public void GetFriendsInDistance_DistanceOneFromD_CEG() { UserNode user = Users.Find(u => u.LastName.Equals("D")); List <string> result = BreadthFirstSearch.GetFriendsInDistance(user, 1).Select(u => u.LastName).ToList(); Assert.AreEqual(new List <string> { "C", "E", "G" }, result); }