标签: flutter-mockito

我正在为使用 video_player 插件的视频播放器小部件编写一个简单的测试。我无法模拟视频控制器发出的用于通过网络获取视频的网络请求。我的小部件代码如下所示：

late VideoPlayerController _videoController;

@override
void initState() {
    _videoController = VideoPlayerController.network(widget.videoUrl);
// rest of the code
}

和测试代码：

VideoPlayerController _videoController =
        VideoPlayerController.network(videoUrl);

    when(VideoPlayerController.network(videoUrl))
        .thenAnswer((_) => _videoController);

这不起作用，因为它无法正确地存根网络请求方法。有什么正确嘲笑它的想法吗？我的代码中还有其他几个测试，其中我模拟了发出网络请求的 api 客户端类，但这一个有点不同。我正在使用mockito进行嘲笑。

请帮忙！

I'm trying to mock sharedPreferences using Mockito in my flutter project. Here is the error log.

package:mockito/src/mock.dart 190:7                                                                       Mock._noSuchMethod
package:mockito/src/mock.dart 184:45                                                                      Mock.noSuchMethod
test\feature\number_trivia\data\datasource\number_trivia_local_datasource_test.mocks.dart 67:14           MockSharedPreferences.setString
package:clean_arch_tdd/features/number_trivia/data/datasources/number_trivia_local_datasource.dart 31:30  NumberTriviaLocalDataSourceImpl.cacheLastNumberTrivia
test\feature\number_trivia\data\datasource\number_trivia_local_datasource_test.dart 51:18                 main.<fn>.<fn>

MissingStubError: 'setString'
No stub was found which matches the arguments of this method call:
setString('CACHED_NUMBER_TRIVIA', '{"text":"Test trivia","number":1}')

Add a stub for this method using Mockito's 'when' API, or generate the mock for MockSharedPreferences with 'returnNullOnMissingStub: true'.

The error refer to this line of code.

local_data_source_test.dart

test('should call sharedPreferences to …