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UI Testing with Puppeteer

You're reading from   UI Testing with Puppeteer Implement end-to-end testing and browser automation using JavaScript and Node.js

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Product type Paperback
Published in Mar 2021
Publisher Packt
ISBN-13 9781800206786
Length 316 pages
Edition 1st Edition
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Author (1):
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Dario Kondratiuk Dario Kondratiuk
Author Profile Icon Dario Kondratiuk
Dario Kondratiuk
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Table of Contents (12) Chapters Close

Preface 1. Chapter 1: Getting started with Puppeteer 2. Chapter 2: Automated Testing and Test runners FREE CHAPTER 3. Chapter 3: Navigating through a website 4. Chapter 4: Interacting with a page 5. Chapter 5: Waiting for elements and network calls 6. Chapter 6: Executing and Injecting JavaScript 7. Chapter 7: Generating Content with Puppeteer 8. Chapter 8: Environments emulation 9. Chapter 9: Scraping tools 10. Chapter 10: Evaluating and Improving the Performance of a Website 11. Other Books You May Enjoy

Creating HTML content

In this section, we will see a few simple features but pretty useful ones. You will be able to follow the code from this section in the demohtml.js file. Most of the time, you navigate pages using the HTTP protocol as we did with Wikipedia. If you open the mediaprint.html file, you navigated to that page using the pseudo protocol "file." Although it's not a real protocol, you should know that with Puppeteer, you can also navigate local files using a URL such as file:///some/folder/of/my/computer/mediaprint.html.

So, if you want to generate a social image, like the HolyJS conference one we saw in the first section, you could create a page on your website, navigate to that page using Puppeteer, take a screenshot, and use that image in your social post.

You could also have that file stored locally and navigate that file using the file:// protocol.

What I want to show you in this section is that you don't necessarily need to have a file...

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