Top 50 Selenium Webdriver Interview Questions And Answers Pdf

31. What are the different types of locators in Selenium?
Answer: The locator can be termed as an address that identifies a web element uniquely within the webpage. Thus, to identify web elements accurately and precisely we have different types of locators in Selenium:

• IDClassName
• Name
• TagName
• link text
• PartialLinkText
• Xpath
• CSS Selector
• DOM

32. What are the different types of Drivers available in WebDriver?
Answer:
The different drivers available in WebDriver are:

• FirefoxDriver
• InternetExplorerDriver
• ChromeDriver
• SafariDriver
• OperaDriver
• AndroidDriver
• IPhoneDriver
• HtmlUnitDriver

33. Give an example of the languages supported by WebDriver?
Answer: Java, C#, Python, and Ruby, are all supported directly by the development team. There are also PHP and Perl WebDriver implementations.

34. How to type in a textbox using Selenium?
Answer: User can use sendKeys(“String to be entered”) to enter the string in the textbox.
Syntax:
WebElement username = drv.findElement(By.id(“Email”));
// entering username
username.sendKeys(“sth”);

35. What are the advantages of Automation framework ?
Answer:
Advantage of Test Automation framework

• Reusability of code
• Maximum coverage
• Recovery scenario
• Low-cost maintenance
• Minimal manual intervention
• Easy Reporting

36. What kind of mouse actions can be performed in Selenium?
Answer: Selenium supports different mouse actions, such as:

• click(WebElement element)
• Context Click(WebElement element)
• doubleClick(WebElement element)
• mouseUp(WebElement element)
• mouseDown(WebElement element)
• mouseMove(WebElement element)
• mouseMove(WebElement element, long xOffset, long yOffset).

37. What is Junit ?
Answer:
Junit is a unit testing framework introduced by Apache. Junit is based on Java.

38. What is the difference between assert and verify commands?
Answer:

Assert: Assert command checks whether the given condition is true or false. Let’s say we assert whether the given element is present on the web page or not. If the condition is true then the program control will execute the next test step but if the condition is false, the execution would stop and no further test would be executed.

Verify: Verify command also checks whether the given condition is true or false. Irrespective of the condition being true or false, the program execution doesn’t halt i.e. any failure during verification would not stop the execution and all the test steps would be executed.

39. How can we get a text of a web element?
Answer: Get command is used to retrieve the inner text of the specified web element. The command doesn’t require any parameter but returns a string value. It is also one of the extensively used commands for verification of messages, labels, errors etc displayed on the web pages.

40. What are the different types of waits available in WebDriver?
Answer: There are two types of waits available in WebDriver:

Implicit Wait: Implicit waits are used to provide a default waiting time (say 30 seconds) between each consecutive test step/command across the entire test script. Thus, the subsequent test step would only execute when the 30 seconds have elapsed after executing the previous test step/command.

Explicit Wait: Explicit waits are used to halt the execution till the time a particular condition is met or the maximum time has elapsed. Unlike Implicit waits, explicit waits are applied for a particular instance only.

41. What is the difference between Selenium and QTP?
Answer:

• Feature
• Selenium
• Quick Test Professional (QTP)
• Browser Compatibility Selenium supports almost all popular browsers like Firefox, Chrome, Safari, Internet Explorer, Opera, etc.
• QTP supports Internet Explorer, Firefox and Chrome. QTP only supports Windows Operating System Distribution
• Selenium is distributed as an open source tool and is freely available
• QTP is distributed as a licensed tool and is commercialized
• Application under Test
• Selenium supports testing of only web-based applications
• QTP supports testing of both the web-based application and windows based application
• Object Repository
• Object Repository needs to be created as a separate entity
• QTP automatically creates and maintains Object Repository
• Language Support
• Selenium supports multiple programming languages like Java, C#, Ruby, Python, Perl, etc
• QTP supports only VB Script
• Vendor Support
• As Selenium is a free tool, the user would not get the vendor’s support in troubleshooting issues
• Users can easily get the vendor’s support in case of any issue

42. What do we mean by Selenium 1 and Selenium 2?
Answer: Selenium RC and WebDriver, in a combination, are popularly known as Selenium 2. Selenium RC alone is also referred to as Selenium 1.

driver.findElement(By.linkText(“Google”)).click();

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

The above-mentioned link can also be accessed by using the following command.

driver.findElement(By.partialLinkText(“Goo”)).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 with the specified substring and then clicks on it.

