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Added a hero test (#8629)

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Hans Muller 2017-03-07 14:56:48 -08:00 committed by GitHub
parent 81b81d3087
commit 0d958f036c
1 changed files with 104 additions and 1 deletions
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105
packages/flutter/test/widgets/heroes_test.dart
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@ -180,7 +180,7 @@ void main() {
expect(find.byKey(thirdKey), isInCard);
});
testWidgets('Heroes animate', (WidgetTester tester) async {
testWidgets('Destination hero is rebuilt midflight', (WidgetTester tester) async {
final MutatingRoute route = new MutatingRoute();
await tester.pumpWidget(new MaterialApp(
@ -540,4 +540,107 @@ void main() {
expect(find.byKey(secondKey), isInCard);
expect(find.byKey(firstKey), findsNothing);
});
testWidgets('Destination hero disappears mid-flight', (WidgetTester tester) async {
final Key homeHeroKey = const Key('home hero');
final Key routeHeroKey = const Key('route hero');
bool routeIncludesHero = true;
StateSetter heroCardSetState;
// 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 StatefulBuilder(
builder: (BuildContext context, StateSetter setState) {
heroCardSetState = setState;
return new Card(
child: routeIncludesHero
? new Hero(tag: 'H', child: new Container(key: routeHeroKey, height: 200.0, width: 200.0))
: new Container(height: 200.0, width: 200.0),
);
},
),
new FlatButton(
child: new Text('POP'),
onPressed: () { Navigator.pop(context); }
),
],
)
);
},
);
// 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 Card(
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 initialHeight = tester.getSize(find.byKey(routeHeroKey)).height;
await tester.pump(const Duration(milliseconds: 10));
double midflightHeight = tester.getSize(find.byKey(routeHeroKey)).height;
expect(midflightHeight, greaterThan(initialHeight));
expect(midflightHeight, lessThan(200.0));
await tester.pump(const Duration(milliseconds: 300));
await tester.pump();
double finalHeight = tester.getSize(find.byKey(routeHeroKey)).height;
expect(finalHeight, 200.0);
// Complete the flight
await tester.pump(const Duration(milliseconds: 100));
// Rebuild route with its Hero
heroCardSetState(() {
routeIncludesHero = true;
});
await tester.pump();
// Pops route
await tester.tap(find.text('POP'));
await tester.pump();
await tester.pump();
await tester.pump(const Duration(milliseconds: 10));
midflightHeight = tester.getSize(find.byKey(homeHeroKey)).height;
expect(midflightHeight, lessThan(finalHeight));
expect(midflightHeight, greaterThan(100.0));
// Remove the destination hero midlfight
heroCardSetState(() {
routeIncludesHero = false;
});
await tester.pump();
await tester.pump(const Duration(milliseconds: 300));
finalHeight = tester.getSize(find.byKey(homeHeroKey)).height;
expect(finalHeight, 100.0);
});
}