Add test to the follow backend

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

test/mobilizon/actors/actors_test.exs

@@ -579,6 +579,31 @@ defmodule Mobilizon.ActorsTest do
       follower = create_test_follower(context)
       assert %Ecto.Changeset{} = Actors.change_follower(follower)
     end
+
+    test "follow/3 makes an actor follow another", %{actor: actor, target_actor: target_actor} do
+      # Preloading followers/followings
+      actor = Actors.get_actor_with_everything!(actor.id)
+      target_actor = Actors.get_actor_with_everything!(target_actor.id)
+
+      {:ok, follower} = Actor.follow(actor, target_actor)
+      assert follower.actor.id == actor.id
+
+      # Referesh followers/followings
+      actor = Actors.get_actor_with_everything!(actor.id)
+      target_actor = Actors.get_actor_with_everything!(target_actor.id)
+
+      assert target_actor.followers |> Enum.map(&(&1.actor_id)) == [actor.id]
+      assert actor.followings |> Enum.map(&(&1.target_actor_id)) == [target_actor.id]
+
+      # Test if actor is already following target actor
+      {:error, msg} = Actor.follow(actor, target_actor)
+      assert msg =~ "already following"
+
+      # Test if target actor is suspended
+      target_actor = %{target_actor | suspended: true}
+      {:error, msg} = Actor.follow(actor, target_actor)
+      assert msg =~ "suspended"
+    end
   end
 
   describe "members" do