public void NonApplesAreTheSamePrice()
{
var offer = new AppleTenPercentDiscountOffer();
var success = offer.TryApplyDiscount(new[] { Mango() }, out var discount);
success.Should().BeFalse();
}
public void MultipleApplesAreTenPercentOff()
{
var offer = new AppleTenPercentDiscountOffer();
var success = offer.TryApplyDiscount(new[] { Apple(), Apple(), Apple() }, out var discount);
success.Should().BeTrue();
discount.BaseAmount.Should().Be(applePrice * 0.1m);
discount.TimesApplied.Should().Be(3);
}