improve album tests

docker/library-manager/scripts/music-download.ts

@@ -13,7 +13,7 @@ const client = new SubsonicClient(
 );
 
 for (const id of ["197", "199", "321"]) {
-  const res = await client.get("download", { id });
+  const { res } = await client.get("download", { id });
 
   let filename = res.headers.get("Content-Disposition")
     ?.split(";")[1];

docker/library-manager/scripts/setup-servers.ts

@@ -1,18 +1,65 @@
 #!/usr/bin/env -S deno --allow-all
+import { SubsonicClient } from "./util/subsonic.ts";
+import { sleep } from "./util/util.ts";
+
+async function scrobbleTrack(
+  client: SubsonicClient,
+  album: string,
+  track: number,
+) {
+  const { xml: albumsXml } = await client.get("getAlbumList2", {
+    type: "newest",
+  });
+  const albumId = albumsXml.querySelector(`album[name='${album}']`)?.id;
+
+  const { xml: songsXml } = await client.get("getAlbum", { id: albumId! });
+  const songId = songsXml.querySelector(`song[track='${track}']`)?.id;
+
+  await client.get("scrobble", {
+    id: songId!,
+    submission: "true",
+  });
+}
+
+async function setupTestData(client: SubsonicClient) {
+  await scrobbleTrack(client, "Retroconnaissance EP", 1);
+  await sleep(1_000);
+  await scrobbleTrack(client, "Retroconnaissance EP", 2);
+  await sleep(1_000);
+  await scrobbleTrack(client, "Kosmonaut", 1);
+}
 
 async function setupNavidrome() {
   console.log("setting up navidrome...");
 
+  const baseUrl = "http://navidrome:4533";
+  const username = "admin";
+  const password = "password";
+
   await fetch("http://navidrome:4533/auth/createAdmin", {
     method: "POST",
     headers: { "Content-Type": "application/json" },
-    body: JSON.stringify({
-      username: "admin",
-      password: "password",
-    }),
+    body: JSON.stringify({ username, password }),
   });
+
+  const client = new SubsonicClient(baseUrl, username, password);
+  await setupTestData(client);
 }
 
-await setupNavidrome();
+async function setupGonic() {
+  console.log("setting up gonic...");
+
+  const baseUrl = "http://gonic";
+  const username = "admin";
+  const password = "admin";
+
+  const client = new SubsonicClient(baseUrl, username, password);
+  await setupTestData(client);
+}
+
+await Promise.all([
+  setupNavidrome(),
+  setupGonic(),
+]);
 
 console.log("setup-servers complete");

docker/library-manager/scripts/util/subsonic.ts

@@ -1,3 +1,6 @@
+// @deno-types="npm:@types/jsdom@27.0.0"
+import { JSDOM } from "npm:jsdom@27.1.0";
+
 export class SubsonicClient {
   constructor(
     readonly baseUrl: string,
@@ -5,7 +8,18 @@ export class SubsonicClient {
     readonly password: string,
   ) {}
 
-  get(method: string, params?: Record<string, string>) {
+  async get(
+    method: "download",
+    params?: Record<string, string>,
+  ): Promise<{ res: Response; xml: undefined }>;
+  async get(
+    method: string,
+    params?: Record<string, string>,
+  ): Promise<{ res: Response; xml: Document }>;
+  async get(
+    method: string,
+    params?: Record<string, string>,
+  ): Promise<{ res: Response; xml: Document | undefined }> {
     const url = new URL(`rest/${method}.view`, this.baseUrl);
 
     url.searchParams.set("u", this.username);
@@ -19,6 +33,26 @@ export class SubsonicClient {
       );
     }
 
