Selenium Testing Framework Selenium Test Design & Page Object Model 2

Question 1

Which locator strategy is generally considered the most reliable and stable in Selenium?

Accepted Answer

ID

Answer

IDs are unique per page and stable, making them the most reliable locator when available in the HTML.

Question 2

What is the purpose of the `By` class in Selenium WebDriver?

Accepted Answer

To provide a factory for creating locator strategies

Answer

The By class is a factory that creates locator mechanism objects used by driver.findElement() and driver.findElements().

Question 3

When should you prefer CSS selectors over XPath in Selenium tests?

Accepted Answer

For most forward-navigation selections — CSS is faster and more readable

Answer

CSS selectors are generally faster than XPath and more readable for attribute/class/ID-based selections in most browsers.

Question 4

What is a 'data-testid' attribute and why is it used in Selenium test design?

Accepted Answer

A custom HTML attribute added by developers specifically for stable test automation selectors

Answer

data-testid attributes are added by developers to give automation-stable hooks that won't change when styling or layout changes.

Question 5

What does the `driver.findElements()` method return when no matching elements are found?

Accepted Answer

An empty list

Answer

Unlike findElement(), findElements() returns an empty List rather than throwing an exception when no elements match.

Selenium Testing Framework Practice Test