public void Can_calculate_price_based_on_product_weight()
{
//setup
var product = new Product(code: "9501101530003", name: "Red Delicious apple", price: 2, isPriceByWeight: true);
var sut = new CashRegister(new[] { product });
//act
sut.Scan(product.Code, weightKg: 0.3);
var totalPrice = sut.CalculatePrice();
Assert.That(totalPrice, Is.EqualTo(0.6));
}
public void Can_calculate_price_per_item()
{
//setup
var product = new Product(code: "9501101530002", name: "Cheerios", price: 6.99m);
var sut = new CashRegister(new [] { product });
//act
sut.Scan(product.Code);
var totalPrice = sut.CalculatePrice();
Assert.That(totalPrice, Is.EqualTo(product.Price));
}
static void Main(string[] args)
{
CashRegister cr = new CashRegister();
Item[] items = new Item[] {
new Item(1.00, "pear"),
new Item(2.00, "apple"),
new Item(1.50, "plum")
};
Console.WriteLine("Cakowita wartość:");
Console.WriteLine(Decimal.Round(cr.CalculatePrice(items), 2));
cr.tax = 0.50m;
Console.WriteLine("Cakowita wartość po podwyżce podatku do 50%:");
Console.WriteLine(Decimal.Round(cr.CalculatePrice(items), 2));
Console.WriteLine("Produkty Alfabetycznie:");
cr.PrintBill(items, new OrderByName());
Console.WriteLine("Produkty według ceny:");
cr.PrintBill(items, new OrderByPrice());
}
public void Cannot_calculate_total_for_nonexisting_item()
{
//setup
const string nonExistingProductCode = "9501101530004";
var product = new Product(code: "9501101530003", name: "Cheerios", price: 6.99m);
var sut = new CashRegister(new[] { product });
//act
var productExists = sut.Scan(nonExistingProductCode);
var totalPrice = sut.CalculatePrice();
Assert.IsFalse(productExists);
Assert.That(totalPrice, Is.EqualTo(0.0m));
}
public void Can_calculate_price_for_products_per_item_and_weight()
{
//setup
var productWithPricePerItem = new Product(code: "9501101530002", name: "Cheerios", price: 6.99m);
var productWithPricePerWeight = new Product(code: "9501101530003", name: "Red Delicious apple", price: 2, isPriceByWeight: true);
var sut = new CashRegister(new[] { productWithPricePerItem, productWithPricePerWeight });
//act
sut.Scan(productWithPricePerItem.Code);
sut.Scan(productWithPricePerWeight.Code, weightKg: 0.3);
var totalPrice = sut.CalculatePrice();
Assert.That(totalPrice, Is.EqualTo(7.59));
}
public void Can_calculate_price_for_bulk_discount_product()
{
//setup
var product = new Product(code: "9501101530004", name: "Nutella", price: 5);
var bulkDiscountList = new BulkDiscount(bulkDiscountProducts: new[] { product }, quantity: 3);
var sut = new CashRegister(products: new[] { product }, discounts: new [] { bulkDiscountList });
//act
sut.Scan(product.Code);
sut.Scan(product.Code);
sut.Scan(product.Code);
var totalPrice = sut.CalculatePrice();
//3 * 5 - 5 = 10
Assert.That(totalPrice, Is.EqualTo(10m));
}
public void Can_get_discount_with_coupon()
{
//setup
var product1 = new Product(code: "9501101530005", name: "Cheese set", price: 30m);
var product2 = new Product(code: "9501101530006", name: "Hennessy cognac", price: 70);
var discount = new CouponDiscount(threshold: 100m, discount: 5m);
var sut = new CashRegister(new[] { product1, product2 }, new [] { discount });
//act
sut.Scan(product1.Code);
sut.Scan(product2.Code);
var totalPrice = sut.CalculatePrice();
Assert.That(totalPrice, Is.EqualTo(95));
}
public void Can_calculate_price_for_bulk_discount_product_and_regular_price_product()
{
//setup
var regularPriceProduct = new Product(code: "9501101530004", name: "Chewing gum", price: 1.50m);
var bulkDiscountProduct = new Product(code: "9501101530003", name: "Nutella", price: 5);
var bulkDiscountList = new BulkDiscount(bulkDiscountProducts: new[] { bulkDiscountProduct }, quantity: 2);
var sut = new CashRegister(products: new[] { regularPriceProduct, bulkDiscountProduct }, discounts: new[] { bulkDiscountList });
//act
sut.Scan(regularPriceProduct.Code);
sut.Scan(regularPriceProduct.Code);
sut.Scan(bulkDiscountProduct.Code);
sut.Scan(bulkDiscountProduct.Code);
sut.Scan(bulkDiscountProduct.Code);
var totalPrice = sut.CalculatePrice();
//(1.50 * 2) + (5 * 3) - 5 = 13
Assert.That(totalPrice, Is.EqualTo(13m));
}
public void Can_get_several_bulk_discounts()
{
/* TODO: need to implement further calculation for cases
* like the following:
* if product quantity required to get a discount is 2, but
* shopping cart has 4 such products
*/
//setup
var product = new Product(code: "9501101530004", name: "Nutella", price: 5);
var bulkDiscountProduct = new BulkDiscount(bulkDiscountProducts: new[] { product }, quantity: 2);
var sut = new CashRegister(new[] { product }, new[] { bulkDiscountProduct });
//act
sut.Scan(product.Code);
sut.Scan(product.Code);
sut.Scan(product.Code);
sut.Scan(product.Code);
var totalPrice = sut.CalculatePrice();
Assert.That(totalPrice, Is.EqualTo(10));
}