private static void RefactoringSetup( TestWorkspace workspace, CodeRefactoringProvider provider, List <CodeAction> codeActions, out EditorLayerExtensionManager.ExtensionManager extensionManager, out VisualStudio.Text.ITextBuffer textBuffer ) { var document = GetDocument(workspace); textBuffer = workspace.GetTestDocument(document.Id).GetTextBuffer(); var span = document.GetSyntaxRootAsync().Result.Span; var context = new CodeRefactoringContext( document, span, (a) => codeActions.Add(a), CancellationToken.None ); provider.ComputeRefactoringsAsync(context).Wait(); var action = codeActions.Single(); extensionManager = document.Project.Solution.Workspace.Services.GetService <IExtensionManager>() as EditorLayerExtensionManager.ExtensionManager; }