[InlineData(TestData.ApplesSku, TestData.UOMUnits, 2, 1.55, 3, 1, 3.1, 3.1)] // buy 3 get 1 free but wrong unit
public void BuyManyGetSomeFree_Theory_When_Not_Same_Unit(string promoSku, string promoUnit, int buyQuantity, decimal unitPrice, int promoQuantity, int promoFree, decimal itemPrice, decimal itemPriceToPay)
{
// ARRANGE
var item = TestData.Apples(buyQuantity, unitPrice);
var promo = new BuyManyGetSomeFreePromotion(promoQuantity, promoFree, promoUnit, new Guid(promoSku));
var pricingItem = new PricingCartItem(item);
// ACT
Exception ex = Assert.Throws <ArgumentOutOfRangeException>(() => promo.Apply(pricingItem));
// ASSERT
Assert.Equal($"UnitOfMeasure (Parameter 'Unit of measure '{promoUnit}' is not compatible with '{item.UnitOfMeasure}'')", ex.Message);
}
[InlineData(TestData.ApplesSku, TestData.UOMKG, 12, 3.45, 6, 1, 41.4, 34.5)] // buy 6 get 1 free
public void BuyManyGetSomeFree_Theory_When_Exceed_The_Limit(string promoSku, string promoUnit, int buyQuantity, decimal unitPrice, int promoQuantity, int promoFree, decimal itemPrice, decimal itemPriceToPay)
{
// ARRANGE
var item = TestData.Apples(buyQuantity, unitPrice);
var promo = new BuyManyGetSomeFreePromotion(promoQuantity, promoFree, promoUnit, new Guid(promoSku));
var pricingItem = new PricingCartItem(item);
// ACT
promo.Apply(pricingItem);
// ASSERT
Assert.Equal(unitPrice * (decimal)pricingItem.Quantity, pricingItem.ItemPrice);
Assert.Equal(itemPrice, pricingItem.ItemPrice);
Assert.Equal(itemPriceToPay, pricingItem.ItemPriceToPay);
Assert.Equal(pricingItem.ItemPrice - pricingItem.ItemPriceToPay, pricingItem.ItemDiscount);
}
