Merge branch 'test/activity_pub/transmogrifier.ex' into 'develop'

added tests /activity_pub/transmogrifier.ex

See merge request pleroma/pleroma!1651

lib/pleroma/object/fetcher.ex

@@ -31,6 +31,7 @@ defmodule Pleroma.Object.Fetcher do
 
   defp maybe_reinject_internal_fields(data, _), do: data
 
+  @spec reinject_object(struct(), map()) :: {:ok, Object.t()} | {:error, any()}
   defp reinject_object(struct, data) do
     Logger.debug("Reinjecting object #{data["id"]}")
 
@@ -61,52 +62,54 @@ defmodule Pleroma.Object.Fetcher do
   # TODO:
   # This will create a Create activity, which we need internally at the moment.
   def fetch_object_from_id(id, options \\ []) do
-    if object = Object.get_cached_by_ap_id(id) do
+    with {:fetch_object, nil} <- {:fetch_object, Object.get_cached_by_ap_id(id)},
+         {:fetch, {:ok, data}} <- {:fetch, fetch_and_contain_remote_object_from_id(id)},
+         {:normalize, nil} <- {:normalize, Object.normalize(data, false)},
+         params <- prepare_activity_params(data),
+         {:containment, :ok} <- {:containment, Containment.contain_origin(id, params)},
+         {:ok, activity} <- Transmogrifier.handle_incoming(params, options),
+         {:object, _data, %Object{} = object} <-
+           {:object, data, Object.normalize(activity, false)} do
       {:ok, object}
     else
-      Logger.info("Fetching #{id} via AP")
+      {:containment, _} ->
+        {:error, "Object containment failed."}
 
-      with {:fetch, {:ok, data}} <- {:fetch, fetch_and_contain_remote_object_from_id(id)},
+      {:error, {:reject, nil}} ->
-           {:normalize, nil} <- {:normalize, Object.normalize(data, false)},
+        {:reject, nil}
-           params <- %{
+
-             "type" => "Create",
+      {:object, data, nil} ->
-             "to" => data["to"],
+        reinject_object(%Object{}, data)
-             "cc" => data["cc"],
+
-             # Should we seriously keep this attributedTo thing?
+      {:normalize, object = %Object{}} ->
-             "actor" => data["actor"] || data["attributedTo"],
-             "object" => data
-           },
-           {:containment, :ok} <- {:containment, Containment.contain_origin(id, params)},
-           {:ok, activity} <- Transmogrifier.handle_incoming(params, options),
-           {:object, _data, %Object{} = object} <-
-             {:object, data, Object.normalize(activity, false)} do
         {:ok, object}
-      else
-        {:containment, _} ->
-          {:error, "Object containment failed."}
 
-        {:error, {:reject, nil}} ->
+      {:fetch_object, %Object{} = object} ->
-          {:reject, nil}
+        {:ok, object}
 
-        {:object, data, nil} ->
+      _e ->
-          reinject_object(%Object{}, data)
+        # Only fallback when receiving a fetch/normalization error with ActivityPub
+        Logger.info("Couldn't get object via AP, trying out OStatus fetching...")
 
-        {:normalize, object = %Object{}} ->
+        # FIXME: OStatus Object Containment?
-          {:ok, object}
+        case OStatus.fetch_activity_from_url(id) do
-
+          {:ok, [activity | _]} -> {:ok, Object.normalize(activity, false)}
-        _e ->
+          e -> e
-          # Only fallback when receiving a fetch/normalization error with ActivityPub
+        end
-          Logger.info("Couldn't get object via AP, trying out OStatus fetching...")
-
-          # FIXME: OStatus Object Containment?
-          case OStatus.fetch_activity_from_url(id) do
-            {:ok, [activity | _]} -> {:ok, Object.normalize(activity, false)}
-            e -> e
-          end
-      end
     end
   end
 
+  defp prepare_activity_params(data) do
+    %{
+      "type" => "Create",
+      "to" => data["to"],
+      "cc" => data["cc"],
+      # Should we seriously keep this attributedTo thing?
+      "actor" => data["actor"] || data["attributedTo"],
+      "object" => data
+    }
+  end
+
   def fetch_object_from_id!(id, options \\ []) do
     with {:ok, object} <- fetch_object_from_id(id, options) do
       object

lib/pleroma/web/activity_pub/transmogrifier.ex

@@ -42,8 +42,7 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
   end
 
   def fix_summary(%{"summary" => nil} = object) do
-    object
+    Map.put(object, "summary", "")
-    |> Map.put("summary", "")
   end
 
   def fix_summary(%{"summary" => _} = object) do
@@ -51,10 +50,7 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
     object
   end
 
