Introduce group posts

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

test/federation/activity_pub/transmogrifier/join_test.exs

@@ -0,0 +1,104 @@
+defmodule Mobilizon.Federation.ActivityPub.Transmogrifier.JoinTest do
+  use Mobilizon.DataCase
+
+  import Mobilizon.Factory
+  import ExUnit.CaptureLog
+  alias Mobilizon.Actors.Actor
+  alias Mobilizon.Events
+  alias Mobilizon.Events.{Event, Participant}
+  alias Mobilizon.Federation.ActivityPub
+  alias Mobilizon.Federation.ActivityPub.Transmogrifier
+
+  describe "handle incoming join activities" do
+    @join_message "I want to get in!"
+    test "it accepts Join activities" do
+      %Actor{url: organizer_url} = organizer = insert(:actor)
+      %Actor{url: participant_url} = _participant = insert(:actor)
+
+      %Event{url: event_url} = _event = insert(:event, organizer_actor: organizer)
+
+      join_data =
+        File.read!("test/fixtures/mobilizon-join-activity.json")
+        |> Jason.decode!()
+        |> Map.put("actor", participant_url)
+        |> Map.put("object", event_url)
+        |> Map.put("participationMessage", @join_message)
+
+      assert {:ok, activity, %Participant{} = participant} =
+               Transmogrifier.handle_incoming(join_data)
+
+      assert participant.metadata.message == @join_message
+      assert participant.role == :participant
+
+      assert activity.data["type"] == "Accept"
+      assert activity.data["object"]["object"] == event_url
+      assert activity.data["object"]["id"] =~ "/join/event/"
+      assert activity.data["object"]["type"] =~ "Join"
+      assert activity.data["object"]["participationMessage"] == @join_message
+      assert activity.data["actor"] == organizer_url
+      assert activity.data["id"] =~ "/accept/join/"
+    end
+  end
+
+  describe "handle incoming accept join activities" do
+    test "it accepts Accept activities for Join activities" do
+      %Actor{url: organizer_url} = organizer = insert(:actor)
+      %Actor{} = participant_actor = insert(:actor)
+
+      %Event{} = event = insert(:event, organizer_actor: organizer, join_options: :restricted)
+
+      {:ok, join_activity, participation} =
+        ActivityPub.join(event, participant_actor, false, %{metadata: %{role: :not_approved}})
+
+      accept_data =
+        File.read!("test/fixtures/mastodon-accept-activity.json")
+        |> Jason.decode!()
+        |> Map.put("actor", organizer_url)
+        |> Map.put("object", participation.url)
+
+      {:ok, accept_activity, _} = Transmogrifier.handle_incoming(accept_data)
+      assert accept_activity.data["object"]["id"] == join_activity.data["id"]
+      assert accept_activity.data["object"]["id"] =~ "/join/"
+      assert accept_activity.data["id"] =~ "/accept/join/"
+
+      # We don't accept already accepted Accept activities
+      :error = Transmogrifier.handle_incoming(accept_data)
+    end
+  end
+
+  describe "handle incoming reject join activities" do
+    test "it accepts Reject activities for Join activities" do
+      %Actor{url: organizer_url} = organizer = insert(:actor)
+      %Actor{} = participant_actor = insert(:actor)
+
+      %Event{} = event = insert(:event, organizer_actor: organizer, join_options: :restricted)
+
+      {:ok, join_activity, participation} = ActivityPub.join(event, participant_actor)
+
+      reject_data =
+        File.read!("test/fixtures/mastodon-reject-activity.json")
+        |> Jason.decode!()
+        |> Map.put("actor", organizer_url)
+        |> Map.put("object", participation.url)
+
+      {:ok, reject_activity, _} = Transmogrifier.handle_incoming(reject_data)
+      assert reject_activity.data["object"]["id"] == join_activity.data["id"]
+      assert reject_activity.data["object"]["id"] =~ "/join/"
+      assert reject_activity.data["id"] =~ "/reject/join/"
+
+      # We don't accept already rejected Reject activities
+      assert capture_log([level: :warn], fn ->
+               assert :error == Transmogrifier.handle_incoming(reject_data)
+             end) =~
+               "Unable to process Reject activity \"http://mastodon.example.org/users/admin#rejects/follows/4\". Object \"#{
+                 join_activity.data["id"]
+               }\" wasn't found."
+
+      # Organiser is not present since we use factories directly
+      assert event.id
+             |> Events.list_participants_for_event()
+             |> Map.get(:elements)
+             |> Enum.map(& &1.role) == [:rejected]
+    end
+  end
+end