test_serializers.py

import io
import pytest
import uuid

from django.core.paginator import Paginator
from django.utils import timezone

from funkwhale_api.federation import models, serializers, utils


def test_actor_serializer_from_ap(db):
    payload = {
        "id": "https://test.federation/user",
        "type": "Person",
        "following": "https://test.federation/user/following",
        "followers": "https://test.federation/user/followers",
        "inbox": "https://test.federation/user/inbox",
        "outbox": "https://test.federation/user/outbox",
        "preferredUsername": "user",
        "name": "Real User",
        "summary": "Hello world",
        "url": "https://test.federation/@user",
        "manuallyApprovesFollowers": False,
        "publicKey": {
            "id": "https://test.federation/user#main-key",
            "owner": "https://test.federation/user",
            "publicKeyPem": "yolo",
        },
        "endpoints": {"sharedInbox": "https://test.federation/inbox"},
    }

    serializer = serializers.ActorSerializer(data=payload)
    assert serializer.is_valid(raise_exception=True)

    actor = serializer.build()

    assert actor.fid == payload["id"]
    assert actor.inbox_url == payload["inbox"]
    assert actor.outbox_url == payload["outbox"]
    assert actor.shared_inbox_url == payload["endpoints"]["sharedInbox"]
    assert actor.followers_url == payload["followers"]
    assert actor.following_url == payload["following"]
    assert actor.public_key == payload["publicKey"]["publicKeyPem"]
    assert actor.preferred_username == payload["preferredUsername"]
    assert actor.name == payload["name"]
    assert actor.domain == "test.federation"
    assert actor.summary == payload["summary"]
    assert actor.type == "Person"
    assert actor.manually_approves_followers == payload["manuallyApprovesFollowers"]


def test_actor_serializer_only_mandatory_field_from_ap(db):
    payload = {
        "id": "https://test.federation/user",
        "type": "Person",
        "following": "https://test.federation/user/following",
        "followers": "https://test.federation/user/followers",
        "inbox": "https://test.federation/user/inbox",
        "outbox": "https://test.federation/user/outbox",
        "preferredUsername": "user",
    }

    serializer = serializers.ActorSerializer(data=payload)
    assert serializer.is_valid(raise_exception=True)

    actor = serializer.build()

    assert actor.fid == payload["id"]
    assert actor.inbox_url == payload["inbox"]
    assert actor.outbox_url == payload["outbox"]
    assert actor.followers_url == payload["followers"]
    assert actor.following_url == payload["following"]
    assert actor.preferred_username == payload["preferredUsername"]
    assert actor.domain == "test.federation"
    assert actor.type == "Person"
    assert actor.manually_approves_followers is None


def test_actor_serializer_to_ap():
    expected = {
        "@context": [
            "https://www.w3.org/ns/activitystreams",
            "https://w3id.org/security/v1",
            {},
        ],
        "id": "https://test.federation/user",
        "type": "Person",
        "following": "https://test.federation/user/following",
        "followers": "https://test.federation/user/followers",
        "inbox": "https://test.federation/user/inbox",
        "outbox": "https://test.federation/user/outbox",
        "preferredUsername": "user",
        "name": "Real User",
        "summary": "Hello world",
        "manuallyApprovesFollowers": False,
        "publicKey": {
            "id": "https://test.federation/user#main-key",
            "owner": "https://test.federation/user",
            "publicKeyPem": "yolo",
        },
        "endpoints": {"sharedInbox": "https://test.federation/inbox"},
    }
    ac = models.Actor(
        fid=expected["id"],
        inbox_url=expected["inbox"],
        outbox_url=expected["outbox"],
        shared_inbox_url=expected["endpoints"]["sharedInbox"],
        followers_url=expected["followers"],
        following_url=expected["following"],
        public_key=expected["publicKey"]["publicKeyPem"],
        preferred_username=expected["preferredUsername"],
        name=expected["name"],
        domain="test.federation",
        summary=expected["summary"],
        type="Person",
        manually_approves_followers=False,
    )
    serializer = serializers.ActorSerializer(ac)

