public void Checkout_Basket_Calculate_Individual_Promotion_B_Items_No_Promotion_Item_Count()
{
// Arrange
ICalculatePromotionB calculatePromotionB2Items = new CalculatePromotionB(GenerateSpecifiedItemsBasket(2, "B", 15).Items);
// Assert
Assert.Equal(30, calculatePromotionB2Items.CalculatePromotionBCost());
}
public void Checkout_Basket_Calculate_Individual_Promotion_B_Mixed_Amount()
{
// Arrange
ICalculatePromotionB calculatePromotionB5Items = new CalculatePromotionB(GenerateSpecifiedItemsBasket(5, "B", 15).Items);
ICalculatePromotionB calculatePromotionB8Items = new CalculatePromotionB(GenerateSpecifiedItemsBasket(8, "B", 15).Items);
ICalculatePromotionB calculatePromotionB11Items = new CalculatePromotionB(GenerateSpecifiedItemsBasket(11, "B", 15).Items);
// Assert
Assert.Equal(70, calculatePromotionB5Items.CalculatePromotionBCost());
Assert.Equal(110, calculatePromotionB8Items.CalculatePromotionBCost());
Assert.Equal(150, calculatePromotionB11Items.CalculatePromotionBCost());
}
public void Checkout_Basket_Calculate_Individual_Promotion_B_Items_Only_Multiple_3_Item_Count()
{
// Arrange - Multples of 3 starting with 3.
ICalculatePromotionB calculatePromotionB3Items = new CalculatePromotionB(GenerateSpecifiedItemsBasket(3, "B", 15).Items);
ICalculatePromotionB calculatePromotionB6Items = new CalculatePromotionB(GenerateSpecifiedItemsBasket(6, "B", 15).Items);
ICalculatePromotionB calculatePromotionB9Items = new CalculatePromotionB(GenerateSpecifiedItemsBasket(9, "B", 15).Items);
ICalculatePromotionB calculatePromotionB12Items = new CalculatePromotionB(GenerateSpecifiedItemsBasket(12, "B", 15).Items);
// Assert
Assert.Equal(40, calculatePromotionB3Items.CalculatePromotionBCost());
Assert.Equal(80, calculatePromotionB6Items.CalculatePromotionBCost());
Assert.Equal(120, calculatePromotionB9Items.CalculatePromotionBCost());
Assert.Equal(160, calculatePromotionB12Items.CalculatePromotionBCost());
}