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 TestBasketSubtractFromTotalLessThanZero()
{
BasketItemModel basketItemApple = new BasketItemModel(_apple);
BasketModel basket = new BasketModel();
basket.AddOrUpdateBasket(basketItemApple);
basket.AddOrUpdateBasket(basketItemApple);
Assert.AreEqual(2, basket.Total);
basket.SubtractFromTotal(3);
Assert.AreEqual(0, basket.Total);
}
public void TestAddNewItemAndUpdateBasket()
{
BasketItemModel basketItem = new BasketItemModel(_apple);
BasketModel basket = new BasketModel();
basket.AddOrUpdateBasket(basketItem);
Assert.AreEqual(1, basket.Basket.Count);
Assert.AreEqual(1, basket.Total);
basket.AddOrUpdateBasket(basketItem);
Assert.AreEqual(1, basket.Basket.Count);
Assert.AreEqual(2, basket.Total);
}
public void TestAddThreeUniqueItemsToBasket()
{
BasketItemModel basketItemApple = new BasketItemModel(_apple);
BasketItemModel basketItemBanana = new BasketItemModel(_banana);
BasketItemModel basketItemOrange = new BasketItemModel(_orange);
BasketModel basket = new BasketModel();
basket.AddOrUpdateBasket(basketItemApple);
basket.AddOrUpdateBasket(basketItemBanana);
basket.AddOrUpdateBasket(basketItemOrange);
Assert.AreEqual(3, basket.Basket.Count);
Assert.AreEqual(6, basket.Total);
}
public void TestBasketItemMeetsPromotionThreshold()
{
List <PromotionModel> promotions = new List <PromotionModel> {
_orangeBuyOneGetOneHalfOff
};
BasketItemModel orangeBasketItem = new BasketItemModel(_orange);
BasketModel basket = new BasketModel();
basket.AddOrUpdateBasket(orangeBasketItem);
basket.AddOrUpdateBasket(orangeBasketItem);
IPromotionService promotionService = new PromotionService();
promotionService.ApplyPromotionsToBasket(basket, promotions);
Assert.AreEqual(1, basket.Basket.Count);
Assert.AreEqual(3, basket.Total);
Assert.IsTrue(basket.Basket[0].Discount != null);
Assert.AreEqual("Orange", basket.Basket[0].ItemName);
Assert.AreEqual(2, basket.Basket[0].ItemQuantity);
}
public void TestApplyingSamePromotionTwiceToBasketWithSameTwoItems()
{
List <PromotionModel> promotions = new List <PromotionModel> {
_appleDiscount
};
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(1M, basket.Basket[0].Discount.TotalDiscountAmount);
Assert.AreEqual(2, basket.Basket[0].ItemQuantity);
}
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);
}
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);
}
/// <summary>
/// Takes the user input basket and adds the item to the GroceryKiosk BasketModel.
/// </summary>
/// <param name="userBasket"></param>
/// <param name="kioskItems"></param>
/// <returns></returns>
public static BasketModel GetItemAndAddOrUpdateBasket(string[] userBasket, List <ItemModel> kioskItems)
{
BasketModel basket = new BasketModel();
foreach (var itemName in userBasket)
{
ItemModel item =
kioskItems.FirstOrDefault(
x => string.Equals(x.ItemName, itemName, StringComparison.CurrentCultureIgnoreCase));
if (item == null)
{
continue;
}
BasketItemModel basketItem = new BasketItemModel(item);
basket.AddOrUpdateBasket(basketItem);
}
return(basket);
}