public void GivenEmptyCart_WhenItemsAddedAndDiscountPlusServiceTaxApplied_ThenReturnsCorrectTotalPrice()
{
// Arrange
var firstProduct = new Product("Dove Soap", 39.99);
var secondProduct = new Product("Axe Deo", 89.99);
Func <double, double> additionalProcessing = (tp) => tp + (tp * 12.5 / 100);
var cart = new TotalPriceAdditionalProcessingShoppingCartDecorator(
new TotalPriceAdditionalProcessingShoppingCartDecorator(
new RunningProductsCountShoppingCart(),
(a) =>
{
if (a > 500)
{
return(a - (a * 20 / 100));
}
return(a);
}),
additionalProcessing
);
// Act
cart.AddProduct(firstProduct, 5);
cart.AddProduct(secondProduct, 4);
// Assert
Assert.That(cart.GetTotalPrice(), Is.EqualTo(503.92));
}
public void GivenNoObject_WhenDecoratorObjectCreated_ThenReturnsAnInstanceOfIProductAddingShoppingCart()
{
// Arrange, Act,
Func <double, double> additionalProcessing = (a) => a;
var decorator = new TotalPriceAdditionalProcessingShoppingCartDecorator(Mock.Of <IProductAddingShoppingCart>(), additionalProcessing);
// Assert;
Assert.That(decorator, Is.InstanceOf(typeof(IProductAddingShoppingCart)));
}
public void GivenNoObject_WhenDecoratorObjectCreated_ThenReturnsAnInstanceOfIProductAddingShoppingCart(int addToTotalPrice)
{
// Arrange, Act,
Func <double, double> additionalProcessing = (a) => a + addToTotalPrice;
var decorator = new TotalPriceAdditionalProcessingShoppingCartDecorator(new RunningProductsCountShoppingCart(), additionalProcessing);
decorator.AddProduct(new Product("Dove Soap", 39.99), 5);
// Assert;
Assert.That(decorator.GetTotalPrice(), Is.EqualTo(199.95 + addToTotalPrice));
}
public void GivenEmptyCart_WhenItemsAddedAndServiceTaxApplied_ThenReturnsCorrectTotalPrice()
{
// Arrange
var firstProduct = new Product("Dove Soap", 39.99);
var secondProduct = new Product("Axe Deo", 99.99);
Func <double, double> additionalProcessing = (tp) => tp + (tp * 12.5 / 100);
var cart = new TotalPriceAdditionalProcessingShoppingCartDecorator(new RunningProductsCountShoppingCart(), additionalProcessing);
// Act
cart.AddProduct(firstProduct, 2);
cart.AddProduct(secondProduct, 2);
// Assert
Assert.That(cart.GetTotalPrice(), Is.EqualTo(314.96));
}
