Add basic Ostatus user representer.

test/web/ostatus/user_representer_test.exs

@@ -0,0 +1,17 @@
+defmodule Pleroma.Web.OStatus.UserRepresenterTest do
+  use Pleroma.DataCase
+  alias Pleroma.Web.OStatus.UserRepresenter
+
+  import Pleroma.Factory
+
+  test "returns a user with id, uri, name and link" do
+    user = build(:user)
+    tuple = UserRepresenter.to_tuple(user)
+    {:author, author} = tuple
+
+    [:id, :uri, :name, :link]
+    |> Enum.each(fn (tag) ->
+      assert Enum.find(author, fn(e) -> tag == elem(e, 0) end)
+    end)
+  end
+end