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https://github.com/flutter/flutter
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c9b94e1412
* enable lint prefer_const_constructors_in_immutables * remove LabeledGlobalKey._
83 lines
2.8 KiB
Dart
83 lines
2.8 KiB
Dart
// Copyright 2016 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'package:flutter/material.dart';
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import 'package:flutter_localizations/flutter_localizations.dart';
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import 'package:flutter_test/flutter_test.dart';
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void main() {
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testWidgets('Nested Localizations', (WidgetTester tester) async {
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await tester.pumpWidget(new MaterialApp( // Creates the outer Localizations widget.
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home: new ListView(
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children: <Widget>[
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const LocalizationTracker(key: const ValueKey<String>('outer')),
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new Localizations(
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locale: const Locale('zh', 'CN'),
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delegates: GlobalMaterialLocalizations.delegates,
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child: const LocalizationTracker(key: const ValueKey<String>('inner')),
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),
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],
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),
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));
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final LocalizationTrackerState outerTracker = tester.state(find.byKey(const ValueKey<String>('outer')));
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expect(outerTracker.captionFontSize, 12.0);
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final LocalizationTrackerState innerTracker = tester.state(find.byKey(const ValueKey<String>('inner')));
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expect(innerTracker.captionFontSize, 13.0);
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});
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testWidgets('Localizations is compatible with ChangeNotifier.dispose() called during didChangeDependencies', (WidgetTester tester) async {
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// PageView calls ScrollPosition.dispose() during didChangeDependencies.
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await tester.pumpWidget(
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new MaterialApp(
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supportedLocales: const <Locale>[
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const Locale('en', 'US'),
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const Locale('es', 'ES'),
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],
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localizationsDelegates: <LocalizationsDelegate<dynamic>>[
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new _DummyLocalizationsDelegate(),
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GlobalMaterialLocalizations.delegate,
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],
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home: new PageView(),
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)
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);
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await tester.binding.setLocale('es', 'US');
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await tester.pump();
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await tester.pumpWidget(new Container());
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});
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}
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/// A localizations delegate that does not contain any useful data, and is only
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/// used to trigger didChangeDependencies upon locale change.
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class _DummyLocalizationsDelegate extends LocalizationsDelegate<DummyLocalizations> {
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@override
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Future<DummyLocalizations> load(Locale locale) async => new DummyLocalizations();
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@override
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bool isSupported(Locale locale) => true;
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@override
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bool shouldReload(_DummyLocalizationsDelegate old) => true;
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}
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class DummyLocalizations {}
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class LocalizationTracker extends StatefulWidget {
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const LocalizationTracker({Key key}) : super(key: key);
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@override
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State<StatefulWidget> createState() => new LocalizationTrackerState();
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}
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class LocalizationTrackerState extends State<LocalizationTracker> {
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double captionFontSize;
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@override
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Widget build(BuildContext context) {
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captionFontSize = Theme.of(context).textTheme.caption.fontSize;
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return new Container();
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}
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}
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