-    return fetch(url);
+    const res = await fetch(url);
+
+    let xml: Document | undefined;
+    if (res.headers.get("content-type")?.includes("xml")) {
+      xml = new JSDOM(await res.text(), {
+        contentType: "text/xml",
+      }).window.document;
+    }
+
+    if (!res.ok) {
+      let message = `HTTP error ${res.status}`;
+      if (xml) {
+        const error = xml.querySelector("error");
+        const errorCode = error?.getAttribute("code");
+        const errorMessage = error?.getAttribute("message");
+        message += `\nSubsonic error${errorCode}: ${errorMessage}`;
+      }
+      throw new Error(message);
+    }
+
+    return { res, xml };
   }
 }

docker/library-manager/scripts/util/util.ts

@@ -0,0 +1,3 @@
+export function sleep(milliseconds: number): Promise<void> {
+  return new Promise((resolve) => setTimeout(resolve, milliseconds));
+}

lib/sources/models.dart

@@ -3,6 +3,7 @@
 import 'package:freezed_annotation/freezed_annotation.dart';
 
 part 'models.freezed.dart';
+part 'models.g.dart';
 
 mixin Starred {
   DateTime? get starred;
@@ -67,6 +68,9 @@ abstract class SourceItem with _$SourceItem {
     String? genre,
     String? coverArt,
   }) = SourceSong;
+
+  factory SourceItem.fromJson(Map<String, dynamic> json) =>
+      _$SourceItemFromJson(json);
 }
 
 @freezed
@@ -76,4 +80,7 @@ abstract class SourcePlaylistSong with _$SourcePlaylistSong {
     required String songId,
     required int position,
   }) = _SourcePlaylistSong;
+
+  factory SourcePlaylistSong.fromJson(Map<String, dynamic> json) =>
+      _$SourcePlaylistSongFromJson(json);
 }

lib/sources/models.freezed.dart

@@ -11,6 +11,38 @@ part of 'models.dart';
 
 // dart format off
 T _$identity<T>(T value) => value;
+SourceItem _$SourceItemFromJson(
+  Map<String, dynamic> json
+) {
+        switch (json['runtimeType']) {
+                  case 'artist':
+          return SourceArtist.fromJson(
+            json
+          );
+                case 'album':
+          return SourceAlbum.fromJson(
+            json
+          );
+                case 'playlist':
+          return SourcePlaylist.fromJson(
+            json
+          );
+                case 'song':
+          return SourceSong.fromJson(
+            json
+          );
+        
+          default:
+            throw CheckedFromJsonException(
+  json,
+  'runtimeType',
+  'SourceItem',
+  'Invalid union type "${json['runtimeType']}"!'
+);
+        }
+      
+}
+
 /// @nodoc
 mixin _$SourceItem {
 
@@ -21,6 +53,8 @@ mixin _$SourceItem {
 @pragma('vm:prefer-inline')
 $SourceItemCopyWith<SourceItem> get copyWith => _$SourceItemCopyWithImpl<SourceItem>(this as SourceItem, _$identity);
 
+  /// Serializes this SourceItem to a JSON map.
+  Map<String, dynamic> toJson();
 
 
 @override
@@ -28,7 +62,7 @@ bool operator ==(Object other) {
   return identical(this, other) || (other.runtimeType == runtimeType&&other is SourceItem&&(identical(other.id, id) || other.id == id));
 }
 
-
+@JsonKey(includeFromJson: false, includeToJson: false)
 @override
 int get hashCode => Object.hash(runtimeType,id);
 
@@ -221,11 +255,11 @@ return song(_that.id,_that.albumId,_that.artistId,_that.title,_that.artist,_that
 }
 
 /// @nodoc
-
+@JsonSerializable()
 
 class SourceArtist with Starred implements SourceItem {
-  const SourceArtist({required this.id, required this.name, this.starred, this.smallImage, this.largeImage});
-  
+  const SourceArtist({required this.id, required this.name, this.starred, this.smallImage, this.largeImage, final  String? $type}): $type = $type ?? 'artist';
+  factory SourceArtist.fromJson(Map<String, dynamic> json) => _$SourceArtistFromJson(json);
 
 @override final  String id;
  final  String name;
@@ -233,20 +267,27 @@ class SourceArtist with Starred implements SourceItem {
  final  Uri? smallImage;
  final  Uri? largeImage;
 
