| // Copyright 2014 The Flutter Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // @dart = 2.8 |
| |
| import 'package:flutter/foundation.dart'; |
| import 'package:flutter/material.dart'; |
| import 'package:flutter/cupertino.dart' show CupertinoPageRoute; |
| import 'package:flutter/rendering.dart'; |
| import 'package:flutter_test/flutter_test.dart'; |
| |
| import '../rendering/mock_canvas.dart'; |
| |
| void main() { |
| testWidgets('test page transition', (WidgetTester tester) async { |
| await tester.pumpWidget( |
| MaterialApp( |
| home: const Material(child: Text('Page 1')), |
| routes: <String, WidgetBuilder>{ |
| '/next': (BuildContext context) { |
| return const Material(child: Text('Page 2')); |
| }, |
| }, |
| ), |
| ); |
| |
| final Offset widget1TopLeft = tester.getTopLeft(find.text('Page 1')); |
| |
| tester.state<NavigatorState>(find.byType(Navigator)).pushNamed('/next'); |
| await tester.pump(); |
| await tester.pump(const Duration(milliseconds: 1)); |
| |
| FadeTransition widget2Opacity = |
| tester.element(find.text('Page 2')).findAncestorWidgetOfExactType<FadeTransition>(); |
| Offset widget2TopLeft = tester.getTopLeft(find.text('Page 2')); |
| final Size widget2Size = tester.getSize(find.text('Page 2')); |
| |
| // Android transition is vertical only. |
| expect(widget1TopLeft.dx == widget2TopLeft.dx, true); |
| // Page 1 is above page 2 mid-transition. |
| expect(widget1TopLeft.dy < widget2TopLeft.dy, true); |
| // Animation begins 3/4 of the way up the page. |
| expect(widget2TopLeft.dy < widget2Size.height / 4.0, true); |
| // Animation starts with page 2 being near transparent. |
| expect(widget2Opacity.opacity.value < 0.01, true); |
| |
| await tester.pump(const Duration(milliseconds: 300)); |
| |
| // Page 2 covers page 1. |
| expect(find.text('Page 1'), findsNothing); |
| expect(find.text('Page 2'), isOnstage); |
| |
| tester.state<NavigatorState>(find.byType(Navigator)).pop(); |
| await tester.pump(); |
| await tester.pump(const Duration(milliseconds: 1)); |
| |
| widget2Opacity = |
| tester.element(find.text('Page 2')).findAncestorWidgetOfExactType<FadeTransition>(); |
| widget2TopLeft = tester.getTopLeft(find.text('Page 2')); |
| |
| // Page 2 starts to move down. |
| expect(widget1TopLeft.dy < widget2TopLeft.dy, true); |
| // Page 2 starts to lose opacity. |
| expect(widget2Opacity.opacity.value < 1.0, true); |
| |
| await tester.pump(const Duration(milliseconds: 300)); |
| |
| expect(find.text('Page 1'), isOnstage); |
| expect(find.text('Page 2'), findsNothing); |
| }, variant: TargetPlatformVariant.only(TargetPlatform.android)); |
| |
| testWidgets('test page transition', (WidgetTester tester) async { |
| final Key page2Key = UniqueKey(); |
| await tester.pumpWidget( |
| MaterialApp( |
| home: const Material(child: Text('Page 1')), |
| routes: <String, WidgetBuilder>{ |
| '/next': (BuildContext context) { |
| return Material( |
| key: page2Key, |
| child: const Text('Page 2'), |
| ); |
| }, |
| }, |
| ), |
| ); |
| |
| final Offset widget1InitialTopLeft = tester.getTopLeft(find.text('Page 1')); |
| |
| tester.state<NavigatorState>(find.byType(Navigator)).pushNamed('/next'); |
| |
| await tester.pump(); |
| await tester.pump(const Duration(milliseconds: 150)); |
| |
| Offset widget1TransientTopLeft = tester.getTopLeft(find.text('Page 1')); |
| Offset widget2TopLeft = tester.getTopLeft(find.text('Page 2')); |
| final RenderDecoratedBox box = tester.element(find.byKey(page2Key)) |
| .findAncestorRenderObjectOfType<RenderDecoratedBox>(); |
| |
| // Page 1 is moving to the left. |
| expect(widget1TransientTopLeft.dx < widget1InitialTopLeft.dx, true); |
| // Page 1 isn't moving vertically. |
| expect(widget1TransientTopLeft.dy == widget1InitialTopLeft.dy, true); |
| // iOS transition is horizontal only. |
| expect(widget1InitialTopLeft.dy == widget2TopLeft.dy, true); |
| // Page 2 is coming in from the right. |
| expect(widget2TopLeft.dx > widget1InitialTopLeft.dx, true); |
| // The shadow should be drawn to one screen width to the left of where |
| // the page 2 box is. `paints` tests relative to the painter's given canvas |
| // rather than relative to the screen so assert that it's one screen |
| // width to the left of 0 offset box rect and nothing is drawn inside the |
| // box's rect. |
| expect(box, paints..rect( |
| rect: const Rect.fromLTWH(-800.0, 0.0, 800.0, 600.0) |
| )); |
| |
| await tester.pumpAndSettle(); |
| |
| // Page 2 covers page 1. |
| expect(find.text('Page 1'), findsNothing); |
| expect(find.text('Page 2'), isOnstage); |
| |
