Automated Browser Testing With The WebDriver API

Manually clicking through different browsers as they run your development code, either locally or remotely, is a quick way to validate that code. It allows you to visually inspect that things are as you intended them to be from a layout and functionality point of view. However, it’s not a solution for testing the full breadth of your site’s code base on the assortment of browsers and device types available to your customers.

source https://www.smashingmagazine.com/2018/01/automated-testing/