feat(library): 收藏卡片展示简介

test/library/favorites_page_test.dart

@@ -32,10 +32,10 @@ import '../support/fake_interaction_repositories.dart';
 import '../support/fake_notice_repository.dart';
 import '../support/widget_player.dart';
 
-Drama _card(String id) => Drama(
+Drama _card(String id, {String synopsis = 'synopsis'}) => Drama(
   id: id,
   title: 'Drama $id',
-  synopsis: 'synopsis',
+  synopsis: synopsis,
   posterUrl: '/files/$id.png',
   totalEpisodes: 12,
 );
@@ -73,6 +73,14 @@ void main() {
     );
     expect(title.style?.color, AppColors.onSurface);
     expect(title.style?.fontSize, 15);
+    final synopsis = tester.widget<Text>(
+      find.byKey(const Key('favorite-synopsis-signal')),
+    );
+    expect(synopsis.data, 'synopsis');
+    expect(synopsis.maxLines, 2);
+    expect(synopsis.overflow, TextOverflow.ellipsis);
+    expect(synopsis.style?.color, AppColors.muted);
+    expect(synopsis.style?.fontSize, 12);
     expect(
       tester.getSize(find.byKey(const Key('favorite-cover-signal'))),
       const Size(80, 106),
@@ -100,6 +108,38 @@ void main() {
     expect(find.byKey(const Key('favorite-card-signal')), findsNothing);
   });
 
+  testWidgets('should_hide_blank_synopsis_without_changing_card_height', (
+    tester,
+  ) async {
+    final auth = await _auth(signedIn: true);
+    final longSynopsis = List.filled(12, '很长的剧情简介').join();
+    final favorites = FavoriteController(
+      InMemoryFavoriteRepository(
+        saved: {'with-synopsis', 'without-synopsis'},
+        cards: [
+          _card('with-synopsis', synopsis: longSynopsis),
+          _card('without-synopsis', synopsis: '   '),
+        ],
+      ),
+    );
+
+    await _pumpPage(tester, auth: auth, favorites: favorites);
+
+    final withSynopsis = tester.widget<Text>(
+      find.byKey(const Key('favorite-synopsis-with-synopsis')),
+    );
+    expect(withSynopsis.maxLines, 2);
+    expect(withSynopsis.overflow, TextOverflow.ellipsis);
+    expect(
+      find.byKey(const Key('favorite-synopsis-without-synopsis')),
+      findsNothing,
+    );
+    expect(
+      tester.getSize(find.byKey(const Key('favorite-card-with-synopsis'))),
+      tester.getSize(find.byKey(const Key('favorite-card-without-synopsis'))),
+    );
+  });
+
   testWidgets('should_keep_card_and_show_failure_when_remove_fails', (
     tester,
   ) async {