EPAM Systems Automation Test Engineer Lead Interview Questions and Answers

We are using the Selenium framework for automation testing in our project.

• Selenium is a popular open-source automation testing framework

• It supports multiple programming languages like Java, Python, C#, etc.

• Selenium WebDriver is used for automating web applications

• It provides features for browser automation, testing across different browsers, and parallel test execution

Framework structure refers to the organization and layout of the automation framework components.

• Framework structure includes modules, libraries, test scripts, configuration files, and test data.

• It follows a hierarchical structure with layers such as driver scripts, reusable libraries, and test cases.

• Frameworks can be structured as linear, modular, data-driven, keyword-driven, or hybrid.

• Example: In a data-driven framew...read more

findelement returns the first matching element on a webpage, findelements returns a list of all matching elements.

• findelement returns a single WebElement, findelements returns a list of WebElements

• findelement throws NoSuchElementException if no element is found, findelements returns an empty list

• Example: driver.findElement(By.id("exampleId")) vs driver.findElements(By.className("exampleClass"))

Handling multiple tabs in Selenium involves switching between tabs and performing actions on each tab.

• Use getWindowHandles() to get a set of window handles

• Switch to a specific tab using switchTo().window(handle)

• Perform actions on the tab

• Close the tab if needed using driver.close()

Hashmaps are data structures that store key-value pairs and allow for efficient retrieval of values based on keys.

• Hashmaps are also known as dictionaries, maps, or associative arrays.

• They use a hash function to map keys to indices in an underlying array.

• Hashmaps offer constant-time average case complexity for insertion, deletion, and lookup operations.

• Example: HashMap map = new HashMap<>(); map.put("ke

Try and catch blocks are used in programming to handle exceptions and prevent the program from crashing.

• Try block is used to enclose the code that might throw an exception

• Catch block is used to handle the exception thrown in the try block

• It prevents the program from crashing and allows for graceful error handling

• Can also include finally block to execute code regardless of whether an exception is thrown

Inheritance is a concept in object-oriented programming where a class can inherit attributes and methods from another class.

• Allows a class to inherit attributes and methods from another class

• Promotes code reusability and reduces redundancy

• Creates a parent-child relationship between classes

• Derived class can access the properties and methods of the base class

• Example: Class 'Car' can inherit from class 'Vehicle'

Use Selenium WebDriver to find all web elements in a web page

• Instantiate a WebDriver object using Selenium

• Use findElements method to locate all elements on the page

• Store the found elements in a list for further processing

Code to find implicit and explicit wait in automation testing

• For implicit wait, set a global timeout for the driver to wait for elements to be available before throwing an error

• Example: driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);

• For explicit wait, wait for a specific condition to be met before proceeding with the test

• Example: WebDriverWait wait = new WebDriverWait(driver, 10); wait.until(ExpectedCo...read more

Code to find occurrence of a character in a given string

• Iterate through each character in the string

• Count occurrences of the specified character

• Return the total count of occurrences

Project structure refers to the organization of files, folders, and resources within a software project.

• Main folders like src (source code), test (test cases), lib (libraries), docs (documentation)

• Subfolders for specific modules or components

• Configuration files like pom.xml, package.json, etc.

• Build scripts like Jenkinsfile, Dockerfile

• Version control files like .gitignore, .gitattributes

• README.md file for project overvi

Hard assert is a type of assertion in test automation that stops the test execution immediately when a failure occurs.

• Hard assert is used to validate the expected outcome of a test case

• If the assertion fails, the test execution is halted and marked as failed

• It is commonly used in automated test scripts to ensure the correctness of the application under test

Soft assert is a way to continue the execution of a test case even after an assertion failure.

• Soft assert does not stop the execution of the test case when an assertion fails.

• It is useful when you want to log the failure but continue with the remaining test steps.

• Soft assert is commonly used in test automation frameworks like TestNG in Java.

Program to toggle string

• Create an empty string variable

• Loop through each character in the input string

• If the character is uppercase, convert it to lowercase and add to the new string

• If the character is lowercase, convert it to uppercase and add to the new string

• Return the new string

Program to check if string is number

• Use built-in functions like isdigit() or isnumeric()

• Handle negative numbers and decimal points separately

• Consider edge cases like leading/trailing spaces and exponential notation

Swap two strings without using third

• Use XOR operator

• Use addition and subtraction

• Use multiplication and division

To create an alphanumeric string of a given length, we can use a combination of random letters and numbers.

• Determine the length of the string required

• Create a list of all possible alphanumeric characters

• Randomly select characters from the list and append them to the string until the desired length is reached

A framework is a set of guidelines, standards, and tools used to develop and maintain software applications.

• A framework provides a structure for organizing code and building applications

• It includes pre-written code libraries, modules, and functions that can be reused

• Frameworks can be specific to a programming language or technology

• Examples include Selenium for web testing, Robot Framework for automation testing, and Dj

Atos is a leading global IT services company with a strong focus on automation and coding skills.

• Atos is a well-established global IT services company known for its expertise in automation and coding.

• They have a strong reputation for delivering innovative solutions to clients using cutting-edge technologies.

• Working at Atos will provide opportunities to enhance coding skills and work on challenging automation projects.

• A...read more