| tester.state<NavigatorState>(find.byType(Navigator)).pop(); |
| await tester.pump(); |
| await tester.pump(const Duration(milliseconds: 100)); |
| |
| widget1TransientTopLeft = tester.getTopLeft(find.text('Page 1')); |
| widget2TopLeft = tester.getTopLeft(find.text('Page 2')); |
| |
| // Page 1 is coming back from the left. |
| expect(widget1TransientTopLeft.dx < widget1InitialTopLeft.dx, true); |
| // Page 1 isn't moving vertically. |
| expect(widget1TransientTopLeft.dy == widget1InitialTopLeft.dy, true); |
| // iOS transition is horizontal only. |
| expect(widget1InitialTopLeft.dy == widget2TopLeft.dy, true); |
| // Page 2 is leaving towards the right. |
| expect(widget2TopLeft.dx > widget1InitialTopLeft.dx, true); |
| |
| await tester.pumpAndSettle(); |
| |
| expect(find.text('Page 1'), isOnstage); |
| expect(find.text('Page 2'), findsNothing); |
| |
| widget1TransientTopLeft = tester.getTopLeft(find.text('Page 1')); |
| |
| // Page 1 is back where it started. |
| expect(widget1InitialTopLeft == widget1TransientTopLeft, true); |
| }, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS, TargetPlatform.macOS })); |
| |
| testWidgets('test fullscreen dialog transition', (WidgetTester tester) async { |
| await tester.pumpWidget( |
| const MaterialApp( |
| home: Material(child: Text('Page 1')), |
| ), |
| ); |
| |
| final Offset widget1InitialTopLeft = tester.getTopLeft(find.text('Page 1')); |
| |
| tester.state<NavigatorState>(find.byType(Navigator)).push(MaterialPageRoute<void>( |
| builder: (BuildContext context) { |
| return const Material(child: Text('Page 2')); |
| }, |
| fullscreenDialog: true, |
| )); |
| |
| await tester.pump(); |
| await tester.pump(const Duration(milliseconds: 100)); |
| |
| Offset widget1TransientTopLeft = tester.getTopLeft(find.text('Page 1')); |
| Offset widget2TopLeft = tester.getTopLeft(find.text('Page 2')); |
| |
| // Page 1 doesn't move. |
| expect(widget1TransientTopLeft == widget1InitialTopLeft, true); |
| // Fullscreen dialogs transitions vertically only. |
| expect(widget1InitialTopLeft.dx == widget2TopLeft.dx, true); |
| // Page 2 is coming in from the bottom. |
| expect(widget2TopLeft.dy > widget1InitialTopLeft.dy, true); |
| |
| await tester.pumpAndSettle(); |
| |
| // Page 2 covers page 1. |
| expect(find.text('Page 1'), findsNothing); |
| expect(find.text('Page 2'), isOnstage); |
| |
| tester.state<NavigatorState>(find.byType(Navigator)).pop(); |
| await tester.pump(); |
| await tester.pump(const Duration(milliseconds: 100)); |
| |
| widget1TransientTopLeft = tester.getTopLeft(find.text('Page 1')); |
| widget2TopLeft = tester.getTopLeft(find.text('Page 2')); |
| |
| // Page 1 doesn't move. |
| expect(widget1TransientTopLeft == widget1InitialTopLeft, true); |
| // Fullscreen dialogs transitions vertically only. |
| expect(widget1InitialTopLeft.dx == widget2TopLeft.dx, true); |
| // Page 2 is leaving towards the bottom. |
| expect(widget2TopLeft.dy > widget1InitialTopLeft.dy, true); |
| |
| await tester.pumpAndSettle(); |
| |
| expect(find.text('Page 1'), isOnstage); |
| expect(find.text('Page 2'), findsNothing); |
| |
| widget1TransientTopLeft = tester.getTopLeft(find.text('Page 1')); |
| |
| // Page 1 is back where it started. |
| expect(widget1InitialTopLeft == widget1TransientTopLeft, true); |
| }, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS, TargetPlatform.macOS })); |
| |
| testWidgets('test no back gesture on Android', (WidgetTester tester) async { |
| await tester.pumpWidget( |
| MaterialApp( |
| home: const Scaffold(body: Text('Page 1')), |
| routes: <String, WidgetBuilder>{ |
| '/next': (BuildContext context) { |
| return const Scaffold(body: Text('Page 2')); |
| }, |
| }, |
| ), |
| ); |
| |
| tester.state<NavigatorState>(find.byType(Navigator)).pushNamed('/next'); |
| await tester.pumpAndSettle(); |
| |
| expect(find.text('Page 1'), findsNothing); |
| expect(find.text('Page 2'), isOnstage); |
| |
| // Drag from left edge to invoke the gesture. |
| final TestGesture gesture = await tester.startGesture(const Offset(5.0, 100.0)); |
| await gesture.moveBy(const Offset(400.0, 0.0)); |
| await tester.pump(); |
| |
| expect(find.text('Page 1'), findsNothing); |
| expect(find.text('Page 2'), isOnstage); |
| |
| // Page 2 didn't move |
| expect(tester.getTopLeft(find.text('Page 2')), Offset.zero); |
| }, variant: TargetPlatformVariant.only(TargetPlatform.android)); |
| |
| testWidgets('test back gesture', (WidgetTester tester) async { |
| await tester.pumpWidget( |
| MaterialApp( |
| home: const Scaffold(body: Text('Page 1')), |
| routes: <String, WidgetBuilder>{ |
