public void TransformToFUser_WhenCorrectUser_ShouldReturnTransformedFUser()
        {
            User user = new User
            {
                id        = "1",
                firstName = "Jimmy",
                lastName  = "McNulty",
                photo     = new Icon
                {
                    prefix = "a.b/",
                    suffix = "/c"
                },
                homeCity = "Baltimore",
                friends  = new FourSquareEntityGroups <User>()
            };

            FUser fUser = TransformerHelpers.TransformToFUser(user);

            Assert.IsNotNull(fUser);
            Assert.IsTrue(fUser.Name == "Jimmy McNulty");
            Assert.AreEqual(fUser.FriendsCount, 0);
        }
 public void TransformToFUser_WhenUserIsNull_ShouldThrowArgumentNullException()
 {
     TransformerHelpers.TransformToFUser(null);
 }