+@JsonKey(name: 'runtimeType')
+final String $type;
+
+
 /// Create a copy of SourceItem
 /// with the given fields replaced by the non-null parameter values.
 @override @JsonKey(includeFromJson: false, includeToJson: false)
 @pragma('vm:prefer-inline')
 $SourceArtistCopyWith<SourceArtist> get copyWith => _$SourceArtistCopyWithImpl<SourceArtist>(this, _$identity);
 
-
+@override
+Map<String, dynamic> toJson() {
+  return _$SourceArtistToJson(this, );
+}
 
 @override
 bool operator ==(Object other) {
   return identical(this, other) || (other.runtimeType == runtimeType&&other is SourceArtist&&(identical(other.id, id) || other.id == id)&&(identical(other.name, name) || other.name == name)&&(identical(other.starred, starred) || other.starred == starred)&&(identical(other.smallImage, smallImage) || other.smallImage == smallImage)&&(identical(other.largeImage, largeImage) || other.largeImage == largeImage));
 }
 
-
+@JsonKey(includeFromJson: false, includeToJson: false)
 @override
 int get hashCode => Object.hash(runtimeType,id,name,starred,smallImage,largeImage);
 
@@ -295,11 +336,11 @@ as Uri?,
 }
 
 /// @nodoc
-
+@JsonSerializable()
 
 class SourceAlbum with Starred, CoverArt implements SourceItem {
-  const SourceAlbum({required this.id, this.artistId, required this.name, this.albumArtist, required this.created, this.coverArt, this.year, this.starred, this.genre, this.frequentRank, this.recentRank});
-  
+  const SourceAlbum({required this.id, this.artistId, required this.name, this.albumArtist, required this.created, this.coverArt, this.year, this.starred, this.genre, this.frequentRank, this.recentRank, final  String? $type}): $type = $type ?? 'album';
+  factory SourceAlbum.fromJson(Map<String, dynamic> json) => _$SourceAlbumFromJson(json);
 
 @override final  String id;
  final  String? artistId;
@@ -313,20 +354,27 @@ class SourceAlbum with Starred, CoverArt implements SourceItem {
  final  int? frequentRank;
  final  int? recentRank;
 
+@JsonKey(name: 'runtimeType')
+final String $type;
+
+
 /// Create a copy of SourceItem
 /// with the given fields replaced by the non-null parameter values.
 @override @JsonKey(includeFromJson: false, includeToJson: false)
 @pragma('vm:prefer-inline')
 $SourceAlbumCopyWith<SourceAlbum> get copyWith => _$SourceAlbumCopyWithImpl<SourceAlbum>(this, _$identity);
 
-
+@override
+Map<String, dynamic> toJson() {
+  return _$SourceAlbumToJson(this, );
+}
 
 @override
 bool operator ==(Object other) {
   return identical(this, other) || (other.runtimeType == runtimeType&&other is SourceAlbum&&(identical(other.id, id) || other.id == id)&&(identical(other.artistId, artistId) || other.artistId == artistId)&&(identical(other.name, name) || other.name == name)&&(identical(other.albumArtist, albumArtist) || other.albumArtist == albumArtist)&&(identical(other.created, created) || other.created == created)&&(identical(other.coverArt, coverArt) || other.coverArt == coverArt)&&(identical(other.year, year) || other.year == year)&&(identical(other.starred, starred) || other.starred == starred)&&(identical(other.genre, genre) || other.genre == genre)&&(identical(other.frequentRank, frequentRank) || other.frequentRank == frequentRank)&&(identical(other.recentRank, recentRank) || other.recentRank == recentRank));
 }
 
-
+@JsonKey(includeFromJson: false, includeToJson: false)
 @override
 int get hashCode => Object.hash(runtimeType,id,artistId,name,albumArtist,created,coverArt,year,starred,genre,frequentRank,recentRank);
 
