30+ Senior Test Engineer Interview Questions and Answers for Freshers

A circular cake can be cut into 8 equal pieces with 3 cuts only by cutting the cake into quarters and then making a diagonal cut.

• Cut the cake into quarters with two cuts, creating four equal pieces.

• Make a diagonal cut from the center of the cake to the edge, dividing each quarter into two equal pieces.

• This will result in eight equal pieces of cake with only three cuts.

Answering questions related to Selenium and Java for Senior Test Engineer position.

• findelement returns the first matching element on the page while find elements returns a list of all matching elements

• Some exceptions in Java and Selenium are NullPointerException, NoSuchElementException, TimeoutException, ElementNotVisibleException

• Object-Oriented Programming (OOP) concepts include inheritance, encapsulation, abstraction, and polymorphism

OOP is a programming paradigm based on the concept of objects, which can contain data and code to manipulate that data.

• Encapsulation: bundling data and methods that operate on the data into a single unit (object)

• Inheritance: allows a class to inherit properties and behavior from another class

• Polymorphism: ability for objects to be treated as instances of their parent class or their own class

• Abstraction: hiding the complex implementation details and showing only the necessary ...read more

Agile methodologies are iterative approaches to software development that prioritize flexibility and collaboration.

• Agile methodologies involve breaking down projects into smaller, manageable tasks called user stories.

• Key agile ceremonies include daily stand-up meetings, sprint planning meetings, sprint reviews, and sprint retrospectives.

• Daily stand-up meetings are brief check-ins where team members discuss what they worked on yesterday, what they plan to work on today, and an...read more

XPaths are used to locate elements on a website by defining the path of the element in the HTML structure.

• XPaths can be used to locate elements based on their attributes, such as id, class, name, etc.

• Absolute XPaths start with a single forward slash (/) and specify the complete path from the root element.

• Relative XPaths start with a double forward slash (//) and specify the path from the current node.

• Example: //input[@id='username'] - locates an input element with id 'usernam...read more

I have encountered exceptions like NoSuchElementException, ElementNotVisibleException, TimeoutException, StaleElementReferenceException, and InvalidSelectorException.

• NoSuchElementException occurs when an element could not be found in the DOM.

• ElementNotVisibleException is thrown when an element is present in the DOM but not visible on the page.

• TimeoutException is raised when a command does not complete in the specified time.

• StaleElementReferenceException occurs when the elemen...read more

API is a set of protocols and tools for building software applications. WebService is a type of API that uses XML to exchange data over the internet.

• API stands for Application Programming Interface

• API is a set of protocols and tools for building software applications

• WebService is a type of API that uses XML to exchange data over the internet

• WebService is a software system designed to support interoperable machine-to-machine interaction over a network

• APIs can be used to access...read more

TestNG is a testing framework for Java. WebElement represents a single element on a web page, while WebElements represents a collection of elements. 'finally' is a keyword used in exception handling. There are different types of exceptions in Selenium. To handle frames in Selenium, we can use the switchTo() method.

• TestNG is a testing framework for Java

• WebElement represents a single element on a web page

• WebElements represents a collection of elements

• 'finally' is a keyword used...read more

Java oops concepts used in Selenium include inheritance, polymorphism, encapsulation, and abstraction.

• Inheritance is used to create child classes that inherit properties and methods from parent classes.

• Polymorphism allows objects to take on multiple forms and perform different actions based on the context.

• Encapsulation is used to hide implementation details and protect data from external interference.

• Abstraction is used to simplify complex systems by breaking them down into s...read more

Some alternatives for Java collections in other programming languages include Python's lists, C++'s vectors, and JavaScript's arrays.

• Python: lists

• C++: vectors

• JavaScript: arrays

Program to check if a string is a palindrome or not.

• Create a function that takes a string as input

• Remove all non-alphanumeric characters and convert to lowercase

• Compare the string with its reverse to check if it's a palindrome

Yes, capital market refers to the financial market where long-term securities such as stocks and bonds are traded.

• Capital market is a market for long-term securities such as stocks and bonds

• It is a platform for companies to raise funds for their business operations

• Investors can buy and sell securities in the capital market

• Examples of capital markets include the New York Stock Exchange and NASDAQ

I will handle windows handling in real time by using automation tools and scripts to interact with windows and perform necessary actions.

• Utilize automation tools like Selenium or Appium to interact with windows

• Write scripts to automate window handling tasks

• Use APIs provided by the operating system to manipulate windows

• Monitor window events and respond accordingly in real time

Selenium Webdriver is a tool used for automating web applications. It provides methods to interact with web elements.

• Selenium Webdriver is used to automate web applications by interacting with web elements such as buttons, text boxes, etc.

• It provides methods to locate elements on a web page using various locators like ID, class name, CSS selector, etc.

• Once the element is located, actions can be performed on it like clicking, typing, selecting, etc.

• Selenium Webdriver can also ...read more

Cucumber framework can be run parallelly using tools like TestNG or JUnit.

• Use TestNG or JUnit to run cucumber tests in parallel

• Configure test runners to run tests in parallel

• Use Maven or Gradle to manage dependencies and run tests

To reverse a string and find the occurrence of a character in Java.

• Use StringBuilder to reverse the string.

• Use a loop to iterate through the string and count the occurrences of the character.

• Use the charAt() method to access individual characters in the string.

