Webdriver Interview Questions

 1: What is Selenium 2.0

Webdriver is open source automation tool for web application. WebDriver is designed to provide a simpler, more concise programming interface in addition to addressing some limitations in the Selenium-RC API.

2: What is cost of webdriver, is this commercial or open source.

selenium  is open source and free of cost.

3:How you specify browser configurations with Selenium 2.0?

Following driver classes are used for browser configuration

AndroidDriver,

ChromeDriver,

EventFiringWebDriver,

FirefoxDriver,

HtmlUnitDriver,

InternetExplorerDriver,

IPhoneDriver,

IPhoneSimulatorDriver,

RemoteWebDriver

4: How is Selenium 2.0 configuration different than Selenium 1.0?

In case of Selenium 1.0 you need Selenium jar file pertaining to one library for example in case of java you need java client driver and also Selenium server jar file. While with Selenium 2.0 you need language binding (i.e. java, C# etc) and Selenium server jar if you are using Remote Control or Remote WebDriver.

5: Can you show me one code example of setting Selenium 2.0?

WebDriver driver = new FirefoxDriver();

driver.get("https://www.gmail.com");

driver.findElement(By.xpath("XPathLocator)).click();

6: Which web driver implementation is fastest?

HTMLUnitDriver. Simple reason is HTMLUnitDriver does not execute tests on browser but plain http request – response which is far quick than launching a browser and executing tests. But then you may like to execute tests on a real browser than something running behind the scenes

7: What all different element locators are available with Selenium 2.0?

Selenium 2.0 uses same set of locators which are used by Selenium 1.0 – id, name, css, XPath but how Selenium 2.0 accesses them is different. In case of Selenium 1.0 you don’t have to specify a different method for each locator while in case of Selenium 2.0 there is a different method available to use a different element locator. Selenium 2.0 uses following method to access elements with id, name, css and XPath locator –

driver.findElement(By.id("HTMLid"));

driver.findElement(By.name("HTMLname"));

driver.findElement(By.cssSelector("cssLocator"));

driver.findElement(By. className ("ClassName”));

driver.findElement(By. linkText ("LinkText”));

driver.findElement(By. partialLinkText ("PartialLink”));

driver.findElement(By. tagName ("TagName”));

driver.findElement(By.xpath("XPathLocator));

8:  How do I submit a form using Selenium?

WebElement element =  driver.findElement(By.id("ElementID"));

element.submit();

9: How to capture screen shot in Webdriver?

File file= ((TakesScreenshot)driver).getScreenshotAs(OutputType.FILE);

FileUtils.copyFile(file, new File("c:\\name.png"));

10: How do I clear content of a text box in Selenium 2.0?

WebElement element  =  driver.findElement(By.id("ElementID"));

element .clear();

11:  How to execute java scripts function.

JavascriptExecutor js = (JavascriptExecutor) driver;

String title = (String) js.executeScript("pass your java scripts");

12: How to count total number of rows of a table using Selenium 2.0?

List <WebElement> rows = driver.findElements(By.className("//table[@id='tableID']/tr"));

int numberOfRows = rows.size();

13:How to capture page title using Selenium 2.0?

String title =  driver.getTitle()

14:How to store page source using Selenium 2.0?

String pagesource = driver.getPageSource();

15: How to store current url using selenium 2.0?

String currentURL  = driver.getCurrentUrl();

16: How to assert text assert text of webpage using selenium 2.0?

WebElement element  =  driver.findElement(By.id("ElementID"));

String text = element.getText();

Assert.assertEquals("Actual Text", text);

17: How to get element attribute using Selenium 2.0?

WebElement element  =  driver.findElement(By.id("ElementID"));

String attributeValue = element. getAttribute("AttributeName");

18:How to double click on element using selenium 2.0?

WebElement element  =  driver.findElement(By.id("ElementID"));

Actions builder = new Actions(driver);

builder.doubleClick(element).build().perform();

19: How to perform drag and drop in selenium 2.0?

WebElement source  =  driver.findElement(By.id("Source ElementID"));

WebElement destination  =  driver.findElement(By.id("Target ElementID"));

Actions builder = new Actions(driver);

builder.dragAndDrop(source, destination ).perform();

20: How to maximize window using selenium 2.0?

driver.manage().window().maximize();

21: How to click on element?

