Puppeteer performance testing. Running the script in Node.

Puppeteer performance testing You can add Puppeteer to your project by using npm (Node Package Manager). in src/test/ you will find file named frontend. Integration with Jest: Playwright integrates seamlessly with Jest, a popular testing framework, streamlining the testing process Performance testing on a slow network and weak CPU using Puppeteer and React. Puppeteer is a JavaScript library which provides a high-level API to control Chrome or Firefox over the DevTools Protocol or WebDriver BiDi. In this article, I will demonstrate how to build the script to automate gathering performance metrics like First Contentful Paint and Core Web Vitals from the React-based application using Puppeteer and TypeScript. For example, you can use Puppeteer to click on buttons and links, fill out forms, and assert that the expected results are displayed on the page. to Performance Testing. Testing Frontend. Watchers. "puppeteerScript" - path of the test script written using puppeteer. Oct 3, 2023 · To ensure your website delivers a seamless user experience, you need to conduct performance tests regularly. Prominent features of Puppeteer include screenshot testing, performance testing, web scraping, and automation. report. js tomaskucharzyk@Tomass-Air-2 puppeteer-test % This may take some time, depending on the size of your flow. Using await puppeteer. In the previous article I've shown how to extract performance metrics from the React-based application using Puppeteer. nginx Website performance testing with Headless Chrome & Puppeteer - raharrison/puppeteer-perf Sep 16, 2024 · While it doesn’t include a built-in testing framework, Puppeteer integrates easily with popular JavaScript testing frameworks, making it a versatile tool for web automation tasks. Playwright supports performance testing, enabling the assessment and optimization of web page performance. 4 forks. Puppeteer, while capable of basic performance assessments, is not specialized for detailed Jul 18, 2018 · Time to tackle the performance tests! Performance Tests With Puppeteer. js runs in ~3500ms, mocha . js generates a file with the default name flow. We got ScriptDuration, Contentful Paint, Time To First Byte, Largest Contentful Paint, and other metrics. test. js). Puppeteer can generate a HAR file or use the page. Step 1 - Install Puppeteer. Stars. With everything set up we can finally start writing our tests. MIT license Activity. Nov 22, 2024 · As a software development company, optimizing resource management is crucial to ensuring your scripts run efficiently and effectively. 4 watching. Jul 12, 2020 · Optimizing and Deploying Puppeteer Web Scraper; 8 Tips for Faster Puppeteer Screenshots; Edit: From your code i see you use the page. And then access the login page, type user / password, hit the log Jul 26, 2022 · Check out The State of JS 2021 Puppeteer testing data on the basis of developer Satisfaction, Interest, Usage and Awareness, highlighting the growing need to understand what is Puppeteer in the developer community. setViewPort() method to set a viewport size of 1920x1080 px on your page. Jul 6, 2021 · How to get performance metrics and web vitals using Puppeteer, React and TypeScript, Part 1. launch() api, create 1000 headless chrome instances. Use Puppeteer's high-level API to automate and measure performance metrics effectively. Forks. Puppeteer is a great testing platform, but it is not the only one. What I've tried so far: different combination of include/exclude nyc flags; updating to latest versions of Puppeteer, nyc and mocha; removing my Puppeteer arguments; searching for Puppeteer & Istanbul related issues (with not much success) trying headless: true. What makes Puppeteer particularly valuable is its ability to perform these actions in a headless (background) environment, allowing for a robust yet non Jul 10, 2019 · Writing Our Tests. Puppeteer. /test/*. When I open Dec 1, 2022 · Puppeteer is a Node-based browser automation library that can be used to test the look, performance, and usability of any web page in a Google Chrome-based (or Chromium-based) browser. You can track metrics such as load times, resource utilization, and rendering speed, helping you optimize the performance of your web applications. Let’s start with something simple. 