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Selenium is a popular automation testing tool frequently used by developers for testing web applications. Mostly, selenium tool is popular for browser-based applications not for API testing or unit testing. Selenium Web Driver is a popular testing tool used by big Companies today. When you wanted to start your career as automation tester, Selenium WebDriver is the common topic usually discussed by a recruiter during the interview. In this article, we will discuss on Selenium WebDriver interview questions and answers to assess your testing knowledge on selenium tool. Why is selenium testing tool just loved by developers and testing professionals? Here are the quick reasons that give a clear explanation why selenium testing tool is just loved by developers and testing professionals:
In this article, we will discuss on Selenium testing interview questions and answers, Selenium WebDriver interview questions and answers, Selenium tricky interview questions and answers one by one to assess your testing knowledge on selenium tool.
Automation testing automates the manual testing process which facilitates the creation of multiple testing scripts that can be executed repeatedly without any manual intervention.
The advantages of automation testing are just the endless. Here we have discussed on some of the major benefits that are usually experienced by testing professionals during the entire process –
The tools available to work with selenium are specially designed to cater to different testing requirements so it is taken as a testing package not only a single tool.
Selenium tool supports two types of testing – Functional testing and Regression testing.
The functionality of the selenium testing tool is limited to web applications only. It cannot be used mobile apps or API testing. Further, selenium tool does not provide a facility to test Captcha and barcodes. You must have knowledge of some programming language when working on selenium. For report generation, you have to use third-party tools.
Selenese is a popular programming language that is used to write test scripts in Selenium IDE.
To identify web elements in Selenium, you need to work with locators. They are the address identifiers to identify web elements accurately and more precisely. The most popular locators in Selenium include ID, TagName, CSS Selector, DOM, ClassName, LinkTest, Name, XPath and many others.
Read: What is Actions Class in Selenium and How to use it?
Based on the XML path of web elements, XPath is used to locate elements on web page. In other words, it is popular to locate HTML elements on a webpage.
To count a number of elements on a page, you first need to locate them and count the final size for the page.
Selenium Web Driver is a popular testing tool used by big Companies today.
The two popular waiting methods in selenium Web Driver are – implicit wait an explicit wait. Implicit waiting method is used when Web Driver is not able to find elements in the document, then it waits for the certain time period for the element to appear in the document.
At the same time, the explicit waiting method is an advanced technique that allows developers to write custom codes whenever required.
Implicit waiting method is time-consuming but suitable for all types of elements, but the explicit wait time is used for selected elements only.
For this purpose, you need to use the Enabled() method in your script. The return value of the method would be a Boolean. If the return value is true, then the button will be enabled otherwise it will not.
For this purpose, you need to use the is Displayed() method in your script. The return value from the method would be Boolean. If the return value is true then the element will be visualized otherwise it will not.
These are Chrome, Firefox, Safari, Internet Explorer, iPhone, Android, HTML Unit, and Opera Drivers etc.
Read: How to Download and Install Selenium IDE in Firefox?
These are iPhone, Android, and Opera Mobile Drivers etc.
These are PHP, Python, Ruby, C#, PERL, Java etc.
Assert command and verify commands both will check the conditions for Booleans values. In case the condition is false then assert command will halt the program but verify command does not halt the program but it takes it to the next phase of execution.
As we have discussed already based on XML path of web elements, XPath is used to locate elements on web page. Like UNIX, Linux, or any other programming language, single slash ("/") represents absolute path while double slash ("//") in XPath represents an arelative path.
The popular annotations used in Selenium WebDriver include After, Before, Test, Ignore, AfterClass, BeforeClass, and RunWith etc.
Selenium Grid is a popular technology used for distributed data process that distributes tests on multiple machines in parallel. In other, tests can be executed in parallel on different operating systems, different web browsers at the same time by using single script only. Distributed data processing in Selenium not only reduces overall execution time and feedback is also quick.
The result for text execution in selenium IDE is displayed in Log Window.
Obviously, test cases can be modified in Selenium IDE by table views or by looking up the source code.
JUnit is an open source framework introduced by Apache to test Java application.
Read: Ultimate Selenium Testing Tutorials For Beginners & Professionals (With Career Path)
JUnit Annotations is a special process to add syntactic meta-data to Java code. Some of the popular examples of JUnit annotations include variables, parameters, classes, or methods etc.
Quit() method ends all the browsers running in Web Driver while close() method ends the current browser only.
The waiting methods were specially introduced for AJAX based apps in Selenium WebDriver. The two popular types of waits in Selenium are names as Implicit waits and Explicit waits.
The major drawback of implementing implicit waits in Selenium is exceeded time limits. It slows down the overall performance of test cases.
Selenium testing is slow as compared to other automated testing tools. Another major problem in complex ID generation where auto-generated ID can result in test case failure during playback.
These parameters are an aPort number, Host, URL, and Browser etc.
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