reactjs – Enzyme Jest window.getSelection()不起作用

如何解决我的情况？以下功能的Jest Enzyme测试返回

TypeError: window.getSelection is not a function

我的代码：

_addNewAgent () {
    window.getSelection().removeAllRanges();

    const newAgent = generateNewAgent();
    const newDataBase = this.state.agentsDatabase;

    newDataBase.push(newAgent);

    this.setState({
        currentAgentProfile: newAgent,agentsDatabase:      newDataBase,infodisplayContent:  'profile'
    });
}

我的测试：

import React from 'react';
import { mount } from 'enzyme';
import App from '../containers/App';

const result = mount(
    <App />
);

test('add agent',() => {
const agentsList = result.state().agentsDatabase.length;

result.find('#addNewAgent').simulate('click');
expect(result.state().agentsDatabase.length).toBe(agentsList + 1);

expect(result.state().currentAgentProfile)
    .toEqual(result.state().agentsDatabase[agentsList]);

expect(result.state().infodisplayContent).toBe('profile');
});

解决方法

你必须存根window.getSelection().removeAllRanges().我认为这会奏效：

before(() => {
  window.getSelection = () => {
    return {
      removeAllRanges: () => {}
    };
  })
});