public void IfNoGiftCardsAppliedNoUsagesShouldBeCreated()
{
var order = new Order();
GiftCardApplier giftCardApplier = new GiftCardApplierBuilder().Build();
order = giftCardApplier.Apply(new List<GiftCard>(), order);
order.GiftCardUsages.Should().BeEmpty();
}
public void IfTheCardValueIsGreaterThanTheTotalOnlyTheTotalAmountShouldBeApplied()
{
var order = new Order {Total = 50};
var giftCard1 = new GiftCard {Value = 100};
var giftCards = new List<GiftCard> {giftCard1};
GiftCardApplier giftCardApplier = new GiftCardApplierBuilder().Build();
order = giftCardApplier.Apply(giftCards, order);
order.GiftCardUsages.Should().HaveCount(1);
order.GiftCardUsages[0].Amount.Should().Be(50);
}
public void IfAGiftCardWithLessValueThanTheTotalIsAddedItShouldBeUsedInFull()
{
var order = new Order {Total = 50};
var giftCard = new GiftCard {Value = 25};
var giftCards = new List<GiftCard> {giftCard};
GiftCardApplier giftCardApplier = new GiftCardApplierBuilder().Build();
order = giftCardApplier.Apply(giftCards, order);
order.GiftCardUsages.Should().HaveCount(1);
order.GiftCardUsages[0].Amount.Should().Be(25);
giftCard.GiftCardUsages.Should().HaveCount(1);
giftCard.GiftCardUsages[0].Should().Be(order.GiftCardUsages[0]);
}
public void IfASecondCardTakesItOverTheThresholdTheFullAmountShouldBeDrawnFromTheFirstThenTheRemainerFromTheSecond()
{
var order = new Order {Total = 50};
var giftCard1 = new GiftCard {Value = 10};
var giftCard2 = new GiftCard {Value = 100};
var giftCards = new List<GiftCard> {giftCard1,giftCard2};
GiftCardApplier giftCardApplier = new GiftCardApplierBuilder().Build();
order = giftCardApplier.Apply(giftCards, order);
order.GiftCardUsages.Should().HaveCount(2);
order.GiftCardUsages[0].Amount.Should().Be(10);
order.GiftCardUsages[1].Amount.Should().Be(40);
giftCard1.AvailableAmount.Should().Be(0);
giftCard2.AvailableAmount.Should().Be(60);
}
public void MultipleCardsShouldBeAppliedInFullIfTotalIsLessThanTheTotal()
{
var order = new Order {Total = 50};
var giftCard1 = new GiftCard {Value = 12};
var giftCard2 = new GiftCard {Value = 13};
var giftCards = new List<GiftCard> {giftCard1, giftCard2};
GiftCardApplier giftCardApplier = new GiftCardApplierBuilder().Build();
order = giftCardApplier.Apply(giftCards, order);
order.GiftCardUsages.Should().HaveCount(2);
order.GiftCardUsages[0].Amount.Should().Be(12);
order.GiftCardUsages[1].Amount.Should().Be(13);
giftCard1.GiftCardUsages.Should().HaveCount(1);
giftCard2.GiftCardUsages.Should().HaveCount(1);
}