public async Task CanRegisterWithASocialLoginProviderFromLoginWithConfirmationAndRealEmailSender() { // Arrange var emailSender = new ContosoEmailSender(); void ConfigureTestServices(IServiceCollection services) { services.SetupTestEmailSender(emailSender); services .Configure <IdentityOptions>(o => o.SignIn.RequireConfirmedAccount = true) .SetupTestThirdPartyLogin(); } var client = ServerFactory .WithWebHostBuilder(whb => whb.ConfigureServices(ConfigureTestServices)) .CreateClient(); var guid = Guid.NewGuid(); var userName = $"{guid}"; var email = $"{guid}@example.com"; // Act & Assert await UserStories.RegisterNewUserWithSocialLoginWithConfirmationAsync(client, userName, email, hasRealEmailSender : true); Assert.Single(emailSender.SentEmails); }