124 lines
3.8 KiB
Dart
124 lines
3.8 KiB
Dart
import 'package:flutter/widgets.dart';
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import 'package:flutter_test/flutter_test.dart';
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import 'package:fruitshorts/core/config/locale_controller.dart';
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import 'package:shared_preferences/shared_preferences.dart';
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import 'package:shared_preferences_platform_interface/in_memory_shared_preferences_async.dart';
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import 'package:shared_preferences_platform_interface/shared_preferences_async_platform_interface.dart';
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import 'package:shared_preferences_platform_interface/types.dart';
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void main() {
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setUp(() {
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SharedPreferencesAsyncPlatform.instance =
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InMemorySharedPreferencesAsync.empty();
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});
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test('should_keep_device_locale_when_no_choice_is_stored', () async {
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final controller = LocaleController();
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var notifications = 0;
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controller.addListener(() => notifications++);
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await controller.load();
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expect(controller.locale, isNull);
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expect(notifications, 1);
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});
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test('should_restore_chosen_language_when_app_restarts', () async {
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final first = LocaleController();
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await first.select('zh');
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expect(first.locale, const Locale('zh'));
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final reopened = LocaleController();
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await reopened.load();
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expect(reopened.locale, const Locale('zh'));
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});
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test('should_restore_indonesian_when_selected_and_app_restarts', () async {
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final first = LocaleController();
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await first.select('id');
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expect(first.locale, const Locale('id'));
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final reopened = LocaleController();
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await reopened.load();
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expect(reopened.locale, const Locale('id'));
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});
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test('should_fallback_to_indonesian_when_system_language_is_unsupported', () {
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expect(resolveAppLocale(null, const Locale('en')), const Locale('en'));
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expect(resolveAppLocale(null, const Locale('id')), const Locale('id'));
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expect(resolveAppLocale(null, const Locale('fr')), const Locale('id'));
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expect(resolveAppLocale(null, const Locale('in')), const Locale('id'));
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expect(
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resolveAppLocale(const Locale('zh'), const Locale('fr')),
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const Locale('zh'),
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);
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});
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test(
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'should_clear_stored_chinese_preference_when_english_is_selected',
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() async {
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await LocaleController().select('zh');
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final reopened = LocaleController();
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await reopened.load();
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await reopened.select('en');
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final third = LocaleController();
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await third.load();
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expect(third.locale, const Locale('en'));
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},
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);
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test('should_clear_locale_when_code_is_unsupported', () async {
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final controller = LocaleController();
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await controller.select('zh');
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expect(controller.locale, const Locale('zh'));
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await controller.select('tlh');
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expect(controller.locale, isNull);
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});
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test(
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'should_resolve_to_device_locale_when_stored_code_is_unsupported',
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() async {
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await SharedPreferencesAsync().setString('ui.locale', 'fr');
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final controller = LocaleController();
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await controller.load();
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expect(controller.locale, isNull);
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},
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);
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test(
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'should_survive_load_and_select_when_preference_store_is_broken',
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() async {
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SharedPreferencesAsyncPlatform.instance = _BrokenPreferences();
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final controller = LocaleController();
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await controller.load();
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expect(controller.locale, isNull);
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await controller.select('zh');
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expect(controller.locale, const Locale('zh'));
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},
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);
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}
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/// Stands in for a platform whose preference store is unavailable.
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base class _BrokenPreferences extends InMemorySharedPreferencesAsync {
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_BrokenPreferences() : super.empty();
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@override
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Future<String?> getString(String key, SharedPreferencesOptions options) =>
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Future<String?>.error(StateError('preferences unavailable'));
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@override
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Future<bool> setString(
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String key,
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String value,
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SharedPreferencesOptions options,
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) => Future<bool>.error(StateError('preferences unavailable'));
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}
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