public void CreateReturnsAnInstanceTest()
{
var checkout = _factory.Create(
new SkuDictionary()
{
{ 'A', new Sku("Item A", 10m) },
{ 'B', new Sku("Item B", 2m) }
},
new OfferDictionary()
{
{ 'A', new QtyBasedOffer(2, 15m) }
}
);
Assert.NotNull(checkout);
Assert.IsInstanceOf <Checkout>(checkout);
Assert.That("Item A", Is.EqualTo(checkout.GetSkuDetails('A').Description));
Assert.That("Item B", Is.EqualTo(checkout.GetSkuDetails('B').Description));
}
public void CheckoutTotalPriceOnAddingNewItemsTest()
{
var checkout = _factory.Create(_availableSkus, _offers);
checkout.AddItemToBasket('A');
Assert.That(50, Is.EqualTo(checkout.TotalPrice()));
checkout.AddItemToBasket('B');
Assert.That(80, Is.EqualTo(checkout.TotalPrice()));
checkout.AddItemToBasket('C');
Assert.That(100, Is.EqualTo(checkout.TotalPrice()));
checkout.AddItemToBasket('D');
Assert.That(115, Is.EqualTo(checkout.TotalPrice()));
// Add more items to invoke offers (3 A's for £130), ie. 130 (3 A's) + 30 (B) + 20 (C) + 15 (D) = 195
checkout.AddItemToBasket('A');
checkout.AddItemToBasket('A');
Assert.That(195, Is.EqualTo(checkout.TotalPrice()));
// Add more items to invoke offers (3 A's for £130), ie. 130 (3 A's) + 50 (A) + 30 (B) + 20 (C) + 15 (D) = 195
checkout.AddItemToBasket('A');
Assert.That(245, Is.EqualTo(checkout.TotalPrice()));
}
