| // Copyright 2013 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. |
| |
| import 'package:flutter/material.dart'; |
| import 'package:flutter_test/flutter_test.dart'; |
| import 'package:go_router/go_router.dart'; |
| |
| void main() { |
| testWidgets('CustomTransitionPage builds its child using transitionsBuilder', |
| (WidgetTester tester) async { |
| const HomeScreen child = HomeScreen(); |
| final CustomTransitionPage<void> transition = CustomTransitionPage<void>( |
| transitionsBuilder: expectAsync4((_, __, ___, Widget child) => child), |
| child: child, |
| ); |
| final GoRouter router = GoRouter( |
| routes: <GoRoute>[ |
| GoRoute( |
| path: '/', |
| pageBuilder: (_, __) => transition, |
| ), |
| ], |
| ); |
| await tester.pumpWidget( |
| MaterialApp.router( |
| routeInformationParser: router.routeInformationParser, |
| routerDelegate: router.routerDelegate, |
| title: 'GoRouter Example', |
| ), |
| ); |
| expect(find.byWidget(child), findsOneWidget); |
| }); |
| |
| testWidgets('NoTransitionPage does not apply any transition', |
| (WidgetTester tester) async { |
| final ValueNotifier<bool> showHomeValueNotifier = |
| ValueNotifier<bool>(false); |
| await tester.pumpWidget( |
| MaterialApp( |
| home: ValueListenableBuilder<bool>( |
| valueListenable: showHomeValueNotifier, |
| builder: (_, bool showHome, __) { |
| return Navigator( |
| pages: <Page<void>>[ |
| const NoTransitionPage<void>( |
| child: LoginScreen(), |
| ), |
| if (showHome) |
| const NoTransitionPage<void>( |
| child: HomeScreen(), |
| ), |
| ], |
| onPopPage: (Route<dynamic> route, dynamic result) { |
| return route.didPop(result); |
| }, |
| ); |
| }, |
| ), |
| ), |
| ); |
| |
| final Finder homeScreenFinder = find.byType(HomeScreen); |
| |
| showHomeValueNotifier.value = true; |
| await tester.pump(); |
| final Offset homeScreenPositionInTheMiddleOfAddition = |
| tester.getTopLeft(homeScreenFinder); |
| await tester.pumpAndSettle(); |
| final Offset homeScreenPositionAfterAddition = |
| tester.getTopLeft(homeScreenFinder); |
| |
| showHomeValueNotifier.value = false; |
| await tester.pump(); |
| final Offset homeScreenPositionInTheMiddleOfRemoval = |
| tester.getTopLeft(homeScreenFinder); |
| await tester.pumpAndSettle(); |
| |
| expect( |
| homeScreenPositionInTheMiddleOfAddition, |
| homeScreenPositionAfterAddition, |
| ); |
| expect( |
| homeScreenPositionAfterAddition, |
| homeScreenPositionInTheMiddleOfRemoval, |
| ); |
| }); |
| } |
| |
| class HomeScreen extends StatelessWidget { |
| const HomeScreen({Key? key}) : super(key: key); |
| |
| @override |
| Widget build(BuildContext context) { |
| return const Scaffold( |
| body: Center( |
| child: Text('HomeScreen'), |
| ), |
| ); |
| } |
| } |
| |
| class LoginScreen extends StatelessWidget { |
| const LoginScreen({Key? key}) : super(key: key); |
| |
| @override |
| Widget build(BuildContext context) { |
| return const Scaffold( |
| body: Center( |
| child: Text('LoginScreen'), |
| ), |
| ); |
| } |
| } |