    assert serializer.data == expected


def test_webfinger_serializer():
    expected = {
        "subject": "acct:service@test.federation",
        "links": [
            {
                "rel": "self",
                "href": "https://test.federation/federation/instance/actor",
                "type": "application/activity+json",
            }
        ],
        "aliases": ["https://test.federation/federation/instance/actor"],
    }
    actor = models.Actor(
        fid=expected["links"][0]["href"],
        preferred_username="service",
        domain="test.federation",
    )
    serializer = serializers.ActorWebfingerSerializer(actor)

    assert serializer.data == expected


def test_follow_serializer_to_ap(factories):
    follow = factories["federation.Follow"](local=True)
    serializer = serializers.FollowSerializer(follow)

    expected = {
        "@context": [
            "https://www.w3.org/ns/activitystreams",
            "https://w3id.org/security/v1",
            {},
        ],
        "id": follow.get_federation_id(),
        "type": "Follow",
        "actor": follow.actor.fid,
        "object": follow.target.fid,
    }

    assert serializer.data == expected


def test_follow_serializer_save(factories):
    actor = factories["federation.Actor"]()
    target = factories["federation.Actor"]()

    data = {
        "id": "https://test.follow",
        "type": "Follow",
        "actor": actor.fid,
        "object": target.fid,
    }
    serializer = serializers.FollowSerializer(data=data)

    assert serializer.is_valid(raise_exception=True)

    follow = serializer.save()

    assert follow.pk is not None
    assert follow.actor == actor
    assert follow.target == target
    assert follow.approved is None


def test_follow_serializer_save_validates_on_context(factories):
    actor = factories["federation.Actor"]()
    target = factories["federation.Actor"]()
    impostor = factories["federation.Actor"]()

    data = {
        "id": "https://test.follow",
        "type": "Follow",
        "actor": actor.fid,
        "object": target.fid,
    }
    serializer = serializers.FollowSerializer(
        data=data, context={"follow_actor": impostor, "follow_target": impostor}
    )

    assert serializer.is_valid() is False

    assert "actor" in serializer.errors
    assert "object" in serializer.errors


def test_accept_follow_serializer_representation(factories):
    follow = factories["federation.Follow"](approved=None)

    expected = {
        "@context": [
            "https://www.w3.org/ns/activitystreams",
            "https://w3id.org/security/v1",
            {},
        ],
        "id": follow.get_federation_id() + "/accept",
        "type": "Accept",
        "actor": follow.target.fid,
        "object": serializers.FollowSerializer(follow).data,
    }

    serializer = serializers.AcceptFollowSerializer(follow)

    assert serializer.data == expected


def test_accept_follow_serializer_save(factories):
    follow = factories["federation.Follow"](approved=None)

    data = {
        "@context": [
            "https://www.w3.org/ns/activitystreams",
            "https://w3id.org/security/v1",
            {},
        ],
        "id": follow.get_federation_id() + "/accept",
        "type": "Accept",
        "actor": follow.target.fid,
        "object": serializers.FollowSerializer(follow).data,
    }

    serializer = serializers.AcceptFollowSerializer(data=data)
    assert serializer.is_valid(raise_exception=True)
    serializer.save()

    follow.refresh_from_db()

    assert follow.approved is True


def test_accept_follow_serializer_validates_on_context(factories):
    follow = factories["federation.Follow"](approved=None)
    impostor = factories["federation.Actor"]()
    data = {
        "@context": [
            "https://www.w3.org/ns/activitystreams",
            "https://w3id.org/security/v1",
            {},
        ],
        "id": follow.get_federation_id() + "/accept",
        "type": "Accept",
        "actor": impostor.url,
        "object": serializers.FollowSerializer(follow).data,
    }

    serializer = serializers.AcceptFollowSerializer(
        data=data, context={"follow_actor": impostor, "follow_target": impostor}
    )

