如何使用jsdom测试带有

如何使用jsdom测试带有

本文介绍了如何使用jsdom测试带有“文档"的功能的处理方法,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

我有一个小问题..我正在尝试测试我创建的某些功能(以Typescript编写),并且正在使用mocha/chai/jsdom.现在,在测试文档中带有文档"的功能时遇到错误.我收到消息"ReferenceError:未定义文档".我怎么仍然可以在其中带有文档"的情况下测试这些功能?

I have a small question.. I am trying to test some functions I created (written in Typescript), and I am using mocha/chai/jsdom. Now, I get an error while testing functions with 'document' inside the document.. I get the message 'ReferenceError: document is not defined'. How can I still test these functions with 'document' in it?

例如:

[prompt.spec.ts]

[prompt.spec.ts]

import { expect } from 'chai'
import { JSDOM } from 'jsdom'
import { functionX } from './functions'

describe('Functions', () => {
  it('is possible to execute functionX with simple parameters', () => {
    const jsdom = new JSDOM()
    const htmlElement = jsdom.window.document.createElement('div')
    expect(functionX(htmlElement, function() { return true; } )).to.equal(true)
  })
})

[functions.ts]

[functions.ts]

export const functionX = (
    body:HTMLElement, callback: (ok: boolean) => void
) => {
    const doc = body.ownerDocument
    const parent = doc.body

    // ...

    let container = document.querySelector('.container') as HTMLDivElement  //  ReferenceError: document is not defined

}

推荐答案

如果事先准备好,则可以使JSDOM的文档在全球范围内可供您的测试使用.

You can make the JSDOM's document available to your tests globally if you prepare it in advance.

import { JSDOM } from 'jsdom';
const { window } = new JSDOM('<!doctype html><html><body></body></html>');

// Save these two objects in the global space so that libraries/tests
// can hook into them, using the above doc definition.
global.document = window.document;
global.window = window;

将此文件写入一个单独的文件中,然后将该文件作为参数添加到mocha中,紧接您的spec文件之前.像这样:

Write this into a separate file and add that file as a parameter to mocha right before your spec files. Something like:

_mocha Specs/_setup.js Specs/*.js

这篇关于如何使用jsdom测试带有“文档"的功能的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!

08-24 06:12