1. What is Selenium, and why is it used for automation testing?
Answer: Selenium is an open-source tool used for automating web browsers. It allows testers to interact with web elements, perform actions, and validate results on web applications automatically. Selenium is primarily used for web application testing to ensure functionality and user experience.
2. Explain the difference between Selenium WebDriver and Selenium IDE.
Answer: Selenium WebDriver is a programming interface for interacting with web browsers programmatically, whereas Selenium IDE is a record-and-playback tool that records user interactions in the browser and generates test scripts. WebDriver is more powerful and flexible, while IDE is useful for quick test script creation.
3. How do you install Selenium WebDriver in Python?
Answer: You can install Selenium WebDriver in Python using the pip package manager. Use the following command:
pip install selenium
4. What are the different browsers that Selenium supports for testing?
Answer: Selenium supports various browsers, including Chrome, Firefox, Safari, Edge, and Internet Explorer, among others.
5. How do you launch a browser using Selenium WebDriver in Python?
Answer: To launch a browser using Selenium WebDriver in Python, you can use the following code snippet for Chrome:
from selenium import webdriver
driver = webdriver.Chrome(executable_path=”path_to_chromedriver.exe”)
Replace “path_to_chromedriver.exe” with the actual path to your Chrome WebDriver executable.
6. Explain the difference between implicit and explicit waits in Selenium WebDriver.
Answer: Implicit waits wait for a specified time for an element to appear on the page. Explicit waits are more precise and wait for a specific condition to be met before proceeding, such as waiting for an element to become clickable.
7. How can you find an element on a web page using Selenium WebDriver in Python?
Answer: You can find elements using various locators like find_element_by_id, find_element_by_name, find_element_by_xpath, find_element_by_css_selector, etc. For example: