public static void Load_ValidJson_Succeeds()
{
// Arrange + Act
var promotions = PromotionLoader.Load(ValidPromotionsJson, StockItems).ToArray();
//Assert
Assert.That(promotions.Length, Is.EqualTo(1));
var promotion = promotions.First();
// Two items for the price of one
Assert.That(promotion.Quantity, Is.EqualTo(2));
Assert.That(promotion.Price, Is.EqualTo(1.0m));
}
public static void Load_EmptyJson_Succeeds()
{
// Arrange
var json = string.Empty;
IEnumerable <IPromotion> promotions = null;
// Act + Assert
Assert.DoesNotThrow(() =>
{
promotions = PromotionLoader.Load(json, StockItems);
});
Assert.That(promotions, Is.Not.Null);
Assert.That(promotions, Is.Empty);
}
public static void Main()
{
// Load all data required to run the program
var priceList = GroceryItemLoader.Load(File.ReadAllText(".\\GroceryItems.json"))
.ToDictionary(i => i.Id, i => i);
var promotions = PromotionLoader.Load(File.ReadAllText(".\\Promotions.json"), priceList);
var basket = BasketItemLoader.Load(File.ReadAllText(".\\Basket.json"));
// Instantiate the controller
var controller = new CheckoutController(priceList, promotions);
// Checkout the items
var view = controller.Checkout(basket);
// Render the view
view.Render();
System.Console.WriteLine("Press a key to continue");
System.Console.ReadKey();
}
public static void Load_InvalidJson_Fails()
{
// Arrange + Act + Assert
Assert.Throws <JsonSerializationException>(() => PromotionLoader.Load(InvalidPromotionsJson, StockItems));
}
