public void GivenAddNewItem_WhenItemExiting_ThenReturnfalse()
{
var articleGuid = Guid.NewGuid();
var basket = new Basket();
var bi = new BasketItem()
{
Article = new Article()
{
IdArticle = articleGuid
}
};
basket.BasketItems = new List <BasketItem>();
basket.BasketItems.Add(bi);
_basketRepository.Setup(x => x.Find(articleGuid)).Returns(basket);
var res = _basketService.AddItemsToBasket(articleGuid, bi);
Assert.IsFalse(res);
}