颤动中的提供者的单元测试 [英] Unit Testing for Providers in Flutter
本文介绍了颤动中的提供者的单元测试的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我们已经在TDD方法中启动了一个关于颤振的新项目。我正在使用国家管理的提供者。 在尝试编写Widget测试时,我们面临着测试提供者的问题。 您能举出一个例子来建议编写提供者的单元测试和Widget注入提供者的方法吗?
我遇到以下问题
══╡ EXCEPTION CAUGHT BY FLUTTER TEST FRAMEWORK ╞════════════════════════════════════
The following ProviderNotFoundException was thrown running a test:
Error: Could not find the correct Provider above this SplashScreen Widget
To fix, please:
Ensure the Provider is an ancestor to this SplashScreen Widget
Provide types to Provider
Provide types to Consumer
Provide types to Provider.of()
Always use package imports. Ex: `import 'package:my_app/my_code.dart';
Ensure the correct context is being used.
══╡闪屏代码╞════════════════════════════════════
import 'dart:async';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import '../../../routes.dart';
import '../../constants/constants.dart';
import '../../providers/provider.dart';
import '../../services/navigation_service.dart';
import '../../utils/utlis.dart';
class SplashScreen extends StatefulWidget {
@override
SplashScreenState createState() => SplashScreenState();
}
class SplashScreenState extends State {
void startTime() {
const _duration = Duration(seconds: Preferences.splashScreenTime);
Timer(_duration, _getInitialData);
_getInitialData();
}
dynamic _getInitialData() async {
final TokenProvider tokenProvider =
Provider.of(context, listen: false);
await tokenProvider.setAccessToken();
navigationPage();
}
void navigationPage() {
NavigationService.pushReplacementNamedTo(Routes.home_screen);
}
@override
void initState() {
super.initState();
startTime();
}
@override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Colors.white,
body: Stack(
key: const Key('splashScreen_body'),
fit: StackFit.expand,
children: [
Image.asset(
'assets/images/flutter.png',
key: const Key('splashScreen_image'),
)
],
),
);
}
}
提前感谢
推荐答案
您需要包装要在该小部件使用的提供程序中测试的小部件。
因此,您可以这样写:
await tester.pumpWidget(
Provider<TokenProvider>(
child: SplashScreen(),
),
);
这篇关于颤动中的提供者的单元测试的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
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