public void ShoppingBasket_CheckCalculateTotalPrice_WithPercentageDiscount()
{
// Arrange
var percentageDiscount = new Mock <IDiscount>();
percentageDiscount.Setup(mock => mock.DiscountsApplicable(It.IsAny <IEnumerable <ProductQuantity> >()))
.Returns(DiscountHelper.CreatePercentageAppliedDiscount());
var shoppingBasket = new ShoppingBasket(new List <IDiscount> {
percentageDiscount.Object
});
shoppingBasket.AddProducts(ProductQuantityHelper.CreateProducts());
// Act
var discountsTotal = shoppingBasket.GetBasketDiscounts().Sum(item => item.Amount);
var result = shoppingBasket.SubTotal - discountsTotal;
// Assert
Assert.AreEqual(result, 3.20m);
}
