Selenium Interview Questions And Answers
selenium interview questions and answers
Selenium Interview Questions And Answers
In a Selenium interview, candidates can expect questions related to their understanding of test automation principles, proficiency with Selenium WebDriver, knowledge of frameworks such as TestNG or JUnit, experience with handling dynamic elements or frames, and ability to troubleshoot common issues like synchronization problems. Answers should showcase practical experience in writing efficient test scripts, handling different locators, managing test data, implementing page object model, and utilizing various Selenium functionalities for robust test automation. It's essential for candidates to demonstrate problem-solving skills, adaptability to new challenges, and a clear understanding of software testing methodologies to excel in a Selenium interview.
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1 - What is Selenium and explain its advantages?
Selenium is a popular open source automation testing tool used for web application testing. Its key advantages include support for multiple programming languages like Java, Python, C#, etc., compatibility with various browsers, operating systems, and platforms, and the ability to integrate with other tools and frameworks. Additionally, Selenium supports parallel test execution, robust test reporting, and allows for easy implementation of continuous integration.
2) Differentiate between Selenium IDE, Selenium RC, and Selenium WebDriver.
Selenium IDE is a Firefox add on used for recording and playback of tests, perfect for beginners but limited in functionality.
Selenium RC (Remote Control) was the first tool that allowed users to write test scripts in multiple programming languages. However, it has been deprecated in favor of WebDriver.
Selenium WebDriver is the latest and widely used tool for automated testing. It provides a more straightforward and more concise programming interface, enables distributed testing, and has a faster test execution speed compared to RC.
3) Explain the difference between findElement() and findElements() in Selenium WebDriver.
findElement() in Selenium WebDriver is used to locate the single web element on a web page based on the given locator. It returns the first matching element found on the web page.
findElements(), on the other hand, is used to locate multiple web elements on a web page based on the given locator. It returns a list of all matching elements found on the web page.
4) What is the difference between implicit wait and explicit wait in Selenium WebDriver?
Implicit Wait: Implicit wait is a global setting that tells the WebDriver to wait for a specified amount of time before it throws a NoSuchElementException if an element is not found. It is set only once for the entire duration of the WebDriver instance.
Explicit Wait: Explicit wait is used for a particular instance, allowing the WebDriver to wait until a certain condition occurs before proceeding further in the code. It waits dynamically based on a predefined condition, such as element visibility or clickability.
5) How can you handle different types of alerts in Selenium WebDriver?
To handle different types of alerts in Selenium WebDriver, you can use the switchTo().alert() method. For simple alerts (Accept/Dismiss), you can use the accept() and dismiss() methods. For alerts with input fields, you can use the sendKeys() method to enter text and then accept or dismiss it.
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