如何测试本机方法？

问题描述

我想测试 Vibration 的 react-native 模块，问题是我尝试测试时出错：

使用这个组件：

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>
  );
};

还有这个测试文件：

// @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();
  });
});

我收到此错误：

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

我试图像这样模拟 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',() => {
    const { debug } = render(<ChatRoomContainer/>);
    expect(true).toBeTruthy();
  });
});

但随后我收到了大量与不应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 Vibration 的此类功能（如 react-native）的最佳方法是什么？

提前感谢您的时间！

解决方法

您可以使用库路径模拟 react-native，如下所示：

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