public void MultibuyOnlyOneRelatedProducts()
{
ISpecialOffer offer = new MultibuyOffer("Beans", 2, "Soup", 1);
var discountProduct = offer.DetermineSpecialOffer(_products);
Assert.IsNull(discountProduct);
}
public void MultibuyBothRelatedProductsNotEnoughRequired()
{
//need two beans to get the offer, so shouldn't give an offer
ISpecialOffer offer = new MultibuyOffer("Beans", 2, "Eggs", 1);
var discountProduct = offer.DetermineSpecialOffer(_products);
Assert.IsNull(discountProduct);
}
public void MultibuyNoRelatedProducts()
{
//no products involved in the deal in the list
ISpecialOffer offer = new MultibuyOffer("Soup", 2, "Milk", 1);
var discountProduct = offer.DetermineSpecialOffer(_products);
Assert.IsNull(discountProduct);
}
public void MultibuyBothRelatedProductsMultipleProductsOffer()
{
//have two beans, can get two eggs discounted, two eggs are present so should get two eggs discounted
var _twoBeansTwoEggs = new List <Product>()
{
new Product("Beans", 0.9m), new Product("Beans", 0.9m), new Product("Eggs", 0.3m), new Product("Eggs", 0.3m)
};
ISpecialOffer offer = new MultibuyOffer("Beans", 2, "Eggs", 2);
var discountProduct = offer.DetermineSpecialOffer(_twoBeansTwoEggs);
Assert.AreEqual <decimal>(-0.6m, discountProduct.Price);
Assert.AreEqual("Discount on Eggs", discountProduct.ProductName);
}
public void MultibuyBothRelatedProductsMorePresentThanOffer()
{
//have two beans, can get one egg discounted even though two eggs are present
var _twoBeansTwoEggs = new List <Product>()
{
new Product("Beans", 0.9m), new Product("Beans", 0.9m), new Product("Eggs", 0.3m), new Product("Eggs", 0.3m)
};
ISpecialOffer offer = new MultibuyOffer("Beans", 2, "Eggs", 1);
var discountProduct = offer.DetermineSpecialOffer(_twoBeansTwoEggs);
Assert.AreEqual <decimal>(-0.3m, discountProduct.Price);
Assert.AreEqual("Discount on Eggs", discountProduct.ProductName);
}
public void MultibuyBothRelatedProductsMoreOfferThanPresent()
{
//have two beans, could get two eggs discounted, but only one egg is present
//thus only one egg is discounted
var _twoBeansOneEggs = new List <Product>()
{
new Product("Beans", 0.9m), new Product("Beans", 0.9m), new Product("Eggs", 0.3m)
};
ISpecialOffer offer = new MultibuyOffer("Beans", 2, "Eggs", 2);
var discountProduct = offer.DetermineSpecialOffer(_twoBeansOneEggs);
Assert.AreEqual <decimal>(-0.3m, discountProduct.Price);
Assert.AreEqual("Discount on Eggs", discountProduct.ProductName);
}
public void MultibuyNoOfferTest(int cheeseCount)
{
var productName = "Cheese";
var numberNeeded = 3;
var offer = new MultibuyOffer(productName, numberNeeded);
var products = new Dictionary <Product, int>();
products.Add(new Product("Cheese", 0.5m), cheeseCount);
var discountedProduct = offer.DetermineSpecialOffer(products);
Assert.IsNull(discountedProduct);
}
public void MultibuyDetermineOfferTest(int cheeseCount, decimal expectedDiscountValue)
{
var productName = "Cheese";
var numberNeeded = 3;
var offer = new MultibuyOffer(productName, numberNeeded);
var products = new Dictionary <Product, int>();
products.Add(new Product("Cheese", 0.5m), cheeseCount);
var expectedDiscountProduct = new Product("Cheese Multibuy", expectedDiscountValue);
var discountedProduct = offer.DetermineSpecialOffer(products);
Assert.AreEqual(expectedDiscountProduct, discountedProduct);
}