flutter/packages/flutter_localizations/test/material/date_picker_test.dart
Sangam Shrestha d261411b4c
Remove redundant useMaterial3: true (#163376)
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This PR removes redundant useMaterial3: true as described in
https://github.com/flutter/flutter/issues/162818

*List which issues are fixed by this PR. You must list at least one
issue. An issue is not required if the PR fixes something trivial like a
typo.*

- https://github.com/flutter/flutter/issues/162818

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---------

Co-authored-by: Qun Cheng <36861262+QuncCccccc@users.noreply.github.com>
2025-03-14 17:50:20 +00:00

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// Copyright 2014 The Flutter 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/material.dart';
import 'package:flutter_localizations/flutter_localizations.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:intl/intl.dart' as intl;
void main() {
late DateTime firstDate;
late DateTime lastDate;
late DateTime initialDate;
setUp(() {
firstDate = DateTime(2001);
lastDate = DateTime(2031, DateTime.december, 31);
initialDate = DateTime(2016, DateTime.january, 15);
});
group(CalendarDatePicker, () {
final intl.NumberFormat arabicNumbers = intl.NumberFormat('0', 'ar');
final Map<Locale, Map<String, dynamic>> testLocales = <Locale, Map<String, dynamic>>{
// Tests the default.
const Locale('en', 'US'): <String, dynamic>{
'textDirection': TextDirection.ltr,
'expectedDaysOfWeek': <String>['S', 'M', 'T', 'W', 'T', 'F', 'S'],
'expectedDaysOfMonth': List<String>.generate(30, (int i) => '${i + 1}'),
'expectedMonthYearHeader': 'September 2017',
},
// Tests a different first day of week.
const Locale('ru', 'RU'): <String, dynamic>{
'textDirection': TextDirection.ltr,
'expectedDaysOfWeek': <String>['В', 'П', 'В', 'С', 'Ч', 'П', 'С'],
'expectedDaysOfMonth': List<String>.generate(30, (int i) => '${i + 1}'),
'expectedMonthYearHeader': 'сентябрь 2017 г.',
},
const Locale('ro', 'RO'): <String, dynamic>{
'textDirection': TextDirection.ltr,
'expectedDaysOfWeek': <String>['D', 'L', 'M', 'M', 'J', 'V', 'S'],
'expectedDaysOfMonth': List<String>.generate(30, (int i) => '${i + 1}'),
'expectedMonthYearHeader': 'septembrie 2017',
},
// Tests RTL.
const Locale('ar', 'AR'): <String, dynamic>{
'textDirection': TextDirection.rtl,
'expectedDaysOfWeek': <String>['ح', 'ن', 'ث', 'ر', 'خ', 'ج', 'س'],
'expectedDaysOfMonth': List<String>.generate(30, (int i) => arabicNumbers.format(i + 1)),
'expectedMonthYearHeader': 'سبتمبر ٢٠١٧',
},
};
for (final Locale locale in testLocales.keys) {
testWidgets('shows dates for $locale', (WidgetTester tester) async {
final List<String> expectedDaysOfWeek =
testLocales[locale]!['expectedDaysOfWeek'] as List<String>;
final List<String> expectedDaysOfMonth =
testLocales[locale]!['expectedDaysOfMonth'] as List<String>;
final String expectedMonthYearHeader =
testLocales[locale]!['expectedMonthYearHeader'] as String;
final TextDirection textDirection = testLocales[locale]!['textDirection'] as TextDirection;
final DateTime baseDate = DateTime(2017, 9, 27);
await _pumpBoilerplate(
tester,
CalendarDatePicker(
initialDate: baseDate,
firstDate: baseDate.subtract(const Duration(days: 90)),
lastDate: baseDate.add(const Duration(days: 90)),
onDateChanged: (DateTime newValue) {},
),
locale: locale,
textDirection: textDirection,
);
expect(find.text(expectedMonthYearHeader), findsOneWidget);
for (final String dayOfWeek in expectedDaysOfWeek) {
expect(find.text(dayOfWeek), findsWidgets);
}
Offset? previousCellOffset;
for (final String dayOfMonth in expectedDaysOfMonth) {
final Finder dayCell = find.descendant(
of: find.byType(GridView),
matching: find.text(dayOfMonth),
);
expect(dayCell, findsOneWidget);
// Check that cells are correctly positioned relative to each other,
// taking text direction into account.
final Offset offset = tester.getCenter(dayCell);
if (previousCellOffset != null) {
if (textDirection == TextDirection.ltr) {
expect(
offset.dx > previousCellOffset.dx && offset.dy == previousCellOffset.dy ||
