public void AddItem_AddTwoValidProductsToCart_TotalEqualsItemsPrice()
{
IProductRepository products = A.Fake<IProductRepository>();
ShoppingCart shoppingCart = new ShoppingCart(products);
A.CallTo(() => products.GetProductById("item-1")).Returns(new Product("item-1", "Banana", 14.5));
A.CallTo(() => products.GetProductById("item-2")).Returns(new Product("item-2", "Orange", 2.5));
shoppingCart.AddItem("item-1");
shoppingCart.AddItem("item-2");
Assert.That(shoppingCart.Total, Is.EqualTo(17));
}
public void Clear_AddInvalidItemToCartThenClear_ThrowUnknownProductException()
{
IProductRepository products = A.Fake<IProductRepository>();
A.CallTo(() => products.GetProductById(A<string>.Ignored)).Throws(new UnknownProductException("UnknownProductException was thrown."));
ShoppingCart shoppingCart = new ShoppingCart(products);
Assert.Throws<UnknownProductException>(() => shoppingCart.AddItem("item-999"));
}
public void Clear_AddValidItemToCartThenClear_TotalEquals0()
{
IProductRepository products = A.Fake<IProductRepository>();
ShoppingCart shoppingCart = new ShoppingCart(products);
A.CallTo(() => products.GetProductById("item-1")).Returns(new Product("item-1", "Banana", 14.5));
shoppingCart.AddItem("item-1");
shoppingCart.Clear();
Assert.That(shoppingCart.Total, Is.EqualTo(0));
}
public void AddItem_AddValidProductToCart_TotalEqualsItemPrice()
{
// Arrange
IProductRepository products = A.Fake<IProductRepository>();
ShoppingCart shoppingCart = new ShoppingCart(products);
A.CallTo(() => products.GetProductById("item-1")).Returns(new Product("item-1", "Banana", 14.5));
// Act
shoppingCart.AddItem("item-1");
// Assert
Assert.AreEqual(shoppingCart.Total, 14.5);
}