    assert serializer.is_valid() is False
    assert "actor" in serializer.errors["object"]
    assert "object" in serializer.errors["object"]


def test_undo_follow_serializer_representation(factories):
    follow = factories["federation.Follow"](approved=True)

    expected = {
        "@context": [
            "https://www.w3.org/ns/activitystreams",
            "https://w3id.org/security/v1",
            {},
        ],
        "id": follow.get_federation_id() + "/undo",
        "type": "Undo",
        "actor": follow.actor.fid,
        "object": serializers.FollowSerializer(follow).data,
    }

    serializer = serializers.UndoFollowSerializer(follow)

    assert serializer.data == expected


def test_undo_follow_serializer_save(factories):
    follow = factories["federation.Follow"](approved=True)

    data = {
        "@context": [
            "https://www.w3.org/ns/activitystreams",
            "https://w3id.org/security/v1",
            {},
        ],
        "id": follow.get_federation_id() + "/undo",
        "type": "Undo",
        "actor": follow.actor.fid,
        "object": serializers.FollowSerializer(follow).data,
    }

    serializer = serializers.UndoFollowSerializer(data=data)
    assert serializer.is_valid(raise_exception=True)
    serializer.save()

    with pytest.raises(models.Follow.DoesNotExist):
        follow.refresh_from_db()


def test_undo_follow_serializer_validates_on_context(factories):
    follow = factories["federation.Follow"](approved=True)
    impostor = factories["federation.Actor"]()
    data = {
        "@context": [
            "https://www.w3.org/ns/activitystreams",
            "https://w3id.org/security/v1",
            {},
        ],
        "id": follow.get_federation_id() + "/undo",
        "type": "Undo",
        "actor": impostor.url,
        "object": serializers.FollowSerializer(follow).data,
    }

    serializer = serializers.UndoFollowSerializer(
        data=data, context={"follow_actor": impostor, "follow_target": impostor}
    )

    assert serializer.is_valid() is False
    assert "actor" in serializer.errors["object"]
    assert "object" in serializer.errors["object"]


def test_paginated_collection_serializer(factories):
    uploads = factories["music.Upload"].create_batch(size=5)
    actor = factories["federation.Actor"](local=True)

    conf = {
        "id": "https://test.federation/test",
        "items": uploads,
        "item_serializer": serializers.UploadSerializer,
        "actor": actor,
        "page_size": 2,
    }
    expected = {
        "@context": [
            "https://www.w3.org/ns/activitystreams",
            "https://w3id.org/security/v1",
            {},
        ],
        "type": "Collection",
        "id": conf["id"],
        "actor": actor.fid,
        "totalItems": len(uploads),
        "current": conf["id"] + "?page=1",
        "last": conf["id"] + "?page=3",
        "first": conf["id"] + "?page=1",
    }

    serializer = serializers.PaginatedCollectionSerializer(conf)

    assert serializer.data == expected


def test_paginated_collection_serializer_validation():
    data = {
        "type": "Collection",
        "id": "https://test.federation/test",
        "totalItems": 5,
        "actor": "http://test.actor",
        "first": "https://test.federation/test?page=1",
        "last": "https://test.federation/test?page=1",
        "items": [],
    }

    serializer = serializers.PaginatedCollectionSerializer(data=data)

    assert serializer.is_valid(raise_exception=True) is True
    assert serializer.validated_data["totalItems"] == 5
    assert serializer.validated_data["id"] == data["id"]
    assert serializer.validated_data["actor"] == data["actor"]


def test_collection_page_serializer_validation():
    base = "https://test.federation/test"
    data = {
        "type": "CollectionPage",
        "id": base + "?page=2",
        "totalItems": 5,
        "actor": "https://test.actor",
        "items": [],
        "first": "https://test.federation/test?page=1",
        "last": "https://test.federation/test?page=3",
        "prev": base + "?page=1",
        "next": base + "?page=3",
        "partOf": base,
    }