@@ -381,11 +429,11 @@ as int?,
 }
 
 /// @nodoc
-
+@JsonSerializable()
 
 class SourcePlaylist with CoverArt implements SourceItem {
-  const SourcePlaylist({required this.id, required this.name, this.comment, required this.created, required this.changed, this.coverArt, this.owner, this.public});
-  
+  const SourcePlaylist({required this.id, required this.name, this.comment, required this.created, required this.changed, this.coverArt, this.owner, this.public, final  String? $type}): $type = $type ?? 'playlist';
+  factory SourcePlaylist.fromJson(Map<String, dynamic> json) => _$SourcePlaylistFromJson(json);
 
 @override final  String id;
  final  String name;
@@ -396,20 +444,27 @@ class SourcePlaylist with CoverArt implements SourceItem {
  final  String? owner;
  final  bool? public;
 
+@JsonKey(name: 'runtimeType')
+final String $type;
+
+
 /// Create a copy of SourceItem
 /// with the given fields replaced by the non-null parameter values.
 @override @JsonKey(includeFromJson: false, includeToJson: false)
 @pragma('vm:prefer-inline')
 $SourcePlaylistCopyWith<SourcePlaylist> get copyWith => _$SourcePlaylistCopyWithImpl<SourcePlaylist>(this, _$identity);
 
-
+@override
+Map<String, dynamic> toJson() {
+  return _$SourcePlaylistToJson(this, );
+}
 
 @override
 bool operator ==(Object other) {
   return identical(this, other) || (other.runtimeType == runtimeType&&other is SourcePlaylist&&(identical(other.id, id) || other.id == id)&&(identical(other.name, name) || other.name == name)&&(identical(other.comment, comment) || other.comment == comment)&&(identical(other.created, created) || other.created == created)&&(identical(other.changed, changed) || other.changed == changed)&&(identical(other.coverArt, coverArt) || other.coverArt == coverArt)&&(identical(other.owner, owner) || other.owner == owner)&&(identical(other.public, public) || other.public == public));
 }
 
-
+@JsonKey(includeFromJson: false, includeToJson: false)
 @override
 int get hashCode => Object.hash(runtimeType,id,name,comment,created,changed,coverArt,owner,public);
 
@@ -461,11 +516,11 @@ as bool?,
 }
 
 /// @nodoc
-
+@JsonSerializable()
 
 class SourceSong with Starred, CoverArt implements SourceItem {
-  const SourceSong({required this.id, this.albumId, this.artistId, required this.title, this.artist, this.album, this.duration, this.track, this.disc, this.starred, this.genre, this.coverArt});
-  
+  const SourceSong({required this.id, this.albumId, this.artistId, required this.title, this.artist, this.album, this.duration, this.track, this.disc, this.starred, this.genre, this.coverArt, final  String? $type}): $type = $type ?? 'song';
+  factory SourceSong.fromJson(Map<String, dynamic> json) => _$SourceSongFromJson(json);
 
 @override final  String id;
  final  String? albumId;
@@ -480,20 +535,27 @@ class SourceSong with Starred, CoverArt implements SourceItem {
  final  String? genre;
  final  String? coverArt;
 
+@JsonKey(name: 'runtimeType')
+final String $type;
+
+
 /// Create a copy of SourceItem
 /// with the given fields replaced by the non-null parameter values.
 @override @JsonKey(includeFromJson: false, includeToJson: false)
 @pragma('vm:prefer-inline')
 $SourceSongCopyWith<SourceSong> get copyWith => _$SourceSongCopyWithImpl<SourceSong>(this, _$identity);
 
-
+@override
+Map<String, dynamic> toJson() {
+  return _$SourceSongToJson(this, );
+}
 
