public void GetPromoOneShouldReturnProperPromo()
{
// Arrange
PromoRepository promoRepo = new PromoRepository();
// Act
Promo promoOne = promoRepo.GetPromoOne();
// Assert
Assert.True(IsTestPromoOne(promoOne));
}
public void CheckCalculateCalculateCostsCalculatesCorrectly(int buttersQty, int milksQty, int breadsQty, decimal finalCost)
{
// Arrange
IPromoRepository promoRepository = new PromoRepository();
IProductRepository productRepository = new ProductRepository();
List <IPromo> testPromosList = new List <IPromo>()
{
promoRepository.GetPromoOne(), promoRepository.GetPromoTwo()
};
List <IProduct> testProductsList = productRepository.GetProducts(buttersQty, milksQty, breadsQty);
IGroceriesBasket basket = new GroceriesBasket();
basket.AddProducts(testProductsList);
ICostCalculator costCalculator = new CostCalculator(basket, testPromosList);
// Act
costCalculator.CalculateCosts();
// Assert that all the involved Costs are as they should be
Assert.Equal(testProductsList.Sum(product => product.Price), costCalculator.TotalCost); // Total Cost of the Items
Assert.Equal(testPromosList.Sum(promo => promo.CalculateDeduction(testProductsList)), costCalculator.PromosDeductions); // Total Deductions from the applied Promos
Assert.Equal(finalCost, costCalculator.FinalCost); // Final Cost
}