小编Fra*_*ein的帖子

我为我的反应应用程序提供了一个api,它工作正常,但突然它停止了工作.在我的客户端(React app)package.json

"proxy": "http://localhost:7000"

现在它告诉我这个错误消息:无法从localhost:3000代理请求/ api/users/signup到http:// localhost:7000.提前致谢.

我想测试我的组件,但是每个导出createFragmentContainer的组件都会向我显示这个问题:

console.error node_modules\react-native\Libraries\Core\ExceptionsManager.js:73
      Warning: Failed context type: Invalid prop/context `relay` supplied to `Relay(Product)`, expected `undefined` to be an object with an `environment` and `variables`.
          in Relay(Product)
    console.error node_modules\react-native\Libraries\Core\ExceptionsManager.js:73
      React caught an error thrown by Relay(Product). You should fix this error in your code. Consider adding an error boundary to your tree to customize error handling behavior.

      TypeError: Cannot read property 'environment' of undefined

      The error is located at:
          in Relay(Product)

那么jest支持片段容器还是问题在我的项目中？