public void CalculateDiscount_IfItemsNotEmptyOrNull_ShouldCalculateDiscount()
{
//arrange
var expected = 0.20M;
var orchestrator = new DiscountOrchestrator();
//act
var actual = orchestrator.CalculateDiscount(ItemsList(), GetOffer());
//assert
actual.Should().Be(expected);
}
public void CalculateDiscount_IfItemsEmpty_ShouldReturnZero()
{
//arrange
var expected = 0.0m;
var orchestrator = new DiscountOrchestrator();
//act
var actual = orchestrator.CalculateDiscount(new List <Item>(), GetOffer());
//assert
actual.Should().Be(expected);
}