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Additional Hero tests: destination moves midflight (#8668)

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Hans Muller 2017-03-09 10:36:53 -08:00 committed by GitHub
parent a97eb12147
commit 00c9e326db
1 changed files with 161 additions and 0 deletions
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161
packages/flutter/test/widgets/heroes_test.dart
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@ -643,4 +643,165 @@ void main() {
expect(finalHeight, 100.0);
});
testWidgets('Destination hero scrolls mid-flight', (WidgetTester tester) async {
final Key homeHeroKey = const Key('home hero');
final Key routeHeroKey = const Key('route hero');
final Key routeContainerKey = const Key('route hero container');
// Show a 200x200 Hero tagged 'H', with key routeHeroKey
final MaterialPageRoute<Null> route = new MaterialPageRoute<Null>(
builder: (BuildContext context) {
return new Material(
child: new ListView(
children: <Widget>[
new SizedBox(height: 100.0),
// This container will appear at Y=100
new Container(
key: routeContainerKey,
child: new Hero(tag: 'H', child: new Container(key: routeHeroKey, height: 200.0, width: 200.0))
),
new FlatButton(
child: new Text('POP'),
onPressed: () { Navigator.pop(context); }
),
new SizedBox(height: 600.0),
],
)
);
},
);
// Show a 100x100 Hero tagged 'H' with key homeHeroKey
await tester.pumpWidget(
new MaterialApp(
home: new Scaffold(
body: new Builder(
builder: (BuildContext context) { // Navigator.push() needs context
return new ListView(
children: <Widget> [
new SizedBox(height: 200.0),
// This container will appear at Y=200
new Container(
child: new Hero(tag: 'H', child: new Container(key: homeHeroKey, height: 100.0, width: 100.0)),
),
new FlatButton(
child: new Text('PUSH'),
onPressed: () { Navigator.push(context, route); }
),
new SizedBox(height: 600.0),
],
);
},
),
),
)
);
// Pushes route
await tester.tap(find.text('PUSH'));
await tester.pump();
await tester.pump();
final double initialY = tester.getTopLeft(find.byKey(routeHeroKey)).y;
expect(initialY, 200.0);
await tester.pump(const Duration(milliseconds: 100));
final double yAt100ms = tester.getTopLeft(find.byKey(routeHeroKey)).y;
expect(yAt100ms, lessThan(200.0));
expect(yAt100ms, greaterThan(100.0));
// Scroll the target upwards by 25 pixels. The Hero flight's Y coordinate
// will be redirected from 100 to 75.
await(tester.scroll(find.byKey(routeContainerKey), const Offset(0.0, -25.0)));
await tester.pump();
await tester.pump(const Duration(milliseconds: 10));
final double yAt110ms = tester.getTopLeft(find.byKey(routeHeroKey)).y;
expect(yAt110ms, lessThan(yAt100ms));
expect(yAt110ms, greaterThan(75.0));
await tester.pump(const Duration(milliseconds: 300));
await tester.pump();
final double finalHeroY = tester.getTopLeft(find.byKey(routeHeroKey)).y;
expect(finalHeroY, 75.0); // 100 less 25 for the scroll
});
testWidgets('Destination hero scrolls out of view mid-flight', (WidgetTester tester) async {
final Key homeHeroKey = const Key('home hero');
final Key routeHeroKey = const Key('route hero');
final Key routeContainerKey = const Key('route hero container');
// Show a 200x200 Hero tagged 'H', with key routeHeroKey
final MaterialPageRoute<Null> route = new MaterialPageRoute<Null>(
builder: (BuildContext context) {
return new Material(
child: new ListView(
children: <Widget>[
new SizedBox(height: 100.0),
// This container will appear at Y=100
new Container(
key: routeContainerKey,
child: new Hero(tag: 'H', child: new Container(key: routeHeroKey, height: 200.0, width: 200.0))
),
new SizedBox(height: 800.0),
],
)
);
},
);
// Show a 100x100 Hero tagged 'H' with key homeHeroKey
await tester.pumpWidget(
new MaterialApp(
home: new Scaffold(
body: new Builder(
builder: (BuildContext context) { // Navigator.push() needs context
return new ListView(
children: <Widget> [
new SizedBox(height: 200.0),
// This container will appear at Y=200
new Container(
child: new Hero(tag: 'H', child: new Container(key: homeHeroKey, height: 100.0, width: 100.0)),
),
new FlatButton(
child: new Text('PUSH'),
onPressed: () { Navigator.push(context, route); }
),
],
);
},
),
),
)
);
// Pushes route
await tester.tap(find.text('PUSH'));
await tester.pump();
await tester.pump();
final double initialY = tester.getTopLeft(find.byKey(routeHeroKey)).y;
expect(initialY, 200.0);
await tester.pump(const Duration(milliseconds: 100));
final double yAt100ms = tester.getTopLeft(find.byKey(routeHeroKey)).y;
expect(yAt100ms, lessThan(200.0));
expect(yAt100ms, greaterThan(100.0));
await(tester.scroll(find.byKey(routeContainerKey), const Offset(0.0, -400.0)));
await tester.pump();
await tester.pump(const Duration(milliseconds: 10));
expect(find.byKey(routeContainerKey), findsNothing); // Scrolled off the top
// Flight continues (the hero will fade out) even though the destination
// no longer exists.
final double yAt110ms = tester.getTopLeft(find.byKey(routeHeroKey)).y;
expect(yAt110ms, lessThan(yAt100ms));
expect(yAt110ms, greaterThan(100.0));
await tester.pump(const Duration(milliseconds: 300));
await tester.pump();
expect(find.byKey(routeHeroKey), findsNothing);
});
}