400+ Senior Test Engineer Interview Questions and Answers

API is a set of protocols for building software while Webservice is a type of API that communicates over the internet.

• API is a set of protocols for building software applications

• Webservice is a type of API that communicates over the internet

• API can be used to build both web and mobile applications

• Webservice is specifically designed for communication between different applications

• API can be RESTful or SOAP-based

• Webservice is typically SOAP-based

Regression testing is the process of retesting modified software to ensure that the existing functionalities are not affected.

• It is performed after making changes to the software to identify any new defects or regression bugs.

• It helps in ensuring that the previously working features are still functioning correctly.

• Regression test cases are typically derived from the existing test cases.

• It can be performed manually or using automated testing tools.

• Examples: retesting a bug fix...read more

Test case for refund system in gpay

• Verify refund is initiated when user requests for it

• Check if refund amount is correct

• Ensure refund is credited to user's account

• Test for different scenarios like partial refund, full refund, etc.

• Validate error messages for invalid refund requests

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

Selenium was used to automate testing of dynamic elements and AJAX calls in the single page application.

• Used Selenium WebDriver to locate and interact with dynamic elements

• Implemented explicit waits to handle AJAX calls and page loading

• Used Page Object Model design pattern to organize and maintain test code

• Utilized Selenium Grid for parallel testing on multiple browsers and platforms

File uploads in Selenium can be handled using the sendKeys() method to input the file path.

• Use the sendKeys() method to input the file path in the file upload field

• Make sure the file path is correct and accessible

• Verify the file upload by checking for the presence of the uploaded file on the page

Ensuring tester reports good quality defects by implementing thorough testing processes and clear communication.

• Implementing comprehensive test cases to cover all possible scenarios

• Utilizing automation tools to increase efficiency and accuracy

• Regularly reviewing and verifying reported defects

• Providing clear and detailed descriptions of defects found

• Communicating effectively with developers to ensure understanding and resolution

Yes, it is possible to automate flash items using automation tools and scripts.

• Automation tools like Selenium can be used to automate flash items on web applications.

• Flash automation can be achieved by interacting with the flash object using JavaScript.

• Automated testing frameworks like TestComplete also support automation of flash elements.

Java program to segregate values from given array of strings

• Iterate through each string in the array

• Check each character in the string and segregate based on type (alphabet, digit, special character)

• Store segregated values in separate arrays or data structures

Answers to questions related to Senior Test Engineer position

• 1. Framework is a set of guidelines and practices used to develop and execute automated tests

• 2. JUnit annotations are used to define the behavior of test methods and to control the test execution flow

• 3. Locators in Selenium are used to identify web elements on a web page, and can be created using various methods such as ID, name, class name, etc.

• 4. Common errors in automation scripts include element not found, stale...read more

I have used JUnit for performing unit testing in Java projects.

• JUnit is a popular unit testing framework for Java

• It provides annotations like @Test to define test methods

• JUnit assertions like assertEquals are used to verify expected results

Object-oriented programming concepts that help in building modular and reusable software.

• Encapsulation - bundling data and methods that operate on that data within a single unit

• Inheritance - creating new classes from existing ones, inheriting their properties and methods

• Polymorphism - ability of objects to take on many forms, allowing different objects to be treated as if they were the same type

• Abstraction - hiding implementation details and showing only the necessary feature...read more

A sample Capl program to send a message cyclically.

• Use the 'on timer' event to send the message at a fixed interval

• Create a message object and set its data and length

• Use the 'output' function to send the message

• Use the 'setTimer' function to set the timer for the next cycle

Annotations in Cucumber are tags used to define metadata for features, scenarios, and steps.

• Annotations start with the @ symbol and can be used to organize and filter scenarios

• Annotations can be used to define preconditions and postconditions for scenarios

• Examples: @SmokeTest, @RegressionTest, @Before, @After

My Hil environment consists of various tools and technologies for testing and automation.

• We use tools like Selenium, Appium, JMeter, and SoapUI for testing.

• We also use Jenkins for continuous integration and deployment.

• Our environment includes both physical and virtual machines for testing.

• We have a variety of operating systems and browsers for testing compatibility.

• We use various scripting languages like Java, Python, and Ruby for automation.

• We have a dedicated team for perfo...read more

Implicit wait is a time delay applied globally in Selenium, while explicit wait is a time delay applied to a specific element.