| '/next': (BuildContext context) { |
| return const Scaffold(body: Text('Page 2')); |
| }, |
| }, |
| ), |
| ); |
| |
| tester.state<NavigatorState>(find.byType(Navigator)).pushNamed('/next'); |
| await tester.pumpAndSettle(); |
| |
| expect(find.text('Page 1'), findsNothing); |
| expect(find.text('Page 2'), isOnstage); |
| |
| // Drag from left edge to invoke the gesture. |
| final TestGesture gesture = await tester.startGesture(const Offset(5.0, 100.0)); |
| await gesture.moveBy(const Offset(400.0, 0.0)); |
| await tester.pump(); |
| |
| // Page 1 is now visible. |
| expect(find.text('Page 1'), isOnstage); |
| expect(find.text('Page 2'), isOnstage); |
| |
| // The route widget position needs to track the finger position very exactly. |
| expect(tester.getTopLeft(find.text('Page 2')), const Offset(400.0, 0.0)); |
| |
| await gesture.moveBy(const Offset(-200.0, 0.0)); |
| await tester.pump(); |
| |
| expect(tester.getTopLeft(find.text('Page 2')), const Offset(200.0, 0.0)); |
| |
| await gesture.moveBy(const Offset(-100.0, 200.0)); |
| await tester.pump(); |
| |
| expect(tester.getTopLeft(find.text('Page 2')), const Offset(100.0, 0.0)); |
| }, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS, TargetPlatform.macOS })); |
| |
| testWidgets('back gesture while OS changes', (WidgetTester tester) async { |
| final Map<String, WidgetBuilder> routes = <String, WidgetBuilder>{ |
| '/': (BuildContext context) => Material( |
| child: TextButton( |
| child: const Text('PUSH'), |
| onPressed: () { Navigator.of(context).pushNamed('/b'); }, |
| ), |
| ), |
| '/b': (BuildContext context) => Container(child: const Text('HELLO')), |
| }; |
| await tester.pumpWidget( |
| MaterialApp( |
| theme: ThemeData(platform: TargetPlatform.iOS), |
| routes: routes, |
| ), |
| ); |
| await tester.tap(find.text('PUSH')); |
| expect(await tester.pumpAndSettle(const Duration(minutes: 1)), 2); |
| expect(find.text('PUSH'), findsNothing); |
| expect(find.text('HELLO'), findsOneWidget); |
| final Offset helloPosition1 = tester.getCenter(find.text('HELLO')); |
| final TestGesture gesture = await tester.startGesture(const Offset(2.5, 300.0)); |
| await tester.pump(const Duration(milliseconds: 20)); |
| await gesture.moveBy(const Offset(100.0, 0.0)); |
| expect(find.text('PUSH'), findsNothing); |
| expect(find.text('HELLO'), findsOneWidget); |
| await tester.pump(const Duration(milliseconds: 20)); |
| expect(find.text('PUSH'), findsOneWidget); |
| expect(find.text('HELLO'), findsOneWidget); |
| final Offset helloPosition2 = tester.getCenter(find.text('HELLO')); |
| expect(helloPosition1.dx, lessThan(helloPosition2.dx)); |
| expect(helloPosition1.dy, helloPosition2.dy); |
| expect(Theme.of(tester.element(find.text('HELLO'))).platform, TargetPlatform.iOS); |
| await tester.pumpWidget( |
| MaterialApp( |
| theme: ThemeData(platform: TargetPlatform.android), |
| routes: routes, |
| ), |
| ); |
| // Now we have to let the theme animation run through. |
| // This takes three frames (including the first one above): |
| // 1. Start the Theme animation. It's at t=0 so everything else is identical. |
| // 2. Start any animations that are informed by the Theme, for example, the |
| // DefaultTextStyle, on the first frame that the theme is not at t=0. In |
| // this case, it's at t=1.0 of the theme animation, so this is also the |
| // frame in which the theme animation ends. |
| // 3. End all the other animations. |
| expect(await tester.pumpAndSettle(const Duration(minutes: 1)), 2); |
| expect(Theme.of(tester.element(find.text('HELLO'))).platform, TargetPlatform.android); |
| final Offset helloPosition3 = tester.getCenter(find.text('HELLO')); |
| expect(helloPosition3, helloPosition2); |
| expect(find.text('PUSH'), findsOneWidget); |
| expect(find.text('HELLO'), findsOneWidget); |
| await gesture.moveBy(const Offset(100.0, 0.0)); |
| await tester.pump(const Duration(milliseconds: 20)); |
| expect(find.text('PUSH'), findsOneWidget); |
| expect(find.text('HELLO'), findsOneWidget); |
| final Offset helloPosition4 = tester.getCenter(find.text('HELLO')); |
| expect(helloPosition3.dx, lessThan(helloPosition4.dx)); |
| expect(helloPosition3.dy, helloPosition4.dy); |
| await gesture.moveBy(const Offset(500.0, 0.0)); |
| await gesture.up(); |
| expect(await tester.pumpAndSettle(const Duration(minutes: 1)), 3); |
| expect(find.text('PUSH'), findsOneWidget); |
| expect(find.text('HELLO'), findsNothing); |
| |
| await tester.pumpWidget( |
| MaterialApp( |
| theme: ThemeData(platform: TargetPlatform.macOS), |
| routes: routes, |
| ), |
| ); |
