public void Given_Cart_When_DiscountedProductFoundBananas_And_AssociatedProductsFound_Then_ApplyCorrectDiscount(
int bananasCount, int orangesCount, decimal expectedDiscount, string expectedDescription)
{
// Arrange
var prerequisite = new RequiredProductPerDiscount("Oranges", 10);
var items = new List <CartItem>
{
new CartItem(new Product("Milk", 1.0m), 1),
new CartItem(new Product("Tomato", 0.50m), 1),
new CartItem(new Product("Bananas", 1.30m), bananasCount),
new CartItem(new Product("Oranges", 1.50m), orangesCount)
};
var sut = new MultiBuyPercentageDiscount("Bananas", 100, prerequisite);
// Act
var result = sut.Apply(items);
// Assert
Assert.Collection(result, d =>
{
Assert.Equal(expectedDescription, d.Description);
Assert.Equal(expectedDiscount, d.Amount);
});
}
public void Given_Cart_When_NoDiscountedProductFound_Then_NoDiscountApplies()
{
// Arrange
var prerequisite = new RequiredProductPerDiscount("Soup", 2);
var items = new List <CartItem>
{
new CartItem(new Product("Milk", 1.0m), 1),
new CartItem(new Product("Tomato", 0.50m), 1)
};
var sut = new MultiBuyPercentageDiscount("Bread", 50, prerequisite);
// Act
var result = sut.Apply(items);
// Assert
Assert.Empty(result);
}