public void TryGetFromDocument_ReturnsTrueForValidDocuments()
{
// Arrange
var textBuffer = CreateTextBuffer();
var bufferGraphService = CreateBufferGraphService(textBuffer);
var document = CreateDocument(textBuffer);
var bufferProvider = new DefaultTextBufferProvider(bufferGraphService);
// Act
var result = bufferProvider.TryGetFromDocument(document, out var buffer);
// Assert
Assert.True(result);
Assert.Same(textBuffer, buffer);
}
public void TryGetFromDocument_ReturnsFalseIfCannotExtractSourceText()
{
// Arrange
var textBuffer = CreateTextBuffer();
var bufferGraphService = CreateBufferGraphService(textBuffer);
var document = CreateDocumentWithoutText();
var bufferProvider = new DefaultTextBufferProvider(bufferGraphService);
// Act
var result = bufferProvider.TryGetFromDocument(document, out var buffer);
// Assert
Assert.False(result);
Assert.Null(buffer);
}
public void TryGetFromDocument_ReturnsFalseIfSourceContainerNotConstructedFromTextBuffer()
{
// Arrange
var bufferGraphService = CreateBufferGraphService(null);
var text = SourceText.From("Hello World");
var document = CreateDocumentWithoutText();
document = document.WithText(text);
var bufferProvider = new DefaultTextBufferProvider(bufferGraphService);
// Act
var result = bufferProvider.TryGetFromDocument(document, out var buffer);
// Assert
Assert.False(result);
Assert.Null(buffer);
}
public void TryGetFromDocument_ReturnsFalseIfBufferGraphCanNotFindRazorBuffer()
{
// Arrange
var textBuffer = CreateTextBuffer();
var bufferGraph = new Mock <IBufferGraph>();
bufferGraph.Setup(graph => graph.GetTextBuffers(It.IsAny <Predicate <ITextBuffer> >()))
.Returns(new Collection <ITextBuffer>());
var bufferGraphService = new Mock <IBufferGraphFactoryService>();
bufferGraphService.Setup(service => service.CreateBufferGraph(textBuffer))
.Returns(bufferGraph.Object);
var document = CreateDocument(textBuffer);
var bufferProvider = new DefaultTextBufferProvider(bufferGraphService.Object);
// Act
var result = bufferProvider.TryGetFromDocument(document, out var buffer);
// Assert
Assert.False(result);
Assert.Null(buffer);
}