Jest.js 如何测试react-native方法?

3okqufwl  于 2023-09-28  发布在  Jest
关注(0)|答案(1)|浏览(154)

我想测试react-nativeVibration模块,问题是当我尝试测试它时,我得到一个错误:
使用此组件:

import React, { useEffect } from 'react';
import { Text, Vibration } from 'react-native';

interface Props {}

export const MyComponent = (props: Props) => {
  useEffect(() => Vibration.vibrate(1), []);
  return (
    <Text>asdaf</Text>
  );
};

这个测试文件:

// @ts-nocheck
import React from 'react';
import { render } from '@testing-library/react-native';
import { NativeModules } from 'react-native';

import { MyComponent } from '../../../src/modules/MyComponent';

describe('MyComponent', () => {
  it('alpha', () => {
    const { debug } = render(<MyComponent/>);
    expect(true).toBeTruthy();
  });
});

我得到这个错误:

Invariant Violation: TurboModuleRegistry.getEnforcing(...): 'Vibration' could not be found. Verify that a module by this name is registered in the native binary.

我试着这样模仿react-native

// @ts-nocheck
import React from 'react';
import { render } from '@testing-library/react-native';
import { NativeModules } from 'react-native';

import { ChatRoomContainer } from '../../../src/modules/ChatRoom';

// Mock NativeModules
jest.mock('react-native', () => ({
  ...jest.requireActual('react-native'),
  Vibration: {
    vibrate: jest.fn()
  },
  __esModule: true
}));

describe('MyComponent', () => {
  it('alpha', () => {
    const { debug } = render(<ChatRoomContainer/>);
    expect(true).toBeTruthy();
  });
});

但是,我收到了大量与不应该再使用的旧模块相关的警告:

Warning: CheckBox has been extracted from react-native core and will be removed in a future release. It can now be installed and imported from '@react-native-community/checkbox' instead of 'react-native'. See https://github.com/react-native-community/react-native-checkbox
Warning: DatePickerIOS has been merged with DatePickerAndroid and will be removed in a future release. It can now be installed and imported from '@react-native-community/datetimepicker' instead of 'react-native'. See https://github.com/react-native-community/datetimepicker

那么测试react-native的这种功能(如Vibration)的最佳方法是什么呢?
提前感谢您的时间!

jyztefdp

jyztefdp1#

你可以使用内部的 library path 来模拟一个“react-native”库,如下所示:

const mockedVibrate = jest.fn();
jest.mock('react-native/Libraries/Vibration/Vibration', () => ({
   vibrate: mockedVibrate,
}));

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