34 Page Object Model Interview Questions (With Answers)
By Indeed Editorial Team
Published 11 August 2022
The Indeed Editorial Team comprises a diverse and talented team of writers, researchers and subject matter experts equipped with Indeed's data and insights to deliver useful tips to help guide your career journey.
Page Object Model (POM) is a design principle in Selenium that developers use to create separate object repositories and store web elements, like links and buttons. Developers use this design pattern in test automation to reduce the duplication of code and facilitate efficient test maintenance. During a Selenium interview, hiring managers can ask several questions to assess your understanding of the relationship between POM and web user interface (UI) elements or to find out about your career goals. In this article, we list some general, experience-related and in-depth Page Object Model interview questions and share some example answers.
General Page Object Model Interview Questions
Below is a list of some general Page Object Model interview questions that help interviewers find out what motivates you, what some of your qualities are and why you may be a suitable candidate for the role:
Tell us about your career goals and where you see yourself in ten years.
How long have you worked as a developer and why did you choose this profession?
The routine of an automation test engineer can be stressful. How do you manage workplace stress?
What are your expectations for your next position?
What motivates you to continue working as an automation tester?
Can you share with us your areas of improvement in the workplace?
As a software developer, what are the strengths that help you to succeed in this profession?
What is your approach to building good relationships with your team, product owners and managers?
How well do you perform with minimal supervision?
What makes you a suitable candidate for the testing analyst position in our company?
Questions About Background And Experience
Here is a set of some background and experience questions that interviewers may ask during your interview to assess your skills and understand your work experience and educational qualifications:
Tell us about the skills that you have gained working as a software engineer in your past roles.
What is it like to collaborate with experts from different fields, like 3D artists or marketing heads?
You have been working in this field for seven years now. Tell us about the most challenging project that you ever completed.
Why do you think your scholastic achievements align with the position in our organisation?
Why do you think assessing functional and hardware requirements is critical to a testing environment?
What is your level of experience with Structured Query Language (SQL), C# and Python?
List some software tools that you utilise to support system integration.
What do you keep in mind during the planning and execution of tests?
What experience do you have with business processes and the improvement of testing standards?
Do you have additional certifications or licences?
Below are some in-depth questions hiring managers may ask to gauge your strengths and abilities that help you to accomplish varied tasks as a Selenium developer:
What is your strategy to develop well-defined and reusable functional test suites?
What, according to you, are some challenges that software development is experiencing?
Tell us about a time when you worked with product managers to develop and maintain an automation framework.
Describe some recently developed technological tools that seem interesting as a Selenium developer.
Why do you think it is a good idea for a business to automate testing with Selenium?
How do you manage multiple elements in a POM class?
Do you read or watch videos to stay updated with the latest industry trends?
Tell us about your collaboration with developers and product engineers to develop integration tests.
What is your experience with cloud environments?
How would you define a test-driven development?
Related: How To Crack A Job Interview
Page Object Model interview Questions And Example Answers
If you are appearing for an interview for a role that focuses on POM, then here are some Page Object Model interview questions with example answers to help you prepare your own responses:
1. What is a Page Object Model and how do you implement it?
When interviewers ask this question, they intend to evaluate your understanding of POM and how developers implement it. To prepare an appropriate answer, cover all important aspects of POM that help you define this test automation framework, like UI and repositories. Focus on the objective of POM when preparing for this question.
Example answer: 'POM is a useful test automation framework that developers prefer because they are not required to change tests when there is a change in a UI. It helps them to create a separate object repository where they store object Locators. The UI of a web application has different areas that a developer may have to test and a page object allows them to model the different objects within the code of the test. This saves time, as POM reduces the number of duplicated code.
POM with Page Factory and without Page Factory are two ways with which we create POM. What I like about POM is that I can use groups to separate web objects on a particular page. This helps me to conduct easy test maintenance. POM is a design pattern that developers use in Selenium test automation and using it with different frameworks, like hybrid or modular, is also easy.'
2. What do you think are the advantages of POM?
Interviewers ask this question to know from candidates why developers use POM. In your answer, list some advantages and explain how they help developers to work with code. Consider keeping your answer brief by mentioning only the key merits of POM.
Example answer: 'POM is a popular framework because it offers developers various advantages, like re-utilisation of elements or reducing the size of code. Its centralised maintenance of elements helps developers when they are automating application under test (AUT). A clear demarcation between the test code and the code specific to a page, like locators and layout, is another advantage of POM. It is also easy to streamline the testing process with a page having a single repository for the services. This clear code separation and service consolidation help developers to make modifications easily if a UI has changed.
POM also offers the ability to reuse code and maintain the code well. Once you have written the code, you may use it for several other tests. Since test objects and functions remain separated, it helps developers to easily manage the code and keep it clean. The separation between the test code and page-specific code also enables developers to read the code easily.'
3. Define Page Factory and Page Factory Class.
With this question, interviewers find out how well you know about the varied aspects of POM. Your answer helps them to know that you possess the knowledge of POM extensions and how important it is to structure your code. When defining the two, consider being specific to give an impressive answer. Also, mention why developers utilise Page Factory and Page Factory Class.
Example answer: 'Page Factory is a feature of POM that developers use in different frameworks, like Data Driven and Keyword Driven. This in-built POM for Selenium WebDriver is an extension of Page Objects, while the Page Factory Class helps developers to easily use the Page Objects. The Page Factory concept allows us to separate the repository from the test methods. With it, developers create distinct Java classes for the many pages of a website. With Page Factory annotations, we make our code highly readable.
Page Factory Class supports page object design patterns and helps developers to prepare page object elements. There are annotations for elements that developers create to define objects and separate them from one another. Serving as a catalyst, Page Factory Class helps developers to easily use page objects.'
4. What are OOPS concepts that developers apply in an automation framework?
Interviewers may often ask this question to determine if you know about the Object-Oriented Programming (OOPS) concepts in Java. An impressive answer to this question includes the four principles of OOPS that developers may apply in an automation framework. Define each principle and what role it has in automation testing.
Example answer: 'The four principles of OOPs are Inheritance, Polymorphism, Encapsulation and Abstraction. The Inheritance mechanism is based on a child class taking the properties from a parent class. This way, reusing the methods of a base class in a sub-class becomes easy. Encapsulation is a process where developers combine code and data to create a single unit to hide the data of one class from another. In Polymorphism, we have method overriding and method overloading. The combination of the two allows us to perform a single task in different ways. With abstraction, we only display the essential information.
Developers mostly apply Inheritance, Polymorphism and Encapsulation in Selenium Testing in different ways. With Inheritance, developers may ensure the reusability of a class. This helps them to avoid writing the same initialisation code repeatedly. A POM project has a separate class for every page. Keeping the data of one class separated from the data of another class is a great example of Encapsulation. Selenium WebDriver interface supports the many procedures of varied browsers, which aligns with the Polymorphism concept of single interface supporting multiple methods.'
Please note that none of the companies, institutions or organisations mentioned in this article are associated with Indeed.
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