    serializer = serializers.CollectionPageSerializer(data=data)

    assert serializer.is_valid(raise_exception=True) is True
    assert serializer.validated_data["totalItems"] == 5
    assert serializer.validated_data["id"] == data["id"]
    assert serializer.validated_data["actor"] == data["actor"]
    assert serializer.validated_data["items"] == []
    assert serializer.validated_data["prev"] == data["prev"]
    assert serializer.validated_data["next"] == data["next"]
    assert serializer.validated_data["partOf"] == data["partOf"]


def test_collection_page_serializer_can_validate_child():
    data = {
        "type": "CollectionPage",
        "id": "https://test.page?page=2",
        "actor": "https://test.actor",
        "first": "https://test.page?page=1",
        "last": "https://test.page?page=3",
        "partOf": "https://test.page",
        "totalItems": 1,
        "items": [{"in": "valid"}],
    }

    serializer = serializers.CollectionPageSerializer(
        data=data, context={"item_serializer": serializers.UploadSerializer}
    )

    # child are validated but not included in data if not valid
    assert serializer.is_valid(raise_exception=True) is True
    assert len(serializer.validated_data["items"]) == 0


def test_collection_page_serializer(factories):
    uploads = factories["music.Upload"].create_batch(size=5)
    actor = factories["federation.Actor"](local=True)

    conf = {
        "id": "https://test.federation/test",
        "item_serializer": serializers.UploadSerializer,
        "actor": actor,
        "page": Paginator(uploads, 2).page(2),
    }
    expected = {
        "@context": [
            "https://www.w3.org/ns/activitystreams",
            "https://w3id.org/security/v1",
            {},
        ],
        "type": "CollectionPage",
        "id": conf["id"] + "?page=2",
        "actor": actor.fid,
        "totalItems": len(uploads),
        "partOf": conf["id"],
        "prev": conf["id"] + "?page=1",
        "next": conf["id"] + "?page=3",
        "first": conf["id"] + "?page=1",
        "last": conf["id"] + "?page=3",
        "items": [
            conf["item_serializer"](
                i, context={"actor": actor, "include_ap_context": False}
            ).data
            for i in conf["page"].object_list
        ],
    }

    serializer = serializers.CollectionPageSerializer(conf)

    assert serializer.data == expected


def test_music_library_serializer_to_ap(factories):
    library = factories["music.Library"]()
    # pending, errored and skippednot included
    factories["music.Upload"](import_status="pending")
    factories["music.Upload"](import_status="errored")
    factories["music.Upload"](import_status="finished")
    serializer = serializers.LibrarySerializer(library)
    expected = {
        "@context": [
            "https://www.w3.org/ns/activitystreams",
            "https://w3id.org/security/v1",
            {},
        ],
        "type": "Library",
        "id": library.fid,
        "name": library.name,
        "summary": library.description,
        "audience": "",
        "actor": library.actor.fid,
        "totalItems": 0,
        "current": library.fid + "?page=1",
        "last": library.fid + "?page=1",
        "first": library.fid + "?page=1",
        "followers": library.followers_url,
    }

    assert serializer.data == expected


def test_music_library_serializer_from_public(factories, mocker):
    actor = factories["federation.Actor"]()
    retrieve = mocker.patch(
        "funkwhale_api.federation.utils.retrieve", return_value=actor
    )
    data = {
        "@context": [
            "https://www.w3.org/ns/activitystreams",
            "https://w3id.org/security/v1",
            {},
        ],
        "audience": "https://www.w3.org/ns/activitystreams#Public",
        "name": "Hello",
        "summary": "World",
        "type": "Library",
        "id": "https://library.id",
        "followers": "https://library.id/followers",
        "actor": actor.fid,
        "totalItems": 12,
        "first": "https://library.id?page=1",
        "last": "https://library.id?page=2",
    }
    serializer = serializers.LibrarySerializer(data=data)

    assert serializer.is_valid(raise_exception=True)

