public void HandleDiscountForNotFindingCombination()
{
CombinationBasedDiscount combinationBasedDiscount = new CombinationBasedDiscount();
Cart cart = new Cart();
cart.Items = new List <CartItem>();
cart.Items.Add(new CartItem()
{
Quantity = 10,
ProductInfo = new ProductInfo("C", 20)
});
combinationBasedDiscount.HandleDiscount(cart);
Assert.AreEqual(200, cart.TotalPrice);
}
public void HandleDiscountForMultipleCorrectCombination()
{
CombinationBasedDiscount combinationBasedDiscount = new CombinationBasedDiscount();
Cart cart = new Cart();
cart.Items = new List <CartItem>();
cart.Items.Add(new CartItem()
{
Quantity = 4,
ProductInfo = new ProductInfo("C", 20)
});
cart.Items.Add(new CartItem()
{
Quantity = 5,
ProductInfo = new ProductInfo("D", 15)
});
combinationBasedDiscount.HandleDiscount(cart);
Assert.AreEqual(135, cart.TotalPrice);
}
public void HandleDiscountForMultipleCorrectCombinationWithNegativeQuantity()
{
CombinationBasedDiscount combinationBasedDiscount = new CombinationBasedDiscount();
Cart cart = new Cart();
cart.Items = new List <CartItem>();
cart.Items.Add(new CartItem()
{
Quantity = -4,
ProductInfo = new ProductInfo("C", 20)
});
cart.Items.Add(new CartItem()
{
Quantity = -5,
ProductInfo = new ProductInfo("D", 15)
});
combinationBasedDiscount.HandleDiscount(cart);
// handle negative price befoe applying promotion
Assert.AreEqual(-155, cart.TotalPrice);
}
public void CombinationBasedDiscount_SetNextRule_ShouldNotFailForNull()
{
CombinationBasedDiscount combinationBasedDiscount = new CombinationBasedDiscount();
combinationBasedDiscount.SetNextRule(null);
}
public void CombinationBasedDiscount_ShouldNotFailForEmptyCart()
{
CombinationBasedDiscount combinationBasedDiscount = new CombinationBasedDiscount();
combinationBasedDiscount.HandleDiscount(new Cart());
}
public void CombinationBasedDiscount_ShouldNotFailForNull()
{
CombinationBasedDiscount combinationBasedDiscount = new CombinationBasedDiscount();
combinationBasedDiscount.HandleDiscount(null);
}
