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Verify that stateful hero state persists mid-flight (#8817)

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Hans Muller 2017-03-17 15:00:58 -07:00 committed by GitHub
parent d52c0a8f18
commit d1f4822e07
1 changed files with 94 additions and 0 deletions
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94
packages/flutter/test/widgets/heroes_test.dart
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@ -76,6 +76,18 @@ class MutatingRoute extends MaterialPageRoute<Null> {
}
}
class MyStatefulWidget extends StatefulWidget {
MyStatefulWidget({ Key key, this.value: '123' }) : super(key: key);
final String value;
@override
MyStatefulWidgetState createState() => new MyStatefulWidgetState();
}
class MyStatefulWidgetState extends State<MyStatefulWidget> {
@override
Widget build(BuildContext context) => new Text(config.value);
}
void main() {
testWidgets('Heroes animate', (WidgetTester tester) async {
@ -911,4 +923,86 @@ void main() {
expect(tester.getTopLeft(find.byKey(heroBCKey)).y, 0.0);
});
testWidgets('Stateful hero child state survives flight', (WidgetTester tester) async {
final MaterialPageRoute<Null> route = new MaterialPageRoute<Null>(
builder: (BuildContext context) {
return new Material(
child: new ListView(
children: <Widget>[
new Card(
child: new Hero(
tag: 'H',
child: new SizedBox(
height: 200.0,
child: new MyStatefulWidget(value: '456'),
),
),
),
new FlatButton(
child: new Text('POP'),
onPressed: () { Navigator.pop(context); }
),
],
)
);
},
);
await tester.pumpWidget(
new MaterialApp(
home: new Scaffold(
body: new Builder(
builder: (BuildContext context) { // Navigator.push() needs context
return new ListView(
children: <Widget> [
new Card(
child: new Hero(
tag: 'H',
child: new SizedBox(
height: 100.0,
child: new MyStatefulWidget(value: '456'),
),
),
),
new FlatButton(
child: new Text('PUSH'),
onPressed: () { Navigator.push(context, route); }
),
],
);
},
),
),
)
);
expect(find.text('456'), findsOneWidget);
// Push route.
await tester.tap(find.text('PUSH'));
await tester.pump();
await tester.pump();
// Push flight underway.
await tester.pump(const Duration(milliseconds: 100));
expect(find.text('456'), findsOneWidget);
// Push flight finished.
await tester.pump(const Duration(milliseconds: 300));
expect(find.text('456'), findsOneWidget);
// Pop route.
await tester.tap(find.text('POP'));
await tester.pump();
await tester.pump();
// Pop flight underway.
await tester.pump(const Duration(milliseconds: 100));
expect(find.text('456'), findsOneWidget);
// Pop flight finished
await tester.pump(const Duration(milliseconds: 300));
expect(find.text('456'), findsOneWidget);
});
}