| await tester.tap(find.text('PUSH')); |
| expect(await tester.pumpAndSettle(const Duration(minutes: 1)), 2); |
| expect(find.text('PUSH'), findsNothing); |
| expect(find.text('HELLO'), findsOneWidget); |
| final Offset helloPosition5 = tester.getCenter(find.text('HELLO')); |
| await gesture.down(const Offset(2.5, 300.0)); |
| await tester.pump(const Duration(milliseconds: 20)); |
| await gesture.moveBy(const Offset(100.0, 0.0)); |
| expect(find.text('PUSH'), findsNothing); |
| expect(find.text('HELLO'), findsOneWidget); |
| await tester.pump(const Duration(milliseconds: 20)); |
| expect(find.text('PUSH'), findsOneWidget); |
| expect(find.text('HELLO'), findsOneWidget); |
| final Offset helloPosition6 = tester.getCenter(find.text('HELLO')); |
| expect(helloPosition5.dx, lessThan(helloPosition6.dx)); |
| expect(helloPosition5.dy, helloPosition6.dy); |
| expect(Theme.of(tester.element(find.text('HELLO'))).platform, TargetPlatform.macOS); |
| }); |
| |
| testWidgets('test no back gesture on fullscreen dialogs', (WidgetTester tester) async { |
| await tester.pumpWidget( |
| const MaterialApp( |
| home: Scaffold(body: Text('Page 1')), |
| ), |
| ); |
| |
| tester.state<NavigatorState>(find.byType(Navigator)).push(MaterialPageRoute<void>( |
| builder: (BuildContext context) { |
| return const Scaffold(body: Text('Page 2')); |
| }, |
| fullscreenDialog: true, |
| )); |
| await tester.pumpAndSettle(); |
| |
| expect(find.text('Page 1'), findsNothing); |
| expect(find.text('Page 2'), isOnstage); |
| |
| // Drag from left edge to invoke the gesture. |
| final TestGesture gesture = await tester.startGesture(const Offset(5.0, 100.0)); |
| await gesture.moveBy(const Offset(400.0, 0.0)); |
| await tester.pump(); |
| |
| expect(find.text('Page 1'), findsNothing); |
| expect(find.text('Page 2'), isOnstage); |
| |
| // Page 2 didn't move |
| expect(tester.getTopLeft(find.text('Page 2')), Offset.zero); |
| }, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS, TargetPlatform.macOS })); |
| |
| testWidgets('test adaptable transitions switch during execution', (WidgetTester tester) async { |
| await tester.pumpWidget( |
| MaterialApp( |
| theme: ThemeData( |
| platform: TargetPlatform.android, |
| pageTransitionsTheme: const PageTransitionsTheme( |
| builders: <TargetPlatform, PageTransitionsBuilder>{ |
| TargetPlatform.android: FadeUpwardsPageTransitionsBuilder(), |
| }, |
| ), |
| ), |
| home: const Material(child: Text('Page 1')), |
| routes: <String, WidgetBuilder>{ |
| '/next': (BuildContext context) { |
| return const Material(child: Text('Page 2')); |
| }, |
| }, |
| ), |
| ); |
| |
| final Offset widget1InitialTopLeft = tester.getTopLeft(find.text('Page 1')); |
| |
| tester.state<NavigatorState>(find.byType(Navigator)).pushNamed('/next'); |
| await tester.pump(); |
| await tester.pump(const Duration(milliseconds: 100)); |
| |
| Offset widget2TopLeft = tester.getTopLeft(find.text('Page 2')); |
| final Size widget2Size = tester.getSize(find.text('Page 2')); |
| |
| // Android transition is vertical only. |
| expect(widget1InitialTopLeft.dx == widget2TopLeft.dx, true); |
| // Page 1 is above page 2 mid-transition. |
| expect(widget1InitialTopLeft.dy < widget2TopLeft.dy, true); |
| // Animation begins from the top of the page. |
| expect(widget2TopLeft.dy < widget2Size.height, true); |
| |
| await tester.pump(const Duration(milliseconds: 300)); |
| |
| // Page 2 covers page 1. |
| expect(find.text('Page 1'), findsNothing); |
| expect(find.text('Page 2'), isOnstage); |
| |
| // Re-pump the same app but with iOS instead of Android. |
| await tester.pumpWidget( |
| MaterialApp( |
| home: const Material(child: Text('Page 1')), |
| routes: <String, WidgetBuilder>{ |
| '/next': (BuildContext context) { |
| return const Material(child: Text('Page 2')); |
| }, |
| }, |
| ), |
| ); |
| |
| tester.state<NavigatorState>(find.byType(Navigator)).pop(); |
| await tester.pump(); |
| await tester.pump(const Duration(milliseconds: 100)); |
| |
| Offset widget1TransientTopLeft = tester.getTopLeft(find.text('Page 1')); |
| widget2TopLeft = tester.getTopLeft(find.text('Page 2')); |
| |
| // Page 1 is coming back from the left. |
| expect(widget1TransientTopLeft.dx < widget1InitialTopLeft.dx, true); |
| // Page 1 isn't moving vertically. |
| expect(widget1TransientTopLeft.dy == widget1InitialTopLeft.dy, true); |
| // iOS transition is horizontal only. |
| expect(widget1InitialTopLeft.dy == widget2TopLeft.dy, true); |
| // Page 2 is leaving towards the right. |
| expect(widget2TopLeft.dx > widget1InitialTopLeft.dx, true); |
| |
