pleroma/test/web/activity_pub/activity_pub_test.exs

defmodule Pleroma.Web.ActivityPub.ActivityPubTest do
  use Pleroma.DataCase
  alias Pleroma.Web.ActivityPub.ActivityPub
  alias Pleroma.Web.ActivityPub.Utils
  alias Pleroma.{Activity, Object, User}
  alias Pleroma.Builders.ActivityBuilder

  import Pleroma.Factory

  describe "building a user from his ap id" do
    test "it returns a user" do
      user_id = "http://mastodon.example.org/users/admin"
      {:ok, user} = ActivityPub.make_user_from_ap_id(user_id)
      assert user.ap_id == user_id
      assert user.nickname == "admin@mastodon.example.org"
      assert user.info["source_data"]
      assert user.info["ap_enabled"]
      assert user.follower_address == "http://mastodon.example.org/users/admin/followers"
    end
  end

  describe "insertion" do
    test "returns the activity if one with the same id is already in" do
      activity = insert(:note_activity)
      {:ok, new_activity}= ActivityPub.insert(activity.data)

      assert activity == new_activity
    end

    test "inserts a given map into the activity database, giving it an id if it has none." do
      data = %{
        "ok" => true
      }

      {:ok, %Activity{} = activity} = ActivityPub.insert(data)
      assert activity.data["ok"] == data["ok"]
      assert is_binary(activity.data["id"])

      given_id = "bla"
      data = %{
        "ok" => true,
        "id" => given_id
      }

      {:ok, %Activity{} = activity} = ActivityPub.insert(data)
      assert activity.data["ok"] == data["ok"]
      assert activity.data["id"] == given_id
    end

    test "adds an id to a given object if it lacks one and inserts it to the object database" do
      data = %{
        "object" => %{
          "ok" => true
        }
      }

      {:ok, %Activity{} = activity} = ActivityPub.insert(data)
      assert is_binary(activity.data["object"]["id"])
      assert %Object{} = Object.get_by_ap_id(activity.data["object"]["id"])
    end
  end

  describe "create activities" do
    test "removes doubled 'to' recipients" do
      {:ok, activity} = ActivityPub.create(%{to: ["user1", "user1", "user2"], actor: %User{ap_id: "1"}, context: "", object: %{}})
      assert activity.data["to"] == ["user1", "user2"]
      assert activity.actor == "1"
      assert activity.recipients == ["user1", "user2"]
    end
  end

  describe "fetch activities for recipients" do
    test "retrieve the activities for certain recipients" do
      {:ok, activity_one} = ActivityBuilder.insert(%{"to" => ["someone"]})
      {:ok, activity_two} = ActivityBuilder.insert(%{"to" => ["someone_else"]})
      {:ok, _activity_three} = ActivityBuilder.insert(%{"to" => ["noone"]})

      activities = ActivityPub.fetch_activities(["someone", "someone_else"])
      assert length(activities) == 2
      assert activities == [activity_one, activity_two]
    end
  end

  describe "fetch activities in context" do
    test "retrieves activities that have a given context" do
      {:ok, activity} = ActivityBuilder.insert(%{"type" => "Create", "context" => "2hu"})
      {:ok, activity_two} = ActivityBuilder.insert(%{"type" => "Create", "context" => "2hu"})
      {:ok, _activity_three} = ActivityBuilder.insert(%{"type" => "Create", "context" => "3hu"})
      {:ok, _activity_four} = ActivityBuilder.insert(%{"type" => "Announce", "context" => "2hu"})
      activity_five = insert(:note_activity)
      user = insert(:user)

      {:ok, user} = User.block(user, %{ap_id: activity_five.data["actor"]})

      activities = ActivityPub.fetch_activities_for_context("2hu", %{"blocking_user" => user})
      assert activities == [activity_two, activity]
    end
  end

  test "doesn't return blocked activities" do
    activity_one = insert(:note_activity)
    activity_two = insert(:note_activity)
    user = insert(:user)
    {:ok, user} = User.block(user, %{ap_id: activity_one.data["actor"]})

    activities = ActivityPub.fetch_activities([], %{"blocking_user" => user})

    assert Enum.member?(activities, activity_two)
    refute Enum.member?(activities, activity_one)