-  def fix_summary(object) do
+  def fix_summary(object), do: Map.put(object, "summary", "")
-    object
-    |> Map.put("summary", "")
-  end
 
   def fix_addressing_list(map, field) do
     cond do
@@ -74,13 +70,9 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
         explicit_mentions,
         follower_collection
       ) do
-    explicit_to =
+    explicit_to = Enum.filter(to, fn x -> x in explicit_mentions end)
-      to
-      |> Enum.filter(fn x -> x in explicit_mentions end)
 
-    explicit_cc =
+    explicit_cc = Enum.filter(to, fn x -> x not in explicit_mentions end)
-      to
-      |> Enum.filter(fn x -> x not in explicit_mentions end)
 
     final_cc =
       (cc ++ explicit_cc)
@@ -98,13 +90,19 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
   def fix_explicit_addressing(%{"directMessage" => true} = object), do: object
 
   def fix_explicit_addressing(object) do
-    explicit_mentions =
+    explicit_mentions = Utils.determine_explicit_mentions(object)
+
+    %User{follower_address: follower_collection} =
       object
-      |> Utils.determine_explicit_mentions()
+      |> Containment.get_actor()
+      |> User.get_cached_by_ap_id()
 
-    follower_collection = User.get_cached_by_ap_id(Containment.get_actor(object)).follower_address
+    explicit_mentions =
-
+      explicit_mentions ++
-    explicit_mentions = explicit_mentions ++ [Pleroma.Constants.as_public(), follower_collection]
+        [
+          Pleroma.Constants.as_public(),
+          follower_collection
+        ]
 
     fix_explicit_addressing(object, explicit_mentions, follower_collection)
   end
@@ -148,48 +146,25 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
   end
 
   def fix_actor(%{"attributedTo" => actor} = object) do
-    object
+    Map.put(object, "actor", Containment.get_actor(%{"actor" => actor}))
-    |> Map.put("actor", Containment.get_actor(%{"actor" => actor}))
   end
 
   def fix_in_reply_to(object, options \\ [])
 
   def fix_in_reply_to(%{"inReplyTo" => in_reply_to} = object, options)
       when not is_nil(in_reply_to) do
-    in_reply_to_id =
+    in_reply_to_id = prepare_in_reply_to(in_reply_to)
-      cond do
-        is_bitstring(in_reply_to) ->
-          in_reply_to
-
-        is_map(in_reply_to) && is_bitstring(in_reply_to["id"]) ->
-          in_reply_to["id"]
-
-        is_list(in_reply_to) && is_bitstring(Enum.at(in_reply_to, 0)) ->
-          Enum.at(in_reply_to, 0)
-
-        # Maybe I should output an error too?
-        true ->
-          ""
-      end
-
     object = Map.put(object, "inReplyToAtomUri", in_reply_to_id)
 
     if Federator.allowed_incoming_reply_depth?(options[:depth]) do
-      case get_obj_helper(in_reply_to_id, options) do
+      with {:ok, replied_object} <- get_obj_helper(in_reply_to_id, options),
-        {:ok, replied_object} ->
+           %Activity{} = _ <- Activity.get_create_by_object_ap_id(replied_object.data["id"]) do
-          with %Activity{} = _activity <-
+        object
-                 Activity.get_create_by_object_ap_id(replied_object.data["id"]) do
+        |> Map.put("inReplyTo", replied_object.data["id"])
-            object
+        |> Map.put("inReplyToAtomUri", object["inReplyToAtomUri"] || in_reply_to_id)
-            |> Map.put("inReplyTo", replied_object.data["id"])
+        |> Map.put("conversation", replied_object.data["context"] || object["conversation"])
-            |> Map.put("inReplyToAtomUri", object["inReplyToAtomUri"] || in_reply_to_id)
+        |> Map.put("context", replied_object.data["context"] || object["conversation"])
-            |> Map.put("conversation", replied_object.data["context"] || object["conversation"])
+      else
-            |> Map.put("context", replied_object.data["context"] || object["conversation"])
-          else
-            e ->
-              Logger.error("Couldn't fetch #{inspect(in_reply_to_id)}, error: #{inspect(e)}")
-              object
-          end
-
         e ->
           Logger.error("Couldn't fetch #{inspect(in_reply_to_id)}, error: #{inspect(e)}")
           object
@@ -201,6 +176,22 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
 
