End-to-end testing is a sort of automated software testing that is particularly beneficial for online applications since it is closer to the real user experience than most other types of testing. Selenium WebDriver is a widely used web browser automation tool for end-to-end testing. So, why not use Selenium instead?
When compared to pure Selenium, Protractor has a number of advantages. For starters, because Protractor is a Node app, it takes advantage of the vast amount of packages available through Node.
Testing in a realistic environment. End-to-end testing simulates how a real user would interact with the programme. No other method of software testing can deliver the same level of input.
Open-source. Protractor is a free and open-source programme. Users who are interested can follow the project’s progress and even participate in it.
Installation and setup are simple. Protractor is a Node.js-based application. As a result, you can install it with npm and have it ready to use in no time.