public void InvoiceAddLineItemEventAddsLineItem()
        {
            _mockInvoiceView.GetCustomer += null;
            LastCall.IgnoreArguments();
            _mockInvoiceView.AddInvoiceLine += null;
            var addInvoiceLineEventRaiser = LastCall.IgnoreArguments().GetEventRaiser();
            _mockInvoiceView.CalculateTotals += null;
            LastCall.IgnoreArguments();
            _mockInvoiceView.SaveInvoice += null;
            LastCall.IgnoreArguments();

            const int quantity = 3;
            const decimal amount = 35.00M;
            ITaxesService taxesService = new TaxesService();
            Expect.Call(_mockInvoiceView.Quantity).Return(quantity);
            Expect.Call(_mockInvoiceView.Amount).Return(amount);
            Expect.Call(_mockTaxesRepository.GetTaxesService()).Return(taxesService);
            var invoiceItem = new InvoiceItem(quantity, amount);
            var invoice = new Invoice(taxesService);
            invoice.AddLineItem(invoiceItem);
            _mockInvoiceView.InvoiceLineItems = invoice.InvoiceItems;

            _mockRepository.ReplayAll();

            var invoicePresenter = new InvoicePresenter(_mockCustomerRepository, _mockTaxesRepository, _mockInvoiceRepository, _mockInvoiceView);
            addInvoiceLineEventRaiser.Raise(_mockInvoiceView, EventArgs.Empty);
        }
 private Invoice GetInvoice()
 {
     var invoice = new Invoice(_mockTaxesService);
     invoice.AddLineItem(new InvoiceItem(3, 15.00M));
     invoice.AddLineItem(new InvoiceItem(4, 10.00M));
     invoice.AddLineItem(new InvoiceItem(5, 2.00M));
     return invoice;
 }