public void MoneyOffDiscountStrategyThrowsOnLowDiscount(
Product p,
decimal discount,
MoneyOffDiscountStrategy sut)
{
if (Math.Abs(discount) != 0)
{
discount = -discount;
}
Assert.Throws <InvalidDiscountException>(() => sut.DiscountProduct(p, discount));
}
public void MoneyOffDiscountStrategyThrowsOnHighDiscount(
Product p,
decimal discount,
MoneyOffDiscountStrategy sut)
{
while (discount < p.Price)
{
discount = discount + Math.Abs(discount);
}
Assert.Throws <InvalidDiscountException>(() => sut.DiscountProduct(p, discount));
}
public void MoneyOffDiscountStrategyCalculationIsCorrect(
Product p,
decimal discount,
MoneyOffDiscountStrategy sut)
{
if (discount > p.Price)
{
discount = discount - (discount - 1);
}
var actual = sut.DiscountProduct(p, discount);
Assert.Equal(p.Price - discount, actual);
}