| // 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'; |
| |
| void main() { |
| testWidgets('TickerMode', (WidgetTester tester) async { |
| const Widget widget = TickerMode( |
| enabled: false, |
| child: CircularProgressIndicator(), |
| ); |
| expect(widget.toString, isNot(throwsException)); |
| |
| await tester.pumpWidget(widget); |
| |
| expect(tester.binding.transientCallbackCount, 0); |
| |
| await tester.pumpWidget(const TickerMode( |
| enabled: true, |
| child: CircularProgressIndicator(), |
| )); |
| |
| expect(tester.binding.transientCallbackCount, 1); |
| |
| await tester.pumpWidget(const TickerMode( |
| enabled: false, |
| child: CircularProgressIndicator(), |
| )); |
| |
| expect(tester.binding.transientCallbackCount, 0); |
| }); |
| |
| testWidgets('Navigation with TickerMode', (WidgetTester tester) async { |
| await tester.pumpWidget(MaterialApp( |
| home: const LinearProgressIndicator(), |
| routes: <String, WidgetBuilder>{ |
| '/test': (BuildContext context) => const Text('hello'), |
| }, |
| )); |
| expect(tester.binding.transientCallbackCount, 1); |
| tester.state<NavigatorState>(find.byType(Navigator)).pushNamed('/test'); |
| expect(tester.binding.transientCallbackCount, 2); |
| await tester.pump(); |
| expect(tester.binding.transientCallbackCount, 2); |
| await tester.pump(const Duration(seconds: 5)); |
| expect(tester.binding.transientCallbackCount, 0); |
| tester.state<NavigatorState>(find.byType(Navigator)).pop(); |
| expect(tester.binding.transientCallbackCount, 1); |
| await tester.pump(); |
| expect(tester.binding.transientCallbackCount, 2); |
| await tester.pump(const Duration(seconds: 5)); |
| expect(tester.binding.transientCallbackCount, 1); |
| }); |
| |
| testWidgets('SingleTickerProviderStateMixin can handle not being used', (WidgetTester tester) async { |
| final Widget widget = BoringTickerTest(); |
| expect(widget.toString, isNot(throwsException)); |
| |
| await tester.pumpWidget(widget); |
| await tester.pumpWidget(Container()); |
| // the test is that this doesn't crash, like it used to... |
| }); |
| } |
| |
| class BoringTickerTest extends StatefulWidget { |
| @override |
| _BoringTickerTestState createState() => _BoringTickerTestState(); |
| } |
| |
| class _BoringTickerTestState extends State<BoringTickerTest> with SingleTickerProviderStateMixin { |
| @override |
| Widget build(BuildContext context) => Container(); |
| } |