// Copyright 2015 The Chromium 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_test/flutter_test.dart'; import 'package:flutter/material.dart'; Key firstKey = const Key('first'); Key secondKey = const Key('second'); Key thirdKey = const Key('third'); Key homeRouteKey = const Key('homeRoute'); Key routeTwoKey = const Key('routeTwo'); Key routeThreeKey = const Key('routeThree'); final Map<String, WidgetBuilder> routes = <String, WidgetBuilder>{ '/': (BuildContext context) => new Material( child: new ListView( key: homeRouteKey, children: <Widget>[ new Container(height: 100.0, width: 100.0), new Card(child: new Hero(tag: 'a', child: new Container(height: 100.0, width: 100.0, key: firstKey))), new Container(height: 100.0, width: 100.0), new FlatButton( child: new Text('two'), onPressed: () { Navigator.pushNamed(context, '/two'); } ), ] ) ), '/two': (BuildContext context) => new Material( child: new ListView( key: routeTwoKey, children: <Widget>[ new FlatButton( child: new Text('pop'), onPressed: () { Navigator.pop(context); } ), new Container(height: 150.0, width: 150.0), new Card(child: new Hero(tag: 'a', child: new Container(height: 150.0, width: 150.0, key: secondKey))), new Container(height: 150.0, width: 150.0), new FlatButton( child: new Text('three'), onPressed: () { Navigator.push(context, new ThreeRoute()); }, ), ] ) ), }; class ThreeRoute extends MaterialPageRoute<Null> { ThreeRoute() : super(builder: (BuildContext context) { return new Material( key: routeThreeKey, child: new ListView( children: <Widget>[ new Container(height: 200.0, width: 200.0), new Card(child: new Hero(tag: 'a', child: new Container(height: 200.0, width: 200.0, key: thirdKey))), new Container(height: 200.0, width: 200.0), ] ) ); }); } class MutatingRoute extends MaterialPageRoute<Null> { MutatingRoute() : super(builder: (BuildContext context) { return new Hero(tag: 'a', child: new Text('MutatingRoute'), key: new UniqueKey()); }); void markNeedsBuild() { setState(() { // Trigger a rebuild }); } } void main() { testWidgets('Heroes animate', (WidgetTester tester) async { await tester.pumpWidget(new MaterialApp(routes: routes)); // the initial setup. expect(find.byKey(firstKey), isOnstage); expect(find.byKey(firstKey), isInCard); expect(find.byKey(secondKey), findsNothing); await tester.tap(find.text('two')); await tester.pump(); // begin navigation // at this stage, the second route is offstage, so that we can form the // hero party. expect(find.byKey(firstKey), isOnstage); expect(find.byKey(firstKey), isInCard); expect(find.byKey(secondKey, skipOffstage: false), isOffstage); expect(find.byKey(secondKey, skipOffstage: false), isInCard); await tester.pump(); // at this stage, the heroes have just gone on their journey, we are // seeing them at t=16ms. The original page no longer contains the hero. expect(find.byKey(firstKey), findsNothing); expect(find.byKey(secondKey), isOnstage); expect(find.byKey(secondKey), isNotInCard); await tester.pump(); // t=32ms for the journey. Surely they are still at it. expect(find.byKey(firstKey), findsNothing); expect(find.byKey(secondKey), isOnstage); expect(find.byKey(secondKey), isNotInCard); await tester.pump(const Duration(seconds: 1)); // t=1.032s for the journey. The journey has ended (it ends this frame, in // fact). The hero should now be in the new page, onstage. The original // widget will be back as well now (though not visible). expect(find.byKey(firstKey), findsNothing); expect(find.byKey(secondKey), isOnstage); expect(find.byKey(secondKey), isInCard); await tester.pump(); // Should not change anything. expect(find.byKey(firstKey), findsNothing); expect(find.byKey(secondKey), isOnstage); expect(find.byKey(secondKey), isInCard); // Now move on to view 3 await tester.tap(find.text('three')); await tester.pump(); // begin navigation // at this stage, the second route is offstage, so that we can form the // hero party. expect(find.byKey(secondKey), isOnstage); expect(find.byKey(secondKey), isInCard); expect(find.byKey(thirdKey, skipOffstage: false), isOffstage); expect(find.byKey(thirdKey, skipOffstage: false), isInCard); await tester.pump(); // at this stage, the heroes have