Strings are immutable in Java because they are stored in the String pool and any modification creates a new string object.

• String objects are stored in the String pool to save memory

• Any modification to a string creates a new string object

• Example: String str = "hello"; str.concat("world"); will create a new string object with "helloworld"

Implicit wait is set globally for all elements, while explicit wait is applied to specific elements only.

• Implicit wait is set using 'driver.manage().timeouts().implicitlyWait()' method

• Explicit wait is implemented using WebDriverWait class with ExpectedConditions

• Implicit wait is applied globally for all elements, while explicit wait is applied to specific elements only

• Implicit wait is used to wait for elements to load before performing actions, while explicit wait is used to w...read more

Throw and throws are keywords in Java used for exception handling. Throw is used to throw an exception while throws is used to declare an exception.

• Throw is used to explicitly throw an exception in a method.

• Throws is used to declare the exceptions that a method may throw.

• Throw is followed by an instance of an exception class.

• Throws is followed by the name of the exception class or classes separated by commas.

• Throw is used within a method while throws is used in the method sig...read more

Core Java is the foundation of Java programming language, while collections in Java are data structures used to store and manipulate groups of objects.

• Core Java includes concepts like OOP, inheritance, polymorphism, and exception handling.

• Collections in Java provide interfaces like List, Set, and Map for storing and manipulating data.

• Examples of collections in Java include ArrayList, HashSet, and HashMap.

IPO stands for Input-Process-Output, CA for Corrective Action, PA for Preventive Action, CE for Conformance Evaluation and PE for Process Evaluation.

• IPO is a testing technique that involves testing inputs, processing them and verifying the output.

• CA is a process of identifying and correcting the root cause of a problem.

• PA is a process of identifying and preventing potential problems before they occur.

• CE is a process of evaluating whether a product or service meets the require...read more

To find the xpath of Flipkart product price, inspect the element and use the browser's developer tools.

• Open the Flipkart website and navigate to the product page

• Right-click on the price element and select 'Inspect' or press F12

• In the developer tools, locate the price element in the HTML code

• Right-click on the element in the HTML code and select 'Copy XPath'

• The XPath of the price element will be copied to your clipboard

OOPs is a programming paradigm based on the concept of objects that interact with each other.

• OOPs stands for Object-Oriented Programming.

• It focuses on creating reusable code and reducing complexity.

• It involves four main concepts: encapsulation, inheritance, polymorphism, and abstraction.

• Encapsulation is the process of hiding implementation details from the user.

• Inheritance allows a class to inherit properties and methods from another class.

• Polymorphism allows objects to take ...read more

To take a screenshot in Selenium, use the getScreenshotAs method

• Create a WebDriver instance

• Use the getScreenshotAs method to capture the screenshot

• Save the screenshot to a file using File class

Lambda expressions in Java 8 provide a concise way to represent anonymous functions.

• Lambda expressions are used to provide implementation of functional interfaces.

• They enable functional programming in Java by treating functionality as a method argument.

• Syntax of lambda expressions is (argument) -> (body).

• Example: (int a, int b) -> a + b

Object-oriented programming paradigm and its four pillars: Inheritance, Encapsulation, Abstraction, Polymorphism

• Inheritance: Allows a class to inherit properties and behavior from another class

• Encapsulation: Bundling data and methods that operate on the data into a single unit

• Abstraction: Hiding the complex implementation details and showing only the necessary features

• Polymorphism: Ability to present the same interface for different data types

Getter and setter methods are used to access and modify the values of private variables in a class.

• Create a method with the prefix 'get' followed by the variable name to retrieve its value.

• Create a method with the prefix 'set' followed by the variable name to set its value.

• Ensure the getter method returns the value of the variable and the setter method updates the variable with the passed value.

Agile methodologies are iterative approaches to software development that prioritize flexibility, collaboration, and customer feedback.

• Agile methodologies involve breaking down projects into smaller, manageable tasks called sprints

• They emphasize continuous collaboration between cross-functional teams

• Customer feedback is incorporated throughout the development process to ensure the final product meets user needs

• Popular agile frameworks include Scrum, Kanban, and Extreme Progra...read more

Testing types include functional, non-functional, manual, automated, regression, performance, and security testing.

• Functional testing ensures that the software functions correctly according to the requirements.

• Non-functional testing focuses on aspects like performance, usability, and security.

• Manual testing involves testers executing test cases manually without automation tools.

• Automated testing uses tools to automate the execution of test cases.

• Regression testing checks if n...read more

Types of waits in Selenium include Implicit Wait, Explicit Wait, and Fluent Wait.

• Implicit Wait: Waits for a certain amount of time before throwing a NoSuchElementException.

• Explicit Wait: Waits for a certain condition to occur before proceeding further in the code.

• Fluent Wait: Waits for a condition to be true with a defined polling frequency.

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

Encapsulation is the concept of bundling data and methods that operate on the data into a single unit, preventing direct access to the data from outside the unit.

• Encapsulation helps in data hiding and abstraction

• It allows for better control over data access and modification

• Access to the data is restricted to methods within the class

• Getters and setters are commonly used to access and modify encapsulated data

Test cases for a login page

• Verify successful login with valid credentials

• Verify error message is displayed for invalid credentials

• Verify password is hidden while typing

• Verify 'forgot password' link redirects to correct page