Expand "to" of delete activities

test/web/activity_pub/activity_pub_test.exs

@@ -591,6 +591,16 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubTest do
 
       assert Repo.get(Object, object.id).data["type"] == "Tombstone"
     end
+
+    test "it creates a delete activity and checks that it is also sent to users mentioned by the deleted object" do
+      user = insert(:user)
+      note = insert(:note_activity)
+      object = Object.get_by_ap_id(note.data["object"]["id"])
+      object = Kernel.put_in(object.data["to"], [user.ap_id])
+      {:ok, delete} = ActivityPub.delete(object)
+
+      assert user.ap_id in delete.data["to"]
+    end
   end
 
   describe "timeline post-processing" do