public void CanApplySpecialOfferingsExtended()
{
var(products, purchased) = SeedProducts();
// Given loyalty client
var client = new LoyaltyClient();
// And loyalty card
var loyaltyCard = client.LaunchLoyalty("Rick Richardson", "074 454-89-90");
// And some products
products.ForEach(p => client.AddProduct(p.Sku, p.Name, p.Price));
// When I process customer's purchase
client.ProcessPurchase(purchased.Select(p => (p.Sku, p.Qty)).ToList(), loyaltyCard);
// And get balance
var balance1 = client.LoyaltyBalance(loyaltyCard);
// And add X3 special offering
purchased.ForEach(p => client.AddSpecialOffering(p.Sku, Promotion.MultiplyPoints, 3));
// And then process same purchase again
client.ProcessPurchase(purchased.Select(p => (p.Sku, p.Qty)).ToList(), loyaltyCard);
// And get balance again
var balance2 = client.LoyaltyBalance(loyaltyCard);
// Then I expect balance to quadruple!!!
balance2.Should().BeGreaterThan(0);
balance2.Should().Be(balance1 * 4);
}
public void BasicScenario()
{
// Given loyalty client
var client = new LoyaltyClient();
// And some customer
var name = "James Jameson";
var phone = "088 913-49-84";
var loyaltyCard = string.Empty;
// And some product
var sku = $"sku{DateTime.Now.Ticks}";
var price = 100m;
client.AddProduct(sku, sku, price);
// When I launch customer's loyalty program
loyaltyCard = client.LaunchLoyalty(name, phone);
// Then I expect that customer's balance to be zero
client.LoyaltyBalance(loyaltyCard).Should().Be(0);
// When I purchase some product with qty=1 and price=100
var purchase = new List <(string, int)> {
(sku, 1)
};
client.ProcessPurchase(purchase, loyaltyCard);
// Then I expect balance to be 10 (0 + 100 * 1 * 0.1)
var balance1 = client.LoyaltyBalance(loyaltyCard);
balance1.Should().Be(10);
// When I add special offering to make every bonus X10
client.AddSpecialOffering(sku, Promotion.MultiplyPoints, 10);
// And make same purchase
client.ProcessPurchase(purchase, loyaltyCard);
// Then I expect balance to be 110 (10 + 100 * 1 * 0.1 * 10)
var balance2 = client.LoyaltyBalance(loyaltyCard);
balance2.Should().Be(110);
// When I remove special offering
client.RemoveSpecialOffering(sku);
// And make same purchase
client.ProcessPurchase(purchase, loyaltyCard);
// Then I expect balance to be 120 (110 + 100 * 1 * 0.1)
var balance3 = client.LoyaltyBalance(loyaltyCard);
balance3.Should().Be(120);
// When I make same purchase and use bonus
client.ProcessPurchase(purchase, loyaltyCard, useLoyaltyPoints: true);
// Then I expect balance to be 75, because 50 is spent as discount for half amount, customer pays 100-50=50 and receives 5 points for bonus
var balance4 = client.LoyaltyBalance(loyaltyCard);
balance4.Should().Be(75);
}