public void Returns_the_object_passed_in()
{
var fruit = new Fruit();
fruit.CastAs<Fruit>().ShouldBeSameAs(fruit);
var apple = new Apple();
apple.CastAs<Fruit>().ShouldBeSameAs(apple);
}
public void Returns_null_if_the_object_is_of_a_different_type()
{
var fruit = new Fruit();
fruit.CastAs<Vegetable>().ShouldBeNull();
}