ReelShort/test/drama_detail/drama_detail_logic_test.dart

import 'package:flutter_test/flutter_test.dart';
import 'package:fruitshorts/core/data/models/drama.dart';
import 'package:fruitshorts/core/data/remote/api_client.dart';
import 'package:fruitshorts/core/data/repositories/favorite_repository.dart';
import 'package:fruitshorts/core/data/repositories/playback_repository.dart';
import 'package:fruitshorts/core/data/services/favorite_controller.dart';
import 'package:fruitshorts/pages/drama_detail/drama_detail_logic.dart';

import '../support/fake_watch_history.dart';

/// 详情页逻辑依赖：票据仓库 + 收藏控制器（测试里都是内存实现）。
DramaDetailLogic _logic(
  Drama drama,
  FakeWatchHistory history, {
  FavoriteController? favorites,
}) =>
    DramaDetailLogic(
      drama: drama,
      history: history,
      playback: FakePlaybackRepository(),
      favorites: favorites ?? FavoriteController(InMemoryFavoriteRepository()),
    );

Drama _card(String id) => Drama(
  id: id,
  title: id,
  synopsis: 'synopsis',
  posterUrl: '/files/$id.jpg',
  totalEpisodes: 3,
  episodes: [
    Episode(
      id: '$id-1',
      number: 1,
      title: '第 1 集',
      isFree: true,
      videoUrl: '/files/$id-1.mp4',
    ),
  ],
);

Drama _detail(String id) => Drama(
  id: id,
  title: id,
  synopsis: 'synopsis',
  posterUrl: '/files/$id.jpg',
  totalEpisodes: 3,
  detailLoaded: true,
  episodes: [
    for (var number = 1; number <= 3; number++)
      Episode(
        id: '$id-$number',
        number: number,
        title: '第 $number 集',
        isFree: true,
        videoUrl: '/files/$id-$number.mp4',
      ),
  ],
);

void main() {
  test('should_upgrade_to_full_episode_list_when_detail_loads_for_list_card', () async {
    var calls = 0;
    final logic = _logic(_card('signal'), FakeWatchHistory());

    await logic.load(() async {
      calls++;
      return _detail('signal');
    });

    expect(calls, 1);
    expect(logic.loading, isFalse);
    expect(logic.failed, isFalse);
    expect(logic.drama.episodes, hasLength(3));
    logic.dispose();
  });

  test('should_keep_card_and_report_reason_when_load_fails', () async {
    final logic = _logic(_card('signal'), FakeWatchHistory());

    await logic.load(() async => throw const ApiException(500, '服务异常'));

    expect(logic.failed, isTrue);
    expect(logic.failureMessage, '服务异常');
    expect(logic.drama.episodes, hasLength(1));

    await logic.load(() async => throw StateError('offline'));
    expect(logic.failed, isTrue);
    expect(logic.failureMessage, isNull);
    logic.dispose();
  });

  test('should_skip_request_when_detail_is_already_loaded', () async {
    var calls = 0;
    final logic = _logic(_detail('signal'), FakeWatchHistory());

    await logic.load(() async {
      calls++;
      return _detail('signal');
    });

    expect(calls, 0);
    expect(logic.drama.episodes, hasLength(3));
    logic.dispose();
  });

  test('should_adjust_favorite_count_only_after_successful_changes', () async {
    final repository = InMemoryFavoriteRepository(cards: [_favoriteDrama]);
    final favorites = FavoriteController(repository);
    await favorites.load();
    final logic = _logic(
      _favoriteDrama,
      FakeWatchHistory(),
      favorites: favorites,
    );

    expect(logic.adjustedFavoriteCount, 2);
    expect(await logic.toggleFavorite(), isTrue);
    expect(logic.adjustedFavoriteCount, 3);

    repository.failToggle = true;
    expect(await logic.toggleFavorite(), isFalse);
    expect(logic.adjustedFavoriteCount, 3);

    repository.failToggle = false;
    expect(await logic.toggleFavorite(), isTrue);
    expect(logic.adjustedFavoriteCount, 2);
    logic.dispose();
  });

  test('should_decrement_favorite_count_from_saved_state', () async {
    final repository = InMemoryFavoriteRepository(
      saved: {'favorite-detail'},
      cards: [_favoriteDrama],
    );
    final favorites = FavoriteController(repository);
    await favorites.load();
    final logic = _logic(
      _favoriteDrama,
      FakeWatchHistory(),
      favorites: favorites,
    );

    expect(await logic.toggleFavorite(), isTrue);
    expect(logic.adjustedFavoriteCount, 1);
    logic.dispose();
  });
}

const _favoriteDrama = Drama(
  id: 'favorite-detail',
  title: 'Favorite detail',
  synopsis: 'favorite count',
  posterUrl: '/files/favorite-detail.jpg',
  favoriteCount: 2,
  detailLoaded: true,
);