public void GiftVouchersCanOnlyBeRedeemedAgainstNonGiftVoucherProducts()
{
//Arrange
var expectedTotal = 30.00m;
var basket = new Basket();
basket.Add(ProductService.Get(ProductService.ProductCode.Hat));
basket.Add(ProductService.Get(ProductService.ProductCode.GiftVoucher));
var giftVoucher1 = VoucherService.Get("XXX-XXX");
var giftVoucher2 = VoucherService.Get("XXX-XXX");
var giftVoucher3 = VoucherService.Get("XXX-XXX");
var giftVoucher4 = VoucherService.Get("XXX-XXX");
var giftVoucher5 = VoucherService.Get("XXX-XXX");
var giftVoucher6 = VoucherService.Get("XXX-XXX");
//Act
basket.ApplyVoucher(giftVoucher1);
basket.ApplyVoucher(giftVoucher2);
basket.ApplyVoucher(giftVoucher3);
basket.ApplyVoucher(giftVoucher4);
basket.ApplyVoucher(giftVoucher5);
basket.ApplyVoucher(giftVoucher6); //Edge case: sixth voucher should not be applied
//Assert
Assert.Equal(expectedTotal, basket.DiscountedTotal);
}
public void DiscountCannotBeNegative()
{
//Arrange
var expectedTotal = 0.00m;
var basket = new Basket();
basket.Add(ProductService.Get(ProductService.ProductCode.HeadLight));
var offerVoucher1 = VoucherService.Get("XXX-XXX");
//Act
basket.ApplyVoucher(offerVoucher1);
//Assert
Assert.Equal(expectedTotal, basket.DiscountedTotal);
}
public void Basket1()
{
//Arrange
var expectedTotal = 60.15m;
var basket = new Basket();
basket.Add(ProductService.Get(ProductService.ProductCode.Hat2));
basket.Add(ProductService.Get(ProductService.ProductCode.Jumper2));
var giftVoucher1 = VoucherService.Get("XXX-XXX");
//Act
basket.ApplyVoucher(giftVoucher1);
//Assert
Assert.Equal(expectedTotal, basket.DiscountedTotal);
}
public void PurchaseOfGiftVouchersDoNotContributeToDiscountableBasketTotal()
{
//Arrange
var expectedTotal = 55.00m;
var basket = new Basket();
basket.Add(ProductService.Get(ProductService.ProductCode.Hat));
basket.Add(ProductService.Get(ProductService.ProductCode.GiftVoucher));
var offerVoucher1 = VoucherService.Get("ZZZ-ZZZ");
//Act
basket.ApplyVoucher(offerVoucher1);
//Assert
Assert.Equal(expectedTotal, basket.DiscountedTotal);
}
public void Basket3()
{
//Arrange
var expectedTotal = 51.00m;
var basket = new Basket();
basket.Add(ProductService.Get(ProductService.ProductCode.Hat));
basket.Add(ProductService.Get(ProductService.ProductCode.Jumper));
basket.Add(ProductService.Get(ProductService.ProductCode.HeadLight));
var offerVoucher1 = VoucherService.Get("YYY-YYY");
//Act
basket.ApplyVoucher(offerVoucher1);
//Assert
Assert.Equal(expectedTotal, basket.DiscountedTotal);
}
public void CannotApplyTheSameVoucherTwice()
{
//Arrange
var expectedTotal = 46.00m;
var basket = new Basket();
basket.Add(ProductService.Get(ProductService.ProductCode.Hat));
basket.Add(ProductService.Get(ProductService.ProductCode.Jumper));
var giftVoucher1 = VoucherService.Get("XXX-XXX");
//Act
basket.ApplyVoucher(giftVoucher1);
basket.ApplyVoucher(giftVoucher1);
//Assert
Assert.Equal(expectedTotal, basket.DiscountedTotal);
}
public void Basket5()
{
//Arrange
var expectedTotal = 55.00m;
var basket = new Basket();
basket.Add(ProductService.Get(ProductService.ProductCode.Hat));
basket.Add(ProductService.Get(ProductService.ProductCode.GiftVoucher));
var offerVoucher1 = VoucherService.Get("ZZZ-ZZZ");
var expectedReason = new BasketTotalBelowThresholdReason(offerVoucher1, 25.00m);
//Act
basket.ApplyVoucher(offerVoucher1);
//Assert
Assert.Equal(expectedTotal, basket.DiscountedTotal);
Assert.Equal(expectedReason.Message, basket.VoucherResults.First().Message);
}
public void Basket4()
{
//Arrange
var expectedTotal = 41.00m;
var basket = new Basket();
basket.Add(ProductService.Get(ProductService.ProductCode.Hat));