   def fix_in_reply_to(object, _options), do: object
 
+  defp prepare_in_reply_to(in_reply_to) do
+    cond do
+      is_bitstring(in_reply_to) ->
+        in_reply_to
+
+      is_map(in_reply_to) && is_bitstring(in_reply_to["id"]) ->
+        in_reply_to["id"]
+
+      is_list(in_reply_to) && is_bitstring(Enum.at(in_reply_to, 0)) ->
+        Enum.at(in_reply_to, 0)
+
+      true ->
+        ""
+    end
+  end
+
   def fix_context(object) do
     context = object["context"] || object["conversation"] || Utils.generate_context_id()
 
@@ -211,11 +202,9 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
 
   def fix_attachments(%{"attachment" => attachment} = object) when is_list(attachment) do
     attachments =
-      attachment
+      Enum.map(attachment, fn data ->
-      |> Enum.map(fn data ->
         media_type = data["mediaType"] || data["mimeType"]
         href = data["url"] || data["href"]
-
         url = [%{"type" => "Link", "mediaType" => media_type, "href" => href}]
 
         data
@@ -223,30 +212,25 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
         |> Map.put("url", url)
       end)
 
-    object
+    Map.put(object, "attachment", attachments)
-    |> Map.put("attachment", attachments)
   end
 
   def fix_attachments(%{"attachment" => attachment} = object) when is_map(attachment) do
-    Map.put(object, "attachment", [attachment])
+    object
+    |> Map.put("attachment", [attachment])
     |> fix_attachments()
   end
 
   def fix_attachments(object), do: object
 
   def fix_url(%{"url" => url} = object) when is_map(url) do
-    object
+    Map.put(object, "url", url["href"])
-    |> Map.put("url", url["href"])
   end
 
   def fix_url(%{"type" => "Video", "url" => url} = object) when is_list(url) do
     first_element = Enum.at(url, 0)
 
-    link_element =
+    link_element = Enum.find(url, fn x -> is_map(x) and x["mimeType"] == "text/html" end)
-      url
-      |> Enum.filter(fn x -> is_map(x) end)
-      |> Enum.filter(fn x -> x["mimeType"] == "text/html" end)
-      |> Enum.at(0)
 
     object
     |> Map.put("attachment", [first_element])
@@ -264,36 +248,32 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
         true -> ""
       end
 
-    object
+    Map.put(object, "url", url_string)
-    |> Map.put("url", url_string)
   end
 
   def fix_url(object), do: object
 
   def fix_emoji(%{"tag" => tags} = object) when is_list(tags) do
-    emoji = tags |> Enum.filter(fn data -> data["type"] == "Emoji" and data["icon"] end)
-
     emoji =
-      emoji
+      tags
+      |> Enum.filter(fn data -> data["type"] == "Emoji" and data["icon"] end)
       |> Enum.reduce(%{}, fn data, mapping ->
         name = String.trim(data["name"], ":")
 
-        mapping |> Map.put(name, data["icon"]["url"])
+        Map.put(mapping, name, data["icon"]["url"])
       end)
 
     # we merge mastodon and pleroma emoji into a single mapping, to allow for both wire formats
     emoji = Map.merge(object["emoji"] || %{}, emoji)
 
-    object
+    Map.put(object, "emoji", emoji)
-    |> Map.put("emoji", emoji)
   end
 
   def fix_emoji(%{"tag" => %{"type" => "Emoji"} = tag} = object) do
     name = String.trim(tag["name"], ":")
     emoji = %{name => tag["icon"]["url"]}
 
-    object
+    Map.put(object, "emoji", emoji)
-    |> Map.put("emoji", emoji)
   end
 
   def fix_emoji(object), do: object
@@ -304,17 +284,13 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
       |> Enum.filter(fn data -> data["type"] == "Hashtag" and data["name"] end)
       |> Enum.map(fn data -> String.slice(data["name"], 1..-1) end)
 
-    combined = tag ++ tags
+    Map.put(object, "tag", tag ++ tags)
-
-    object
-    |> Map.put("tag", combined)
   end
 
   def fix_tag(%{"tag" => %{"type" => "Hashtag", "name" => hashtag} = tag} = object) do
     combined = [tag, String.slice(hashtag, 1..-1)]
 
