bottom_sheet_test.dart
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import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:modal_bottom_sheet/modal_bottom_sheet.dart';
void main() {
group(
'Route.mainState are well-controlled by `mainState`',
() {
testWidgets('with showCupertinoModalBottomSheet', (tester) async {
int _initState = 0, _dispose = 0;
await _pumpWidget(
tester: tester,
onPressed: (context) => showCupertinoModalBottomSheet(
context: context,
builder: (_) => _TestWidget(
onInitState: () => _initState++,
onDispose: () => _dispose++,
),
),
);
expect(_initState, 0);
await tester.tap(_textButtonWithText('Press me'));
await tester.pumpAndSettle();
expect(_initState, 1);
expect(_dispose, 0);
await tester.tap(_textButtonWithText('TestWidget push'));
await tester.pumpAndSettle();
expect(_initState, 1);
expect(_dispose, 0);
await tester.tap(_textButtonWithText('TestWidget pushed pop'));
await tester.pumpAndSettle();
expect(_initState, 1);
expect(_dispose, 0);
await tester.tap(_textButtonWithText('TestWidget pop'));
await tester.pumpAndSettle();
expect(_initState, 1);
expect(_dispose, 1);
});
},
);
}
Future<void> _pumpWidget({
required WidgetTester tester,
required void Function(BuildContext context) onPressed,
}) {
return tester.pumpWidget(
MaterialApp(
home: Builder(
builder: (context) => Scaffold(
body: Center(
child: TextButton(
onPressed: () => onPressed(context),
child: Text('Press me'),
),
),
),
),
),
);
}
Finder _textButtonWithText(String text) {
return find.widgetWithText(TextButton, text);
}
class _TestWidget extends StatefulWidget {
const _TestWidget({
Key? key,
this.onInitState,
this.onDispose,
}) : super(key: key);
final VoidCallback? onInitState;
final VoidCallback? onDispose;
@override
State<_TestWidget> createState() => _TestWidgetState();
}
class _TestWidgetState extends State<_TestWidget> {
@override
void initState() {
super.initState();
widget.onInitState?.call();
}
@override
void dispose() {
widget.onDispose?.call();
super.dispose();
}
@override
Widget build(BuildContext context) {
return Scaffold(
body: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
TextButton(
onPressed: () => Navigator.of(context).push(
defaultPageRoute(
targetPlatform: Theme.of(context).platform,
builder: (context) => Scaffold(
body: Center(
child: TextButton(
onPressed: () => Navigator.of(context).pop(),
child: Text('TestWidget pushed pop'),
),
),
),
),
),
child: Text('TestWidget push'),
),
TextButton(
onPressed: () => Navigator.of(context).pop(),
child: Text('TestWidget pop'),
),
],
),
);
}
}
PageRoute<T> defaultPageRoute<T>({
required TargetPlatform targetPlatform,
required WidgetBuilder builder,
RouteSettings? settings,
bool maintainState = true,
bool fullscreenDialog = false,
}) {
switch (targetPlatform) {
case TargetPlatform.iOS:
case TargetPlatform.macOS:
return CupertinoPageRoute<T>(
builder: builder,
settings: settings,
maintainState: maintainState,
fullscreenDialog: fullscreenDialog,
);
default:
return MaterialPageRoute<T>(
builder: builder,
settings: settings,
maintainState: maintainState,
fullscreenDialog: fullscreenDialog,
);
}
}