我一直在努力让Jest在没有太多运气的情况下参与我的react-native 项目.似乎大多数线程都是黑客破解的解决方案，用于启动和运行，而我似乎无法克服我面临的最后一个障碍.

问题

在try 运行下面的代码时，我遇到了以下错误.如果我在jestSupport/env中模仿react.js文件我可以克服这个错误，但显然我不能使用AsyncStorage之类的任何 struct 来实际测试我的代码(因为我只有模拟的功能).

问题

有人对如何解决这个问题有什么建议吗？

在这个阶段，我愿意try 任何事情，包括放弃所有与测试相关的东西，然后再试一次.如果是这样的话，我需要遵循一些指导原则，因为React原生文档关于jest已经过时了，而且我对React场景还比较陌生.

错误

Runtime 错误
错误: Cannot find module 'ReactNative' from 'react-native.js'
    at Runtime._resolveNodeModule (/Users/Yulfy/Downloads/COMPANY-Mobile/node_modules/jest-cli/src/Runtime/Runtime.js:451:11)
    at Object.<anonymous> (/Users/Yulfy/Downloads/COMPANY-Mobile/node_modules/react-native/Libraries/react-native/react-native.js:181:25)
    at Object.<anonymous> (/Users/Yulfy/Downloads/COMPANY-Mobile/network/connections.js:8:18)

测试代码

jest.unmock('../network/connections');

import Authorisation from '../network/connections';

describe('connections', () => {
  it('Should store and retrieve a mocked user object', () => {
    Auth = new Authorisation();
    const TEST_STRING = "CONNECTION TEST PASS";
    var userObj = {
      test_string: TEST_STRING
    };
    Auth._localStore(userObj, (storeRes) => {
      Auth._localRetrieve((retRes) => {
        expect(retRes.test_string).toEqual(TEST_STRING);
      });
    });
  });
});

联系js

/*
*  All returns should give the following structure:
*  {isSuccess: boolean, data: object}
*/


import React, { Component } from 'react';
import { AsyncStorage } from 'react-native';

const Firebase = require('firebase');
const FIREBASE_URL = 'https://COMPANY-test.firebaseio.com';
const STORAGE_KEY = 'USER_DATA';
class Authorisation{
  _ref = null;
  user = null;

  constructor(){

  }

  getOne(){return 1;}
  _setSystemUser(userObj, authObj, callback){
    var ref = this.connect();
    if(ref === null){
      callback({isSuccess:false, data:{message:"Could not connect to the server"}});
    }
    ref = ref.child('users').child(authObj.uid);
    ref.once("value", function(snapshot){
      if(snapshot.exists()){
        callback({isSuccess:false, data:{message:"Email is currently in use"}});
        return;
      }
      ref.set(userObj, function(error){
        if(error){
          callback({isSuccess:false, data:error});
        }else{
          callback({isSuccess:true, data:authObj});
        }
      });
    });
  }

  _localStore(userObj, callback){
    AsyncStorage.setItem(STORAGE_KEY, userObj, (error) => {
      console.log("_localStore::setItem -> ", error);
      if(error){
        callback({
          isSuccess:false,
          data:'Failed to store user object in storage.'
        });
      }else{
        callback({
          isSuccess:true,
          data: userObj
        });
      }
    });
  }
  _localRetrieve(callback){
    AsyncStorage.getItem(STORAGE_KEY, (error, res) => {
      console.log("_localStore::getItem:error -> ", error);
      console.log("_localStore::getItem:result -> ", res);
      if(error){
        callback({
          isSuccess:false,
          data:error
        });
      }else{
        callback({
          isSuccess: true,
          data: res
        });
      }
    });
  }

  connect(){
    if(this._ref === null){
      _ref = new Firebase(FIREBASE_URL);
    }
    return _ref;
  }

  getUser(){

  }

  isLoggedIn(){

  }

  registerUser(userObj, callback){
    var ref = this.connect();
    if(ref === null){
      callback({isSuccess:false, data:{message:"Could not connect to the server"}});
    }
    var that = this;
    ref.createUser({
      email: userObj.username,
      password: userObj.password
    }, function(error, userData){
      if(error){
        callback({isSuccess:false, data:error});
        return;
      }
      var parseObj = {
        email: userObj.username,
        fullName: userObj.fullName
      };
      that.loginUser(parseObj, function(res){
        if(res.isSuccess){
          that._setSystemUser(parseObj, res.data, callback);
        }else{
          callback(res);//Fail
        }
      });
    });
  }

  loginUser(userObj, callback){
    var ref = this.connect();
    if(ref === null){
      callback({isSuccess:false, data:{message:"Could not connect to the server"}});
    }
    ref.authWithPassword({
      email: userObj.email,
      password: userObj.password
    }, function(error, authData){
      if(error){
        callback({isSuccess:false, data:error.message});
      }else{
        callback({isSuccess:true, data:authData});
      }
    });

  }
}

export default Authorisation;

如果你已经读到这里，谢谢你的时间！

-尤菲