added tests

lib/pleroma/web/activity_pub/transmogrifier.ex

@@ -870,41 +870,44 @@ def add_mention_tags(object) do
     mentions =
       object
       |> Utils.get_notified_from_object()
-      |> Enum.map(fn user ->
-        %{"type" => "Mention", "href" => user.ap_id, "name" => "@#{user.nickname}"}
-      end)
+      |> Enum.map(&build_mention_tag/1)
 
     tags = object["tag"] || []
 
     Map.put(object, "tag", tags ++ mentions)
   end
 
-  def add_emoji_tags(%User{info: %{"emoji" => _emoji} = user_info} = object) do
-    user_info = add_emoji_tags(user_info)
+  defp build_mention_tag(%{ap_id: ap_id, nickname: nickname} = _) do
+    %{"type" => "Mention", "href" => ap_id, "name" => "@#{nickname}"}
+  end
 
-    Map.put(object, :info, user_info)
+  def take_emoji_tags(%User{info: %{emoji: emoji} = _user_info} = _user) do
+    emoji
+    |> Enum.flat_map(&Map.to_list/1)
+    |> Enum.map(&build_emoji_tag/1)
   end
 
   # TODO: we should probably send mtime instead of unix epoch time for updated
   def add_emoji_tags(%{"emoji" => emoji} = object) do
     tags = object["tag"] || []
 
-    out =
-      Enum.map(emoji, fn {name, url} ->
-        %{
-          "icon" => %{"url" => url, "type" => "Image"},
-          "name" => ":" <> name <> ":",
-          "type" => "Emoji",
-          "updated" => "1970-01-01T00:00:00Z",
-          "id" => url
-        }
-      end)
+    out = Enum.map(emoji, &build_emoji_tag/1)
 
     Map.put(object, "tag", tags ++ out)
   end
 
   def add_emoji_tags(object), do: object
 
+  defp build_emoji_tag({name, url}) do
+    %{
+      "icon" => %{"url" => url, "type" => "Image"},
+      "name" => ":" <> name <> ":",
+      "type" => "Emoji",
+      "updated" => "1970-01-01T00:00:00Z",
+      "id" => url
+    }
+  end
+
   def set_conversation(object) do
     Map.put(object, "conversation", object["context"])
   end

lib/pleroma/web/activity_pub/views/user_view.ex

@@ -75,10 +75,7 @@ def render("user.json", %{user: user}) do
 
     endpoints = render("endpoints.json", %{user: user})
 
-    user_tags =
-      user
-      |> Transmogrifier.add_emoji_tags()
-      |> Map.get("tag", [])
+    emoji_tags = Transmogrifier.take_emoji_tags(user)
 
     fields =
       user.info
@@ -110,7 +107,7 @@ def render("user.json", %{user: user}) do
       },
       "endpoints" => endpoints,
       "attachment" => fields,
-      "tag" => (user.info.source_data["tag"] || []) ++ user_tags
+      "tag" => (user.info.source_data["tag"] || []) ++ emoji_tags
     }
     |> Map.merge(maybe_make_image(&User.avatar_url/2, "icon", user))
     |> Map.merge(maybe_make_image(&User.banner_url/2, "image", user))

test/web/activity_pub/transmogrifier_test.exs

@@ -1687,4 +1687,35 @@ test "returns modified object when attachment is list" do
              }
     end
   end
+
+  describe "fix_emoji/1" do
+    test "returns not modified object when object not contains tags" do
+      data = Poison.decode!(File.read!("test/fixtures/mastodon-post-activity.json"))
+      assert Transmogrifier.fix_emoji(data) == data
+    end
+
+    test "returns object with emoji when object contains list tags" do
+      assert Transmogrifier.fix_emoji(%{
+               "tag" => [
+                 %{"type" => "Emoji", "name" => ":bib:", "icon" => %{"url" => "/test"}},
+                 %{"type" => "Hashtag"}
+               ]
+             }) == %{
+               "emoji" => %{"bib" => "/test"},
+               "tag" => [
+                 %{"icon" => %{"url" => "/test"}, "name" => ":bib:", "type" => "Emoji"},
+                 %{"type" => "Hashtag"}
+               ]
+             }
+    end
+
+    test "returns object with emoji when object contains map tag" do
+      assert Transmogrifier.fix_emoji(%{
+               "tag" => %{"type" => "Emoji", "name" => ":bib:", "icon" => %{"url" => "/test"}}
+             }) == %{
+               "emoji" => %{"bib" => "/test"},
+               "tag" => %{"icon" => %{"url" => "/test"}, "name" => ":bib:", "type" => "Emoji"}
+             }
+    end
+  end
 end

test/web/activity_pub/views/user_view_test.exs

@@ -37,6 +37,22 @@ test "Renders profile fields" do
            } = UserView.render("user.json", %{user: user})
   end
 
+  test "Renders with emoji tags" do
+    user = insert(:user, %{info: %{emoji: [%{"bib" => "/test"}]}})
+
+    assert %{
+             "tag" => [
+               %{
+                 "icon" => %{"type" => "Image", "url" => "/test"},
+                 "id" => "/test",
+                 "name" => ":bib:",
+                 "type" => "Emoji",
+                 "updated" => "1970-01-01T00:00:00Z"
+               }
+             ]
+           } = UserView.render("user.json", %{user: user})
+  end
+
   test "Does not add an avatar image if the user hasn't set one" do
     user = insert(:user)
     {:ok, user} = User.ensure_keys_present(user)