { replace }, hostDocumentVersion: 1);
// Assert
Assert.Same(editedSnapshot, document.CurrentSnapshot.Snapshot);
}
public void Update_AlwaysSetsHostDocumentSyncVersion_AndUpdatesSnapshot()
{
// Arrange
var textBuffer = new TestTextBuffer(StringTextSnapshot.Empty);
var document = new CSharpVirtualDocument(Uri, textBuffer);
var originalSnapshot = document.CurrentSnapshot;
// Act
document.Update(Array.Empty <ITextChange>(), hostDocumentVersion: 1337);
// Assert
Assert.NotSame(originalSnapshot, document.CurrentSnapshot);
Assert.Equal(1337, document.HostDocumentSyncVersion);
}
public void Update_Delete()
{
// Arrange
var textBuffer = new TestTextBuffer(new StringTextSnapshot("Hello World"));
var delete = new VisualStudioTextChange(6, 5, string.Empty);
var document = new CSharpVirtualDocument(Uri, textBuffer);
// Act
document.Update(new[] { delete }, hostDocumentVersion: 1);
// Assert
var text = textBuffer.CurrentSnapshot.GetText();
Assert.Equal("Hello ", text);
}
public void Update_Replace()
{
// Arrange
var textBuffer = new TestTextBuffer(new StringTextSnapshot("original"));
var replace = new VisualStudioTextChange(0, textBuffer.CurrentSnapshot.Length, "replaced text");
var document = new CSharpVirtualDocument(Uri, textBuffer);
// Act
document.Update(new[] { replace }, hostDocumentVersion: 1);
// Assert
var text = textBuffer.CurrentSnapshot.GetText();
Assert.Equal(replace.NewText, text);
}
public void Update_Insert()
{
// Arrange
var insert = new VisualStudioTextChange(0, 0, "inserted text");
var textBuffer = new TestTextBuffer(StringTextSnapshot.Empty);
var document = new CSharpVirtualDocument(Uri, textBuffer);
// Act
document.Update(new[] { insert }, hostDocumentVersion: 1);
// Assert
var text = textBuffer.CurrentSnapshot.GetText();
Assert.Equal(insert.NewText, text);
}
public void Update_MultipleEdits()
{
// Arrange
var textBuffer = new TestTextBuffer(new StringTextSnapshot("Hello World"));
var replace = new TextChange(new TextSpan(6, 5), "Replaced");
var delete = new TextChange(new TextSpan(0, 6), string.Empty);
var document = new CSharpVirtualDocument(Uri, textBuffer);
// Act
document.Update(new[] { replace, delete }, hostDocumentVersion: 1);
// Assert
var text = textBuffer.CurrentSnapshot.GetText();
Assert.Equal("Replaced", text);
}
public void Update_Delete()
{
// Arrange
var delete = new TextChange(new TextSpan(123, 4), string.Empty);
var edit = new Mock <ITextEdit>();
edit.Setup(e => e.Delete(delete.Span.Start, delete.Span.Length)).Verifiable();
edit.Setup(e => e.Apply()).Verifiable();
var textBuffer = CreateTextBuffer(edit.Object);
var document = new CSharpVirtualDocument(Uri, textBuffer);
// Act
document.Update(new[] { delete }, hostDocumentVersion: 1);
// Assert
edit.VerifyAll();
}
public void Update_Replace()
{
// Arrange
var replace = new TextChange(new TextSpan(123, 4), "replaced text");
var edit = new Mock <ITextEdit>();
edit.Setup(e => e.Replace(replace.Span.Start, replace.Span.Length, replace.NewText)).Verifiable();
edit.Setup(e => e.Apply()).Verifiable();
var textBuffer = CreateTextBuffer(edit.Object);
var document = new CSharpVirtualDocument(Uri, textBuffer);
// Act
document.Update(new[] { replace }, hostDocumentVersion: 1);
// Assert
edit.VerifyAll();
}
public void Update_Insert()
{
// Arrange
var insert = new TextChange(new TextSpan(123, 0), "inserted text");
var edit = new Mock <ITextEdit>();
edit.Setup(e => e.Insert(insert.Span.Start, insert.NewText)).Verifiable();
edit.Setup(e => e.Apply()).Verifiable();
var textBuffer = CreateTextBuffer(edit.Object);
var document = new CSharpVirtualDocument(Uri, textBuffer);
// Act
document.Update(new[] { insert }, hostDocumentVersion: 1);
// Assert
edit.VerifyAll();
}
public void Update_MultipleEdits()
{
// Arrange
var replace = new TextChange(new TextSpan(123, 4), "replaced text");
var delete = new TextChange(new TextSpan(123, 4), string.Empty);
var edit = new Mock <ITextEdit>();
edit.Setup(e => e.Delete(delete.Span.Start, delete.Span.Length)).Verifiable();
edit.Setup(e => e.Replace(replace.Span.Start, replace.Span.Length, replace.NewText)).Verifiable();
var textBuffer = CreateTextBuffer(edit.Object);
edit.Setup(e => e.Apply())
.Returns(textBuffer.CurrentSnapshot).Verifiable();
var document = new CSharpVirtualDocument(Uri, textBuffer);
// Act
document.Update(new[] { replace, delete }, hostDocumentVersion: 1);
// Assert
edit.VerifyAll();
}