43. What is the difference between “type” and “type And Wait for” command?
Answer: If you need to type keyboard key values into a text field of the web application, “type” command will be used. Another reason for its usage is selecting values of the combo box. “type and wait” command is used when your typing is completed and software web page start reloading.

44. What is Selenium? What are the different Selenium components?
Answer: Selenium is one of the most popular automated testing suites. Selenium is designed in a way to support and encourage automation testing of functional aspects of web-based applications and a wide range of browsers and platforms. Due to its existence in the open source community, it has become one of the most accepted tools amongst the testing professionals.

Selenium is not just a single tool or a utility, rather a package of several testing tools and for the same reason, it is referred to as a Suite. Each of these tools is designed to cater to different testing and test environment requirements.

The suite package constitutes of the following sets of tools:

• Selenium Integrated Development Environment (IDE) – Selenium IDE is a record and playback tool. It is distributed as a Firefox Plugin.
• Selenium Remote Control (RC) – Selenium RC is a server that allows a user to create test scripts in the desired programming language. It

45. What is the difference between setSpeed() and sleep() methods?
Answer: Both of these methods delay the speed of execution. The main difference between them is setSpeed sets a speed while will apply delay time before every Selenium operation takes place. thread.sleep() will set up wait only for once.

For Example:

• sleep(5000)- It will wait for 5 seconds. It is executed only once, where the command is written.
• setSpeed(“5000”)- It also will wait for 5 seconds. It runs each command after setSpeed delay by the number of milliseconds mentioned in set Speed.

46. How to mouse hover on a web element using WebDriver?
Answer: BWebDriver offers a wide range of interaction utilities that the user can exploit to automate mouse and keyboard events. Action Interface is one such utility which simulates the single user interactions.
Thus, In the following scenario, we have used Action Interface to mouse hover on a drop-down which then opens a list of options.

47. What are Junit annotations?
Answer: Following are the Junit Annotations:

• Test: Annotation lets the system know that the method annotated as Test is a test method. There can be multiple test methods in a single test script.
• Before: Method annotated as Before lets the system know that this method shall be executed every time before each of the test methods.
• After: Method annotated as @After lets the system know that this method shall be executed every time after each of the test method.
• BeforeClass: Method annotated as @BeforeClass lets the system know that this method shall be executed once before any of the test methods.
• AfterClass: Method annotated as @AfterClass lets the system know that this method shall be executed once after any of the test methods.
• Ignore: Method annotated as @Ignore lets the system know that this method shall not be executed.
• Concurrent execution of test scripts
• Test case dependencies can be set

48. What is the hybrid framework?
Answer: The combination of data-driven and keyword-driven framework is called the hybrid. Here the operations/instructions/keywords in a separate repository (.csv/.xls/.json/DB) and data is in separate (.csv/.xls/.json/DB from data provider) and the tests/driver would read both and perform the actual tests automatically. In this design, we get the best of both methodologies, and it is kind of practice in most of the automation cases.

49. What could be the cause of the Selenium WebDriver test to fail?
Answer: There are some causes of Selenium WebDriver test to fail:

• Selenium WebDriver element waiting to access did not appear on the web page and the operation timed out
• Selenium WebDriver is trying to access not created element
• Selenium WebDriver cannot locate the element, because the locator has 70)

50. How can you find if an element is displayed on the screen?
Answer:
WebDriver facilitates the user with the following methods to check the visibility of the web elements. These web elements can be buttons, drop boxes, checkboxes, radio buttons, labels etc.

isDisplayed()
isSelected()
isEnabled()
Syntax:
isDisplayed():
boolean buttonPresence = driver.findElement(By.id(“gbqfba”)).isDisplayed();
isSelected():
boolean buttonSelected = driver.findElement(By.id(“gbqfba”)).isDisplayed();
isEnabled();