public async Task CanResendConfirmingEmail() { // Arrange var emailSender = new ContosoEmailSender(); void ConfigureTestServices(IServiceCollection services) => services .SetupTestEmailSender(emailSender) .SetupEmailRequired(); var server = ServerFactory.WithWebHostBuilder(whb => whb.ConfigureServices(ConfigureTestServices)); var client = server.CreateClient(); var newClient = server.CreateClient(); var userName = $"{Guid.NewGuid()}@example.com"; var password = $"[PLACEHOLDER]-1a"; var loggedIn = await UserStories.RegisterNewUserAsync(client, userName, password); // Act & Assert // Use a new client to simulate a new browser session. await UserStories.ResendConfirmEmailAsync(server.CreateClient(), userName); Assert.Equal(2, emailSender.SentEmails.Count); var email = emailSender.SentEmails.Last(); await UserStories.ConfirmEmailAsync(email, newClient); }