internal async Task TestAsync(string testCode, string expected, OptionsCollection?options = null, ParseOptions?parseOptions = null)
{
using var workspace = CreateTestWorkspace(testCode, parseOptions);
options?.SetGlobalOptions(workspace.GlobalOptions);
var solution = workspace.CurrentSolution;
var document = workspace.CurrentSolution.Projects.First().Documents.First();
var languageServices = document.Project.LanguageServices;
var cleanupOptions =
options?.ToAnalyzerConfigOptions(languageServices).GetCodeCleanupOptions(allowImportsInHiddenRegions: false, fallbackOptions: null, languageServices) ??
CodeCleanupOptions.GetDefault(languageServices);
var formattingService = document.GetRequiredLanguageService <INewDocumentFormattingService>();
var formattedDocument = await formattingService.FormatNewDocumentAsync(document, hintDocument : null, cleanupOptions, CancellationToken.None);
var actual = await formattedDocument.GetTextAsync();
AssertEx.EqualOrDiff(expected, actual.ToString());
}