public void CalculateDiscount_WithoutAnyEntries_ReturnsNoDiscount()
{
var testRule = new TenPercentOffInDecemberDiscountRule();
var basketEntries = new List <BasketEntry>();
var discount = testRule.CalculateDiscount(basketEntries);
Assert.AreEqual(0M, discount);
}
public void CalculateDiscount_WithEntries_AndInDecember_ReturnsCorrectDiscount()
{
var testRule = new TenPercentOffInDecemberDiscountRule(new DateTime(2000, 12, 1));
var basketEntries = new List <BasketEntry>(new[] {
new BasketEntry(new Item(name: "Test1", price: 1), quantity: 1),
new BasketEntry(new Item(name: "Test2", price: 2), quantity: 1),
});
var discount = testRule.CalculateDiscount(basketEntries);
Assert.AreEqual(0.3M, discount);
}