Add unit test album list screen

Author: up2code

test/src/features/albums/presentation/albums_list/albums_list_filter_screen_test.dart

@@ -0,0 +1,31 @@
+import 'package:flutter_test/flutter_test.dart';
+
+import 'albums_list_filter_screen_robot.dart';
+
+void main() {
+  group('albums filter screen', () {
+    testWidgets('change album type', (tester) async {
+      String? selectedValue;
+      final r = AlbumsListFilterScreenRobot(tester);
+
+      await r.pumpAlbumsListFilterScreen(
+        onAlbumsTypesChanged: (value) => selectedValue = value,
+      );
+
+      await r.selectAlbumTypes('E.P.');
+      expect(selectedValue, 'EP');
+    });
+
+    testWidgets('change album sort', (tester) async {
+      String? selectedValue;
+      final r = AlbumsListFilterScreenRobot(tester);
+
+      await r.pumpAlbumsListFilterScreen(
+        onAlbumsTypesChanged: (value) => selectedValue = value,
+      );
+
+      await r.selectSort('Addition date');
+      expect(selectedValue, 'AdditionDate');
+    });
+  });
+}

test/src/features/albums/presentation/albums_list/albums_list_screen_robot.dart

@@ -0,0 +1,39 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:vocadb_app/src/features/albums/data/album_repository.dart';
+import 'package:vocadb_app/src/features/albums/presentation/album_tile/album_tile.dart';
+import 'package:vocadb_app/src/features/albums/presentation/albums_list/albums_list_screen.dart';
+import 'package:vocadb_app/src/features/settings/data/user_settings_repository.dart';
+
+class AlbumsListScreenRobot {
+  final WidgetTester tester;
+
+  AlbumsListScreenRobot(this.tester);
+
+  Future<void> pumpAlbumsListScreen(
+      {AlbumRepository? albumRepository}) async {
+    await tester.pumpWidget(
+      ProviderScope(
+        overrides: [
+          if (albumRepository != null)
+            albumRepositoryProvider.overrideWithValue(albumRepository),
+          userSettingsRepositoryProvider
+              .overrideWithValue(UserSettingsRepository())
+        ],
+        child: const MaterialApp(
+          home: AlbumsListScreen(),
+        ),
+      ),
+    );
+
+    await tester.pump();
+    await tester.pump();
+    await tester.pump();
+  }
+
+  Future<void> expectAlbumsDisplayCountAtLeast(int count) async {
+    final finder = find.byType(AlbumTile);
+    expect(finder, findsAtLeastNWidgets(count));
+  }
+}

test/src/features/albums/presentation/albums_list/albums_list_screen_test.dart

@@ -1,31 +1,32 @@
 import 'package:flutter_test/flutter_test.dart';
+import 'package:mocktail/mocktail.dart';
+import 'package:vocadb_app/src/features/albums/data/constants/fake_albums_list.dart';
+import 'package:vocadb_app/src/features/albums/domain/albums_list_params.dart';
 
-import 'albums_list_filter_screen_robot.dart';
+import '../../../../mocks.dart';
+import 'albums_list_screen_robot.dart';
 
 void main() {
-  group('albums filter screen', () {
-    testWidgets('change album type', (tester) async {
-      String? selectedValue;
-      final r = AlbumsListFilterScreenRobot(tester);
+  testWidgets('albums list screen ...', (tester) async {
+    registerFallbackValue(FakeAlbumsListParams());
 
-      await r.pumpAlbumsListFilterScreen(
-        onAlbumsTypesChanged: (value) => selectedValue = value,
-      );
+    final r = AlbumsListScreenRobot(tester);
+    final albumRepository = MockAlbumRepository();
 
-      await r.selectAlbumTypes('E.P.');
-      expect(selectedValue, 'EP');
-    });
+    when(() => albumRepository.fetchAlbums(
+          params: any(named: 'params', that: isNotNull),
+        )).thenAnswer((_) => Future.value(kFakeAlbumsList));
 
-    testWidgets('change album sort', (tester) async {
-      String? selectedValue;
-      final r = AlbumsListFilterScreenRobot(tester);
+    await r.pumpAlbumsListScreen(albumRepository: albumRepository);
 
-      await r.pumpAlbumsListFilterScreen(
-        onAlbumsTypesChanged: (value) => selectedValue = value,
-      );
+    await r.expectAlbumsDisplayCountAtLeast(3);
 
-      await r.selectSort('Addition date');
-      expect(selectedValue, 'AdditionDate');
-    });
+    expect(
+        verify(() =>
+                albumRepository.fetchAlbums(params: captureAny(named: 'params')))
+            .captured,
+        [
+          const AlbumsListParams(),
+        ]);
   });
 }

test/src/mocks.dart

@@ -2,6 +2,7 @@ import 'package:hive/hive.dart';
 import 'package:http/http.dart';
 import 'package:mocktail/mocktail.dart';
 import 'package:vocadb_app/src/features/albums/data/album_repository.dart';
+import 'package:vocadb_app/src/features/albums/domain/albums_list_params.dart';
 import 'package:vocadb_app/src/features/api/api_cache.dart';
 import 'package:vocadb_app/src/features/api/api_client.dart';
 import 'package:vocadb_app/src/features/api/data/cookie_storage.dart';
@@ -37,6 +38,8 @@ class RatedSongsListParamsFake extends Fake implements RatedSongsListParams {}
 
 class FakeArtistsListParams extends Fake implements ArtistsListParams {}
 
+class FakeAlbumsListParams extends Fake implements AlbumsListParams {}
+
 class FakeSongsListParams extends Fake implements SongsListParams {}
 
 class MockUserSettingsRepository extends Mock