 @override
 bool operator ==(Object other) {
   return identical(this, other) || (other.runtimeType == runtimeType&&other is SourceSong&&(identical(other.id, id) || other.id == id)&&(identical(other.albumId, albumId) || other.albumId == albumId)&&(identical(other.artistId, artistId) || other.artistId == artistId)&&(identical(other.title, title) || other.title == title)&&(identical(other.artist, artist) || other.artist == artist)&&(identical(other.album, album) || other.album == album)&&(identical(other.duration, duration) || other.duration == duration)&&(identical(other.track, track) || other.track == track)&&(identical(other.disc, disc) || other.disc == disc)&&(identical(other.starred, starred) || other.starred == starred)&&(identical(other.genre, genre) || other.genre == genre)&&(identical(other.coverArt, coverArt) || other.coverArt == coverArt));
 }
 
-
+@JsonKey(includeFromJson: false, includeToJson: false)
 @override
 int get hashCode => Object.hash(runtimeType,id,albumId,artistId,title,artist,album,duration,track,disc,starred,genre,coverArt);
 
@@ -548,6 +610,7 @@ as String?,
 
 }
 
+
 /// @nodoc
 mixin _$SourcePlaylistSong {
 
@@ -558,6 +621,8 @@ mixin _$SourcePlaylistSong {
 @pragma('vm:prefer-inline')
 $SourcePlaylistSongCopyWith<SourcePlaylistSong> get copyWith => _$SourcePlaylistSongCopyWithImpl<SourcePlaylistSong>(this as SourcePlaylistSong, _$identity);
 
+  /// Serializes this SourcePlaylistSong to a JSON map.
+  Map<String, dynamic> toJson();
 
 
 @override
@@ -565,7 +630,7 @@ bool operator ==(Object other) {
   return identical(this, other) || (other.runtimeType == runtimeType&&other is SourcePlaylistSong&&(identical(other.playlistId, playlistId) || other.playlistId == playlistId)&&(identical(other.songId, songId) || other.songId == songId)&&(identical(other.position, position) || other.position == position));
 }
 
-
+@JsonKey(includeFromJson: false, includeToJson: false)
 @override
 int get hashCode => Object.hash(runtimeType,playlistId,songId,position);
 
@@ -742,11 +807,11 @@ return $default(_that.playlistId,_that.songId,_that.position);case _:
 }
 
 /// @nodoc
-
+@JsonSerializable()
 
 class _SourcePlaylistSong implements SourcePlaylistSong {
   const _SourcePlaylistSong({required this.playlistId, required this.songId, required this.position});
-  
+  factory _SourcePlaylistSong.fromJson(Map<String, dynamic> json) => _$SourcePlaylistSongFromJson(json);
 
 @override final  String playlistId;
 @override final  String songId;
@@ -758,14 +823,17 @@ class _SourcePlaylistSong implements SourcePlaylistSong {
 @pragma('vm:prefer-inline')
 _$SourcePlaylistSongCopyWith<_SourcePlaylistSong> get copyWith => __$SourcePlaylistSongCopyWithImpl<_SourcePlaylistSong>(this, _$identity);
 
-
+@override
+Map<String, dynamic> toJson() {
+  return _$SourcePlaylistSongToJson(this, );
+}
 
 @override
 bool operator ==(Object other) {
   return identical(this, other) || (other.runtimeType == runtimeType&&other is _SourcePlaylistSong&&(identical(other.playlistId, playlistId) || other.playlistId == playlistId)&&(identical(other.songId, songId) || other.songId == songId)&&(identical(other.position, position) || other.position == position));
 }
 
-
+@JsonKey(includeFromJson: false, includeToJson: false)
 @override
 int get hashCode => Object.hash(runtimeType,playlistId,songId,position);
 

