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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/cupertino.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter_test/flutter_test.dart';
void main() {
testWidgets('RenderParagraph relayout upon system fonts changes', (WidgetTester tester) async {
await tester.pumpWidget(
const MaterialApp(
home: Text('text widget'),
),
);
const Map<String, dynamic> data = <String, dynamic>{
'type': 'fontsChange',
};
await ServicesBinding.instance!.defaultBinaryMessenger.handlePlatformMessage(
'flutter/system',
SystemChannels.system.codec.encodeMessage(data),
(ByteData? data) { },
);
final RenderObject renderObject = tester.renderObject(find.text('text widget'));
expect(renderObject.debugNeedsLayout, isTrue);
});
testWidgets('RenderEditable relayout upon system fonts changes', (WidgetTester tester) async {
await tester.pumpWidget(
const MaterialApp(
home: SelectableText('text widget'),
),
);
const Map<String, dynamic> data = <String, dynamic>{
'type': 'fontsChange',
};
await ServicesBinding.instance!.defaultBinaryMessenger.handlePlatformMessage(
'flutter/system',
SystemChannels.system.codec.encodeMessage(data),
(ByteData? data) { },
);
final EditableTextState state = tester.state(find.byType(EditableText));
expect(state.renderEditable.debugNeedsLayout, isTrue);
});
testWidgets('Banner repaint upon system fonts changes', (WidgetTester tester) async {
await tester.pumpWidget(
const Banner(
message: 'message',
location: BannerLocation.topStart,
textDirection: TextDirection.ltr,
layoutDirection: TextDirection.ltr,
),
);
const Map<String, dynamic> data = <String, dynamic>{
'type': 'fontsChange',
};
await ServicesBinding.instance!.defaultBinaryMessenger.handlePlatformMessage(
'flutter/system',
SystemChannels.system.codec.encodeMessage(data),
(ByteData? data) { },
);
final RenderObject renderObject = tester.renderObject(find.byType(Banner));
expect(renderObject.debugNeedsPaint, isTrue);
});
testWidgets('CupertinoDatePicker reset cache upon system fonts change - date time mode', (WidgetTester tester) async {
await tester.pumpWidget(
CupertinoApp(
home: CupertinoDatePicker(
onDateTimeChanged: (DateTime dateTime) { },
),
),
);
final dynamic state = tester.state(find.byType(CupertinoDatePicker));
// ignore: avoid_dynamic_calls
final Map<int, double> cache = state.estimatedColumnWidths as Map<int, double>;
expect(cache.isNotEmpty, isTrue);
const Map<String, dynamic> data = <String, dynamic>{
'type': 'fontsChange',
};
await ServicesBinding.instance!.defaultBinaryMessenger.handlePlatformMessage(
'flutter/system',
SystemChannels.system.codec.encodeMessage(data),
(ByteData? data) { },
);
// Cache should be cleaned.
expect(cache.isEmpty, isTrue);
final Element element = tester.element(find.byType(CupertinoDatePicker));
expect(element.dirty, isTrue);
}, skip: isBrowser); // TODO(yjbanov): cupertino does not work on the Web yet: https://github.com/flutter/flutter/issues/41920
testWidgets('CupertinoDatePicker reset cache upon system fonts change - date mode', (WidgetTester tester) async {
await tester.pumpWidget(
CupertinoApp(
home: CupertinoDatePicker(
mode: CupertinoDatePickerMode.date,
onDateTimeChanged: (DateTime dateTime) { },
),
),
);
final dynamic state = tester.state(find.byType(CupertinoDatePicker));
// ignore: avoid_dynamic_calls
final Map<int, double> cache = state.estimatedColumnWidths as Map<int, double>;
// Simulates font missing.
cache.clear();
const Map<String, dynamic> data = <String, dynamic>{
'type': 'fontsChange',
};
await ServicesBinding.instance!.defaultBinaryMessenger.handlePlatformMessage(
'flutter/system',
SystemChannels.system.codec.encodeMessage(data),
(ByteData? data) { },
);
// Cache should be replenished
expect(cache.isNotEmpty, isTrue);
final Element element = tester.element(find.byType(CupertinoDatePicker));
expect(element.dirty, isTrue);
}, skip: isBrowser); // TODO(yjbanov): cupertino does not work on the Web yet: https://github.com/flutter/flutter/issues/41920
testWidgets('CupertinoDatePicker reset cache upon system fonts change - time mode', (WidgetTester tester) async {
await tester.pumpWidget(
CupertinoApp(
home: CupertinoTimerPicker(
onTimerDurationChanged: (Duration d) { },
),
),
);
final dynamic state = tester.state(find.byType(CupertinoTimerPicker));
// Simulates wrong metrics due to font missing.
