public OrderEntity Create(ProductEntity product, int quantity, CampaignEntity campaign, int currentTime)
{
if (product.Stock < quantity)
{
throw new InsufficientStockException();
}
OrderEntity order;
if (campaign != null)
{
var sellingPrice = _productPriceService.CalculateDiscountedPrice(campaign, product.Price, currentTime);
order = new OrderEntity(product.ProductCode, quantity, sellingPrice, campaign.Id);
campaign.NotifyOrderCreation(quantity, order.Price);
}
else
{
order = new OrderEntity(product.ProductCode, quantity, product.Price);
}
product.DecreaseStock(quantity);
return(order);
}
public void Product_When_Quantity_Is_Equal_Or_LessThan_Stock_Calculate_Correctly(string productCode, decimal price, int stock, int quantity)
{
var product = new ProductEntity(productCode, price, stock);
product.DecreaseStock(quantity);
Assert.Equal(stock - quantity, product.Stock);
}
public void Product_Should_Throw_Exception_When_Quantity_LessThan_Stock(string productCode, decimal price, int stock, int quantity)
{
Assert.Throws <InsufficientStockException>(() =>
{
var product = new ProductEntity(productCode, price, stock);
product.DecreaseStock(quantity);
});
}
