UI Testing with Puppeteer

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Learn to write fail-safe automation tests, device emulation, and browser automation using Puppeteer's Google-powered API. This resource helps you quickly get started with Puppeteer, emphasizing best practices for automation testing. You’ll automate modern web applications using Jest and Mocha, and generate screenshots for UI regression tests. Puppeteer is an open-source web automation library by Google, designed for end-to-end testing, performance monitoring, and task automation. Through real-world use cases, this guide takes you on a practical journey to master Puppeteer and enhance your automation code. Beginning with an introduction to headless browsers, it covers the foundations of browser automation, including automating Google Chrome and Mozilla Firefox. You'll learn to create reliable end-to-end tests and find elements using CSS selectors and XPath expressions. As you advance, the focus shifts to more complex topics, such as executing JavaScript within the browser. You'll explore various Puppeteer use cases, including mobile device emulation, network speed testing, and web scraping. By the end, you'll be equipped to leverage Puppeteer's API in real-world projects. This resource is ideal for testing professionals, QA engineers, and test automation enthusiasts, as well as web developers interested in content generation, website scraping, and performance evaluation. While Node.js knowledge is not required, a basic under