public void Compran2LibrosIguales()
{
// Arrange
var calc = new PriceCalculator();
var cart = new ShoppingCart();
float expectedPrice = pricePerBook * 2;
// Act
cart.AddBook(new Book("Libro 1", pricePerBook));
cart.AddBook(new Book("Libro 1", pricePerBook));
float totalPrice = calc.CalculatePrice(cart.Books);
// Assert
Assert.AreEqual(expectedPrice, totalPrice);
}
public void Compran3LibrosDistintos()
{
// Arrange
var calc = new PriceCalculator();
var cart = new ShoppingCart();
float discount = 0.1F;
float expectedPrice = pricePerBook * 3 * (1 - discount);
// Act
cart.AddBook(new Book("Libro 1", pricePerBook));
cart.AddBook(new Book("Libro 2", pricePerBook));
cart.AddBook(new Book("Libro 3", pricePerBook));
float totalPrice = calc.CalculatePrice(cart.Books);
// Assert
Assert.AreEqual(expectedPrice, totalPrice);
}
public void Compran5CopiasDeTodaLaColeccion()
{
// Arrange
var calc = new PriceCalculator();
var cart = new ShoppingCart();
float discount = 0.45F;
float expectedPrice = (pricePerBook * 7 * (1 - discount)) * 5;
// Act
CargarColeccionCompleta(cart);
CargarColeccionCompleta(cart);
CargarColeccionCompleta(cart);
CargarColeccionCompleta(cart);
CargarColeccionCompleta(cart);
float totalPrice = calc.CalculatePrice(cart.Books);
// Assert
Assert.AreEqual(expectedPrice, totalPrice);
}