test: add a test for accepting inbound Flag activities

test/web/activity_pub/transmogrifier_test.exs

@@ -5,6 +5,7 @@
 defmodule Pleroma.Web.ActivityPub.TransmogrifierTest do
   use Pleroma.DataCase
   alias Pleroma.Activity
+  alias Pleroma.Object
   alias Pleroma.Repo
   alias Pleroma.User
   alias Pleroma.Web.ActivityPub.ActivityPub
@@ -764,6 +765,30 @@ defmodule Pleroma.Web.ActivityPub.TransmogrifierTest do
 
       assert object.data["attachment"] == [attachment]
     end
+
+    test "it accepts Flag activities" do
+      user = insert(:user)
+      other_user = insert(:user)
+
+      {:ok, activity} = CommonAPI.post(user, %{"status" => "test post"})
+      object = Object.normalize(activity.data["object"])
+
+      message = %{
+        "@context" => "https://www.w3.org/ns/activitystreams",
+        "cc" => [user.ap_id],
+        "object" => [user.ap_id, object.data["id"]],
+        "type" => "Flag",
+        "content" => "blocked AND reported!!!",
+        "actor" => other_user.ap_id
+      }
+
+      assert {:ok, activity} = Transmogrifier.handle_incoming(message)
+
+      assert activity.data["object"] == [user.ap_id, object.data["id"]]
+      assert activity.data["content"] == "blocked AND reported!!!"
+      assert activity.data["actor"] == other_user.ap_id
+      assert activity.data["cc"] == [user.ap_id]
+    end
   end
 
   describe "prepare outgoing" do