just gone on their journey, we are // seeing them at t=16ms. The original page no longer contains the hero. expect(find.byKey(secondKey), findsNothing); expect(find.byKey(thirdKey), isOnstage); expect(find.byKey(thirdKey), isNotInCard); await tester.pump(); // t=32ms for the journey. Surely they are still at it. expect(find.byKey(secondKey), findsNothing); expect(find.byKey(thirdKey), isOnstage); expect(find.byKey(thirdKey), isNotInCard); await tester.pump(const Duration(seconds: 1)); // t=1.032s for the journey. The journey has ended (it ends this frame, in // fact). The hero should now be in the new page, onstage. expect(find.byKey(secondKey), findsNothing); expect(find.byKey(thirdKey), isOnstage); expect(find.byKey(thirdKey), isInCard); await tester.pump(); // Should not change anything. expect(find.byKey(secondKey), findsNothing); expect(find.byKey(thirdKey), isOnstage); expect(find.byKey(thirdKey), isInCard); }); testWidgets('Heroes animate', (WidgetTester tester) async { MutatingRoute route = new MutatingRoute(); await tester.pumpWidget(new MaterialApp( home: new Material( child: new ListView( children: <Widget>[ new Hero(tag: 'a', child: new Text('foo')), new Builder(builder: (BuildContext context) { return new FlatButton(child: new Text('two'), onPressed: () => Navigator.push(context, route)); }) ] ) ) )); await tester.tap(find.text('two')); await tester.pump(const Duration(milliseconds: 10)); route.markNeedsBuild(); await tester.pump(const Duration(milliseconds: 10)); await tester.pump(const Duration(seconds: 1)); }); testWidgets('Heroes animation is fastOutSlowIn', (WidgetTester tester) async { await tester.pumpWidget(new MaterialApp(routes: routes)); await tester.tap(find.text('two')); await tester.pump(); // begin navigation // Expect the height of the secondKey Hero to vary from 100 to 150 // over duration and according to curve. final Duration duration = const Duration(milliseconds: 300); final Curve curve = Curves.fastOutSlowIn; final double initialHeight = tester.getSize(find.byKey(firstKey, skipOffstage: false)).height; final double finalHeight = tester.getSize(find.byKey(secondKey, skipOffstage: false)).height; final double deltaHeight = finalHeight - initialHeight; final double epsilon = 0.001; await tester.pump(duration * 0.25); expect( tester.getSize(find.byKey(secondKey)).height, closeTo(curve.transform(0.25) * deltaHeight + initialHeight, epsilon) ); await tester.pump(duration * 0.25); expect( tester.getSize(find.byKey(secondKey)).height, closeTo(curve.transform(0.50) * deltaHeight + initialHeight, epsilon) ); await tester.pump(duration * 0.25); expect( tester.getSize(find.byKey(secondKey)).height, closeTo(curve.transform(0.75) * deltaHeight + initialHeight, epsilon) ); await tester.pump(duration * 0.25); expect( tester.getSize(find.byKey(secondKey)).height, closeTo(curve.transform(1.0) * deltaHeight + initialHeight, epsilon) ); }); testWidgets('Heroes are not interactive', (WidgetTester tester) async { List<String> log = <String>[]; await tester.pumpWidget(new MaterialApp( home: new Center( child: new Hero( tag: 'foo', child: new GestureDetector( onTap: () { log.add('foo'); }, child: new Container( width: 100.0, height: 100.0, child: new Text('foo') ) ) ) ), routes: <String, WidgetBuilder>{ '/next': (BuildContext context) { return new Align( alignment: FractionalOffset.topLeft, child: new Hero( tag: 'foo', child: new GestureDetector( onTap: () { log.add('bar'); }, child: new Container( width: 100.0, height: 150.0, child: new Text('bar') ) ) ) ); } } )); expect(log, isEmpty); await tester.tap(find.text('foo')); expect(log, equals(<String>['foo'])); log.clear(); NavigatorState navigator = tester.state(find.byType(Navigator)); navigator.pushNamed('/next'); expect(log, isEmpty); await tester.tap(find.text('foo', skipOffstage: false)); expect(log, isEmpty); await tester.pump(const Duration(milliseconds: 10)); await tester.tap(find.text('foo', skipOffstage: false)); expect(log, isEmpty); await tester.tap(find.text('bar', skipOffstage: false)); expect(log, isEmpty); await tester.pump(const Duration(milliseconds: 10)); expect(find.text('foo'), findsNothing); await