| await tester.pump(const Duration(milliseconds: 300)); |
| |
| expect(find.text('Page 1'), isOnstage); |
| expect(find.text('Page 2'), findsNothing); |
| |
| widget1TransientTopLeft = tester.getTopLeft(find.text('Page 1')); |
| |
| // Page 1 is back where it started. |
| expect(widget1InitialTopLeft == widget1TransientTopLeft, true); |
| }, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS, TargetPlatform.macOS })); |
| |
| testWidgets('throws when builder returns null', (WidgetTester tester) async { |
| await tester.pumpWidget(const MaterialApp( |
| home: Text('Home'), |
| )); |
| // No exceptions yet. |
| expect(tester.takeException(), isNull); |
| |
| tester |
| .state<NavigatorState>(find.byType(Navigator)) |
| .push(MaterialPageRoute<void>( |
| settings: const RouteSettings(name: 'broken'), |
| builder: (BuildContext context) => null, |
| )); |
| await tester.pumpAndSettle(); |
| // An exception should've been thrown because the `builder` returned null. |
| final dynamic exception = tester.takeException(); |
| expect(exception, isFlutterError); |
| expect(exception.toStringDeep(), equalsIgnoringHashCodes( |
| 'FlutterError\n' |
| ' The builder for route "broken" returned null.\n' |
| ' Route builders must never return null.\n' |
| )); |
| }); |
| |
| testWidgets('test edge swipe then drop back at starting point works', (WidgetTester tester) async { |
| await tester.pumpWidget( |
| MaterialApp( |
| onGenerateRoute: (RouteSettings settings) { |
| return MaterialPageRoute<void>( |
| settings: settings, |
| builder: (BuildContext context) { |
| final String pageNumber = settings.name == '/' ? '1' : '2'; |
| return Center(child: Text('Page $pageNumber')); |
| }, |
| ); |
| }, |
| ), |
| ); |
| |
| tester.state<NavigatorState>(find.byType(Navigator)).pushNamed('/next'); |
| |
| await tester.pump(); |
| await tester.pump(const Duration(seconds: 1)); |
| |
| expect(find.text('Page 1'), findsNothing); |
| expect(find.text('Page 2'), isOnstage); |
| |
| final TestGesture gesture = await tester.startGesture(const Offset(5, 200)); |
| await gesture.moveBy(const Offset(300, 0)); |
| await tester.pump(); |
| // Bring it exactly back such that there's nothing to animate when releasing. |
| await gesture.moveBy(const Offset(-300, 0)); |
| await gesture.up(); |
| await tester.pump(); |
| |
| expect(find.text('Page 1'), findsNothing); |
| expect(find.text('Page 2'), isOnstage); |
| }, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS, TargetPlatform.macOS })); |
| |
| testWidgets('test edge swipe then drop back at ending point works', (WidgetTester tester) async { |
| await tester.pumpWidget( |
| MaterialApp( |
| onGenerateRoute: (RouteSettings settings) { |
| return MaterialPageRoute<void>( |
| settings: settings, |
| builder: (BuildContext context) { |
| final String pageNumber = settings.name == '/' ? '1' : '2'; |
| return Center(child: Text('Page $pageNumber')); |
| }, |
| ); |
| }, |
| ), |
| ); |
| |
| tester.state<NavigatorState>(find.byType(Navigator)).pushNamed('/next'); |
| |
| await tester.pump(); |
| await tester.pump(const Duration(seconds: 1)); |
| |
| expect(find.text('Page 1'), findsNothing); |
| expect(find.text('Page 2'), isOnstage); |
| |
| final TestGesture gesture = await tester.startGesture(const Offset(5, 200)); |
| // The width of the page. |
| await gesture.moveBy(const Offset(800, 0)); |
| await gesture.up(); |
| await tester.pump(); |
| |
| expect(find.text('Page 1'), isOnstage); |
| expect(find.text('Page 2'), findsNothing); |
| }, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS, TargetPlatform.macOS })); |
| |
| testWidgets('Back swipe dismiss interrupted by route push', (WidgetTester tester) async { |
| // Regression test for https://github.com/flutter/flutter/issues/28728 |
| final GlobalKey scaffoldKey = GlobalKey(); |
| |
| await tester.pumpWidget( |
| MaterialApp( |
| home: Scaffold( |
| key: scaffoldKey, |
| body: Center( |
| child: ElevatedButton( |
| onPressed: () { |
| Navigator.push<void>(scaffoldKey.currentContext, MaterialPageRoute<void>( |
| builder: (BuildContext context) { |
| return const Scaffold( |
| body: Center(child: Text('route')), |
| ); |
| }, |
| )); |
| }, |
| child: const Text('push'), |
| ), |
| ), |
| ), |
| ), |
| ); |
| |
| // Check the basic iOS back-swipe dismiss transition. Dragging the pushed |
| // route halfway across the screen will trigger the iOS dismiss animation |
| |
| await tester.tap(find.text('push')); |
| await tester.pumpAndSettle(); |
| expect(find.text('route'), findsOneWidget); |
| expect(find.text('push'), findsNothing); |