// ignore: avoid_dynamic_calls
state.numberLabelWidth = 0.0;
// ignore: avoid_dynamic_calls
state.numberLabelHeight = 0.0;
// ignore: avoid_dynamic_calls
state.numberLabelBaseline = 0.0;
const Map<String, dynamic> data = <String, dynamic>{
'type': 'fontsChange',
};
await ServicesBinding.instance!.defaultBinaryMessenger.handlePlatformMessage(
'flutter/system',
SystemChannels.system.codec.encodeMessage(data),
(ByteData? data) { },
);
// Metrics should be refreshed
// ignore: avoid_dynamic_calls
expect(state.numberLabelWidth - 46.0 < precisionErrorTolerance, isTrue);
// ignore: avoid_dynamic_calls
expect(state.numberLabelHeight - 23.0 < precisionErrorTolerance, isTrue);
// ignore: avoid_dynamic_calls
expect(state.numberLabelBaseline - 18.400070190429688 < precisionErrorTolerance, isTrue);
final Element element = tester.element(find.byType(CupertinoTimerPicker));
expect(element.dirty, isTrue);
}, skip: isBrowser); // TODO(yjbanov): cupertino does not work on the Web yet: https://github.com/flutter/flutter/issues/41920
testWidgets('RangeSlider relayout upon system fonts changes', (WidgetTester tester) async {
await tester.pumpWidget(
MaterialApp(
home: Material(
child: RangeSlider(
values: const RangeValues(0.0, 1.0),
onChanged: (RangeValues values) { },
),
),
),
);
const Map<String, dynamic> data = <String, dynamic>{
'type': 'fontsChange',
};
await ServicesBinding.instance!.defaultBinaryMessenger.handlePlatformMessage(
'flutter/system',
SystemChannels.system.codec.encodeMessage(data),
(ByteData? data) { },
);
final RenderObject renderObject = tester.renderObject(find.byType(RangeSlider));
late bool sliderBoxNeedsLayout;
renderObject.visitChildren((RenderObject child) {sliderBoxNeedsLayout = child.debugNeedsLayout;});
expect(sliderBoxNeedsLayout, isTrue);
});
testWidgets('Slider relayout upon system fonts changes', (WidgetTester tester) async {
await tester.pumpWidget(
MaterialApp(
home: Material(
child: Slider(
value: 0.0,
onChanged: (double value) { },
),
),
),
);
const Map<String, dynamic> data = <String, dynamic>{
'type': 'fontsChange',
};
await ServicesBinding.instance!.defaultBinaryMessenger.handlePlatformMessage(
'flutter/system',
SystemChannels.system.codec.encodeMessage(data),
(ByteData? data) { },
);
// _RenderSlider is the last render object in the tree.
final RenderObject renderObject = tester.allRenderObjects.last;
expect(renderObject.debugNeedsLayout, isTrue);
});
testWidgets('TimePicker relayout upon system fonts changes', (WidgetTester tester) async {
await tester.pumpWidget(
MaterialApp(
home: Material(
child: Center(
child: Builder(
builder: (BuildContext context) {
return ElevatedButton(
child: const Text('X'),
onPressed: () {
showTimePicker(
context: context,
initialTime: const TimeOfDay(hour: 7, minute: 0),
builder: (BuildContext context, Widget? child) {
return Directionality(
key: const Key('parent'),
textDirection: TextDirection.ltr,
child: child!,
);
},
);
},
);
},
),
),
),
),
);
await tester.tap(find.text('X'));
await tester.pumpAndSettle();
const Map<String, dynamic> data = <String, dynamic>{
'type': 'fontsChange',
};
await ServicesBinding.instance!.defaultBinaryMessenger.handlePlatformMessage(
'flutter/system',
SystemChannels.system.codec.encodeMessage(data),
(ByteData? data) { },
);
final RenderObject renderObject = tester.renderObject(
find.descendant(
of: find.byKey(const Key('parent')),
matching: find.byType(CustomPaint),
).first,
);
expect(renderObject.debugNeedsPaint, isTrue);
});
}