+ describe "remove duplicates from following list" do
+ test "it removes duplicates" do
+ user = insert(:user)
+ follower = insert(:user)
+
+ {:ok, %User{following: following} = follower} = User.follow(follower, user)
+ assert length(following) == 2
+
+ {:ok, follower} =
+ follower
+ |> User.update_changeset(%{following: following ++ following})
+ |> Repo.update()
+
+ assert length(follower.following) == 4
+
+ {:ok, follower} = User.remove_duplicated_following(follower)
+ assert length(follower.following) == 2
+ end
+
+ test "it does nothing when following is uniq" do
+ user = insert(:user)
+ follower = insert(:user)
+
+ {:ok, follower} = User.follow(follower, user)
+ assert length(follower.following) == 2
+
+ {:ok, follower} = User.remove_duplicated_following(follower)
+ assert length(follower.following) == 2
+ end
+ end
+