TCS Senior Test Engineer Interview Questions and Answers

To get elements from a drop down, I use Selenium WebDriver's Select class

• Use Select class from Selenium WebDriver to interact with drop down elements

• Identify the drop down element using its locator

• Instantiate a Select object with the drop down element

• Use Select object's methods like selectByVisibleText(), selectByValue(), selectByIndex() to choose an option

Select is a class in Selenium WebDriver.

• Select is used for handling dropdowns in Selenium WebDriver.

• It provides methods to select options by visible text, value, or index.

• Example: Select dropdown = new Select(driver.findElement(By.id("dropdown")));

• Example: dropdown.selectByVisibleText("Option 1");

To read data from Excel, use libraries like Apache POI or Openpyxl in Python.

• Use libraries like Apache POI or Openpyxl in Python to read data from Excel files

• Identify the Excel file and specify the sheet and cell from which to read data

• Use appropriate methods provided by the library to extract data from the specified cell or range

I have used various types of test automation frameworks including data-driven, keyword-driven, and behavior-driven frameworks.

• Data-driven framework: Used to separate test data from test scripts, allowing for easier maintenance and scalability. Example: TestNG with Excel or CSV files.

• Keyword-driven framework: Utilizes keywords to represent actions or operations, making test scripts more readable and reusable. Example: R...read more

Array is a fixed-size data structure while ArrayList is a dynamic-size data structure in Java.

• Array is a fixed-size data structure in Java, while ArrayList is a dynamic-size data structure.

• Arrays can hold primitive data types and objects, while ArrayList can only hold objects.

• Arrays require a specified size during initialization, while ArrayList can dynamically resize itself.

• Arrays use square brackets [] for declaratio...read more

Array list stores elements in contiguous memory locations, while linked list stores elements in nodes with pointers to the next node.

• Array list allows random access to elements based on index, while linked list requires traversal from the beginning to access elements.

• Insertions and deletions are faster in linked list as it only requires updating pointers, while in array list it may require shifting elements.

• Array list ...read more

Different types of exceptions include checked, unchecked, runtime, and custom exceptions.

• Checked exceptions are checked at compile time and must be handled using try-catch or throws keyword.

• Unchecked exceptions are not checked at compile time and can be handled using try-catch or left unhandled.

• Runtime exceptions are unchecked exceptions that occur at runtime, such as NullPointerException or ArrayIndexOutOfBoundsExcept...read more

Pushing code to GitHub involves using Git commands to add, commit, and push changes to a remote repository.

• Use 'git add .' to stage all changes

• Use 'git commit -m 'Your commit message here'' to commit changes

• Use 'git push origin master' to push changes to the master branch on GitHub

Types of waits include implicit, explicit, and fluent waits in test automation.

• Implicit wait: Wait for a certain amount of time before throwing an exception.

• Explicit wait: Wait for a certain condition to be met before proceeding.

• Fluent wait: Wait for a condition with a defined maximum wait time and polling frequency.

Selenium 4 features include improved relative locators, new grid architecture, and better support for Chrome DevTools Protocol.

• Improved relative locators for more flexible element locating

• New grid architecture for better scalability and performance

• Better support for Chrome DevTools Protocol for enhanced debugging capabilities

Java code to find second largest string in an array of strings

• Create an array of strings

• Sort the array in descending order based on string length

• Return the second element in the sorted array

Use window handles to switch to child window, extract text, and input in another child window

• Use getWindowHandles() to get all window handles

• Switch to child window using switchTo().window() method

• Extract text from the first child window

• Switch to another child window and input the extracted text