But is it that advantageous?
The page object model is the most popular and widely used framework for automating any web application.
According to Selenium, "Within your web app's UI, there are areas that your tests interact with. A Page Object models these as objects within the test code. It reduces the amount of duplicated code and means that the fix needs only be applied in one place."
The Page Object model is helpful to achieve modularity in a code and increase the code reusability. If there is a change in the UI in the future, you can easily update the business method concerning the new change while following the page object model.
You can define all the locators and functions(actions) of a web page in a separate javascript file in the page object model. Let's say you have a login page that is your page under test. You write all the elements(Login field, Password Field, Sign In button, etc.) and operations(enter a username, enter the password, click sign in, getLoginPageTitle, etc.) in a single js file(login.po.js).
Advantages of the POM model:
Reusability: You can reuse the page class if required in different test cases, which means you don't need to write code to identify the web elements and methods to interact with them for every test case.
Maintainability: In the POM, the test case and page class differ, which means you can easily update the code if a new web element is added or an existing one updated.
Readability: In the POM, page code is separated from the test code, which helps to improve code readability.
Conclusion,
The Page Object Model makes it easy to create web pages in Selenium and test them automatically. It makes the life of both developers and QAs much simpler. When done right, you can reuse these Page Object classes across your entire test suite and allow yourself to implement automation tests for your projects early on without affecting agile development. By separating user interactions in your page object models and keeping your test routines clear and straightforward, you can effortlessly align your test suite with changing requirements.
