public void AddItem_should_add_new_item_to_basket_if_does_not_exist()
{
_baskets.Add(new Basket(_testCustomerId, new List <Item>()));
_sut.AddItem(_testCustomerId, new Item("Item1", 1));
_baskets.First().Items.Count.Should().Be(1);
_baskets.First().Items.First().ItemId.Should().Be("Item1");
_baskets.First().Items.First().Quantity.Should().Be(1);
}
public Basket AddItem(string customerId, Item item)
{
_basketStore.AddItem(customerId, item);
return(GetBasketByCustomerId(customerId));
}