public void TestMethodCalculate()
{
OrderRequest request = new OrderRequest();
request.CustomerId = "8e4e8991-aaee-495b-9f24-52d5d0e509c5";
request.LoyaltyCard = "CTX0000001";
request.TransactionDate = Convert.ToDateTime("2020-03-03");
request.Basket = new OrderBasketItem[3] {
new OrderBasketItem()
{
ProductId = "PRD01", Quantity = 3, UnitPrice = 1.2M
}, new OrderBasketItem()
{
ProductId = "PRD02", Quantity = 2, UnitPrice = 2.0M
}, new OrderBasketItem()
{
ProductId = "PRD04", Quantity = 1, UnitPrice = 2.3M
}
};
IShoppingCalculation sc = new ShoppingCalculation(request);
OrderResponse response = sc.Calculate();
Assert.IsFalse(string.Compare(request.CustomerId, response.CustomerId) != 0, " CustomerId not match expected: " + request.CustomerId + " actual: " + response.CustomerId);
Assert.IsFalse(request.LoyaltyCard != response.LoyaltyCard, " LoyaltyCardnot match");
Assert.IsFalse(request.TransactionDate != response.TransactionDate, " TransactionDate not match");
Assert.IsFalse(response.TotalAmount != 9.9M, "TotalAmount incorrect");
Assert.IsFalse(response.GrandTotal != 9.3M, "GrandTotal incorrect");
Assert.IsFalse(response.DiscountApplied != 0.6M, "DiscountApplied incorrect");
Assert.IsFalse(response.PointsEarned != 9.2M, "PointsEarned incorrect");
}
/// <summary>
/// Backend API entry to generate order response
/// </summary>
/// <param name="request">OrderRequest object from front end</param>
/// <returns>OrderResponse object after calculation</returns>
public OrderResponse CalculateOrder(OrderRequest request)
{
try
{
IShoppingCalculation sc = new ShoppingCalculation(request);
OrderResponse response = sc.Calculate();
return(response);
}
catch (CustomExceptions e)
{
// log exception if needed in future
return(null);
}
catch (Exception e)
{
// system exception caught, add logic here and throw out
throw;
}
}