颤振测试MissingPluginException [英] Flutter Test MissingPluginException

问题描述

依赖SharedPreferences插件的运行测试始终会导致

Running tests which rely on the SharedPreferences Plugin always result in

MissingPluginException(No implementation found for method getAll on channel plugins.flutter.io/shared_preferences)

我的pubspec.yaml

My pubspec.yaml

dev_dependencies:
  flutter_test:
     sdk: flutter

dependencies:
  flutter:
     sdk: flutter
  shared_preferences: 0.2.3

该代码在应用程序本身中正常工作。
我是否缺少我需要做的某些事情才能运行使用插件的测试？

The code for works fine in the application itself. Am i missing something i need to do in order to run tests which make use of a plugin?

推荐答案

如果您使用的是shared_preferences 0.2.4及更高版本，请使用 setMockInitialValues ：

If you're using shared_preferences 0.2.4 and above, use setMockInitialValues:

SharedPreferences.setMockInitialValues({}); // set initial values here if desired

对于较早的版本，您可以手动进行操作：

For earlier versions you can do it manually:

const MethodChannel('plugins.flutter.io/shared_preferences')
  .setMockMethodCallHandler((MethodCall methodCall) async {
    if (methodCall.method == 'getAll') {
      return <String, dynamic>{}; // set initial values here if desired
    }
    return null;
  });

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