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 HtmlVirtualDocument(Uri, textBuffer.Object);
// Act
document.Update(new[] { replace }, hostDocumentVersion: 1);
// Assert
Assert.Same(editedSnapshot, document.CurrentSnapshot.Snapshot);
}
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 HtmlVirtualDocument(Uri, textBuffer);
// Act
document.Update(Array.Empty <TextChange>(), hostDocumentVersion: 1);
// Assert
Assert.Equal(2, called);
var text = textBuffer.CurrentSnapshot.GetText();
Assert.Equal("Hello World", text);
}
public void Update_AlwaysSetsHostDocumentSyncVersion_AndUpdatesSnapshot()
{
// Arrange
var textBuffer = new TestTextBuffer(StringTextSnapshot.Empty);
var document = new HtmlVirtualDocument(Uri, textBuffer);
var originalSnapshot = document.CurrentSnapshot;
// Act
document.Update(Array.Empty <TextChange>(), 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 TextChange(new TextSpan(6, 5), string.Empty);
var document = new HtmlVirtualDocument(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 TextChange(new TextSpan(0, textBuffer.CurrentSnapshot.Length), "replaced text");
var document = new HtmlVirtualDocument(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 TextChange(new TextSpan(0, 0), "inserted text");
var textBuffer = new TestTextBuffer(StringTextSnapshot.Empty);
var document = new HtmlVirtualDocument(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 VisualStudioTextChange(6, 5, "Replaced");
var delete = new VisualStudioTextChange(0, 6, string.Empty);
var document = new HtmlVirtualDocument(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 HtmlVirtualDocument(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 HtmlVirtualDocument(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 HtmlVirtualDocument(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 HtmlVirtualDocument(Uri, textBuffer);
// Act
document.Update(new[] { replace, delete }, hostDocumentVersion: 1);
// Assert
edit.VerifyAll();
}