酶期望配置适配器

本文介绍了酶期望配置适配器的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我通过create-react-app创建了一个新的React应用程序，我想向在该应用程序中创建的名为 MessageBox的组件编写单元测试。这是我写的单元测试：

I created a new React application by create-react-app and I wanted to write a unit test to a component named "MessageBox" that I created in the application. This is the unit test that I wrote:

import MessageBox from "../MessageBox"; import { shallow } from 'enzyme'; import React from 'react'; test('message box', () => { const app = {setState: jest.fn()}; const wrapper = shallow(<MessageBox app={app}/>); wrapper.find('button').at(0).simulate('click'); expect(app.setState).toHaveBeenLastCalledWith({modalIsOpen: false}); });

我还在 src文件夹下添加了一个名为 setupTests.js的文件，其内容为：

I also added a file under 'src' folder named 'setupTests.js' with the content:

import * as enzyme from 'enzyme'; import * as Adapter from 'enzyme-adapter-react-16'; enzyme.configure({ adapter: new Adapter() });

我通过以下方式运行它：

I ran it by:

npm测试

npm test

，我得到了错误：

酶内部错误：酶希望配置适配器，但找不到。要配置适配器，应调用 Enzyme.configure（{> adapter：new Adapter（）}）

Enzyme Internal Error: Enzyme expects an adapter to be configured, but found none. To configure an adapter, you should call Enzyme.configure({ > adapter: new Adapter() })

您知道什么可以解决此问题吗？

Do you know what can solve this problem?

推荐答案

将其添加到测试用例文件中

Add it to your test case file.

import React from 'react'; import Adapter from 'enzyme-adapter-react-16'; import { shallow, configure } from 'enzyme'; configure({adapter: new Adapter()}); test('message box', ()=> { ... })