public void DiscountShouldOnlyApplyToPieAndChips(
PieAndChipsMealDealDiscount sut)
{
IEnumerable <Discount> results = sut.CalculateDiscounts(new ProductFaker().Generate(3));
results.Should().BeEmpty();
}
public void NoDiscountShouldBeAppliedToEmptyProducts(
PieAndChipsMealDealDiscount sut)
{
IEnumerable <Discount> results = sut.CalculateDiscounts(Enumerable.Empty <IProduct>());
results.Should().BeEmpty();
}
public void ShouldThrowArgumentNullExceptionWhenProductsNull(
PieAndChipsMealDealDiscount sut)
{
Action a = () => sut.CalculateDiscounts(null !);
a.Should().Throw <ArgumentNullException>();
}
public void ShouldInitialiseDiscountPercent()
{
DiscountPercent discountPercent = new DiscountPercentFaker().Generate();
PieAndChipsMealDealDiscount sut = new PieAndChipsMealDealDiscount(discountPercent);
sut.DiscountPercent.Should().Be(discountPercent);
}
public void NoPieShouldNotBeIncludedInDiscount(
PieAndChipsMealDealDiscount sut)
{
PortionOfChips portionOfChips = new PortionOfChips(new PriceFaker().Generate());
IEnumerable <Discount> results = sut.CalculateDiscounts(new[] { portionOfChips });
results.Should().BeEmpty();
}
public void NoChipsShouldNotBeIncludedInDiscount(
PieAndChipsMealDealDiscount sut)
{
Pie pie = new Pie(new PriceFaker().Generate(), LocalDate.MaxIsoValue);
IEnumerable <Discount> results = sut.CalculateDiscounts(new[] { pie });
results.Should().BeEmpty();
}
public void PieAndPortionOfChipsShouldBeDiscounted(
PieAndChipsMealDealDiscount sut)
{
PriceFaker priceFaker = new PriceFaker();
Pie pie = new Pie(priceFaker.Generate(), LocalDate.MaxIsoValue);
PortionOfChips portionOfChips = new PortionOfChips(priceFaker.Generate());
IEnumerable <Discount> results = sut.CalculateDiscounts(new IProduct[] { pie, portionOfChips });
Price expectedDicountPrice = new Price((pie.Price + portionOfChips.Price) * (sut.DiscountPercent / 100.0m));
results.Should().Contain(new Discount(expectedDicountPrice, pie, portionOfChips));
}
