Overview
Separation of Concerns
Hardcoding XPath selectors inside your test scripts is a recipe for disaster. The Object Repository pattern organizes the chaos.
In tools like UFT (QTP) or Selenium, an Object Repository acts as a database of UI elements (buttons, text fields, dropdowns). Instead of writing `driver.findElement(By.id('submit'))` in every test, you reference `Repository.LoginPage.SubmitButton`. When the UI changes—and it always does—you only fix the repository, and all tests heal instantly.
Best Practices
Dos and Don'ts
Avoid common mistakes that can lead to flaky tests and maintenance nightmares.
What to do
- •Use descriptive names for objects (e.g., 'SubmitButton' not 'btn1').
- •Group objects by page or component.
- •Regularly clean up unused objects
Common Pitfalls
- •Don't duplicate objects across different repositories.
- •Don't rely on fragile selectors (like absolute XPaths) in the repository.
- •Don't mix test data with object definitions.
The Details
Object Repository vs. Page Object Model
While an Object Repository is a static list of elements, the Page Object Model (POM) is an object-oriented design pattern. In POM, the 'page' class contains both the elements (repository) and the methods to interact with them (behavior). POM is generally preferred in modern coding-based automation (Selenium/Java, Playwright/TS) because it encapsulates logic better.