Infinite Computer Solutions Automation Test Engineer Interview Questions and Answers

A program to count the number of integers and characters in a given string.

• Iterate through each character in the string and check if it is an integer or a character.

• Use isdigit() function to check if a character is an integer.

• Keep separate counters for integers and characters.

• Return the counts of integers and characters at the end.

Final is a keyword in Java used to restrict inheritance, finally is a block used in exception handling, and finalize is a method used for cleanup.

• Final is a keyword in Java used to restrict inheritance or prevent method overriding.

• Finally is a block used in exception handling to ensure a piece of code is always executed, whether an exception is thrown or not.

• Finalize is a method in Java used for cleanup operations befo

Assertion is a statement that checks if a condition is true, while validation/verification is the process of confirming that a product meets specified requirements.

• Assertion is used to validate the expected outcome of a test case.

• Validation/verification is the process of checking if the product meets the specified requirements.

• Assertions are typically used within test scripts to verify the expected behavior of the syst...read more

Find the 2nd duplicate element in an array, identify missing element in sequential array, and reverse a statement.

• To find the 2nd duplicate element in an array, iterate through the array and keep track of elements using a hashmap.

• To identify the missing element in a sequential array, calculate the sum of all elements and find the difference with the expected sum.

• To reverse a statement, split the statement into words, r...read more

HashMap allows null values and keys, while HashTable does not. HashMap is not synchronized, making it faster in performance compared to HashTable.

• HashMap allows null values and keys, while HashTable does not.

• HashMap is not synchronized, making it faster in performance compared to HashTable.

• HashMap is preferred for non-thread-safe applications, while HashTable is preferred for thread-safe applications.

Stale Element Reference Exception occurs when an element is no longer attached to the DOM.

• Occurs when an element is located in the DOM, but later becomes detached or deleted

• Common in dynamic web applications where elements are frequently changing

• Can be resolved by re-locating the element before interacting with it

Collection is an interface in Java that represents a group of objects, while Collections is a utility class in Java that contains static methods for operating on collections.

• Collection is an interface in Java, while Collections is a utility class.

• Collection is used to represent a group of objects, while Collections is used for operations on collections like sorting, searching, etc.

• Example: List is a Collection interfac...read more

POM stands for Page Object Model. It is a design pattern used in test automation to create reusable and maintainable code.

• POM helps in separating the test scripts from the web elements, making the code more organized and easier to maintain.

• It improves code reusability by creating separate classes for each web page, containing all the elements and actions related to that page.

• POM reduces code duplication and enhances te...read more

BDD is a software development process that encourages collaboration between developers, QA, and non-technical stakeholders.

• BDD stands for Behavior-Driven Development

• It focuses on defining the behavior of the system through examples in plain text

• Uses a common language (Gherkin syntax) to describe requirements and tests

• Helps in improving communication and understanding between team members

• Popular BDD tools include Cucumb

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

We used a modular framework with Page Object Model design pattern for our project.

• Modular framework helped in organizing test scripts into separate modules for better maintainability

• Page Object Model design pattern facilitated reusability of code by separating page objects from test scripts

• Used TestNG for test execution and reporting

• Implemented data-driven testing using Excel sheets for test data

• Integrated with Jenkins