lib/sources/models.g.dart

@@ -0,0 +1,142 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'models.dart';
+
+// **************************************************************************
+// JsonSerializableGenerator
+// **************************************************************************
+
+SourceArtist _$SourceArtistFromJson(Map<String, dynamic> json) => SourceArtist(
+  id: json['id'] as String,
+  name: json['name'] as String,
+  starred: json['starred'] == null
+      ? null
+      : DateTime.parse(json['starred'] as String),
+  smallImage: json['smallImage'] == null
+      ? null
+      : Uri.parse(json['smallImage'] as String),
+  largeImage: json['largeImage'] == null
+      ? null
+      : Uri.parse(json['largeImage'] as String),
+  $type: json['runtimeType'] as String?,
+);
+
+Map<String, dynamic> _$SourceArtistToJson(SourceArtist instance) =>
+    <String, dynamic>{
+      'id': instance.id,
+      'name': instance.name,
+      'starred': instance.starred?.toIso8601String(),
+      'smallImage': instance.smallImage?.toString(),
+      'largeImage': instance.largeImage?.toString(),
+      'runtimeType': instance.$type,
+    };
+
+SourceAlbum _$SourceAlbumFromJson(Map<String, dynamic> json) => SourceAlbum(
+  id: json['id'] as String,
+  artistId: json['artistId'] as String?,
+  name: json['name'] as String,
+  albumArtist: json['albumArtist'] as String?,
+  created: DateTime.parse(json['created'] as String),
+  coverArt: json['coverArt'] as String?,
+  year: (json['year'] as num?)?.toInt(),
+  starred: json['starred'] == null
+      ? null
+      : DateTime.parse(json['starred'] as String),
+  genre: json['genre'] as String?,
+  frequentRank: (json['frequentRank'] as num?)?.toInt(),
+  recentRank: (json['recentRank'] as num?)?.toInt(),
+  $type: json['runtimeType'] as String?,
+);
+
+Map<String, dynamic> _$SourceAlbumToJson(SourceAlbum instance) =>
+    <String, dynamic>{
+      'id': instance.id,
+      'artistId': instance.artistId,
+      'name': instance.name,
+      'albumArtist': instance.albumArtist,
+      'created': instance.created.toIso8601String(),
+      'coverArt': instance.coverArt,
+      'year': instance.year,
+      'starred': instance.starred?.toIso8601String(),
+      'genre': instance.genre,
+      'frequentRank': instance.frequentRank,
+      'recentRank': instance.recentRank,
+      'runtimeType': instance.$type,
+    };
+
+SourcePlaylist _$SourcePlaylistFromJson(Map<String, dynamic> json) =>
+    SourcePlaylist(
+      id: json['id'] as String,
+      name: json['name'] as String,
+      comment: json['comment'] as String?,
+      created: DateTime.parse(json['created'] as String),
+      changed: DateTime.parse(json['changed'] as String),
+      coverArt: json['coverArt'] as String?,
+      owner: json['owner'] as String?,
+      public: json['public'] as bool?,
+      $type: json['runtimeType'] as String?,
+    );
+
+Map<String, dynamic> _$SourcePlaylistToJson(SourcePlaylist instance) =>
+    <String, dynamic>{
+      'id': instance.id,
+      'name': instance.name,
+      'comment': instance.comment,
+      'created': instance.created.toIso8601String(),
+      'changed': instance.changed.toIso8601String(),
+      'coverArt': instance.coverArt,
+      'owner': instance.owner,
+      'public': instance.public,
+      'runtimeType': instance.$type,
+    };
+
+SourceSong _$SourceSongFromJson(Map<String, dynamic> json) => SourceSong(
+  id: json['id'] as String,
+  albumId: json['albumId'] as String?,
+  artistId: json['artistId'] as String?,
+  title: json['title'] as String,
+  artist: json['artist'] as String?,
+  album: json['album'] as String?,
+  duration: json['duration'] == null
+      ? null
+      : Duration(microseconds: (json['duration'] as num).toInt()),
+  track: (json['track'] as num?)?.toInt(),
+  disc: (json['disc'] as num?)?.toInt(),
+  starred: json['starred'] == null
+      ? null
+      : DateTime.parse(json['starred'] as String),
+  genre: json['genre'] as String?,
+  coverArt: json['coverArt'] as String?,
+  $type: json['runtimeType'] as String?,
+);
+
+Map<String, dynamic> _$SourceSongToJson(SourceSong instance) =>
+    <String, dynamic>{
+      'id': instance.id,
+      'albumId': instance.albumId,
+      'artistId': instance.artistId,
+      'title': instance.title,
+      'artist': instance.artist,
+      'album': instance.album,
+      'duration': instance.duration?.inMicroseconds,
+      'track': instance.track,
+      'disc': instance.disc,
+      'starred': instance.starred?.toIso8601String(),
+      'genre': instance.genre,
+      'coverArt': instance.coverArt,
+      'runtimeType': instance.$type,
+    };
+
+_SourcePlaylistSong _$SourcePlaylistSongFromJson(Map<String, dynamic> json) =>
+    _SourcePlaylistSong(
+      playlistId: json['playlistId'] as String,
+      songId: json['songId'] as String,
+      position: (json['position'] as num).toInt(),
+    );
+
+Map<String, dynamic> _$SourcePlaylistSongToJson(_SourcePlaylistSong instance) =>
+    <String, dynamic>{
+      'playlistId': instance.playlistId,
+      'songId': instance.songId,
+      'position': instance.position,
+    };