basket.Add(ProductService.Get(ProductService.ProductCode.Jumper));
var giftVoucher1 = VoucherService.Get("XXX-XXX");
var offerVoucher1 = VoucherService.Get("ZZZ-ZZZ");
//Act
basket.ApplyVoucher(giftVoucher1);
basket.ApplyVoucher(offerVoucher1);
//Assert
Assert.Equal(expectedTotal, basket.DiscountedTotal);
}
public void Basket2()
{
//Arrange
var expectedTotal = 51.00m;
var basket = new Basket();
basket.Add(ProductService.Get(ProductService.ProductCode.Hat));
basket.Add(ProductService.Get(ProductService.ProductCode.Jumper));
var offerVoucher1 = VoucherService.Get("YYY-YYY");
var expectedReason = new NoApplicableProductsReason(offerVoucher1);
//Act
basket.ApplyVoucher(offerVoucher1);
//Assert
Assert.Equal(expectedTotal, basket.DiscountedTotal);
Assert.Equal(expectedReason.Message, basket.VoucherResults.First().Message);
}
public void MultipleGiftVouchersCanBeAppliedToABasket()
{
//Arrange
var expectedTotal = 41.00m;
var basket = new Basket();
basket.Add(ProductService.Get(ProductService.ProductCode.Hat));
basket.Add(ProductService.Get(ProductService.ProductCode.Jumper));
var giftVoucher1 = VoucherService.Get("XXX-XXX");
var giftVoucher2 = VoucherService.Get("XXX-XXX");
//Act
basket.ApplyVoucher(giftVoucher1);
basket.ApplyVoucher(giftVoucher2);
//Assert
Assert.Equal(expectedTotal, basket.DiscountedTotal);
}
public void OnlyASingleOfferVoucherCanBeAppliedToABasket()
{
//Arrange
var expectedTotal = 46.00m;
var basket = new Basket();
basket.Add(ProductService.Get(ProductService.ProductCode.Hat));
basket.Add(ProductService.Get(ProductService.ProductCode.Jumper));
var offerVoucher1 = VoucherService.Get("ZZZ-ZZZ");
var offerVoucher2 = VoucherService.Get("ZZZ-ZZZ");
//Act
basket.ApplyVoucher(offerVoucher1);
basket.ApplyVoucher(offerVoucher2);
//Assert
Assert.Equal(expectedTotal, basket.DiscountedTotal);
}
public void RemovingAnItemFromTheBasketAmendsDiscountRetroactively()
{
//Arrange
var expectedTotal = 51.00m;
var headlight = ProductService.Get(ProductService.ProductCode.HeadLight);
var basket = new Basket();
basket.Add(ProductService.Get(ProductService.ProductCode.Hat));
basket.Add(ProductService.Get(ProductService.ProductCode.Jumper));
basket.Add(headlight);
var offerVoucher1 = VoucherService.Get("YYY-YYY");
//Act
basket.ApplyVoucher(offerVoucher1);
basket.Remove(headlight);
//Assert
Assert.Equal(expectedTotal, basket.DiscountedTotal);
}
public void ThresholdMustBeMatchedOrExceeded()
{
//Arrange
var expectedTotal = 25.00m;
var basket = new Basket();
basket.Add(ProductService.Get(ProductService.ProductCode.Hat));
var offerVoucher1 = VoucherService.Get("ZZZ-ZZZ");
//Act
basket.ApplyVoucher(offerVoucher1);
//Assert
Assert.Equal(expectedTotal, basket.DiscountedTotal);
basket.Add(ProductService.Get(ProductService.ProductCode.Hat));
expectedTotal = 45.00m;
Assert.Equal(expectedTotal, basket.DiscountedTotal);
}
public void InvalidatedVouchersDisplayCorrectMessage()
{
//Arrange
var expectedTotal = 46.00m;
var headlight = ProductService.Get(ProductService.ProductCode.HeadLight);
var basket = new Basket();
basket.Add(ProductService.Get(ProductService.ProductCode.Hat));
basket.Add(ProductService.Get(ProductService.ProductCode.Jumper));
basket.Add(headlight);
var offerVoucher1 = VoucherService.Get("YYY-YYY");
var expectedReason = new NoApplicableProductsReason(offerVoucher1 as OfferVoucher);
//Act
basket.ApplyVoucher(offerVoucher1);
Assert.DoesNotContain(basket.VoucherResults, r => r is NoApplicableProductsReason);
basket.Remove(headlight);
//Assert
Assert.Equal(expectedReason.Message, basket.VoucherResults.First().Message);
}