music source and client for subsonic

test fixture setup for navidrome

test/sources/subsonic_test.dart

@@ -0,0 +1,66 @@
+import 'package:collection/collection.dart';
+import 'package:http/http.dart';
+import 'package:subtracks/sources/subsonic/client.dart';
+import 'package:subtracks/sources/subsonic/source.dart';
+import 'package:test/test.dart';
+
+class TestHttpClient extends BaseClient {
+  @override
+  Future<StreamedResponse> send(BaseRequest request) => request.send();
+}
+
+class Server {
+  Server({
+    required this.name,
+    required this.client,
+  });
+
+  final String name;
+  final SubsonicClient client;
+}
+
+void main() {
+  late SubsonicSource source;
+
+  final clients = [
+    Server(
+      name: 'navidrome',
+      client: SubsonicClient(
+        http: TestHttpClient(),
+        address: Uri.parse('http://localhost:4533/'),
+        username: 'admin',
+        password: 'password',
+      ),
+    ),
+  ];
+
+  for (final Server(:name, :client) in clients) {
+    group(name, () {
+      setUp(() async {
+        source = SubsonicSource(client: client, maxBitrate: 196);
+      });
+
+      test('ping', () async {
+        await source.ping();
+      });
+
+      test('allAlbums', () async {
+        final items = (await source.allAlbums().toList()).flattened.toList();
+
+        expect(items.length, equals(3));
+      });
+
+      test('allArtists', () async {
+        final items = (await source.allArtists().toList()).flattened.toList();
+
+        expect(items.length, equals(2));
+      });
+
+      test('allSongs', () async {
+        final items = (await source.allSongs().toList()).flattened.toList();
+
+        expect(items.length, equals(20));
+      });
+    });
+  }
+}