    library = serializer.save()

    assert library.actor == actor
    assert library.fid == data["id"]
    assert library.uploads_count == data["totalItems"]
    assert library.privacy_level == "everyone"
    assert library.name == "Hello"
    assert library.description == "World"
    assert library.followers_url == data["followers"]

    retrieve.assert_called_once_with(
        actor.fid,
        queryset=actor.__class__,
        serializer_class=serializers.ActorSerializer,
    )


def test_music_library_serializer_from_private(factories, mocker):
    actor = factories["federation.Actor"]()
    retrieve = mocker.patch(
        "funkwhale_api.federation.utils.retrieve", return_value=actor
    )
    data = {
        "@context": [
            "https://www.w3.org/ns/activitystreams",
            "https://w3id.org/security/v1",
            {},
        ],
        "audience": "",
        "name": "Hello",
        "summary": "World",
        "type": "Library",
        "id": "https://library.id",
        "followers": "https://library.id/followers",
        "actor": actor.fid,
        "totalItems": 12,
        "first": "https://library.id?page=1",
        "last": "https://library.id?page=2",
    }
    serializer = serializers.LibrarySerializer(data=data)

    assert serializer.is_valid(raise_exception=True)

    library = serializer.save()

    assert library.actor == actor
    assert library.fid == data["id"]
    assert library.uploads_count == data["totalItems"]
    assert library.privacy_level == "me"
    assert library.name == "Hello"
    assert library.description == "World"
    assert library.followers_url == data["followers"]
    retrieve.assert_called_once_with(
        actor.fid,
        queryset=actor.__class__,
        serializer_class=serializers.ActorSerializer,
    )


def test_activity_pub_artist_serializer_to_ap(factories):
    artist = factories["music.Artist"]()
    expected = {
        "@context": serializers.AP_CONTEXT,
        "type": "Artist",
        "id": artist.fid,
        "name": artist.name,
        "musicbrainzId": artist.mbid,
        "published": artist.creation_date.isoformat(),
    }
    serializer = serializers.ArtistSerializer(artist)

    assert serializer.data == expected


def test_activity_pub_album_serializer_to_ap(factories):
    album = factories["music.Album"]()

    expected = {
        "@context": serializers.AP_CONTEXT,
        "type": "Album",
        "id": album.fid,
        "name": album.title,
        "cover": {
            "type": "Link",
            "mediaType": "image/jpeg",
            "href": utils.full_url(album.cover.url),
        },
        "musicbrainzId": album.mbid,
        "published": album.creation_date.isoformat(),
        "released": album.release_date.isoformat(),
        "artists": [
            serializers.ArtistSerializer(
                album.artist, context={"include_ap_context": False}
            ).data
        ],
    }
    serializer = serializers.AlbumSerializer(album)

    assert serializer.data == expected


def test_activity_pub_track_serializer_to_ap(factories):
    track = factories["music.Track"]()
    expected = {
        "@context": serializers.AP_CONTEXT,
        "published": track.creation_date.isoformat(),
        "type": "Track",
        "musicbrainzId": track.mbid,
        "id": track.fid,
        "name": track.title,
        "position": track.position,
        "artists": [
            serializers.ArtistSerializer(
                track.artist, context={"include_ap_context": False}
            ).data
        ],
        "album": serializers.AlbumSerializer(
            track.album, context={"include_ap_context": False}
        ).data,
    }
    serializer = serializers.TrackSerializer(track)

