Not to be confused with Selenium WebDriver, which supports only browser testing, WebdriverIO is a test automation framework for both browser and native mobile app testing. It’s highly extensible and can automate tests for a wide variety of apps running in any mainstream browser or mobile OS.
WebdriverIO’s ability to support a broad set of testing needs makes it a great framework if you develop multiple types of apps and want a single framework for automatically testing them all.
WebdriverIO uses Puppeteer out-of-the-box. It also integrates with Mocha, Jasmine, and Cucumber, and the whole setup requires just a couple of npm commands.
The main limitations of Cypress include limited support for testing mobile apps: it can handle mobile apps that run natively in a browser, but not other types. It also currently supports Chrome-family browsers, WebKit, and Firefox.
TestCafe also supports all of the major desktop browsers, including Chrome, Internet Explorer, Edge, and Safari. It has some limited support for browser-based mobile apps, but in general it is not designed for mobile testing.
A drawback of TestCafe is that it only supports client-side apps. It’s also designed primarily to be an end-to-end and regression testing framework, and does not work well for unit testing or integration testing.
As of right now, perhaps the biggest drawback of Playwright is that, because the framework is relatively new, it is still evolving, and it doesn’t offer as many integrations as more mature frameworks. The lack of Internet Explorer support is also a limitation, as is the fact that Playwright requires a custom browser that must be downloaded each time you want to run a test. This adds time to testing routines, and also means that you can’t test in the actual browser that your users are using. Finally, like Puppeteer, Playwright needs to be integrated manually with test frameworks like Mocha, Jasmine or Jest.
Related resource: Getting Started with the Playwright Test Automation Framework
If you like Playwright but wish it were more stable and mature, you should consider Puppeteer, which has been around in stable form since 2018.
The main limitation of Puppeteer is that it only fully supports Chrome and Chromium, so it’s not a true cross-browser testing solution. That said, the Firefox nightly builds are currently compatible with Puppeteer as well, thanks to collaboration between the Puppeteer team and Mozilla developers. Puppeteer support for stable versions of Firefox is in the works.
In sum: Puppeteer is the go-to test automation framework for developers who only need to support Chrome and Chromium. For cross-browser tests, frameworks like Playwright provide a similar experience.
How many types of apps and configurations do you need to support? Frameworks like WebdriverIO are the most extensible.
Do you need to test mobile as well as desktop apps? If so, frameworks that broadly support both types of apps, like WebdriverIO, are a good choice.
How robust and mature do you want the framework to be? Frameworks like Puppeteer, TestCafe, and WebdriverIO are tried-and-true.
Do you need a framework that can handle front-end as well as back-end testing, like Cypress?
How quick and easy do you want it to be to write, configure, and run tests? Currently, frameworks like Puppeteer and Playwright require some relatively complex configuration, especially if you are not using them for the narrow use cases that they support out-of-the-box.
Fast and reliable
Easy to set up
Rich and intuitive dashboard
Does not provide support browsers like Safari and IE
You cannot use Cypress to drive two browsers at the same time
Developers in need of an automation library solution for cross-browser end-to-end testing
Fast, stable, and reliable
Integrates with CI/CD pipelines
Supports multiple programing languages
Relatively new framework and evolving APIs
Relatively smaller Community
Developers looking for a Unit Testing solution
Good documentation and simple to setup
Maintained by Google
Enables web scraping
Limited cross-browser support
Works only with Chrome
The only supported language is Node.js
Fast and reliable
Simple cross-browser support
Stable for execution
No browser control
Need for more documentation
Sign up for a Sauce Labs free trial to start testing with your favorite test automation framework today.
Chris Tozzi has worked as a journalist and Linux systems administrator. He has particular interests in open source, agile infrastructure, and networking. He is Senior Editor of content and a DevOps Analyst at Fixate IO. His latest book, For Fun and Profit: A History of the Free and Open Source Software Revolution, was published in 2017.