public void ListChildrenReceivingAToy()
{
int toyId = _santa.AddToyToBag(toyName, childId);
int toyId2 = _santa.AddToyToBag("Ball", 2);
Dictionary <int, string> childrenWithToys = _santa.ChildrenToDeliver();
Assert.Equal(childrenWithToys[2], "Sue");
Assert.Equal(childrenWithToys[1], "Billy");
Assert.True(!childrenWithToys.ContainsKey(3));
}