WebElement element  =  driver.findElement(By.id("ElementID"));

element.click();

21: How to enter text into page element ?

WebElement element  =  driver.findElement(By.id("ElementID")).sendKeys(Username);;

22: How to handle drop down ?

selectByValue:

Select selectByValue = new Select(driver.findElement(By.id(“SelectID_One”)));

selectByValue.selectByValue(VALUE);

selectByVisibleText:

Select selectByVisibleText = new Select (driver.findElement(By.id(“SelectID_Two”)));

selectByVisibleText.selectByVisibleText(TEXT);

selectByIndex:

Select selectByIndex = new Select(driver.findElement(By.id(“SelectID_Three”)));

selectByIndex.selectByIndex(INDEX);

23: How can you find if an element in displayed on the screen?

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(ID)).isDisplayed();

isSelected():

boolean buttonSelected = driver.findElement(By.id(ID)).isDisplayed();

isEnabled():

boolean searchIconEnabled = driver.findElement(By.id(ID)).isEnabled();

24: What are the different types of navigation commands?

Following are the navigation commands:

navigate().back() – The above command requires no parameters and takes back the user to the previous webpage in the web browser’s history.

Sample code:

driver.navigate().back();

navigate().forward() – This command lets the user to navigate to the next web page with reference to the browser’s history.

Sample code:

driver.navigate().forward();

navigate().refresh() – This command lets the user to refresh the current web page there by reloading all the web elements.

Sample code:

driver.navigate().refresh();

navigate().to() – This command lets the user to launch a new web browser window and navigate to the specified URL.

Sample code:

driver.navigate().to(“https://google.com”);

25: How to click on a hyper link using linkText?

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 re-directed 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 find 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.

26: How to handle frame in WebDriver?

An inline frame acronym as iframe is used to insert another document with in the current HTML document or simply a web page into a web page by enabling nesting.

#Select iframe by id

driver.switchTo().frame(“ID of the frame“);

#Locating iframe using tagName

driver.switchTo().frame(driver.findElements(By.tagName(“iframe”).get(0));

#Locating iframe using index

driver.switchTo().frame(0);

#Locating iframe using name

driver.switchTo().frame(“name of the frame”);

#Select Parent Window

driver.switchTo().defaultContent();

27: When do we use findElement() and findElements()?

findElement(): findElement() is used to find the first element in the current web page matching to the specified locator value. Take a note that only first matching element would be fetched.

Syntax:

WebElement element = driver.findElements(By.xpath(“//div[@id=’example’]//ul//li”));

findElements(): findElements() is used to find all the elements in the current web page matching to the specified locator value. Take a note that all the matching elements would be fetched and stored in the list of WebElements.

Syntax:

List <WebElement> elementList = driver.findElements(By.xpath(“//div[@id=’example’]//ul//li”));

28: What is the difference between driver.close() and driver.quit command?

close(): WebDriver’s close() method closes the web browser window that the user is currently working on or we can also say the window that is being currently accessed by the WebDriver. The command neither requires any parameter nor does is return any value.

quit(): Unlike close() method, quit() method closes down all the windows that the program has opened. Same as close() method, the command neither requires any parameter nor does is return any value.

29: Can Selenium handle windows based pop up?

Selenium is an automation testing tool which supports only web application testing. Therefore, windows pop up cannot be handled using Selenium.

30: How can we handle web based pop up?

WebDriver offers the users with a very efficient way to handle these pop ups using Alert interface. There are the four methods that we would be using along with the Alert interface.

void dismiss() – The accept() method clicks on the “Cancel” button as soon as the pop up window appears.

void accept() – The accept() method clicks on the “Ok” button as soon as the pop up window appears.

String getText() – The getText() method returns the text displayed on the alert box.

void sendKeys(String stringToSend) – The sendKeys() method enters the specified string pattern into the alert box.

Syntax:

// accepting javascript alert 

Alert alert = driver.switchTo().alert();

alert.accept();

31: How to mouse hover on a web element using WebDriver?

WebDriver 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.

32: How to retrieve css properties of an element?

The values of the css properties can be retrieved using a get() method:

Syntax:

driver.findElement(By.id(“id“)).getCssValue(“name of css attribute”);

driver.findElement(By.id(“id“)).getCssValue(“font-size”);