public void TestIfMultiplePromotionsAddedForSameItemOnlyFirstIsTaken()
{
List <PromotionModel> promotions = new List <PromotionModel> {
_appleDiscount, _appleGroupDiscount
};
BasketItemModel appleBasketItem = new BasketItemModel(_apple);
BasketModel basket = new BasketModel();
basket.AddOrUpdateBasket(appleBasketItem);
basket.AddOrUpdateBasket(appleBasketItem);
IPromotionService promotionService = new PromotionService();
promotionService.ApplyPromotionsToBasket(basket, promotions);
Assert.AreEqual(1, basket.Basket.Count);
Assert.AreEqual(2, basket.Total);
Assert.IsTrue(basket.Basket[0].Discount != null);
Assert.AreEqual("Apple", basket.Basket[0].ItemName);
Assert.AreEqual(2, basket.Basket[0].ItemQuantity);
Assert.AreEqual(1, basket.Basket[0].Discount.ThresholdQuantity);
Assert.AreEqual(.5M, basket.Basket[0].Discount.DiscountAmount);
Assert.AreEqual(1, basket.Basket[0].Discount.TotalDiscountAmount);
}
public void TestApplyingMultiplePromotionsToMultipleBasketItems()
{
List <PromotionModel> promotions = new List <PromotionModel> {
_appleDiscount, _orangeBuyOneGetOneHalfOff, _bananaGroupDiscountOnThree
};
BasketItemModel orangeBasketItem = new BasketItemModel(_orange);
BasketItemModel appleBasketItem = new BasketItemModel(_apple);
BasketItemModel bananaBasketItem = new BasketItemModel(_banana);
BasketModel basket = new BasketModel();
basket.AddOrUpdateBasket(appleBasketItem);
basket.AddOrUpdateBasket(orangeBasketItem);
basket.AddOrUpdateBasket(bananaBasketItem);
basket.AddOrUpdateBasket(orangeBasketItem);
basket.AddOrUpdateBasket(bananaBasketItem);
basket.AddOrUpdateBasket(bananaBasketItem);
basket.AddOrUpdateBasket(appleBasketItem);
IPromotionService promotionService = new PromotionService();
promotionService.ApplyPromotionsToBasket(basket, promotions);
Assert.AreEqual(3, basket.Basket.Count);
Assert.AreEqual(7, basket.Total);
Assert.IsTrue(basket.Basket[0].Discount != null);
Assert.AreEqual("Apple", basket.Basket[0].ItemName);
Assert.AreEqual(2, basket.Basket[0].ItemQuantity);
Assert.AreEqual(1, basket.Basket[0].Discount.ThresholdQuantity);
Assert.AreEqual(.5M, basket.Basket[0].Discount.DiscountAmount);
Assert.AreEqual(1, basket.Basket[0].Discount.TotalDiscountAmount);
Assert.IsTrue(basket.Basket[1].Discount != null);
Assert.AreEqual("Orange", basket.Basket[1].ItemName);
Assert.AreEqual(2, basket.Basket[1].ItemQuantity);
Assert.AreEqual(2, basket.Basket[1].Discount.ThresholdQuantity);
Assert.AreEqual(1, basket.Basket[1].Discount.DiscountAmount);
Assert.AreEqual(1, basket.Basket[1].Discount.TotalDiscountAmount);
Assert.IsTrue(basket.Basket[2].Discount != null);
Assert.AreEqual("Banana", basket.Basket[2].ItemName);
Assert.AreEqual(3, basket.Basket[2].ItemQuantity);
Assert.AreEqual(3, basket.Basket[2].Discount.ThresholdQuantity);
Assert.AreEqual(1, basket.Basket[2].Discount.DiscountAmount);
Assert.AreEqual(1, basket.Basket[2].Discount.TotalDiscountAmount);
}
public void TestApplyingOnePromotionToBasketWithOneItem()
{
List <PromotionModel> promotions = new List <PromotionModel> {
_appleDiscount
};
BasketItemModel appleBasketItem = new BasketItemModel(_apple);
BasketModel basket = new BasketModel();
basket.AddOrUpdateBasket(appleBasketItem);
IPromotionService promotionService = new PromotionService();
promotionService.ApplyPromotionsToBasket(basket, promotions);
Assert.AreEqual(1, basket.Basket.Count);
Assert.AreEqual(1, basket.Total);
Assert.IsTrue(basket.Basket[0].Discount != null);
Assert.AreEqual(0.5M, basket.Basket[0].Discount.TotalDiscountAmount);
}
public void TestBasketItemFailsToMeetPromotionThreshold()
{
List <PromotionModel> promotions = new List <PromotionModel> {
_orangeBuyOneGetOneHalfOff
};
BasketItemModel orangeBasketItem = new BasketItemModel(_orange);
BasketModel basket = new BasketModel();
basket.AddOrUpdateBasket(orangeBasketItem);
IPromotionService promotionService = new PromotionService();
promotionService.ApplyPromotionsToBasket(basket, promotions);
Assert.AreEqual(1, basket.Basket.Count);
Assert.AreEqual(2, basket.Total);
Assert.IsTrue(basket.Basket[0].Discount == null);
Assert.AreEqual("Orange", basket.Basket[0].ItemName);
}
public void TestApplyingOnePromotionToBasketWithTwoDifferentItems()
{
List <PromotionModel> promotions = new List <PromotionModel> {
_appleDiscount
};
BasketItemModel appleBasketItem = new BasketItemModel(_apple);
BasketItemModel orangeBasketItem = new BasketItemModel(_orange);
BasketModel basket = new BasketModel();
basket.AddOrUpdateBasket(appleBasketItem);
basket.AddOrUpdateBasket(orangeBasketItem);
IPromotionService promotionService = new PromotionService();
promotionService.ApplyPromotionsToBasket(basket, promotions);
Assert.AreEqual(2, basket.Basket.Count);
Assert.AreEqual(3, basket.Total);
Assert.IsTrue(basket.Basket[0].Discount != null);
Assert.AreEqual("Apple", basket.Basket[0].ItemName);
Assert.IsTrue(basket.Basket[1].Discount == null);
Assert.AreEqual("Orange", basket.Basket[1].ItemName);
Assert.AreEqual(0.5M, basket.Basket[0].Discount.TotalDiscountAmount);
}