offset.dy > previousCellOffset.dy,
true,
);
} else {
expect(
offset.dx < previousCellOffset.dx && offset.dy == previousCellOffset.dy ||
offset.dy > previousCellOffset.dy,
true,
);
}
}
previousCellOffset = offset;
}
});
}
});
testWidgets('Material2 - locale parameter overrides ambient locale', (WidgetTester tester) async {
Widget buildFrame() {
return MaterialApp(
theme: ThemeData(useMaterial3: false),
locale: const Locale('en', 'US'),
supportedLocales: const <Locale>[Locale('en', 'US'), Locale('fr', 'CA')],
localizationsDelegates: GlobalMaterialLocalizations.delegates,
home: Material(
child: Builder(
builder: (BuildContext context) {
return TextButton(
onPressed: () async {
await showDatePicker(
context: context,
initialDate: initialDate,
firstDate: firstDate,
lastDate: lastDate,
locale: const Locale('fr', 'CA'),
);
},
child: const Text('X'),
);
},
),
),
);
}
Element getPicker() => tester.element(find.byType(CalendarDatePicker));
await tester.pumpWidget(buildFrame());
await tester.tap(find.text('X'));
await tester.pumpAndSettle();
expect(Localizations.localeOf(getPicker()), const Locale('fr', 'CA'));
expect(Directionality.of(getPicker()), TextDirection.ltr);
await tester.tap(find.text('ANNULER'));
});
testWidgets('Material3 - locale parameter overrides ambient locale', (WidgetTester tester) async {
Widget buildFrame() {
return MaterialApp(
locale: const Locale('en', 'US'),
supportedLocales: const <Locale>[Locale('en', 'US'), Locale('fr', 'CA')],
localizationsDelegates: GlobalMaterialLocalizations.delegates,
home: Material(
child: Builder(
builder: (BuildContext context) {
return TextButton(
onPressed: () async {
await showDatePicker(
context: context,
initialDate: initialDate,
firstDate: firstDate,
lastDate: lastDate,
locale: const Locale('fr', 'CA'),
);
},
child: const Text('X'),
);
},
),
),
);
}
Element getPicker() => tester.element(find.byType(CalendarDatePicker));
await tester.pumpWidget(buildFrame());
await tester.tap(find.text('X'));
await tester.pumpAndSettle();
expect(Localizations.localeOf(getPicker()), const Locale('fr', 'CA'));
expect(Directionality.of(getPicker()), TextDirection.ltr);
await tester.tap(find.text('Annuler'));
});
testWidgets('Material2 - textDirection parameter overrides ambient textDirection', (
WidgetTester tester,
) async {
Widget buildFrame() {
return MaterialApp(
theme: ThemeData(useMaterial3: false),
locale: const Locale('en', 'US'),
home: Material(
child: Builder(
builder: (BuildContext context) {
return TextButton(
onPressed: () async {
await showDatePicker(
context: context,
initialDate: initialDate,
firstDate: firstDate,
lastDate: lastDate,
textDirection: TextDirection.rtl,
);
},
child: const Text('X'),
);
},
),
),
);
}
Element getPicker() => tester.element(find.byType(CalendarDatePicker));
await tester.pumpWidget(buildFrame());
await tester.tap(find.text('X'));
await tester.pumpAndSettle();
expect(Directionality.of(getPicker()), TextDirection.rtl);
await tester.tap(find.text('CANCEL'));
});
testWidgets('Material3 - textDirection parameter overrides ambient textDirection', (
WidgetTester tester,
) async {
Widget buildFrame() {
return MaterialApp(
locale: const Locale('en', 'US'),
home: Material(
child: Builder(
builder: (BuildContext context) {
return TextButton(
onPressed: () async {
await showDatePicker(
context: context,
initialDate: initialDate,
firstDate: firstDate,
lastDate: lastDate,
textDirection: TextDirection.rtl,
);
},
child: const Text('X'),
);
},
),
),
);
}
Element getPicker() => tester.element(find.byType(CalendarDatePicker));
await tester.pumpWidget(buildFrame());
await tester.tap(find.text('X'));
await tester.pumpAndSettle();
expect(Directionality.of(getPicker()), TextDirection.rtl);
await tester.tap(find.text('Cancel'));
});
testWidgets('Material2 - textDirection parameter takes precedence over locale parameter', (
WidgetTester tester,
) async {
Widget buildFrame() {
return MaterialApp(
theme: ThemeData(useMaterial3: false),
locale: const Locale('en', 'US'),