• Implicit wait is used to wait for a certain amount of time before throwing an exception if the element is not found.

• Explicit wait is used to wait for a certain condition to occur before proceeding with the next step.

• Implicit wait is applied globally and is set once for the entire test script.

• Explicit wait is applied to a specific element and can be cus...read more

Conditional signoff is a process where a specific set of conditions must be met before a project or task can be approved.

• Conditional signoff ensures that all requirements have been met before approval

• It involves a set of conditions that must be met before signoff can be given

• It is used to ensure that the project or task meets the necessary standards

• Examples of conditions include passing all tests, meeting performance requirements, and adhering to design specifications

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

Vehicle testing is done on the actual vehicle while bench testing is done on a simulated environment.

• Vehicle testing is done on the actual vehicle while bench testing is done on a simulated environment

• Vehicle testing is more expensive and time-consuming than bench testing

• Bench testing is used to test individual components or systems before integrating them into the vehicle

• Examples of bench testing include testing of engines, brakes, and suspension systems

• Examples of vehicle t...read more

Validations are checks performed on data to ensure it meets certain criteria or requirements.

• Validations are done to ensure data accuracy, completeness, and consistency.

• They can be performed on user input, system output, or data stored in a database.

• Examples include checking for required fields, data type, length, format, and range.

• Validations can also be used to prevent security vulnerabilities such as SQL injection or cross-site scripting.

• Automated testing tools can be used...read more

I have used frameworks such as Selenium, JUnit, TestNG, and Cucumber in my projects.

• Selenium

• JUnit

• TestNG

• Cucumber

A search engine works by crawling web pages, indexing content, and ranking results based on relevance.

• Crawling: Search engine bots visit web pages and follow links to discover content.

• Indexing: The search engine stores information about web pages in a database for quick retrieval.

• Ranking: Algorithms analyze the indexed content to determine the relevance of each page to a user's query.

• Results: The search engine displays a list of relevant pages based on the ranking.

• Examples: G...read more

Discuss with the developer to understand their perspective and provide additional information or evidence to support the bug report.

• Initiate a discussion with the developer to understand their reasoning for not accepting the bug.

• Provide additional information or evidence to support the bug report, such as screenshots, logs, or test cases.

• Collaborate with the developer to reproduce the issue and demonstrate the bug in action.

• Seek input from other team members or stakeholders t...read more

The 'super' keyword in Java is used to refer to the immediate parent class object.

• Used to access methods and variables of the parent class

• Used to call the parent class constructor

• Helps in achieving method overriding

Drop, truncate and delete are SQL commands used to remove data from a table.

• DROP command removes the entire table and its data

• TRUNCATE command removes all data from the table but keeps the table structure

• DELETE command removes specific rows from the table based on a condition

• DROP and TRUNCATE cannot be rolled back, while DELETE can be

• DROP and TRUNCATE are faster than DELETE

To print vowels in a given string, iterate through each character and check if it is a vowel.

• Create a string variable to store vowels (aeiouAEIOU)

• Iterate through each character in the given string

• Check if the character is present in the vowels string

• If yes, print the character

Cucumber is a BDD (Behavior Driven Development) tool used for testing software.

• Cucumber uses Gherkin syntax to write test cases in a human-readable format

• It allows collaboration between developers, testers, and business stakeholders

• Cucumber supports multiple programming languages such as Java, Ruby, and Python

• It helps in automating acceptance tests and ensures that the software meets the requirements

• Cucumber can be integrated with other testing frameworks like Selenium and Ap...read more

Sanity testing is a narrow and deep testing approach while smoke testing is a wide and shallow testing approach.

• Sanity testing is done to check if the critical functionalities of the application are working fine after a small change is made.

• Smoke testing is done to check if the application is stable enough to proceed with further testing.

• Sanity testing is a subset of regression testing while smoke testing is a subset of acceptance testing.

• Sanity testing is usually done by dev...read more

Triggers in SQL are special stored procedures that are automatically executed or fired when certain events occur in a database.

• Triggers can be used to enforce business rules, maintain referential integrity, audit changes, and automate tasks.

• There are two main types of triggers: BEFORE triggers and AFTER triggers.

• Example: A trigger can be set to automatically update a timestamp column whenever a row is inserted or updated in a table.

I would gather information from stakeholders, previous test cases, and the application itself to write test cases without documents.

