public void Test1()
{
var itemA = _productService.GetBySku("A");
int quantity = 7;
_shoppingBasket.AddToBasket(itemA, quantity);
var result = _shoppingBasket.GetBasket().ToList();
result.Count().Should().Be(1);
result[0].Item.Should().BeEquivalentTo(itemA);
result[0].Quantity.Should().Be(quantity);
}