-    object
+    Map.put(object, "tag", combined)
-    |> Map.put("tag", combined)
   end
 
   def fix_tag(%{"tag" => %{} = tag} = object), do: Map.put(object, "tag", [tag])
@@ -326,8 +302,7 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
     content_groups = Map.to_list(content_map)
     {_, content} = Enum.at(content_groups, 0)
 
-    object
+    Map.put(object, "content", content)
-    |> Map.put("content", content)
   end
 
   def fix_content_map(object), do: object
@@ -336,16 +311,11 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
 
   def fix_type(%{"inReplyTo" => reply_id, "name" => _} = object, options)
       when is_binary(reply_id) do
-    reply =
+    with true <- Federator.allowed_incoming_reply_depth?(options[:depth]),
-      with true <- Federator.allowed_incoming_reply_depth?(options[:depth]),
+         {:ok, %{data: %{"type" => "Question"} = _} = _} <- get_obj_helper(reply_id, options) do
-           {:ok, object} <- get_obj_helper(reply_id, options) do
-        object
-      end
-
-    if reply && reply.data["type"] == "Question" do
       Map.put(object, "type", "Answer")
     else
-      object
+      _ -> object
     end
   end
 
@@ -377,6 +347,17 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
     end
   end
 
+  # Reduce the object list to find the reported user.
+  defp get_reported(objects) do
+    Enum.reduce_while(objects, nil, fn ap_id, _ ->
+      with %User{} = user <- User.get_cached_by_ap_id(ap_id) do
+        {:halt, user}
+      else
+        _ -> {:cont, nil}
+      end
+    end)
+  end
+
   def handle_incoming(data, options \\ [])
 
   # Flag objects are placed ahead of the ID check because Mastodon 2.8 and earlier send them
@@ -385,31 +366,19 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
     with context <- data["context"] || Utils.generate_context_id(),
          content <- data["content"] || "",
          %User{} = actor <- User.get_cached_by_ap_id(actor),
-
          # Reduce the object list to find the reported user.
-         %User{} = account <-
+         %User{} = account <- get_reported(objects),
-           Enum.reduce_while(objects, nil, fn ap_id, _ ->
-             with %User{} = user <- User.get_cached_by_ap_id(ap_id) do
-               {:halt, user}
-             else
-               _ -> {:cont, nil}
-             end
-           end),
-
          # Remove the reported user from the object list.
          statuses <- Enum.filter(objects, fn ap_id -> ap_id != account.ap_id end) do
-      params = %{
+      %{
         actor: actor,
         context: context,
         account: account,
         statuses: statuses,
         content: content,
-        additional: %{
+        additional: %{"cc" => [account.ap_id]}
-          "cc" => [account.ap_id]
-        }
       }
-
+      |> ActivityPub.flag()
-      ActivityPub.flag(params)
     end
   end
 
@@ -756,8 +725,12 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
 
   def handle_incoming(_, _), do: :error
 
+  @spec get_obj_helper(String.t(), Keyword.t()) :: {:ok, Object.t()} | nil
   def get_obj_helper(id, options \\ []) do
-    if object = Object.normalize(id, true, options), do: {:ok, object}, else: nil
+    case Object.normalize(id, true, options) do
+      %Object{} = object -> {:ok, object}
+      _ -> nil
+    end
   end
 
   def set_reply_to_uri(%{"inReplyTo" => in_reply_to} = object) when is_binary(in_reply_to) do
@@ -856,27 +829,24 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
     {:ok, data}
   end
 
-  def maybe_fix_object_url(data) do
+  def maybe_fix_object_url(%{"object" => object} = data) when is_binary(object) do
-    if is_binary(data["object"]) and not String.starts_with?(data["object"], "http") do
+    with false <- String.starts_with?(object, "http"),
-      case get_obj_helper(data["object"]) do
+         {:fetch, {:ok, relative_object}} <- {:fetch, get_obj_helper(object)},
-        {:ok, relative_object} ->
+         %{data: %{"external_url" => external_url}} when not is_nil(external_url) <-
-          if relative_object.data["external_url"] do
+           relative_object do
-            _data =
+      Map.put(data, "object", external_url)
-              data
-              |> Map.put("object", relative_object.data["external_url"])
-          else
-            data
-          end
-
-        e ->
-          Logger.error("Couldn't fetch #{data["object"]} #{inspect(e)}")
-          data
-      end
     else
-      data
+      {:fetch, e} ->
+        Logger.error("Couldn't fetch #{object} #{inspect(e)}")
+        data
+
+      _ ->
+        data
     end
   end
 
