Infosys QA Test Lead Interview Questions and Answers

Selectors in Selenium are used to identify web elements on a webpage for automation testing.

• Selectors include ID, class name, name, tag name, link text, partial link text, CSS selector, and XPath.

• ID selector is the fastest and most reliable, while XPath is the most powerful but slower.

• CSS selectors are commonly used due to their flexibility and readability.

• Example: driver.findElement(By.id("elementID"));

Wait statements in Selenium are used to pause the execution of the test script for a specified amount of time.

• Wait statements are used to handle synchronization issues in test automation scripts.

• There are two types of wait statements in Selenium: Implicit Wait and Explicit Wait.

• Implicit Wait sets a default waiting time for the elements to be available before throwing an exception.

• Explicit Wait allows the test script to...read more

A program to write the Fibonacci series using iterative or recursive methods.

• Use a loop to generate Fibonacci series iteratively

• Use recursion to generate Fibonacci series recursively

• Start with 0 and 1 as the first two numbers in the series

• Add the previous two numbers to get the next number in the series

Collection framework is a unified architecture for representing and manipulating collections of objects.

• Provides interfaces (List, Set, Map) and classes (ArrayList, HashSet, HashMap) for storing and manipulating groups of objects

• Offers algorithms for searching, sorting, and manipulating collections

• Promotes code reusability and efficiency in handling collections

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

• Iterate through each character in the string and increment a counter for each character encountered.

• Use a hashmap to store the count of each character for efficient counting.

• Handle edge cases such as empty string or null input.

Java OOPs concepts are used in automation framework design for better code organization and reusability.

• Encapsulation: Used to hide the internal implementation details of classes and provide access through methods.

• Inheritance: Allows for code reuse by creating parent-child relationships between classes.

• Polymorphism: Enables methods to behave differently based on the object they are called on.

• Abstraction: Helps in defin...read more

OTP can be handled by generating, sending, and verifying it in automated tests.

• Generate OTP using a random number generator

• Send OTP to the user via email, SMS, or any other communication channel

• Verify OTP entered by the user against the generated OTP

To start Appium in automation, you need to install Appium server, set up desired capabilities, and run the server.

• Install Appium server using npm install -g appium

• Set up desired capabilities in your test script

• Start the Appium server using the command appium

Types of mobile apps include native apps, web apps, and hybrid apps.

• Native apps are developed for specific platforms like iOS or Android

• Web apps are accessed through a web browser and do not need to be downloaded from an app store

• Hybrid apps combine elements of both native and web apps

• Examples include Instagram (native), Twitter (web), and Uber (hybrid)

Program to remove duplicate letters in a string

• Iterate through the string and keep track of seen characters in a set

• Append characters to a new string only if they are not already in the set

• Return the new string without duplicate letters

Swipe action in mobile devices can be performed using swipe() method in Appium or TouchAction class in Selenium.

• Use swipe() method in Appium to perform swipe action in mobile devices

• Alternatively, use TouchAction class in Selenium for swipe action

• Specify the start and end coordinates for the swipe action

• Adjust the duration and speed of the swipe as needed

Java program to print sum of digits from a given string

• Iterate through each character in the string

• Check if the character is a digit using Character.isDigit() method

• Convert the digit character to integer using Character.getNumericValue() method

• Sum up all the digits found in the string

OOPs concepts used in the framework include inheritance, polymorphism, encapsulation, and abstraction.

• Inheritance is used to create a parent-child relationship between classes. For example, a base class 'Page' can be inherited by 'HomePage' and 'LoginPage' classes.

• Polymorphism allows objects of different classes to be treated as objects of a common superclass. For instance, a 'click' method can be implemented different...read more

Polymorphism is the ability of a single function or method to operate on different types of data.

• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• There are two types of polymorphism: compile-time (method overloading) and runtime (method overriding).

• Example of compile-time polymorphism: function overloading in Java.

• Example of runtime polymorphism: method overriding in Java

Java program to print the sum of elements in a string array.

• Convert each element in the string array to an integer using Integer.parseInt()

• Sum up all the integers to get the total sum

Joins in SQL are used to combine rows from two or more tables based on a related column between them.

• Joins are used to retrieve data from multiple tables based on a related column.

• Types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN.

• Example: SELECT * FROM table1 INNER JOIN table2 ON table1.column = table2.column;

TestNG is a testing framework for Java that supports various testing levels and annotations.

• TestNG allows for easy configuration of test suites, test cases, and test methods.

• It supports parallel execution of tests, data-driven testing, and parameterization.

• TestNG provides detailed test reports and allows for grouping of test methods.

• Annotations like @Test, @BeforeSuite, @AfterSuite, etc., help in defining test methods

POM is a design pattern in automation testing where web pages are represented as classes, and the interactions are defined as methods.

• POM helps in creating a clear separation between test scripts and page objects.

• It improves test maintenance and readability.

• Page classes contain locators and methods to interact with the elements on the page.

• Test scripts call these methods to perform actions on the page.

• Example: LoginPag...read more

As a QA lead, my day to day activities involve overseeing testing processes, coordinating with team members, creating test plans, and ensuring quality standards are met.

• Coordinate with team members to assign testing tasks and ensure deadlines are met

• Create and review test plans, test cases, and test scripts

• Conduct regular meetings with the team to discuss progress and address any issues

• Collaborate with developers and o...read more

API testing is a type of software testing that involves testing APIs directly to ensure they meet functionality, reliability, performance, and security requirements.

• API testing involves testing the functionality, reliability, performance, and security of APIs.

• It focuses on verifying that the API meets its specifications and works as expected.

• API testing can be done manually or using automated tools like Postman or Soap...read more

I log bugs by documenting detailed steps to reproduce, including screenshots and logs.

• Document detailed steps to reproduce the bug

• Include screenshots or videos if applicable

• Attach relevant logs or error messages

• Assign severity and priority levels to the bug

• Track bug status and resolution in a bug tracking tool

Agile methodology is a software development approach that emphasizes flexibility, collaboration, and iterative development.

• Focus on delivering working software in short iterations

• Emphasizes collaboration between cross-functional teams

• Allows for changes and adjustments throughout the development process

• Common practices include daily stand-up meetings, sprint planning, and retrospectives

Selenium framework is a set of tools, libraries, and best practices used for automated testing of web applications.

• Selenium framework allows for writing and executing automated tests for web applications.

• It provides features like test case management, reporting, and integration with CI/CD tools.

• Popular frameworks built on top of Selenium include TestNG, JUnit, and Cucumber.

• Selenium WebDriver is a key component of the f...read more