public void Scenario1()
{
var basket = new Basket();
var checkout = new CheckoutService();
basket.Add(TestData.Bread);
basket.Add(TestData.Butter);
basket.Add(TestData.Milk);
Assert.Equal(2.95m, checkout.CalculateTotal(basket));
}
public void Given0BooksItShouldReturn0()
{
//Arrange
ICheckoutService checkout = new CheckoutService(_pricePerBook, _discounts);
var cart = new ShoppingCart()
{
Items = new int[0]
};
var expectedResult = 0m;
//Act
var result = checkout.CalculateTotal(cart);
//Assert
Assert.AreEqual(expectedResult, result);
}
public void Given4BooksItShouldApply2Discounts()
{
//Arrange
ICheckoutService checkout = new CheckoutService(_pricePerBook, _discounts);
var cart = new ShoppingCart()
{
Items = new[] { PotterBooks.FOURTH, PotterBooks.FOURTH, PotterBooks.FIFTH, PotterBooks.FIFTH }
};
var expectedResult = 30.4m;
//Act
var result = checkout.CalculateTotal(cart);
//Assert
Assert.AreEqual(expectedResult, result);
}
public void Given3BooksItShouldReturnDiscountedPrice()
{
//Arrange
ICheckoutService checkout = new CheckoutService(_pricePerBook, _discounts);
var cart = new ShoppingCart()
{
Items = new[] { PotterBooks.FIRST, PotterBooks.SECOND, PotterBooks.SECOND }
};
var expectedResult = 23.2m;
//Act
var result = checkout.CalculateTotal(cart);
//Assert
Assert.AreEqual(expectedResult, result);
}