| |
| TestGesture gesture = await tester.startGesture(const Offset(5, 300)); |
| await gesture.moveBy(const Offset(400, 0)); |
| await gesture.up(); |
| await tester.pump(); |
| expect( // The 'route' route has been dragged to the right, halfway across the screen |
| tester.getTopLeft(find.ancestor(of: find.text('route'), matching: find.byType(Scaffold))), |
| const Offset(400, 0), |
| ); |
| expect( // The 'push' route is sliding in from the left. |
| tester.getTopLeft(find.ancestor(of: find.text('push'), matching: find.byType(Scaffold))).dx, |
| lessThan(0), |
| ); |
| await tester.pumpAndSettle(); |
| expect(find.text('push'), findsOneWidget); |
| expect( |
| tester.getTopLeft(find.ancestor(of: find.text('push'), matching: find.byType(Scaffold))), |
| Offset.zero, |
| ); |
| expect(find.text('route'), findsNothing); |
| |
| |
| // Run the dismiss animation 60%, which exposes the route "push" button, |
| // and then press the button. A drag dropped animation is 400ms when dropped |
| // exactly halfway. It follows a curve that is very steep initially. |
| |
| await tester.tap(find.text('push')); |
| await tester.pumpAndSettle(); |
| expect(find.text('route'), findsOneWidget); |
| expect(find.text('push'), findsNothing); |
| |
| gesture = await tester.startGesture(const Offset(5, 300)); |
| await gesture.moveBy(const Offset(400, 0)); // Drag halfway. |
| await gesture.up(); |
| await tester.pump(); // Trigger the dropped snapping animation. |
| expect( |
| tester.getTopLeft(find.ancestor(of: find.text('route'), matching: find.byType(Scaffold))), |
| const Offset(400, 0), |
| ); |
| // Let the dismissing snapping animation go 60%. |
| await tester.pump(const Duration(milliseconds: 240)); |
| expect( |
| tester.getTopLeft(find.ancestor(of: find.text('route'), matching: find.byType(Scaffold))).dx, |
| moreOrLessEquals(798, epsilon: 1), |
| ); |
| |
| // Use the navigator to push a route instead of tapping the 'push' button. |
| // The topmost route (the one that's animating away), ignores input while |
| // the pop is underway because route.navigator.userGestureInProgress. |
| Navigator.push<void>(scaffoldKey.currentContext, MaterialPageRoute<void>( |
| builder: (BuildContext context) { |
| return const Scaffold( |
| body: Center(child: Text('route')), |
| ); |
| }, |
| )); |
| |
| await tester.pumpAndSettle(); |
| expect(find.text('route'), findsOneWidget); |
| expect(find.text('push'), findsNothing); |
| }, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS, TargetPlatform.macOS })); |
| |
| testWidgets('During back swipe the route ignores input', (WidgetTester tester) async { |
| // Regression test for https://github.com/flutter/flutter/issues/39989 |
| |
| final GlobalKey homeScaffoldKey = GlobalKey(); |
| final GlobalKey pageScaffoldKey = GlobalKey(); |
| int homeTapCount = 0; |
| int pageTapCount = 0; |
| |
| await tester.pumpWidget( |
| MaterialApp( |
| home: Scaffold( |
| key: homeScaffoldKey, |
| body: GestureDetector( |
| onTap: () { |
| homeTapCount += 1; |
| } |
| ), |
| ), |
| ), |
| ); |
| |
| await tester.tap(find.byKey(homeScaffoldKey)); |
| expect(homeTapCount, 1); |
| expect(pageTapCount, 0); |
| |
| Navigator.push<void>(homeScaffoldKey.currentContext, MaterialPageRoute<void>( |
| builder: (BuildContext context) { |
| return Scaffold( |
| key: pageScaffoldKey, |
| appBar: AppBar(title: const Text('Page')), |
| body: Padding( |
| padding: const EdgeInsets.all(16), |
| child: GestureDetector( |
| onTap: () { |
| pageTapCount += 1; |
| } |
| ), |
| ), |
| ); |
| }, |
| )); |
| |
| await tester.pumpAndSettle(); |
| await tester.tap(find.byKey(pageScaffoldKey)); |
| expect(homeTapCount, 1); |
| expect(pageTapCount, 1); |
| |
| // Start the basic iOS back-swipe dismiss transition. Drag the pushed |
| // "page" route halfway across the screen. The underlying "home" will |
| // start sliding in from the left. |
| |
| final TestGesture gesture = await tester.startGesture(const Offset(5, 300)); |
| await gesture.moveBy(const Offset(400, 0)); |
| await tester.pump(); |
| expect(tester.getTopLeft(find.byKey(pageScaffoldKey)), const Offset(400, 0)); |
| expect(tester.getTopLeft(find.byKey(homeScaffoldKey)).dx, lessThan(0)); |
| |
| // Tapping on the "page" route doesn't trigger the GestureDetector because |
| // it's being dragged. |
| await tester.tap(find.byKey(pageScaffoldKey)); |
| expect(homeTapCount, 1); |
| expect(pageTapCount, 1); |
| |
| // Tapping the "page" route's back button doesn't do anything either. |
| await tester.tap(find.byTooltip('Back')); |
| await tester.pumpAndSettle(); |