    {:ok, user} = User.unblock(user, %{ap_id: activity_one.data["actor"]})

    activities = ActivityPub.fetch_activities([], %{"blocking_user" => user})

    assert Enum.member?(activities, activity_two)
    assert Enum.member?(activities, activity_one)

    activities = ActivityPub.fetch_activities([], %{"blocking_user" => nil})

    assert Enum.member?(activities, activity_two)
    assert Enum.member?(activities, activity_one)
  end

  describe "public fetch activities" do
    test "retrieves public activities" do
      _activities = ActivityPub.fetch_public_activities

      %{public: public} = ActivityBuilder.public_and_non_public

      activities = ActivityPub.fetch_public_activities
      assert length(activities) == 1
      assert Enum.at(activities, 0) == public
    end

    test "retrieves a maximum of 20 activities" do
      activities = ActivityBuilder.insert_list(30)
      last_expected = List.last(activities)

      activities = ActivityPub.fetch_public_activities
      last = List.last(activities)

      assert length(activities) == 20
      assert last == last_expected
    end

    test "retrieves ids starting from a since_id" do
      activities = ActivityBuilder.insert_list(30)
      later_activities = ActivityBuilder.insert_list(10)
      since_id = List.last(activities).id
      last_expected = List.last(later_activities)

      activities = ActivityPub.fetch_public_activities(%{"since_id" => since_id})
      last = List.last(activities)

      assert length(activities) == 10
      assert last == last_expected
    end

    test "retrieves ids up to max_id" do
      _first_activities = ActivityBuilder.insert_list(10)
      activities = ActivityBuilder.insert_list(20)
      later_activities = ActivityBuilder.insert_list(10)
      max_id = List.first(later_activities).id
      last_expected = List.last(activities)

      activities = ActivityPub.fetch_public_activities(%{"max_id" => max_id})
      last = List.last(activities)

      assert length(activities) == 20
      assert last == last_expected
    end
  end

  describe "like an object" do
    test "adds a like activity to the db" do
      note_activity = insert(:note_activity)
      object = Object.get_by_ap_id(note_activity.data["object"]["id"])
      user = insert(:user)
      user_two = insert(:user)

      {:ok, like_activity, object} = ActivityPub.like(user, object)

      assert like_activity.data["actor"] == user.ap_id
      assert like_activity.data["type"] == "Like"
      assert like_activity.data["object"] == object.data["id"]
      assert like_activity.data["to"] == [User.ap_followers(user), note_activity.data["actor"]]
      assert like_activity.data["context"] == object.data["context"]
      assert object.data["like_count"] == 1
      assert object.data["likes"] == [user.ap_id]

      # Just return the original activity if the user already liked it.
      {:ok, same_like_activity, object} = ActivityPub.like(user, object)

      assert like_activity == same_like_activity
      assert object.data["likes"] == [user.ap_id]

      [note_activity] = Activity.all_by_object_ap_id(object.data["id"])
      assert note_activity.data["object"]["like_count"] == 1

      {:ok, _like_activity, object} = ActivityPub.like(user_two, object)
      assert object.data["like_count"] == 2
    end
  end

  describe "unliking" do
    test "unliking a previously liked object" do
      note_activity = insert(:note_activity)
      object = Object.get_by_ap_id(note_activity.data["object"]["id"])
      user = insert(:user)

      # Unliking something that hasn't been liked does nothing
      {:ok, object} = ActivityPub.unlike(user, object)
      assert object.data["like_count"] == 0

      {:ok, like_activity, object} = ActivityPub.like(user, object)
      assert object.data["like_count"] == 1

