Cupertino localization step 9: add tests (#29954)

packages/flutter_localizations/lib/flutter_localizations.dart

@@ -5,6 +5,8 @@
 /// Localizations for the Flutter library
 library flutter_localizations;
 
+export 'src/cupertino_localizations.dart';
+export 'src/l10n/generated_cupertino_localizations.dart';
 export 'src/l10n/generated_material_localizations.dart';
 export 'src/material_localizations.dart';
 export 'src/widgets_localizations.dart';

packages/flutter_localizations/test/cupertino/translations_test.dart

+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import 'package:flutter/cupertino.dart';
+import 'package:flutter_localizations/flutter_localizations.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+void main() {
+  for (String language in kCupertinoSupportedLanguages) {
+    testWidgets('translations exist for $language', (WidgetTester tester) async {
+      final Locale locale = Locale(language);
+
+      expect(GlobalCupertinoLocalizations.delegate.isSupported(locale), isTrue);
+
+      final CupertinoLocalizations localizations = await GlobalCupertinoLocalizations.delegate.load(locale);
+
+      expect(localizations.datePickerYear(0), isNotNull);
+      expect(localizations.datePickerYear(1), isNotNull);
+      expect(localizations.datePickerYear(2), isNotNull);
+      expect(localizations.datePickerYear(10), isNotNull);
+
+      expect(localizations.datePickerMonth(1), isNotNull);
+      expect(localizations.datePickerMonth(2), isNotNull);
+      expect(localizations.datePickerMonth(11), isNotNull);
+      expect(localizations.datePickerMonth(12), isNotNull);
+
+      expect(localizations.datePickerDayOfMonth(0), isNotNull);
+      expect(localizations.datePickerDayOfMonth(1), isNotNull);
+      expect(localizations.datePickerDayOfMonth(2), isNotNull);
+      expect(localizations.datePickerDayOfMonth(10), isNotNull);
+
+      expect(localizations.datePickerMediumDate(DateTime(2019, 3, 25)), isNotNull);
+
+      expect(localizations.datePickerHour(0), isNotNull);
+      expect(localizations.datePickerHour(1), isNotNull);
+      expect(localizations.datePickerHour(2), isNotNull);
+      expect(localizations.datePickerHour(10), isNotNull);
+
+      expect(localizations.datePickerHourSemanticsLabel(0), isNotNull);
+      expect(localizations.datePickerHourSemanticsLabel(1), isNotNull);
+      expect(localizations.datePickerHourSemanticsLabel(2), isNotNull);
+      expect(localizations.datePickerHourSemanticsLabel(10), isNotNull);
+      expect(localizations.datePickerHourSemanticsLabel(0), isNot(contains(r'$hour')));
+      expect(localizations.datePickerHourSemanticsLabel(1), isNot(contains(r'$hour')));
+      expect(localizations.datePickerHourSemanticsLabel(2), isNot(contains(r'$hour')));
+      expect(localizations.datePickerHourSemanticsLabel(10), isNot(contains(r'$hour')));
+
+      expect(localizations.datePickerDateOrder, isNotNull);
+      expect(localizations.datePickerDateTimeOrder, isNotNull);
+      expect(localizations.anteMeridiemAbbreviation, isNotNull);
+      expect(localizations.postMeridiemAbbreviation, isNotNull);
+      expect(localizations.alertDialogLabel, isNotNull);
+
+      expect(localizations.timerPickerHour(0), isNotNull);
+      expect(localizations.timerPickerHour(1), isNotNull);
+      expect(localizations.timerPickerHour(2), isNotNull);
+      expect(localizations.timerPickerHour(10), isNotNull);
+
+      expect(localizations.timerPickerMinute(0), isNotNull);
+      expect(localizations.timerPickerMinute(1), isNotNull);
+      expect(localizations.timerPickerMinute(2), isNotNull);
+      expect(localizations.timerPickerMinute(10), isNotNull);
+
+      expect(localizations.timerPickerSecond(0), isNotNull);
+      expect(localizations.timerPickerSecond(1), isNotNull);
+      expect(localizations.timerPickerSecond(2), isNotNull);
+      expect(localizations.timerPickerSecond(10), isNotNull);
+
+      expect(localizations.timerPickerHourLabel(0), isNotNull);
+      expect(localizations.timerPickerHourLabel(1), isNotNull);
+      expect(localizations.timerPickerHourLabel(2), isNotNull);
+      expect(localizations.timerPickerHourLabel(10), isNotNull);
+
+      expect(localizations.timerPickerMinuteLabel(0), isNotNull);
+      expect(localizations.timerPickerMinuteLabel(1), isNotNull);
+      expect(localizations.timerPickerMinuteLabel(2), isNotNull);
+      expect(localizations.timerPickerMinuteLabel(10), isNotNull);
+
+      expect(localizations.timerPickerSecondLabel(0), isNotNull);
+      expect(localizations.timerPickerSecondLabel(1), isNotNull);
+      expect(localizations.timerPickerSecondLabel(2), isNotNull);
+      expect(localizations.timerPickerSecondLabel(10), isNotNull);
+
+      expect(localizations.cutButtonLabel, isNotNull);
+      expect(localizations.copyButtonLabel, isNotNull);
+      expect(localizations.pasteButtonLabel, isNotNull);
+      expect(localizations.selectAllButtonLabel, isNotNull);
+    });
+  }
+
+  testWidgets('Spot check French', (WidgetTester tester) async {
+    const Locale locale = Locale.fromSubtags(languageCode: 'fr', scriptCode: null, countryCode: null);
+    expect(GlobalCupertinoLocalizations.delegate.isSupported(locale), isTrue);
+    final CupertinoLocalizations localizations = await GlobalCupertinoLocalizations.delegate.load(locale);
+    expect(localizations is CupertinoLocalizationFr, true);
+    expect(localizations.alertDialogLabel, 'Alerte');
+    expect(localizations.datePickerHourSemanticsLabel(1), 'une heure');
+    expect(localizations.pasteButtonLabel, 'Coller');
+    expect(localizations.datePickerDateOrder, DatePickerDateOrder.dmy);
+    expect(localizations.timerPickerSecondLabel(20), 's');
+    expect(localizations.selectAllButtonLabel, 'Tout sélect.');
+    expect(localizations.timerPickerMinute(10), '10');
+  });
+}