RPA aspirants must memorize these top 10 Selenium interview questions to crack the job

In the process of software development, Selenium has replaced manual testing. Enterprises are using this manual testing tool at such a wide level that people looking for RPA jobs must be experts on this subject matter. Here are the top 10 Selenium interview questions that RPA aspirants should have knowledge of.

1.What are the Selenium suite components?

 Selenium IDE

It is a Firefox/Chrome plug-in that was developed to speed up the creation of automation scripts. It records the user actions on the web browser and exports them as a reusable script.

Selenium Remote Control (RC)

RC is a server that allows users to write application tests in various programming languages. The commands from the test script are accepted by this server and are sent to the browser as Selenium core JavaScript commands. The browser then behaves accordingly.

Selenium WebDriver

WebDriver is a programming interface that helps create and run test cases. It makes provision to act on web elements. Unlike RC, WebDriver does not require an additional server and interacts natively with the browser applications.

Selenium Grid

The grid was designed to distribute commands to different machines simultaneously. It allows the parallel execution of tests on different browsers and operating systems. It is exceptionally flexible and is integrated with other suite components for simultaneous execution.

2.What are the limitations of Selenium testing?

 Unavailability of reliable tech support: Since Selenium is an open-source tool, it does not have dedicated tech support to resolve user queries. Tests web applications only: Selenium must be integrated with third-party tools like Appium and TestNG to test desktop and mobile applications. No built-in reporting and test management facility: Selenium has to be integrated with tools like TestNG, or JUnit among others to facilitate test reporting and management.

3.What is the difference between Selenium 2.0 and Selenium 3.0?

Selenium 2.0 is a tool that makes the development of automated tests for web applications easier. It represents the merger of the original Selenium project with the WebDriver project. Selenium RC got deprecated since the merge, however, was used for backward compatibility Selenium 3.0 is the extended version of Selenium 2.0. It is inherently backward compatible and does not involve Selenium RC. The new version came along with several bug fixes and increased stability.

4.What is the same-origin policy and how is it handled?

 The same origin policy is a feature adopted for security purposes. According to this policy, a web browser allows scripts from one webpage to access the contents of another webpage provided both pages have the same origin. The origin refers to a combination of the URL scheme, hostname, and port number. The same Origin Policy prevents a malicious script on one page to access sensitive data on another webpage.

5.What is Selenese? How is it classified?

Selenese is the set of Selenium commands which are used to test your web application. The tester can test the broken links, the existence of some objects on the UI, Ajax functionality, alerts, window, list options, and a lot more using Selenese.

6.Mention the types of Web locators.

Locator is a command that tells Selenium IDE which GUI elements (say Text Box, Buttons, Check Boxes, etc) it needs to operate on. Locators specify the area of action.

Locator by ID: It takes a string parameter, a value of the ID attribute that returns the object to the findElement() method.

Locator by the link: If your targeted element is a link text then you can use the by.linkText locator to locate that element.

 driver.findElement(By.linkText("Today's deals")).click();

7.Mention the types of navigation commands

driver.navigate().to("https://www.ebay.in/"); – Navigates to the provided URL

driver.navigate().refresh(); – This method refreshes the current page

driver.navigate().forward(); – This method does the same operation as clicking on the Forward Button of any browser. It neither accepts nor returns anything.

driver.navigate().back(); – This method does the same operation as clicking on the Back Button of any browser. It neither accepts nor returns anything.

8.What is the major difference between driver.close() and driver.quit()?

driver.close()

This command closes the browser's current window. If multiple windows are open, the current window of focus will be closed.

driver.quit()

 When quit() is called on the driver instance and there are one or more browser windows open, it closes all the open browser windows.

9.What makes Selenium such a widely used testing tool? Give reasons.

Selenium is easy to use since it's essentially developed in JavaScript. Selenium can test web applications against browsers like Firefox, Opera, Chrome, and Safari, to name a few. The test code can be written in various programming languages like Java, Perl, Python, and PHP. Selenium is platform-independent and can be deployed on different Operating systems like Windows, Linux, and Macintosh. Selenium can be integrated with third-party tools like JUnit and TestNG for test management.

10.How to click on a hyperlink in Selenium?

driver.findElement(By.linkText("Today's deals")).click();

The command finds the element using link text and then clicks on that element, whereafter the user would be redirected to the corresponding page.

driver.findElement(By.partialLinkText("Service")).click();

The above command finds the element based on the substring of the link provided in the parenthesis and thus partialLinkText() finds the web element.