      {:ok, object} = ActivityPub.unlike(user, object)
      assert object.data["like_count"] == 0

      assert Repo.get(Activity, like_activity.id) == nil
    end
  end

  describe "announcing an object" do
    test "adds an announce activity to the db" do
      note_activity = insert(:note_activity)
      object = Object.get_by_ap_id(note_activity.data["object"]["id"])
      user = insert(:user)

      {:ok, announce_activity, object} = ActivityPub.announce(user, object)
      assert object.data["announcement_count"] == 1
      assert object.data["announcements"] == [user.ap_id]
      assert announce_activity.data["to"] == [User.ap_followers(user), note_activity.data["actor"]]
      assert announce_activity.data["object"] == object.data["id"]
      assert announce_activity.data["actor"] == user.ap_id
      assert announce_activity.data["context"] == object.data["context"]
    end
  end

  describe "uploading files" do
    test "copies the file to the configured folder" do
      file = %Plug.Upload{content_type: "image/jpg", path: Path.absname("test/fixtures/image.jpg"), filename: "an_image.jpg"}

      {:ok, %Object{} = object} = ActivityPub.upload(file)
      assert object.data["name"] == "an_image.jpg"
    end

    test "works with base64 encoded images" do
      file = %{
        "img" => data_uri()
      }

      {:ok, %Object{}} = ActivityPub.upload(file)
    end
  end

  describe "fetch the latest Follow" do
    test "fetches the latest Follow activity" do
      %Activity{data: %{"type" => "Follow"}} = activity = insert(:follow_activity)
      follower = Repo.get_by(User, ap_id: activity.data["actor"])
      followed = Repo.get_by(User, ap_id: activity.data["object"])

      assert activity == Utils.fetch_latest_follow(follower, followed)
    end
  end

  describe "fetching an object" do
    test "it fetches an object" do
      {:ok, object} = ActivityPub.fetch_object_from_id("http://mastodon.example.org/@admin/99541947525187367")
      assert activity = Activity.get_create_activity_by_object_ap_id(object.data["id"])
      assert activity.data["id"]

      {:ok, object_again} = ActivityPub.fetch_object_from_id("http://mastodon.example.org/@admin/99541947525187367")

      assert [attachment] = object.data["attachment"]
      assert is_list(attachment["url"])

      assert object == object_again
    end

    test "it works with objects only available via Ostatus" do
      {:ok, object} = ActivityPub.fetch_object_from_id("https://shitposter.club/notice/2827873")
      assert activity = Activity.get_create_activity_by_object_ap_id(object.data["id"])
      assert activity.data["id"]

      {:ok, object_again} = ActivityPub.fetch_object_from_id("https://shitposter.club/notice/2827873")

      assert object == object_again
    end
  end

  describe "following / unfollowing" do
    test "creates a follow activity" do
      follower = insert(:user)
      followed = insert(:user)

      {:ok, activity} = ActivityPub.follow(follower, followed)
      assert activity.data["type"] == "Follow"
      assert activity.data["actor"] == follower.ap_id
      assert activity.data["object"] == followed.ap_id
    end

    test "creates an undo activity for the last follow" do
      follower = insert(:user)
      followed = insert(:user)

      {:ok, follow_activity} = ActivityPub.follow(follower, followed)
      {:ok, activity} = ActivityPub.unfollow(follower, followed)

      assert activity.data["type"] == "Undo"
      assert activity.data["actor"] == follower.ap_id
      assert activity.data["object"] == follow_activity.data["id"]
    end
  end

  describe "deletion" do
    test "it creates a delete activity and deletes the original object" do
      note = insert(:note_activity)
      object = Object.get_by_ap_id(note.data["object"]["id"])
      {:ok, delete} = ActivityPub.delete(object)

      assert delete.data["type"] == "Delete"
      assert delete.data["actor"] == note.data["actor"]
      assert delete.data["object"] == note.data["object"]["id"]

      assert Repo.get(Activity, delete.id) != nil

      assert Repo.get(Object, object.id) == nil
    end
  end

  def data_uri do
    "data:image/jpeg;base64,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
  end
end