    assert serializer.data == expected


def test_activity_pub_track_serializer_from_ap(factories, r_mock):
    activity = factories["federation.Activity"]()
    published = timezone.now()
    released = timezone.now().date()
    data = {
        "type": "Track",
        "id": "http://hello.track",
        "published": published.isoformat(),
        "musicbrainzId": str(uuid.uuid4()),
        "name": "Black in back",
        "position": 5,
        "album": {
            "type": "Album",
            "id": "http://hello.album",
            "name": "Purple album",
            "musicbrainzId": str(uuid.uuid4()),
            "published": published.isoformat(),
            "released": released.isoformat(),
            "cover": {
                "type": "Link",
                "href": "https://cover.image/test.png",
                "mediaType": "image/png",
            },
            "artists": [
                {
                    "type": "Artist",
                    "id": "http://hello.artist",
                    "name": "John Smith",
                    "musicbrainzId": str(uuid.uuid4()),
                    "published": published.isoformat(),
                }
            ],
        },
        "artists": [
            {
                "type": "Artist",
                "id": "http://hello.trackartist",
                "name": "Bob Smith",
                "musicbrainzId": str(uuid.uuid4()),
                "published": published.isoformat(),
            }
        ],
    }
    r_mock.get(data["album"]["cover"]["href"], body=io.BytesIO(b"coucou"))
    serializer = serializers.TrackSerializer(data=data, context={"activity": activity})
    assert serializer.is_valid(raise_exception=True)

    track = serializer.save()
    album = track.album
    artist = track.artist
    album_artist = track.album.artist

    assert track.from_activity == activity
    assert track.fid == data["id"]
    assert track.title == data["name"]
    assert track.position == data["position"]
    assert track.creation_date == published
    assert str(track.mbid) == data["musicbrainzId"]

    assert album.from_activity == activity
    assert album.cover.read() == b"coucou"
    assert album.cover.path.endswith(".png")
    assert album.title == data["album"]["name"]
    assert album.fid == data["album"]["id"]
    assert str(album.mbid) == data["album"]["musicbrainzId"]
    assert album.creation_date == published
    assert album.release_date == released

    assert artist.from_activity == activity
    assert artist.name == data["artists"][0]["name"]
    assert artist.fid == data["artists"][0]["id"]
    assert str(artist.mbid) == data["artists"][0]["musicbrainzId"]
    assert artist.creation_date == published

    assert album_artist.from_activity == activity
    assert album_artist.name == data["album"]["artists"][0]["name"]
    assert album_artist.fid == data["album"]["artists"][0]["id"]
    assert str(album_artist.mbid) == data["album"]["artists"][0]["musicbrainzId"]
    assert album_artist.creation_date == published


def test_activity_pub_upload_serializer_from_ap(factories, mocker):
    activity = factories["federation.Activity"]()
    library = factories["music.Library"]()

    published = timezone.now()
    updated = timezone.now()
    released = timezone.now().date()
    data = {
        "@context": serializers.AP_CONTEXT,
        "type": "Audio",
        "id": "https://track.file",
        "name": "Ignored",
        "published": published.isoformat(),
        "updated": updated.isoformat(),
        "duration": 43,
        "bitrate": 42,
        "size": 66,
        "url": {"href": "https://audio.file", "type": "Link", "mediaType": "audio/mp3"},
        "library": library.fid,
        "track": {
            "type": "Track",
            "id": "http://hello.track",
            "published": published.isoformat(),
            "musicbrainzId": str(uuid.uuid4()),
            "name": "Black in back",
            "position": 5,
            "album": {
                "type": "Album",
                "id": "http://hello.album",
                "name": "Purple album",
                "musicbrainzId": str(uuid.uuid4()),
                "published": published.isoformat(),
                "released": released.isoformat(),
                "artists": [
                    {
                        "type": "Artist",
                        "id": "http://hello.artist",
                        "name": "John Smith",
                        "musicbrainzId": str(uuid.uuid4()),
                        "published": published.isoformat(),
                    }
                ],
            },
            "artists": [
                {
                    "type": "Artist",
                    "id": "http://hello.trackartist",
                    "name": "Bob Smith",
                    "musicbrainzId": str(uuid.uuid4()),
                    "published": published.isoformat(),
                }
            ],
        },
    }

    serializer = serializers.UploadSerializer(data=data, context={"activity": activity})
    assert serializer.is_valid(raise_exception=True)
    track_create = mocker.spy(serializers.TrackSerializer, "create")
    upload = serializer.save()

