Тестирование с использованием Jest реализации Redux-persist с асинхронным хранилищем - PullRequest
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Тестирование с использованием Jest реализации Redux-persist с асинхронным хранилищем

1 голос
/ 18 июня 2019

Я настроил redux-persist с помощью async-storage, но мои тесты Jest не срабатывают с ошибкой, которая относится к асинхронному коду. Ошибка загадочная, и я не могу найти причину. 

> app@0.0.1 test /Desktop/app
> jest --detectOpenHandles

ts-jest[main] (WARN) Replace any occurrences of "ts-jest/dist/preprocessor.js" or  "<rootDir>/node_modules/ts-jest/preprocessor.js" in the 'transform' section of your Jest config with just "ts-jest".

ReferenceError: You are trying to `import` a file after the Jest environment has been torn down.

      at Object.get BackHandler [as BackHandler] (node_modules/react-native/Libraries/react-native/react-native-implementation.js:222:12)
      at new NavigationContainer (node_modules/@react-navigation/native/dist/createAppContainer.js:190:35)
      at constructClassInstance (node_modules/react-test-renderer/cjs/react-test-renderer.development.js:2996:22)
      at updateClassComponent (node_modules/react-test-renderer/cjs/react-test-renderer.development.js:5896:9)
      at beginWork (node_modules/react-test-renderer/cjs/react-test-renderer.development.js:6674:20)
      at performUnitOfWork (node_modules/react-test-renderer/cjs/react-test-renderer.development.js:10041:16)

  ●  Cannot log after tests are done. Did you forget to wait for something async in your test?
    Attempted to log "The above error occurred in the <NavigationContainer> component:
        in NavigationContainer (created by App)
        in App
        in PersistGate
        in Provider

    Consider adding an error boundary to your tree to customize error handling behavior.
    Visit https://reactjs.org/docs/error-boundaries.html to learn more about error boundaries.".

      at CustomConsole.error (node_modules/@jest/console/build/CustomConsole.js:123:10)
      at logCapturedError (node_modules/react-test-renderer/cjs/react-test-renderer.development.js:7959:17)
      at logError (node_modules/react-test-renderer/cjs/react-test-renderer.development.js:7995:9)
      at update.callback (node_modules/react-test-renderer/cjs/react-test-renderer.development.js:8912:9)
      at callCallback (node_modules/react-test-renderer/cjs/react-test-renderer.development.js:7324:16)
      at commitUpdateEffects (node_modules/react-test-renderer/cjs/react-test-renderer.development.js:7357:11)
      at commitUpdateQueue (node_modules/react-test-renderer/cjs/react-test-renderer.development.js:7347:7)
      at commitLifeCycles (node_modules/react-test-renderer/cjs/react-test-renderer.development.js:8231:15)
      at commitAllLifeCycles (node_modules/react-test-renderer/cjs/react-test-renderer.development.js:9531:11)
      at Object.invokeGuardedCallbackImpl (node_modules/react-test-renderer/cjs/react-test-renderer.development.js:2057:14)

 PASS  __tests__/App-test.tsx
  ✓ renders correctly (11ms)

Test Suites: 1 passed, 1 total
Tests:       1 passed, 1 total
Snapshots:   0 total
Time:        4.118s, estimated 5s
Ran all test suites.
npm ERR! Test failed.  See above for more details.

Я испробовал обе реализации jest, предоставляемые response-native-community.

https://github.com/react-native-community/async-storage/blob/master/docs/Jest-integration.md

И этот ТАК ответ, но я не могу понять это.

Как проверить Async Storage с помощью Jest? 


/**
 * App-test.txt
 */

import 'react-native'
import renderer from 'react-test-renderer'
import React from 'react'
import { Provider } from 'react-redux'
import { PersistGate } from 'redux-persist/es/integration/react'
import mockAsyncStorage from '@react-native-community/async-storage/jest/async-storage-mock';

import App from '../App'
// Note: test renderer must be required after react-native.

import configureStore from './../app/store'

const { store, persistor } = configureStore()


jest.mock('@react-native-community/async-storage', () => mockAsyncStorage);


jest.mock('NativeModules', () => ({
  UIManager: {
    RCTView: () => ({
      directEventTypes: {}
    })
  },
  KeyboardObserver: {},
  RNGestureHandlerModule: {
    attachGestureHandler: jest.fn(),
    createGestureHandler: jest.fn(),
    dropGestureHandler: jest.fn(),
    updateGestureHandler: jest.fn(),
    State: {},
    Directions: {}
  }
}))

it('renders correctly', () => {
  renderer.create(
    <Provider store={store}>
      <PersistGate persistor={persistor}>
        <App />
      </PersistGate>
    </Provider>
  )
})

мой шутливый конфиг в package.json 

"jest": {
    "setupFiles": ["./__mocks__/@react-native-community/async-storage.js"],
    "preset": "react-native",
    "transformIgnorePatterns": [
      "/node_modules/(?!native-base)/"
    ],
    "moduleFileExtensions": [
      "ts",
      "tsx",
      "js"
    ],
    "transform": {
      "^.+\\.(js)$": "<rootDir>/node_modules/babel-jest",
      "\\.(ts|tsx)$": "<rootDir>/node_modules/ts-jest/preprocessor.js"
    },
    "testRegex": "(/__tests__/.*|\\.(test|spec))\\.(ts|tsx|js)$",
    "testPathIgnorePatterns": [
      "\\.snap$",
      "<rootDir>/node_modules/"
    ],
    "cacheDirectory": ".jest/cache"
  },

асинхронному storage.js 

import mockAsyncStorage from '@react-native-community/async-storage/jest/async-storage-mock';

jest.mock('@react-native-community/async-storage', () => mockAsyncStorage);
...