public Basket(EDiscountType discountType)
{
_products = new List <Product>();
// Here the discount strategy is defined, according to a desired kind of discount type.
_discountStrategy = DiscountStrategyFactory.DiscountStrategyFor(discountType);
}
static void Main(string[] args)
{
IBasketDiscountStrategy basketDiscountStrategy = BasketDiscountFactory.Create(DiscountType.MoneyOff);
Basket basket = new Basket(basketDiscountStrategy)
{
TotalCost = 100
};
decimal total = basket.GetTotalCostAfterDiscount();
Console.WriteLine("原价100，打折后{0}", total);
Console.Read();
}
public void BasketDiscountFactory_Should_Return_BasketDiscountPercentageOff_When_Passed_DiscountType_Of_PercentageOff()
{
IBasketDiscountStrategy basketDiscountStrategy = BasketDiscountFactory.GetDiscount(DiscountType.PercentageOff);
Assert.That(basketDiscountStrategy, Is.TypeOf(typeof(BasketDiscountPercentageOff)));
}
public Basket(IBasketDiscountStrategy basketDiscountStrategy)
{
this._basketDiscountStrategy = basketDiscountStrategy;
}
public Basket(DiscountType type)
{
this._strategy = BasketDiscountFactory.GetDiscount(type);
}
/// <summary>
/// 通过构造函数实现创建具体的打折策略对象
/// </summary>
/// <param name="discountType"></param>
public Basket(DiscountType discountType)
{
//根据枚举类型使用工厂方法创建指定的打折策略（都实现了IBasketDiscountStrategy接口）
//实现了该接口的具体实现类中都实现了GetTotalCostAfterApplyingDiscountTo方法实现打折
_basketDiscount = BasketDiscountFactory.GetDiscount(discountType);
}
public Basket(DiscountType discountType)
{
_basketDiscount = BasketDiscountFactory.GetDiscount(discountType);
}
/// <summary>
/// Defines a discount type to be applied over all products of basket.
/// </summary>
/// <param name="discountType">Discount type which will be applied over the products list.</param>
public void SetDiscountType(EDiscountType discountType)
{
_discountStrategy = DiscountStrategyFactory.DiscountStrategyFor(discountType);
}
public Basket(DiscountTypeEnum discountType)
{
_basketDiscountStrategy = BasketDiscountFactory.GetDiscount(discountType);
}
