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我在编写测试时迟到了（我还在学习！），并且在我的应用程序上运行 jest 测试时已经遇到了一些问题。特别是，使用反应导航。

现在我在运行 npm test 时遇到了如下问题

不变违规：未设置 __fbBatchedBridgeConfig，无法调用本机模块

 at invariant (node_modules/invariant/invariant.js:40:15)
 at Object.invariant (node_modules/react-native/Libraries/BatchedBridge/NativeModules.js:162:3)
 at Object.require [as NativeModules] (node_modules/react-native/Libraries/react-native/react-native-implementation.js:322:12)
 at Object.NativeModules (node_modules/react-native-document-picker/index.js:3:30)

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我遇到了一些其他问题，这些问题已按照下面显示的代码解决，但会产生此消息。

我的 package.json 如下：

"jest": {
    "preset": "react-native",
    "transformIgnorePatterns": [
      "node_modules/(?!(jest-)?react-native|react-navigation|react-navigation-redux-helpers|@react-navigation/.*)"
    ],
    "setupFiles": [
      "./node_modules/react-native-gesture-handler/jestSetup.js"
    ],
    "transform": {
      "^.+\\.js$": "babel-jest"
    },
    "moduleNameMapper": {
      "\\.(jpg|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$": "./__mocks__/fileMock.js",
      "\\.(css|scss)$": "./__mocks__/styleMock.js"
    }

jsetSetup 看起来像这样：

jest.mock('react-native-gesture-handler', () => {
  const View = require('react-native/Libraries/Components/View/View');
  return {
    Swipeable: View,
    DrawerLayout: View,
    State: {},
    ScrollView: View,
    Slider: View,
    Switch: View,
    TextInput: View,
    ToolbarAndroid: View,
    ViewPagerAndroid: …