    assert upload.track.from_activity == activity
    assert upload.from_activity == activity
    assert track_create.call_count == 1
    assert upload.fid == data["id"]
    assert upload.track.fid == data["track"]["id"]
    assert upload.duration == data["duration"]
    assert upload.size == data["size"]
    assert upload.bitrate == data["bitrate"]
    assert upload.source == data["url"]["href"]
    assert upload.mimetype == data["url"]["mediaType"]
    assert upload.creation_date == published
    assert upload.import_status == "finished"
    assert upload.modification_date == updated


def test_activity_pub_upload_serializer_validtes_library_actor(factories, mocker):
    library = factories["music.Library"]()
    usurpator = factories["federation.Actor"]()

    serializer = serializers.UploadSerializer(data={}, context={"actor": usurpator})

    with pytest.raises(serializers.serializers.ValidationError):
        serializer.validate_library(library.fid)


def test_activity_pub_audio_serializer_to_ap(factories):
    upload = factories["music.Upload"](
        mimetype="audio/mp3", bitrate=42, duration=43, size=44
    )
    expected = {
        "@context": serializers.AP_CONTEXT,
        "type": "Audio",
        "id": upload.fid,
        "name": upload.track.full_name,
        "published": upload.creation_date.isoformat(),
        "updated": upload.modification_date.isoformat(),
        "duration": upload.duration,
        "bitrate": upload.bitrate,
        "size": upload.size,
        "url": {
            "href": utils.full_url(upload.listen_url),
            "type": "Link",
            "mediaType": "audio/mp3",
        },
        "library": upload.library.fid,
        "track": serializers.TrackSerializer(
            upload.track, context={"include_ap_context": False}
        ).data,
    }

    serializer = serializers.UploadSerializer(upload)

    assert serializer.data == expected


def test_local_actor_serializer_to_ap(factories):
    expected = {
        "@context": [
            "https://www.w3.org/ns/activitystreams",
            "https://w3id.org/security/v1",
            {},
        ],
        "id": "https://test.federation/user",
        "type": "Person",
        "following": "https://test.federation/user/following",
        "followers": "https://test.federation/user/followers",
        "inbox": "https://test.federation/user/inbox",
        "outbox": "https://test.federation/user/outbox",
        "preferredUsername": "user",
        "name": "Real User",
        "summary": "Hello world",
        "manuallyApprovesFollowers": False,
        "publicKey": {
            "id": "https://test.federation/user#main-key",
            "owner": "https://test.federation/user",
            "publicKeyPem": "yolo",
        },
        "endpoints": {"sharedInbox": "https://test.federation/inbox"},
    }
    ac = models.Actor.objects.create(
        fid=expected["id"],
        inbox_url=expected["inbox"],
        outbox_url=expected["outbox"],
        shared_inbox_url=expected["endpoints"]["sharedInbox"],
        followers_url=expected["followers"],
        following_url=expected["following"],
        public_key=expected["publicKey"]["publicKeyPem"],
        preferred_username=expected["preferredUsername"],
        name=expected["name"],
        domain="test.federation",
        summary=expected["summary"],
        type="Person",
        manually_approves_followers=False,
    )
    user = factories["users.User"]()
    user.actor = ac
    user.save()
    ac.refresh_from_db()
    expected["icon"] = {
        "type": "Image",
        "mediaType": "image/jpeg",
        "url": utils.full_url(user.avatar.crop["400x400"].url),
    }
    serializer = serializers.ActorSerializer(ac)

    assert serializer.data == expected


def test_activity_serializer_validate_recipients_empty(db):
    s = serializers.BaseActivitySerializer()

    with pytest.raises(serializers.serializers.ValidationError):
        s.validate_recipients({})

    with pytest.raises(serializers.serializers.ValidationError):
        s.validate_recipients({"to": []})

    with pytest.raises(serializers.serializers.ValidationError):
        s.validate_recipients({"cc": []})