public void AddInvoice()
{
IProductService productService = new ProductService(new ProductManager());
ICustomerService customerService = new CustomerService(new CustomerManager());
IInvoiceService invoiceService = new InvoiceService(new InvoiceManager(new ProductManager(), new CustomerManager()));
var products = productService.GetProducts();
var customer = customerService.GetCustomers().First();
var invoice = new Invoice
{
Id = Guid.NewGuid(),
DateTime = DateTimeOffset.Now,
CustomerId = customer.Id
};
var items = products.Select((product, i) =>
new InvoiceItem
{
Id = Guid.NewGuid(),
InvoiceId = invoice.Id,
ItemNumber = i + 1,
ProductId = product.Id,
Price = product.Price,
Quantity = 1
});
invoiceService.AddInvoice(invoice, items, 0);
// Check products balances.
foreach (var product in products)
{
Assert.AreEqual<int>(product.QuantityOnHand < 1 ? 0 : product.QuantityOnHand - 1, productService.GetProduct(product.Id).QuantityOnHand);
}
// Check customer balance.
Assert.AreEqual<decimal>(customer.Balance + products.Sum(o => o.Price), customerService.GetCustomer(customer.Id).Balance);
}
public void AddInvoiceWithQuantities()
{
IProductService productService = new ProductService(new ProductManager());
ICustomerService customerService = new CustomerService(new CustomerManager());
IInvoiceService invoiceService = new InvoiceService(new InvoiceManager(new ProductManager(), new CustomerManager()));
var customer = customerService.GetCustomers().First();
var product = productService.GetProducts().First();
var invoice = new Invoice
{
Id = Guid.NewGuid(),
DateTime = DateTimeOffset.Now,
CustomerId = customer.Id
};
var items = new List<InvoiceItem>
{
new InvoiceItem
{
Id = Guid.NewGuid(),
InvoiceId = invoice.Id,
ItemNumber = 1,
ProductId = product.Id,
Price = product.Price,
Quantity = 3
}
};
invoiceService.AddInvoice(invoice, items, 0);
// Check products balances.
Assert.AreEqual<int>(product.QuantityOnHand < 3 ? 0 : product.QuantityOnHand - 3, productService.GetProduct(product.Id).QuantityOnHand);
// Check customer balance.
Assert.AreEqual<decimal>(customer.Balance + product.Price * 3, customerService.GetCustomer(customer.Id).Balance);
}