mise-tasks/servers-reset.sh

@@ -5,12 +5,12 @@ docker compose build
 docker compose down
 docker volume rm $(docker compose volumes -q) || true
 
-docker compose up -d
-
 docker compose run --rm library-manager music-download.ts
-docker compose run --rm library-manager setup-servers.ts
 
+docker compose up -d
 echo "waiting for library scans..."
 sleep 10
 
+docker compose run --rm library-manager setup-servers.ts
+
 docker compose down

test/sources/subsonic_test.dart

@@ -1,3 +1,4 @@
+import 'package:collection/collection.dart';
 import 'package:http/http.dart';
 import 'package:subtracks/sources/subsonic/client.dart';
 import 'package:subtracks/sources/subsonic/source.dart';
@@ -56,6 +57,33 @@ void main() {
         final items = await source.allAlbums().toList();
 
         expect(items.length, equals(3));
+
+        final kosmo = items.firstWhere((a) => a.name == 'Kosmonaut');
+
+        expect(kosmo.id.length, greaterThan(0));
+        expect(kosmo.artistId?.length, greaterThan(0));
+        expect(kosmo.albumArtist, equals('Ugress'));
+        expect(kosmo.created.compareTo(DateTime.now()), lessThan(0));
+        expect(kosmo.coverArt?.length, greaterThan(0));
+        expect(kosmo.year, equals(2006));
+        expect(kosmo.starred, isNull);
+        expect(kosmo.genre, equals('Electronic'));
+
+        final retro = items.firstWhere(
+          (a) => a.name == 'Retroconnaissance EP',
+        );
+        final dunno = items.firstWhere(
+          (a) => a.name == "I Don't Know What I'm Doing",
+        );
+
+        expect(kosmo.recentRank, equals(0));
+        expect(kosmo.frequentRank, equals(1));
+
+        expect(retro.recentRank, equals(1));
+        expect(retro.frequentRank, equals(0));
+
+        expect(dunno.recentRank, isNull);
+        expect(dunno.frequentRank, isNull);
       });
 
       test('allArtists', () async {
@@ -81,6 +109,39 @@ void main() {
 
         expect(items.length, equals(0));
       });
+
+      test('album-artist relation', () async {
+        final artists = await source.allArtists().toList();
+        final albums = await source.allAlbums().toList();
+
+        final artistAlbums = artists
+            .map(
+              (artist) => [
+                artist.name,
+                ...albums
+                    .where((album) => album.artistId == artist.id)
+                    .map((album) => album.name)
+                    .sorted(),
+              ],
+            )
+            .sorted((a, b) => (a[0]).compareTo(b[0]));
+
+        expect(artistAlbums.length, equals(2));
+        expect(
+          artistAlbums,
+          equals([
+            [
+              'Brad Sucks',
+              "I Don't Know What I'm Doing",
+            ],
+            [
+              'Ugress',
+              'Kosmonaut',
+              'Retroconnaissance EP',
+            ],
+          ]),
+        );
+      });
     });
   }
 }