Fix utf8 problems with iolists.

lib/pleroma/web/ostatus/ostatus_controller.ex

@@ -18,6 +18,7 @@ def feed(conn, %{"nickname" => nickname}) do
 
     response = FeedRepresenter.to_simple_form(user, activities, [user])
     |> :xmerl.export_simple(:xmerl_xml)
+    |> to_string
 
     conn
     |> put_resp_content_type("application/atom+xml")

test/support/factory.ex

@@ -3,7 +3,7 @@ defmodule Pleroma.Factory do
 
   def user_factory do
     user = %Pleroma.User{
-      name: sequence(:name, &"Test User #{&1}"),
+      name: sequence(:name, &"Test テスト User #{&1}"),
       email: sequence(:email, &"user#{&1}@example.com"),
       nickname: sequence(:nickname, &"nick#{&1}"),
       password_hash: Comeonin.Pbkdf2.hashpwsalt("test"),

test/web/ostatus/feed_representer_test.exs

@@ -14,7 +14,7 @@ test "returns a feed of the last 20 items of the user" do
     most_recent_update = note_activity.updated_at
     |> NaiveDateTime.to_iso8601
 
-    res = :xmerl.export_simple_content(tuple, :xmerl_xml) |> IO.iodata_to_binary
+    res = :xmerl.export_simple_content(tuple, :xmerl_xml) |> to_string
     user_xml = UserRepresenter.to_simple_form(user)
     |> :xmerl.export_simple_content(:xmerl_xml)
 

test/web/ostatus/user_representer_test.exs

@@ -6,10 +6,10 @@ defmodule Pleroma.Web.OStatus.UserRepresenterTest do
   alias Pleroma.User
 
   test "returns a user with id, uri, name and link" do
-    user = build(:user)
+    user = build(:user, nickname: "レイン")
     tuple = UserRepresenter.to_simple_form(user)
 
-    res = :xmerl.export_simple_content(tuple, :xmerl_xml) |> IO.iodata_to_binary
+    res = :xmerl.export_simple_content(tuple, :xmerl_xml) |> to_string
 
     expected = """
     <id>#{user.ap_id}</id>