• Consult with stakeholders to gather requirements and functionality details

• Review previous test cases and test plans for similar features

• Explore the application to understand its functionality and potential areas for testing

• Use experience and knowledge of testing best practices to create comprehensive test cases

Test plan outlines the overall testing approach, while test design specifies how individual test cases will be created and executed.

• Test plan is a high-level document outlining testing objectives, resources, schedule, and scope

• Test design is a detailed document specifying test cases, test data, and expected results

• Test plan focuses on the overall testing strategy, while test design focuses on the specifics of individual tests

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

CSS selectors can be found using browser developer tools or by inspecting the HTML code.

• Use browser developer tools to inspect elements and find their CSS selectors

• Inspect the HTML code to find class or ID names that can be used as selectors

• Use CSS selector reference guides to learn about different types of selectors

• Experiment with different selectors to find the most efficient and specific one for your needs

Reverse a string without using strRev function.

• Create an empty string to store the reversed string.

• Loop through the original string from the end to the beginning.

• Append each character to the empty string.

• Return the reversed string.

• Alternatively, convert the string to an array of characters, reverse the array, and then join the characters back into a string.

Identify failed test cases out of 100 and rerun them

• Analyze test results to identify failed test cases

• Create a list of failed test cases

• Rerun only the failed test cases

A surrogate key is a unique identifier assigned to a record in a database when a natural primary key is not available or practical to use.

• Surrogate keys are often used in data warehousing and ETL processes.

• They can be generated using a variety of methods, such as auto-incrementing integers or UUIDs.

• Surrogate keys can improve performance and simplify database design.

• Example: Using a surrogate key instead of a customer's name as the primary key in a customer table.

• Example: Usin...read more

The preferable locator for dynamic elements is XPath.

• XPath is more powerful and flexible compared to other locators like ID or class name

• XPath can locate elements based on their attributes, position, text, etc.

• Using XPath allows for more precise and reliable element identification

To right-click in Java, use the Robot class to simulate a mouse click event.

• Create an instance of the Robot class

• Move the mouse to the desired location using the mouseMove() method

• Simulate a right-click event using the mousePress() and mouseRelease() methods with the InputEvent.BUTTON3_MASK parameter

Authorization and authentication are security measures used in transactions to ensure only authorized users can access and perform actions on the system.

• Authentication verifies the identity of the user, usually through a username and password.

• Authorization determines what actions the user is allowed to perform based on their role or permissions.

• Both are important in ensuring the security and integrity of the system.

• Examples include logging into a bank account, accessing a sec...read more

Postman is a popular tool for API testing. It supports various types of requests, response codes, efficient coding in JavaScript, and testing in relevant frameworks.

• Postman supports GET, POST, PUT, DELETE, PATCH, and other types of requests.

• Response codes in Postman include 200 for success, 404 for not found, 500 for server error, etc.

• Efficient coding in JavaScript involves using asynchronous functions, error handling, and modular code.

• API testing in relevant frameworks like ...read more

1. Static variable is a variable that belongs to the class itself, rather than instances of the class. 2. JDK is Java Development Kit, JRE is Java Runtime Environment, and JVM is Java Virtual Machine. 3. 'finally' is a block of code that is always executed, 'finalise' is a method used for cleanup operations. 4. Type casting is converting one data type to another.

• Static variable is declared using the 'static' keyword and retains its value throughout the program.

• JDK includes to...read more

Debugging login button and possible solutions

• Check if the button is properly linked to the login function

• Verify if the login credentials are correct

• Ensure that the button is visible and clickable

• Check for any error messages or pop-ups

• Inspect the code for any syntax or logical errors

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

Waterfall is a linear sequential approach while Agile is an iterative approach.

• Waterfall follows a sequential process while Agile follows an iterative process.

• In Waterfall, testing is done at the end of the development cycle while in Agile, testing is done continuously throughout the development cycle.

• Waterfall is more suitable for projects with well-defined requirements while Agile is more suitable for projects with evolving requirements.

• Waterfall is less flexible while Agil...read more

OOPS is used extensively in our project for creating modular and reusable code.

• We use inheritance to create a base class for common functionalities and derive child classes for specific functionalities.

• We use encapsulation to hide the implementation details of a class and provide a clean interface for other modules to interact with it.

• We use polymorphism to allow objects of different classes to be treated as if they are of the same class, enabling code reuse and flexibility.

• W...read more