| expect(tester.getTopLeft(find.byKey(pageScaffoldKey)), const Offset(400, 0)); |
| expect(tester.getTopLeft(find.byKey(homeScaffoldKey)).dx, lessThan(0)); |
| }, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS, TargetPlatform.macOS })); |
| |
| testWidgets('After a pop caused by a back-swipe, input reaches the exposed route', (WidgetTester tester) async { |
| // Regression test for https://github.com/flutter/flutter/issues/41024 |
| |
| final GlobalKey homeScaffoldKey = GlobalKey(); |
| final GlobalKey pageScaffoldKey = GlobalKey(); |
| int homeTapCount = 0; |
| int pageTapCount = 0; |
| |
| await tester.pumpWidget( |
| MaterialApp( |
| home: Scaffold( |
| key: homeScaffoldKey, |
| body: GestureDetector( |
| onTap: () { |
| homeTapCount += 1; |
| } |
| ), |
| ), |
| ), |
| ); |
| |
| await tester.tap(find.byKey(homeScaffoldKey)); |
| expect(homeTapCount, 1); |
| expect(pageTapCount, 0); |
| |
| final ValueNotifier<bool> notifier = Navigator.of(homeScaffoldKey.currentContext).userGestureInProgressNotifier; |
| expect(notifier.value, false); |
| |
| Navigator.push<void>(homeScaffoldKey.currentContext, MaterialPageRoute<void>( |
| builder: (BuildContext context) { |
| return Scaffold( |
| key: pageScaffoldKey, |
| appBar: AppBar(title: const Text('Page')), |
| body: Padding( |
| padding: const EdgeInsets.all(16), |
| child: GestureDetector( |
| onTap: () { |
| pageTapCount += 1; |
| } |
| ), |
| ), |
| ); |
| }, |
| )); |
| |
| await tester.pumpAndSettle(); |
| await tester.tap(find.byKey(pageScaffoldKey)); |
| expect(homeTapCount, 1); |
| expect(pageTapCount, 1); |
| |
| // Trigger the basic iOS back-swipe dismiss transition. Drag the pushed |
| // "page" route more than halfway across the screen and then release it. |
| |
| final TestGesture gesture = await tester.startGesture(const Offset(5, 300)); |
| await gesture.moveBy(const Offset(500, 0)); |
| await tester.pump(); |
| expect(tester.getTopLeft(find.byKey(pageScaffoldKey)), const Offset(500, 0)); |
| expect(tester.getTopLeft(find.byKey(homeScaffoldKey)).dx, lessThan(0)); |
| expect(notifier.value, true); |
| await gesture.up(); |
| await tester.pumpAndSettle(); |
| expect(notifier.value, false); |
| expect(find.byKey(pageScaffoldKey), findsNothing); |
| |
| // The back-swipe dismiss pop transition has finished and input on the |
| // home page still works. |
| await tester.tap(find.byKey(homeScaffoldKey)); |
| expect(homeTapCount, 2); |
| expect(pageTapCount, 1); |
| }, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS, TargetPlatform.macOS })); |
| |
| testWidgets('A MaterialPageRoute should slide out with CupertinoPageTransition when a compatible PageRoute is pushed on top of it', (WidgetTester tester) async { |
| // Regression test for https://github.com/flutter/flutter/issues/44864. |
| |
| await tester.pumpWidget( |
| MaterialApp( |
| theme: ThemeData(platform: TargetPlatform.iOS), |
| home: Scaffold( |
| appBar: AppBar(title: const Text('Title')), |
| ), |
| ), |
| ); |
| |
| final Offset titleInitialTopLeft = tester.getTopLeft(find.text('Title')); |
| |
| tester.state<NavigatorState>(find.byType(Navigator)).push<void>( |
| CupertinoPageRoute<void>(builder: (BuildContext context) => const Placeholder()), |
| ); |
| |
| await tester.pump(); |
| await tester.pump(const Duration(milliseconds: 150)); |
| |
| final Offset titleTransientTopLeft = tester.getTopLeft(find.text('Title')); |
| |
| // Title of the first route slides to the left. |
| expect(titleInitialTopLeft.dy, equals(titleTransientTopLeft.dy)); |
| expect(titleInitialTopLeft.dx, greaterThan(titleTransientTopLeft.dx)); |
| }, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS, TargetPlatform.macOS })); |
| |
| testWidgets('MaterialPage works', (WidgetTester tester) async { |
| final LocalKey pageKey = UniqueKey(); |
| final TransitionDetector detector = TransitionDetector(); |
| List<Page<void>> myPages = <Page<void>>[ |
| MaterialPage<void>(key: pageKey, child: const Text('first')), |
| ]; |
| await tester.pumpWidget( |
| buildNavigator( |
| pages: myPages, |
| onPopPage: (Route<dynamic> route, dynamic result) => null, |
| transitionDelegate: detector, |
| ) |
| ); |
| |
| expect(detector.hasTransition, isFalse); |
| expect(find.text('first'), findsOneWidget); |
| |
| myPages = <Page<void>>[ |
| MaterialPage<void>(key: pageKey, child: const Text('second')), |
| ]; |
| |
| await tester.pumpWidget( |
| buildNavigator( |
| pages: myPages, |
| onPopPage: (Route<dynamic> route, dynamic result) => null, |
| transitionDelegate: detector, |
| ) |
| ); |