supportedLocales: const <Locale>[Locale('en', 'US'), Locale('fr', 'CA')],
localizationsDelegates: GlobalMaterialLocalizations.delegates,
home: Material(
child: Builder(
builder: (BuildContext context) {
return TextButton(
onPressed: () async {
await showDatePicker(
context: context,
initialDate: initialDate,
firstDate: firstDate,
lastDate: lastDate,
locale: const Locale('fr', 'CA'),
textDirection: TextDirection.rtl,
);
},
child: const Text('X'),
);
},
),
),
);
}
Element getPicker() => tester.element(find.byType(CalendarDatePicker));
await tester.pumpWidget(buildFrame());
await tester.tap(find.text('X'));
await tester.pumpAndSettle();
expect(Localizations.localeOf(getPicker()), const Locale('fr', 'CA'));
expect(Directionality.of(getPicker()), TextDirection.rtl);
await tester.tap(find.text('ANNULER'));
});
testWidgets('Material3 - textDirection parameter takes precedence over locale parameter', (
WidgetTester tester,
) async {
Widget buildFrame() {
return MaterialApp(
locale: const Locale('en', 'US'),
supportedLocales: const <Locale>[Locale('en', 'US'), Locale('fr', 'CA')],
localizationsDelegates: GlobalMaterialLocalizations.delegates,
home: Material(
child: Builder(
builder: (BuildContext context) {
return TextButton(
onPressed: () async {
await showDatePicker(
context: context,
initialDate: initialDate,
firstDate: firstDate,
lastDate: lastDate,
locale: const Locale('fr', 'CA'),
textDirection: TextDirection.rtl,
);
},
child: const Text('X'),
);
},
),
),
);
}
Element getPicker() => tester.element(find.byType(CalendarDatePicker));
await tester.pumpWidget(buildFrame());
await tester.tap(find.text('X'));
await tester.pumpAndSettle(const Duration(seconds: 1));
expect(Localizations.localeOf(getPicker()), const Locale('fr', 'CA'));
expect(Directionality.of(getPicker()), TextDirection.rtl);
await tester.tap(find.text('Annuler'));
});
group("locale fonts don't overflow layout", () {
// Test screen layouts in various locales to ensure the fonts used
// don't overflow the layout
// Common screen size roughly based on a Pixel 1
const Size kCommonScreenSizePortrait = Size(1070, 1770);
const Size kCommonScreenSizeLandscape = Size(1770, 1070);
Future<void> showPicker(WidgetTester tester, Locale locale, Size size) async {
tester.view.physicalSize = size;
tester.view.devicePixelRatio = 1.0;
addTearDown(tester.view.reset);
await tester.pumpWidget(
MaterialApp(
home: Builder(
builder: (BuildContext context) {
return Localizations(
locale: locale,
delegates: GlobalMaterialLocalizations.delegates,
child: TextButton(
child: const Text('X'),
onPressed: () {
showDatePicker(
context: context,
initialDate: initialDate,
firstDate: firstDate,
lastDate: lastDate,
);
},
),
);
},
),
),
);
await tester.tap(find.text('X'));
await tester.pumpAndSettle();
}
// Regression test for https://github.com/flutter/flutter/issues/20171
testWidgets('common screen size - portrait - Chinese', (WidgetTester tester) async {
await showPicker(tester, const Locale('zh', 'CN'), kCommonScreenSizePortrait);
expect(tester.takeException(), isNull);
});
testWidgets('common screen size - landscape - Chinese', (WidgetTester tester) async {
await showPicker(tester, const Locale('zh', 'CN'), kCommonScreenSizeLandscape);
expect(tester.takeException(), isNull);
});
testWidgets('common screen size - portrait - Japanese', (WidgetTester tester) async {
await showPicker(tester, const Locale('ja', 'JA'), kCommonScreenSizePortrait);
expect(tester.takeException(), isNull);
});
testWidgets('common screen size - landscape - Japanese', (WidgetTester tester) async {
await showPicker(tester, const Locale('ja', 'JA'), kCommonScreenSizeLandscape);
expect(tester.takeException(), isNull);
});
});
}
Future<void> _pumpBoilerplate(
WidgetTester tester,
Widget child, {
Locale locale = const Locale('en', 'US'),
TextDirection textDirection = TextDirection.ltr,
}) async {
await tester.pumpWidget(
MaterialApp(
home: Directionality(
textDirection: TextDirection.ltr,
child: Localizations(
locale: locale,
delegates: GlobalMaterialLocalizations.delegates,
child: Material(child: child),
),
),
),
);
}