25 stars. With Puppeteer, a popular Node library that provides a high-level API to control headless Chrome or Chromium, there are several key strategies you can implement to fine-tune your scripts for maximum performance. emulateNetworkConditions API. Get started | API | FAQ | Contributing | Troubleshooting Installation Puppeteer is a JavaScript library which provides a high-level API to automate both Chrome and Firefox over the Chrome DevTools Protocol and WebDriver BiDi. Using Puppeteer, performance metrics can be measured and analysed in order to optimize the website for different devices and network speeds. Before using Puppeteer, you need to install it. CPU throttling allows you to simulate how a page performs on slower mobile devices. Js library that Holistically test and tune the entire platform, not just the parts you write tests for; Accurately simulate real browser based traffic, downloading the whole app and all remote assets; Hybrid functional/load testing capability, with the ability to log in and navigate and input data, regardless of the underlying technology stack See full list on dev. Puppeteer is a powerful tool for automating browsers, and it can be effectively used for load testing web applications. Aug 5, 2022 · In addition, Puppeteer can be used for testing purposes. Dec 18, 2024 · This blog focuses on exploring Puppeteer, a powerful tool that leverages Chrome DevTools for web automation and browser interaction. For performance testing with Puppeteer, capture a timeline trace of your site to diagnose performance issues. Running the script in Node. May 16, 2024 · tomaskucharzyk@Tomass-Air-2 puppeteer-test % node test_recording2_lighthouse. html. Jun 9, 2021 · Take a look at client-side performance testing using Lighthouse CI with Puppeteer. The project provides a Jest preset, called jest-puppeteer which you can add in your Jest configuration file (jest. Run the following command in your terminal: npm i puppeteer Step 2 - Use Puppeteer for Performance Testing. Once added, you can run your Jest tests with Puppeteer, like this example: Aug 22, 2019 · I am at design phase for a load test setup using headless chrome controlled by Puppeteer. This can be done using Puppeteer’s page. Difference between Puppeteer and other testing platforms. "puppeteerLaunchOptions" - options which It offers an easy way to run your tests with Puppeteer and provides specific matchers, tailored to Puppeteer, called expect-puppeteer. May 15, 2024 · Playwright supports detailed performance testing, which helps in optimizing web page performance. Sep 24, 2021 · Puppeteer can be used for performance testing as it can be used to record runtime and load performances, which cannot be done in case of Selenium. Use it to automate anything in the browser, from taking screenshots and generating PDFs to navigating through and testing complex UIs and analysing performance. config. Performance Testing. The first performance metric we are going to check is the time before dom is complete. It also delves into how Puppeteer can be used for performance testing, making it ideal for analyzing web application speed and resource usage in real-world conditions. In this case, it took about 20 seconds to finish the audit. js into nyc _mocha . Whats the best approach to follow? I have thought of below two approaches. Dec 2, 2020 · With Puppeteer, you can scrape websites, generate screenshots and PDFs of pages, act as crawlers for SPA and generate pre-rendered content, automate your form submissions, test UI, access web pages and extra information using DOM API, and, finally, automate performance analysis. Puppeteer is not specialized for performance testing but can be used for basic performance assessments. One powerful tool for this purpose is Puppeteer, a Node. metrics() function to extract Automated UI Performance Testing with Jest and Puppeteer Resources. Performance Testing: Puppeteer can be used to analyze and measure web page performance metrics. Dec 18, 2024 · Efficient Performance Testing: Puppeteer allows you to gather metrics on page load times, JavaScript execution, and rendering, making it ideal for performance monitoring and testing. Puppeteer runs in the headless (no visible UI) by default. Moreover, the tester can also check how the web application under test interacts with other Chrome extensions with Puppeteer. May 1, 2018 · Similarly ava-puppeteer is another library that is available on GitHub that will soon be available on npm. Readme License. js takes only 130ms. While it may provides a better viewing when showing the navigator it'll have some impact on performance. To simplify assertions, let's add a toBeInteractiveUnder() helper function to expect: 301 Moved Permanently. Say I need to simulate 1000 users login. Load testing with Puppeteer involves simulating multiple users interacting with your application to measure its performance under stress. tkgb nxp gcq gke doldj xrcw ghibz bpfzf wtc jwwt utusr jko dxsljz gzxpuima eklc