如何模拟第三方React Native NativeModules？

组件正在导入包含本机模块的库。这是一个人为的例子：

import React from 'react';
import { View } from 'react-native';
import { Answers } from 'react-native-fabric';

export default function MyTouchComponent({ params }) {
  return <View onPress={() => { Answers.logContentView() }} />
}

这是相关部分Answers from react-native-fabric:

var { NativeModules, Platform } = require('react-native');
var SMXAnswers = NativeModules.SMXAnswers;

在摩卡测试中导入此组件时，由于以下原因而失败SMXAnswers is undefined:

你怎么嘲笑SMXAnswers or react-native-fabric这样它就不会损坏并允许您测试您的组件？

p.s.：你可以看到完整设置 https://github.com/digisquare/mobile/blob/701cb8704e874864fbc13afd0325f008a5baad9e/test/setup.js和成分 https://github.com/digisquare/mobile/blob/701cb8704e874864fbc13afd0325f008a5baad9e/js/scenes/organizations/OrganizationsRow.js我正在尝试在 GitHub 上进行测试。

Use mockery模拟任何本机模块，如下所示：

import mockery from 'mockery';

mockery.enable();
mockery.warnOnUnregistered(false);
mockery.registerMock('react-native-fabric', {
  Crashlytics: {
    crash: () => {},
  },
});

这是一个完整的设置示例 https://github.com/digisquare/mobile/blob/f489ec8b28a91f84ebee38eda6278dc56c04fef4/test/setup.js:

import 'core-js/fn/object/values';
import 'react-native-mock/mock';

import mockery from 'mockery';
import fs from 'fs';
import path from 'path';
import register from 'babel-core/register';

mockery.enable();
mockery.warnOnUnregistered(false);
mockery.registerMock('react-native-fabric', {
  Crashlytics: {
    crash: () => {},
  },
});

const modulesToCompile = [
  'react-native',
].map((moduleName) => new RegExp(`/node_modules/${moduleName}`));

const rcPath = path.join(__dirname, '..', '.babelrc');
const source = fs.readFileSync(rcPath).toString();
const config = JSON.parse(source);

config.ignore = function(filename) {
  if (!(/\/node_modules\//).test(filename)) {
    return false;
  } else {
    const matches = modulesToCompile.filter((regex) => regex.test(filename));
    const shouldIgnore = matches.length === 0;
    return shouldIgnore;
  }
}

register(config);