tester.tap(find.text('bar', skipOffstage: false)); expect(log, isEmpty); await tester.pump(const Duration(seconds: 1)); expect(find.text('foo'), findsNothing); await tester.tap(find.text('bar')); expect(log, equals(<String>['bar'])); }); testWidgets('Popping on first frame does not cause hero observer to crash', (WidgetTester tester) async { await tester.pumpWidget(new MaterialApp( onGenerateRoute: (RouteSettings settings) { return new MaterialPageRoute<Null>( settings: settings, builder: (BuildContext context) => new Hero(tag: 'test', child: new Container()), ); }, )); await tester.pump(); Finder heroes = find.byType(Hero); expect(heroes, findsOneWidget); Navigator.pushNamed(heroes.evaluate().first, 'test'); await tester.pump(); // adds the new page to the tree... Navigator.pop(heroes.evaluate().first); await tester.pump(); // ...and removes it straight away (since it's already at 0.0) // this is verifying that there's no crash // TODO(ianh): once https://github.com/flutter/flutter/issues/5631 is fixed, remove this line: await tester.pump(const Duration(hours: 1)); }); testWidgets('Overlapping starting and ending a hero transition works ok', (WidgetTester tester) async { await tester.pumpWidget(new MaterialApp( onGenerateRoute: (RouteSettings settings) { return new MaterialPageRoute<Null>( settings: settings, builder: (BuildContext context) => new Hero(tag: 'test', child: new Container()), ); }, )); await tester.pump(); Finder heroes = find.byType(Hero); expect(heroes, findsOneWidget); Navigator.pushNamed(heroes.evaluate().first, 'test'); await tester.pump(); await tester.pump(const Duration(hours: 1)); Navigator.pushNamed(heroes.evaluate().first, 'test'); await tester.pump(); await tester.pump(const Duration(hours: 1)); Navigator.pop(heroes.evaluate().first); await tester.pump(); Navigator.pop(heroes.evaluate().first); await tester.pump(const Duration(hours: 1)); // so the first transition is finished, but the second hasn't started await tester.pump(); // this is verifying that there's no crash // TODO(ianh): once https://github.com/flutter/flutter/issues/5631 is fixed, remove this line: await tester.pump(const Duration(hours: 1)); }); testWidgets('One route, two heroes, same tag, throws', (WidgetTester tester) async { await tester.pumpWidget(new MaterialApp( home: new Material( child: new ListView( children: <Widget>[ new Hero(tag: 'a', child: new Text('a')), new Hero(tag: 'a', child: new Text('a too')), new Builder( builder: (BuildContext context) { return new FlatButton( child: new Text('push'), onPressed: () { Navigator.push(context, new PageRouteBuilder<Null>( pageBuilder: (BuildContext context, Animation<double> _, Animation<double> __) { return new Text('fail'); }, )); }, ); }, ), ], ), ), )); await tester.tap(find.text('push')); await tester.pump(); expect(tester.takeException(), isFlutterError); }); testWidgets('Hero push transition interrupted by a pop', (WidgetTester tester) async { await tester.pumpWidget(new MaterialApp( routes: routes )); // Initially the firstKey Card on the '/' route is visible expect(find.byKey(firstKey), isOnstage); expect(find.byKey(firstKey), isInCard); expect(find.byKey(secondKey), findsNothing); // Pushes MaterialPageRoute '/two'. await tester.tap(find.text('two')); // Start the flight of Hero 'a' from route '/' to route '/two'. Route '/two' // is now offstage. await tester.pump(); final double initialHeight = tester.getSize(find.byKey(firstKey)).height; final double finalHeight = tester.getSize(find.byKey(secondKey, skipOffstage: false)).height; expect(finalHeight, greaterThan(initialHeight)); // simplify the checks below // Build the first hero animation frame in the navigator's overlay. await tester.pump(); // At this point the hero widgets have been replaced by placeholders // and the destination hero has been moved to the overlay. expect(find.descendant(of: find.byKey(homeRouteKey), matching: find.byKey(firstKey)), findsNothing); expect(find.descendant(of: find.byKey(routeTwoKey), matching: find.byKey(secondKey)), findsNothing); expect(find.byKey(firstKey), findsNothing); expect(find.byKey(secondKey), isOnstage); // The duration of a MaterialPageRoute's transition is 300ms. // At 