What is the Page Object Model (POM) and why is it important in test automation?
- POM
- design patterns
- maintainability
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Model answer
POM is a design pattern that creates an abstraction layer between test scripts and UI elements. Each page (or component) gets a class that encapsulates its locators and interactions. Benefits: reduces duplication (one locator update fixes all tests), improves readability (tests read like user stories), and makes maintenance scalable. Without POM, a single UI change can break dozens of tests.
What interviewers listen for
- Test architecture instinctsYou can defend why your suite is shaped like a pyramid, a trophy, or a honeycomb.
- Locator disciplineYou rank selector strategies by stability and explain when to break the rule.
- Flaky test ownershipYou debug to a structural fix instead of retry-until-green.
- Parallelisation literacyYou know how your framework isolates state, fixtures, and database access across workers.