Puppeteer 简明教程

Puppeteer - Chrome

默认情况下，以无头模式在 Chrome 或 Chromium 浏览器中执行 Puppeteer 中编写的测试。此外，我们必须在代码中添加以下 Puppeteer 库。

The tests written in Puppeteer are executed in the Chrome or Chromium browser in a headless mode by default. Also, we have to add the below Puppeteer library in the code.

const pt = require('puppeteer')

首先，按照人偶基本测试章节执行步骤 1 至 2，如下所示 -

To begin, follow Steps 1 to 2 from the Chapter of Basic Test on Puppeteer which are as follows −

Step 1 - 在创建 node_modules 文件夹的目录中创建一个新文件（人偶和人偶核已安装的位置）。

Step 1 − Create a new file within the directory where the node_modules folder is created (location where the Puppeteer and Puppeteer core have been installed).

人偶安装的详情在人偶安装篇章中进行了讨论。

The details on Puppeteer installation is discussed in the Chapter of Puppeteer Installation.

右击创建 node_modules 文件夹的文件夹，然后点击新建文件按钮。

Right-click on the folder where the node_modules folder is created, then click on the New file button.

node modules

Step 2 - 输入文件名，如 testcase1.js。

Step 2 − Enter a filename, say testcase1.js.

testcase1 js

Step 3 - 将以下代码添加到新创建的 testcase1.js 文件中。

Step 3 − Add the below code within the testcase1.js file created.

//adding Puppeteer library
const pt = require('puppeteer');
pt.launch().then(async browser => {
   //browser new page
   const p = await browser.newPage();
   //set viewpoint of browser page
   await p.setViewport({ width: 1000, height: 500 })
   //launch URL
   await p.goto('https://www.tutorialspoint.com/index.htm')
   //get browser
   const v = await p.browser().version();
   console.log("Browser: " + v)
   //browser close
   await browser.close()
})

Step 4 - 使用以下命令执行代码 -

Step 4 − Execute the code with the command given below −

node <filename>

因此，在我们的示例中，我们将运行以下命令 -

So in our example, we shall run the following command −

node testcase1.js
headless chrome

在成功执行命令后，执行测试的浏览器 - HeadlessChrome/92.0.4512.0 将打印在控制台中。

After the command has been successfully executed, the browser in which the test is executed - HeadlessChrome/92.0.4512.0 gets printed in the console.