+  def maybe_fix_object_url(data), do: data
+
   def add_hashtags(object) do
     tags =
       (object["tag"] || [])
@@ -894,53 +864,49 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
           tag
       end)
 
-    object
+    Map.put(object, "tag", tags)
-    |> Map.put("tag", tags)
   end
 
   def add_mention_tags(object) do
     mentions =
       object
       |> Utils.get_notified_from_object()
-      |> Enum.map(fn user ->
+      |> Enum.map(&build_mention_tag/1)
-        %{"type" => "Mention", "href" => user.ap_id, "name" => "@#{user.nickname}"}
-      end)
 
     tags = object["tag"] || []
 
-    object
+    Map.put(object, "tag", tags ++ mentions)
-    |> Map.put("tag", tags ++ mentions)
   end
 
-  def add_emoji_tags(%User{info: %{"emoji" => _emoji} = user_info} = object) do
+  defp build_mention_tag(%{ap_id: ap_id, nickname: nickname} = _) do
-    user_info = add_emoji_tags(user_info)
+    %{"type" => "Mention", "href" => ap_id, "name" => "@#{nickname}"}
+  end
 
-    object
+  def take_emoji_tags(%User{info: %{emoji: emoji} = _user_info} = _user) do
-    |> Map.put(:info, user_info)
+    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 =
+    out = Enum.map(emoji, &build_emoji_tag/1)
-      emoji
-      |> Enum.map(fn {name, url} ->
-        %{
-          "icon" => %{"url" => url, "type" => "Image"},
-          "name" => ":" <> name <> ":",
-          "type" => "Emoji",
-          "updated" => "1970-01-01T00:00:00Z",
-          "id" => url
-        }
-      end)
 
-    object
+    Map.put(object, "tag", tags ++ out)
-    |> Map.put("tag", tags ++ out)
   end
 
-  def add_emoji_tags(object) do
+  def add_emoji_tags(object), do: object
-    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
@@ -960,9 +926,7 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
 
   def add_attributed_to(object) do
     attributed_to = object["attributedTo"] || object["actor"]
-
+    Map.put(object, "attributedTo", attributed_to)
-    object
-    |> Map.put("attributedTo", attributed_to)
   end
 
   def prepare_attachments(object) do
@@ -973,8 +937,7 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
         %{"url" => href, "mediaType" => media_type, "name" => data["name"], "type" => "Document"}
       end)
 
-    object
+    Map.put(object, "attachment", attachments)
-    |> Map.put("attachment", attachments)
   end
 
   defp strip_internal_fields(object) do
@@ -983,12 +946,9 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
   end
 
   defp strip_internal_tags(%{"tag" => tags} = object) do
-    tags =
+    tags = Enum.filter(tags, fn x -> is_map(x) end)
-      tags
-      |> Enum.filter(fn x -> is_map(x) end)
 
-    object
+    Map.put(object, "tag", tags)
-    |> Map.put("tag", tags)
   end
 
   defp strip_internal_tags(object), do: object
@@ -1073,16 +1033,11 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
     end
   end
 
-  def maybe_fix_user_url(data) do
+  def maybe_fix_user_url(%{"url" => url} = data) when is_map(url) do
-    if is_map(data["url"]) do
+    Map.put(data, "url", url["href"])
-      Map.put(data, "url", data["url"]["href"])
-    else
-      data
-    end
   end
 
-  def maybe_fix_user_object(data) do
+  def maybe_fix_user_url(data), do: data
-    data
+
-    |> maybe_fix_user_url
+  def maybe_fix_user_object(data), do: maybe_fix_user_url(data)
-  end
 end

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

@@ -75,10 +75,7 @@ defmodule Pleroma.Web.ActivityPub.UserView do
 
     endpoints = render("endpoints.json", %{user: user})
 
-    user_tags =
+    emoji_tags = Transmogrifier.take_emoji_tags(user)
-      user
-      |> Transmogrifier.add_emoji_tags()
-      |> Map.get("tag", [])
 
     fields =
       user.info
@@ -110,7 +107,7 @@ defmodule Pleroma.Web.ActivityPub.UserView 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

