public async Task TryGetProvisionalCompletionsAsync_AtCorrectProvisionalCompletionPoint_ReturnsExpectedResult()
{
// Arrange
var completionRequest = new CompletionParams()
{
TextDocument = new TextDocumentIdentifier()
{
Uri = Uri
},
Context = new CompletionContext()
{
TriggerKind = CompletionTriggerKind.TriggerCharacter,
TriggerCharacter = "."
},
Position = new Position(0, 1)
};
var virtualDocumentUri = new Uri("C:/path/to/file.razor__virtual.cs");
var documentManager = new TestDocumentManager();
var languageServerCalled = false;
var expectedItem = new CompletionItem()
{
InsertText = "DateTime"
};
var requestInvoker = new Mock <LSPRequestInvoker>(MockBehavior.Strict);
requestInvoker
.Setup(r => r.ReinvokeRequestOnServerAsync <CompletionParams, SumType <CompletionItem[], CompletionList>?>(It.IsAny <string>(), LanguageServerKind.CSharp, It.IsAny <CompletionParams>(), It.IsAny <CancellationToken>()))
.Callback <string, LanguageServerKind, CompletionParams, CancellationToken>((method, serverKind, completionParams, ct) =>
{
Assert.Equal(Methods.TextDocumentCompletionName, method);
Assert.Equal(LanguageServerKind.CSharp, serverKind);
languageServerCalled = true;
})
.Returns(Task.FromResult <SumType <CompletionItem[], CompletionList>?>(new[] { expectedItem }));
var projectionResult = new ProjectionResult()
{
LanguageKind = RazorLanguageKind.Html,
Position = new Position(1, 7)
};
var previousCharacterProjection = new ProjectionResult()
{
LanguageKind = RazorLanguageKind.CSharp,
Position = new Position(100, 10),
PositionIndex = 1000,
Uri = virtualDocumentUri
};
var projectionProvider = new Mock <LSPProjectionProvider>();
projectionProvider.Setup(p => p.GetProjectionAsync(It.IsAny <LSPDocumentSnapshot>(), It.IsAny <Position>(), It.IsAny <CancellationToken>())).Returns(Task.FromResult(previousCharacterProjection));
var completionHandler = new CompletionHandler(JoinableTaskContext, requestInvoker.Object, documentManager, projectionProvider.Object);
// Act
var(succeeded, result) = await completionHandler.TryGetProvisionalCompletionsAsync(completionRequest, Mock.Of <LSPDocumentSnapshot>(), projectionResult, CancellationToken.None).ConfigureAwait(false);
// Assert
Assert.True(succeeded);
Assert.True(languageServerCalled);
Assert.Equal(2, documentManager.UpdateVirtualDocumentCallCount);
Assert.NotNull(result);
var item = Assert.Single((CompletionItem[])result.Value);
Assert.Equal(expectedItem.InsertText, item.InsertText);
}