150ms Hero 'a' is mid-flight. await tester.pump(const Duration(milliseconds: 150)); final double height150ms = tester.getSize(find.byKey(secondKey)).height; expect(height150ms, greaterThan(initialHeight)); expect(height150ms, lessThan(finalHeight)); // Pop route '/two' before the push transition to '/two' has finished. await tester.tap(find.text('pop')); // Restart the flight of Hero 'a'. Now it's flying from route '/two' to // route '/'. await tester.pump(); // After flying in the opposite direction for 50ms Hero 'a' will // be smaller than it was, but bigger than its initial size. await tester.pump(const Duration(milliseconds: 50)); final double height100ms = tester.getSize(find.byKey(secondKey)).height; expect(height100ms, lessThan(height150ms)); expect(finalHeight, greaterThan(height100ms)); // Hero a's return flight at 149ms. The outgoing (push) flight took // 150ms so we should be just about back to where Hero 'a' started. final double epsilon = 0.001; await tester.pump(const Duration(milliseconds: 99)); closeTo(tester.getSize(find.byKey(secondKey)).height - initialHeight, epsilon); // The flight is finished. We're back to where we started. await tester.pump(const Duration(milliseconds: 300)); expect(find.byKey(firstKey), isOnstage); expect(find.byKey(firstKey), isInCard); expect(find.byKey(secondKey), findsNothing); }); testWidgets('Hero pop transition interrupted by a push', (WidgetTester tester) async { await tester.pumpWidget( new MaterialApp(routes: routes) ); // Pushes MaterialPageRoute '/two'. await tester.tap(find.text('two')); await tester.pump(); await tester.pump(const Duration(seconds: 1)); // Now the secondKey Card on the '/2' route is visible expect(find.byKey(secondKey), isOnstage); expect(find.byKey(secondKey), isInCard); expect(find.byKey(firstKey), findsNothing); // Pop MaterialPageRoute '/two'. await tester.tap(find.text('pop')); // Start the flight of Hero 'a' from route '/two' to route '/'. Route '/two' // is now offstage. await tester.pump(); final double initialHeight = tester.getSize(find.byKey(secondKey)).height; final double finalHeight = tester.getSize(find.byKey(firstKey, skipOffstage: false)).height; expect(finalHeight, lessThan(initialHeight)); // simplify the checks below // Build the first hero animation frame in the navigator's overlay. await tester.pump(); // At this point the hero widgets have been replaced by placeholders // and the destination hero has been moved to the overlay. expect(find.descendant(of: find.byKey(homeRouteKey), matching: find.byKey(firstKey)), findsNothing); expect(find.descendant(of: find.byKey(routeTwoKey), matching: find.byKey(secondKey)), findsNothing); expect(find.byKey(firstKey), isOnstage); expect(find.byKey(secondKey), findsNothing); // The duration of a MaterialPageRoute's transition is 300ms. // At 150ms Hero 'a' is mid-flight. await tester.pump(const Duration(milliseconds: 150)); final double height150ms = tester.getSize(find.byKey(firstKey)).height; expect(height150ms, lessThan(initialHeight)); expect(height150ms, greaterThan(finalHeight)); // Push route '/two' before the pop transition from '/two' has finished. await tester.tap(find.text('two')); // Restart the flight of Hero 'a'. Now it's flying from route '/' to // route '/two'. await tester.pump(); // After flying in the opposite direction for 50ms Hero 'a' will // be smaller than it was, but bigger than its initial size. await tester.pump(const Duration(milliseconds: 50)); final double height100ms = tester.getSize(find.byKey(firstKey)).height; expect(height100ms, greaterThan(height150ms)); expect(finalHeight, lessThan(height100ms)); // Hero a's return flight at 149ms. The outgoing (push) flight took // 150ms so we should be just about back to where Hero 'a' started. final double epsilon = 0.001; await tester.pump(const Duration(milliseconds: 99)); closeTo(tester.getSize(find.byKey(firstKey)).height - initialHeight, epsilon); // The flight is finished. We're back to where we started. await tester.pump(const Duration(milliseconds: 300)); expect(find.byKey(secondKey), isOnstage); expect(find.byKey(secondKey), isInCard); expect(find.byKey(firstKey), findsNothing); }); }