Selenium and Cypress with Web Automation.

Kishor Munot
Dec 7, 2021 · 3 min read
Automation Tools

We discussed Selenium and Cypress in a previous blog, and both tools are very interesting for implementing design UI automation suits. We are going to discuss that which tool should we select from selenium and cypress to automate our UI tests. There’s a new kid on the block for open-source test automation tools, and everyone’s talking about how Cypress may be an alternative to Selenium. Both tools are really great and minimize many efforts to automate UI tests.

Selenium or Cypress

Cypress and Selenium serve a similar purpose that is achieved in two different ways.

Selenium is a library but requires a unit testing framework or a runner plus an assertions library to build out its capabilities. Cypress provides a robust, complete framework for running automated tests but takes some of the freedom out of Selenium by confining the user to specific frameworks and languages.

After getting knowledge of both tools we are coming with some questions like,

  • Does cypress support cross-browser testing?
  • Is cypress is alternative to selenium?
  • Why cypress does not support a range of popular programming languages?
  • Is Cypress faster than Selenium?

so we know that structure of both tools is totally different. Writing a selenium test, the user tells the WebDriver what they want, and the driver tells the browser what the user wants. After completing the loop, Selenium clients get the response. Selenium commands are not executed in the browser, so they don’t have access to any browser information to help to respond if anything changes.

On the other hand, Cypress is not flaky. Cypress commands run in the browser, It has great control over the DOM. Cypress knows and understands everything that happens in the application synchronously. Cypress even knows how fast an element is animating and will wait for it to stop! Additionally, it automatically waits for elements to become visible, to become enabled, and to stop being covered. When pages begin to transition, Cypress will pause command execution until the subsequent page is fully loaded.

Selenium vs. Cypress — Key Comparison Factors Table

Selenium vs Cypress

As several architecture layers as Selenium do not have Cypress. It works in a browser in the same way. That’s why we see a significant improvement over selenium in the speed of test performance.
Selenium has multiple levels of code between the test and browsing, which is relatively sluggish compared with Cypress.

CI/CD pipeline is possible in both tools but it is slightly restricted in cypress. There is only one alternative available for the command line and the npm library, Mocha. The CI service must support npm and test recording for most recordings on the CI server is a paying choice.
CI/CD incorporation possible in Selenium. Any test library, test notes, and execution patterns can be used and can be adapted to the requirements quickly.

The Final Verdict

When you want to decide which tool to choose between Selenium and Cypress, you must first decide which framework and language are you comfortable with.

If you don’t know what you’re doing when it comes to building out a test automation framework, Cypress may be a good option. Another thing to keep in mind is that if you look at how Cypress is built, it is largely a unit testing tool that is will fit best in Javascript-focused development teams. Once you stray from these details and your team decides to experiment with other methods of test automation, you’ll find that Selenium can better accommodate those growing pains.

I will suggest that both tools should be part of our skillset because the structure of both tools is different so add those tools one by one to your set.

Please share your feedback about both tools and also share feedback about this blog.

Thank you.

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