public void SendOrderConfirmation_sends_email() { const string content = "Email Content"; var order = new Order() { Email = "*****@*****.**" }; builder.Expect(x => x.GetEmailContent(Arg <string> .Is.Equal("OrderConfirmation"), Arg <IDictionary <string, object> > .Is.Anything)).Return(content); service.SendOrderConfirmation(order); sender.AssertWasCalled(x => x.Send(new[] { order.Email, baseControllerService.EmailAddress }, "Suteki Shop: your order", content, true)); }