@@ -1455,4 +1455,271 @@ defmodule Pleroma.Web.ActivityPub.TransmogrifierTest do
       refute recipient.follower_address in fixed_object["to"]
     end
   end
+
+  describe "fix_summary/1" do
+    test "returns fixed object" do
+      assert Transmogrifier.fix_summary(%{"summary" => nil}) == %{"summary" => ""}
+      assert Transmogrifier.fix_summary(%{"summary" => "ok"}) == %{"summary" => "ok"}
+      assert Transmogrifier.fix_summary(%{}) == %{"summary" => ""}
+    end
+  end
+
+  describe "fix_in_reply_to/2" do
+    clear_config([:instance, :federation_incoming_replies_max_depth])
+
+    setup do
+      data = Poison.decode!(File.read!("test/fixtures/mastodon-post-activity.json"))
+      [data: data]
+    end
+
+    test "returns not modified object when hasn't containts inReplyTo field", %{data: data} do
+      assert Transmogrifier.fix_in_reply_to(data) == data
+    end
+
+    test "returns object with inReplyToAtomUri when denied incoming reply", %{data: data} do
+      Pleroma.Config.put([:instance, :federation_incoming_replies_max_depth], 0)
+
+      object_with_reply =
+        Map.put(data["object"], "inReplyTo", "https://shitposter.club/notice/2827873")
+
+      modified_object = Transmogrifier.fix_in_reply_to(object_with_reply)
+      assert modified_object["inReplyTo"] == "https://shitposter.club/notice/2827873"
+      assert modified_object["inReplyToAtomUri"] == "https://shitposter.club/notice/2827873"
+
+      object_with_reply =
+        Map.put(data["object"], "inReplyTo", %{"id" => "https://shitposter.club/notice/2827873"})
+
+      modified_object = Transmogrifier.fix_in_reply_to(object_with_reply)
+      assert modified_object["inReplyTo"] == %{"id" => "https://shitposter.club/notice/2827873"}
+      assert modified_object["inReplyToAtomUri"] == "https://shitposter.club/notice/2827873"
+
+      object_with_reply =
+        Map.put(data["object"], "inReplyTo", ["https://shitposter.club/notice/2827873"])
+
+      modified_object = Transmogrifier.fix_in_reply_to(object_with_reply)
+      assert modified_object["inReplyTo"] == ["https://shitposter.club/notice/2827873"]
+      assert modified_object["inReplyToAtomUri"] == "https://shitposter.club/notice/2827873"
+
+      object_with_reply = Map.put(data["object"], "inReplyTo", [])
+      modified_object = Transmogrifier.fix_in_reply_to(object_with_reply)
+      assert modified_object["inReplyTo"] == []
+      assert modified_object["inReplyToAtomUri"] == ""
+    end
+
+    test "returns modified object when allowed incoming reply", %{data: data} do
+      object_with_reply =
+        Map.put(
+          data["object"],
+          "inReplyTo",
+          "https://shitposter.club/notice/2827873"
+        )
+
+      Pleroma.Config.put([:instance, :federation_incoming_replies_max_depth], 5)
+      modified_object = Transmogrifier.fix_in_reply_to(object_with_reply)
+
+      assert modified_object["inReplyTo"] ==
+               "tag:shitposter.club,2017-05-05:noticeId=2827873:objectType=comment"
+
+      assert modified_object["inReplyToAtomUri"] == "https://shitposter.club/notice/2827873"
+
+      assert modified_object["conversation"] ==
+               "tag:shitposter.club,2017-05-05:objectType=thread:nonce=3c16e9c2681f6d26"
+
+      assert modified_object["context"] ==
+               "tag:shitposter.club,2017-05-05:objectType=thread:nonce=3c16e9c2681f6d26"
+    end
+  end
+
+  describe "fix_url/1" do
+    test "fixes data for object when url is map" do
+      object = %{
+        "url" => %{
+          "type" => "Link",
+          "mimeType" => "video/mp4",
+          "href" => "https://peede8d-46fb-ad81-2d4c2d1630e3-480.mp4"
+        }
+      }
+
+      assert Transmogrifier.fix_url(object) == %{
+               "url" => "https://peede8d-46fb-ad81-2d4c2d1630e3-480.mp4"
+             }
+    end
+
+    test "fixes data for video object" do
+      object = %{
+        "type" => "Video",
+        "url" => [
+          %{
+            "type" => "Link",
+            "mimeType" => "video/mp4",
+            "href" => "https://peede8d-46fb-ad81-2d4c2d1630e3-480.mp4"
+          },
+          %{
+            "type" => "Link",
+            "mimeType" => "video/mp4",
+            "href" => "https://peertube46fb-ad81-2d4c2d1630e3-240.mp4"
+          },
+          %{
+            "type" => "Link",
