public void AddItemToShop()
{
Item item = new Item("ID0001", "Cestitka 1");
Shop shop = new Shop("trgovina 1");
Price price = new Price(4, 3.2) {ItemId = item.UniqueId, ShopId = shop.Id};
ShopItem shopItem = new ShopItem {ItemId = item.UniqueId, ShopId = shop.Id, PriceId = price.Id};
Assert.IsNotNull(shopItem, "Items not added to shop!");
shopItem.SetNumberOfItems(3);
Assert.AreEqual(3, shopItem.NumberOfItems, "ShopItem missmatch!");
Overview overview = new Overview();
overview.AddShopItem(shopItem);
Overview temp = overview;
}