Selenium Coding Interview Questions And Answers
Selenium Interview Questions and Answers: Tips for Acing the Coding Portion
Selenium Coding Interview Questions And Answers
Selenium is a popular automation testing tool used for testing web applications. As more companies are adopting Selenium for their testing needs, the demand for Selenium developers has increased. In a Selenium coding interview, candidates are evaluated on their knowledge of Selenium framework, programming skills in languages like Java, C#, Python, and their understanding of web development concepts and best practices. Some commonly asked questions in a Selenium coding interview include questions on basic software testing principles, Selenium commands and locators, handling multiple windows and frames, handling synchronization, and handling alerts and pop-ups. It is important for candidates to have hands-on experience with Selenium to demonstrate their proficiency in coding and troubleshooting skills.
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1 - What is Selenium and why is it used?
Selenium is an open source automation tool mainly used for testing web applications. It allows automated testing in multiple browsers and across different operating systems.
2) What are the main components of Selenium?
Selenium has four main components: Selenium IDE, Selenium RC, Selenium WebDriver, and Selenium Grid.
3) What is the difference between Selenium IDE and Selenium WebDriver?
Selenium IDE is a record and playback tool for creating simple test cases, while Selenium WebDriver is a library used for creating more complex test cases.
4) What are the different locators available in Selenium WebDriver?
ID, Name, Class Name, Tag Name, Link Text, Partial Link Text, CSS Selector, and XPath.
5) How does Selenium handle dynamic web elements?
It can use XPath, which allows locating elements based on their attributes, as well as using relative locators.
6) What is the default browser in Selenium WebDriver?
Firefox is the default browser, but it also supports other popular browsers like Chrome, Internet Explorer, Safari, and Opera.
7) What is Selenium grid and why is it used?
Selenium Grid is used for parallel testing, where tests are executed on multiple browsers and operating systems simultaneously to save time.
8) What is a framework in Selenium and what are the different types?
A framework is a set of guidelines and coding standards used for creating automated tests. The different types are Data Driven, Keyword Driven, and Hybrid framework.
9) How do you handle multiple windows in Selenium?
We can use the getWindowHandles() method to fetch all the window handles, switch between windows using the switchTo() command, and close the windows using the close() method.
10) What are the different types of waits in Selenium?
Implicit wait, Explicit wait, and Fluent wait.
11) In which programming languages is Selenium compatible?
Java, C#, Python, Ruby, and JavaScript.
12) How do you handle dropdown in Selenium?
We can use the select class or sendKeys() method to select an option from a dropdown menu.
13) How do you perform mouse actions in Selenium?
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We can use the Actions class to perform mouse actions such as right click, double click, drag and drop, etc.
14) What is a TestNG framework and why is it used?
TestNG is a testing framework that facilitates data driven and hybrid testing. It also allows parallel testing and generates detailed test reports.
15) How do you handle alerts in Selenium?
We can use the Alert class to switch to an alert and perform actions like accepting or dismissing it.
16) What is the difference between findElement() and findElements() in Selenium?
findElement() returns a single web element, while findElements() returns a list of web elements that match the given locator.
17) How do you verify the title of a webpage in Selenium?
We can use getTitle() method to capture the title of a webpage and then use assertions to verify it.
18) What is the use of a Page Object Model in Selenium?
Page Object Model is a design pattern used for creating reusable and maintainable code for automated tests. It represents each page of a web application as a class, making it easier to manage the locators and actions on that page.
19) How do you handle frames or iframes in Selenium?
We can switch to a frame using the switchTo() command and then perform actions on the elements inside the frame.
20) How do you handle synchronization in Selenium?
Synchronization can be handled using Explicit wait or Fluent wait, which allows the test to wait for a certain condition to be satisfied before executing the next step.
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