| // There should be no transition because the page has the same key. |
| expect(detector.hasTransition, isFalse); |
| // The content does update. |
| expect(find.text('first'), findsNothing); |
| expect(find.text('second'), findsOneWidget); |
| }); |
| |
| testWidgets('MaterialPage can toggle MaintainState', (WidgetTester tester) async { |
| final LocalKey pageKeyOne = UniqueKey(); |
| final LocalKey pageKeyTwo = UniqueKey(); |
| final TransitionDetector detector = TransitionDetector(); |
| List<Page<void>> myPages = <Page<void>>[ |
| MaterialPage<void>(key: pageKeyOne, maintainState: false, child: const Text('first')), |
| MaterialPage<void>(key: pageKeyTwo, child: const Text('second')), |
| ]; |
| await tester.pumpWidget( |
| buildNavigator( |
| pages: myPages, |
| onPopPage: (Route<dynamic> route, dynamic result) => null, |
| transitionDelegate: detector, |
| ) |
| ); |
| |
| expect(detector.hasTransition, isFalse); |
| // Page one does not maintain state. |
| expect(find.text('first', skipOffstage: false), findsNothing); |
| expect(find.text('second'), findsOneWidget); |
| |
| myPages = <Page<void>>[ |
| MaterialPage<void>(key: pageKeyOne, maintainState: true, child: const Text('first')), |
| MaterialPage<void>(key: pageKeyTwo, child: const Text('second')), |
| ]; |
| |
| await tester.pumpWidget( |
| buildNavigator( |
| pages: myPages, |
| onPopPage: (Route<dynamic> route, dynamic result) => null, |
| transitionDelegate: detector, |
| ) |
| ); |
| // There should be no transition because the page has the same key. |
| expect(detector.hasTransition, isFalse); |
| // Page one sets the maintain state to be true, its widget tree should be |
| // built. |
| expect(find.text('first', skipOffstage: false), findsOneWidget); |
| expect(find.text('second'), findsOneWidget); |
| }); |
| |
| testWidgets('MaterialPage does not lose its state when transitioning out', (WidgetTester tester) async { |
| final GlobalKey<NavigatorState> navigator = GlobalKey<NavigatorState>(); |
| await tester.pumpWidget(KeepsStateTestWidget(navigatorKey: navigator)); |
| expect(find.text('subpage'), findsOneWidget); |
| expect(find.text('home'), findsNothing); |
| |
| navigator.currentState.pop(); |
| await tester.pump(); |
| |
| expect(find.text('subpage'), findsOneWidget); |
| expect(find.text('home'), findsOneWidget); |
| }); |
| } |
| |
| class TransitionDetector extends DefaultTransitionDelegate<void> { |
| bool hasTransition = false; |
| @override |
| Iterable<RouteTransitionRecord> resolve({ |
| List<RouteTransitionRecord> newPageRouteHistory, |
| Map<RouteTransitionRecord, RouteTransitionRecord> locationToExitingPageRoute, |
| Map<RouteTransitionRecord, List<RouteTransitionRecord>> pageRouteToPagelessRoutes |
| }) { |
| hasTransition = true; |
| return super.resolve( |
| newPageRouteHistory: newPageRouteHistory, |
| locationToExitingPageRoute: locationToExitingPageRoute, |
| pageRouteToPagelessRoutes: pageRouteToPagelessRoutes |
| ); |
| } |
| } |
| |
| Widget buildNavigator({ |
| List<Page<dynamic>> pages, |
| PopPageCallback onPopPage, |
| GlobalKey<NavigatorState> key, |
| TransitionDelegate<dynamic> transitionDelegate |
| }) { |
| return MediaQuery( |
| data: MediaQueryData.fromWindow(WidgetsBinding.instance.window), |
| child: Localizations( |
| locale: const Locale('en', 'US'), |
| delegates: const <LocalizationsDelegate<dynamic>>[ |
| DefaultMaterialLocalizations.delegate, |
| DefaultWidgetsLocalizations.delegate |
| ], |
| child: Directionality( |
| textDirection: TextDirection.ltr, |
| child: Navigator( |
| key: key, |
| pages: pages, |
| onPopPage: onPopPage, |
| transitionDelegate: transitionDelegate ?? const DefaultTransitionDelegate<dynamic>(), |
| ), |
| ), |
| ), |
| ); |
| } |
| |
| class KeepsStateTestWidget extends StatefulWidget { |
| const KeepsStateTestWidget({this.navigatorKey}); |
| |
| final Key navigatorKey; |
| |
| @override |
| State<KeepsStateTestWidget> createState() => _KeepsStateTestWidgetState(); |
| } |
| |
| class _KeepsStateTestWidgetState extends State<KeepsStateTestWidget> { |
| String _subpage = 'subpage'; |
| |
| @override |
| Widget build(BuildContext context) { |
| return MaterialApp( |
| home: Navigator( |
| key: widget.navigatorKey, |
| pages: <Page<void>>[ |
| const MaterialPage<void>(child: Text('home')), |
| if (_subpage != null) MaterialPage<void>(child: Text(_subpage)), |
| ], |
| onPopPage: (Route<dynamic> route, dynamic result) { |
| if (!route.didPop(result)) { |
| return false; |
| } |
| setState(() { |
| _subpage = null; |
| }); |
| return true; |
| }, |
| ), |
| ); |
| } |
| } |