+            "mimeType" => "text/html",
+            "href" => "https://peertube.-2d4c2d1630e3"
+          },
+          %{
+            "type" => "Link",
+            "mimeType" => "text/html",
+            "href" => "https://peertube.-2d4c2d16377-42"
+          }
+        ]
+      }
+
+      assert Transmogrifier.fix_url(object) == %{
+               "attachment" => [
+                 %{
+                   "href" => "https://peede8d-46fb-ad81-2d4c2d1630e3-480.mp4",
+                   "mimeType" => "video/mp4",
+                   "type" => "Link"
+                 }
+               ],
+               "type" => "Video",
+               "url" => "https://peertube.-2d4c2d1630e3"
+             }
+    end
+
+    test "fixes url for not Video object" do
+      object = %{
+        "type" => "Text",
+        "url" => [
+          %{
+            "type" => "Link",
+            "mimeType" => "text/html",
+            "href" => "https://peertube.-2d4c2d1630e3"
+          },
+          %{
+            "type" => "Link",
+            "mimeType" => "text/html",
+            "href" => "https://peertube.-2d4c2d16377-42"
+          }
+        ]
+      }
+
+      assert Transmogrifier.fix_url(object) == %{
+               "type" => "Text",
+               "url" => "https://peertube.-2d4c2d1630e3"
+             }
+
+      assert Transmogrifier.fix_url(%{"type" => "Text", "url" => []}) == %{
+               "type" => "Text",
+               "url" => ""
+             }
+    end
+
+    test "retunrs not modified object" do
+      assert Transmogrifier.fix_url(%{"type" => "Text"}) == %{"type" => "Text"}
+    end
+  end
+
+  describe "get_obj_helper/2" do
+    test "returns nil when cannot normalize object" do
+      refute Transmogrifier.get_obj_helper("test-obj-id")
+    end
+
+    test "returns {:ok, %Object{}} for success case" do
+      assert {:ok, %Object{}} =
+               Transmogrifier.get_obj_helper("https://shitposter.club/notice/2827873")
+    end
+  end
+
+  describe "fix_attachments/1" do
+    test "returns not modified object" do
+      data = Poison.decode!(File.read!("test/fixtures/mastodon-post-activity.json"))
+      assert Transmogrifier.fix_attachments(data) == data
+    end
+
+    test "returns modified object when attachment is map" do
+      assert Transmogrifier.fix_attachments(%{
+               "attachment" => %{
+                 "mediaType" => "video/mp4",
+                 "url" => "https://peertube.moe/stat-480.mp4"
+               }
+             }) == %{
+               "attachment" => [
+                 %{
+                   "mediaType" => "video/mp4",
+                   "url" => [
+                     %{
+                       "href" => "https://peertube.moe/stat-480.mp4",
+                       "mediaType" => "video/mp4",
+                       "type" => "Link"
+                     }
+                   ]
+                 }
+               ]
+             }
+    end
+
+    test "returns modified object when attachment is list" do
+      assert Transmogrifier.fix_attachments(%{
+               "attachment" => [
+                 %{"mediaType" => "video/mp4", "url" => "https://pe.er/stat-480.mp4"},
+                 %{"mimeType" => "video/mp4", "href" => "https://pe.er/stat-480.mp4"}
+               ]
+             }) == %{
+               "attachment" => [
+                 %{
+                   "mediaType" => "video/mp4",
+                   "url" => [
+                     %{
+                       "href" => "https://pe.er/stat-480.mp4",
+                       "mediaType" => "video/mp4",
+                       "type" => "Link"
+                     }
+                   ]
+                 },
+                 %{
+                   "href" => "https://pe.er/stat-480.mp4",
+                   "mediaType" => "video/mp4",
+                   "mimeType" => "video/mp4",
+                   "url" => [
+                     %{
+                       "href" => "https://pe.er/stat-480.mp4",
+                       "mediaType" => "video/mp4",
+                       "type" => "Link"
+                     }
+                   ]
+                 }
+               ]
+             }
+    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 @@ defmodule Pleroma.Web.ActivityPub.UserViewTest 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)