Tata Elxsi Hil Test Engineer Interview Questions and Answers

Q1. What is a constructor and it's purpose?
Ans. 
A constructor is a special type of method in a class that is automatically called when an object of that class is created.
• Constructors have the same name as the class they belong to

• They are used to initialize the object's state or perform any necessary setup

• Constructors can have parameters to customize the initialization process

• Example: public class Car { public Car(String color) { this.color = color; } }
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Q2. Can you override a Static Method?
Ans. 
Yes, a static method can be overridden in Java using the concept of method hiding.
• In Java, static methods cannot be overridden in the traditional sense like instance methods.

• When a subclass defines a static method with the same signature as a static method in the superclass, it is called method hiding.

• Method hiding does not follow polymorphism and is resolved at compile time based on the reference type.

• Example: class...read more
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Q3. Can you create a Static local variable inside a Static method
Ans. 
Yes, a static local variable can be created inside a static method.
• Yes, a static local variable can be declared inside a static method in programming languages like C++.

• Static local variables retain their values between function calls.

• Example: static void myStaticMethod() { static int count = 0; count++; }
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Q4. What is the memory allocation for a String?
Ans. 
String memory allocation is dynamic and depends on the length of the string.
• String memory allocation is dynamic and can change based on the length of the string.

• In Java, a String object is stored in the heap memory.

• Each character in a String typically takes up 2 bytes of memory.

• String objects in Java are immutable, meaning once a String object is created, it cannot be changed.
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Q5. Can you create a Static method inside an Abstract class or Interface?
Ans. 
Yes, you can create a static method inside an abstract class or interface.
• Static methods can be defined in interfaces since Java 8.

• Static methods in interfaces are used for providing utility methods that are not tied to any specific instance of the interface.

• Static methods in abstract classes can be used for common functionality that does not require an instance of the class.
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Q6. What is the Parent class of Java?
Ans. 
The parent class of Java is the Object class.
• All classes in Java are directly or indirectly derived from the Object class.

• The Object class is the root class in Java's class hierarchy.

• It provides methods that are common to all objects in Java, such as toString(), equals(), and hashCode().
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Q7. What is Window Handles in Selenium?
Ans. 
Window Handles in Selenium are unique identifiers used to handle multiple browser windows in a Selenium test script.
• Window Handles are unique alphanumeric strings assigned to each browser window opened by Selenium.

• They are used to switch between different browser windows during a test script execution.

• Window Handles can be obtained using getWindowHandles() method in Selenium.

• Example: Set handles = driver.getWindowHandl
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Q1. Appium architecture
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Q2. Java oops concepts n where did u apply that in automation framework
Ans. 
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
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Q3. How to handle otp
Ans. 
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
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Q4. How start appium in automation
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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
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Q5. What are the types of mobile apps
Ans. 
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)
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Q6. Program to remove duplicate letters in a string
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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
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Q7. How to perform swipe action in mobile devices
Ans. 
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
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Q1. Basic selenium and Basic Java
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Q1. Java Program - Reverse a string Selenium - stale element
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Reverse a string using Java program and handle stale element in Selenium
• Create a Java program to reverse a string using StringBuilder or char array

• In Selenium, handle stale element exception by refreshing the element or using WebDriverWait

• Example: Java program - input: 'hello', output: 'olleh'; Selenium - handle stale element by refreshing the element before interacting with it
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Q1. What is your expected salary
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My expected salary is based on my experience, skills, and the market rate for Automation Test Engineers.
• I have researched the average salary range for Automation Test Engineers in this location.

• I am looking for a competitive salary that reflects my expertise in automation testing.

• I am open to negotiation based on the overall compensation package offered.
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Q1. ETL tetsing methods, schema, SCD types, string function, some query based on scenario
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Q2. L2 round - rank, dense rank, rownumber, types of fact, dimensions, duplicate query
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Q1. Other company offer questions
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Q2. Other company offer
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Q1. Questions are easy but they are more interested in your other company offer
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Q2. All questions solved but atill interested in other offer
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Q1. Tell me your Self introduce
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Q2. Tell me project structure
Ans. 
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
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20 aptitude questions and 50 technical questions

Q1. Tell me about your self
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Q2. Explain automation framework
Ans. 
Automation framework is a set of guidelines, rules, and tools that help in creating and executing automated tests.
• Automation framework provides structure and guidelines for creating automated tests

• It helps in organizing test scripts, data, and results

• Frameworks can be data-driven, keyword-driven, or hybrid

• Examples of automation frameworks include Selenium WebDriver, TestNG, and Robot Framework
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Q3. Java code for sorting without using built in function
Ans. 
Sorting array of strings in Java without using built-in functions
• Create a custom sorting algorithm like bubble sort, selection sort, or insertion sort

• Compare each pair of strings and swap them if necessary to sort in ascending order

• Repeat the process until the array is fully sorted
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Q4. Explain testng annotations and how will we use annotation in our framework
Ans. 
TestNG annotations are used to control the flow of test methods and provide additional information about the test methods.
• TestNG annotations are used to mark methods as test methods, setup methods, teardown methods, etc.

• Annotations like @Test, @BeforeMethod, @AfterMethod, @BeforeClass, @AfterClass, @BeforeSuite, @AfterSuite are commonly used in TestNG framework.

• Annotations help in organizing and prioritizing test metho...read more
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Q5. What is testng listener
Ans. 
TestNG listener is an interface that allows users to customize the test execution process.
• TestNG listeners can be used to perform actions before or after a test method is run.

• Listeners can be used to generate logs, take screenshots, or perform other custom actions during test execution.

• Examples of TestNG listeners include ITestListener, ISuiteListener, and IInvokedMethodListener.
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Q6. What is overriding and where it is used in automation framework
Ans. 
Overriding is a concept in object-oriented programming where a subclass provides a specific implementation of a method that is already provided by its superclass.
• Overriding allows a subclass to provide a specific implementation of a method that is already provided by its superclass

• It is used in automation frameworks to customize or extend the functionality of existing methods or classes

• In automation testing, overriding...read more
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Q7. Explain bdd hooks and tags
Ans. 
BDD hooks and tags are used in Behavior-Driven Development to set up preconditions and execute actions before or after scenarios, and to categorize and filter scenarios.
• BDD hooks are used to set up preconditions and execute actions before or after scenarios

• Tags are used to categorize and filter scenarios based on certain criteria

• Hooks can be used to perform setup and teardown actions, such as initializing test data or ...read more
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Q8. Explain bdd background keyword
Ans. 
BDD background keyword is used to define common preconditions for all scenarios in a feature file.
• Used at the beginning of a feature file to define common preconditions

• Helps in setting up the initial state for all scenarios in the feature file

• Reduces duplication of steps in scenarios by defining them once in the background
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Q9. Explain ci/cd pipeline using jenkins
Ans. 
CI/CD pipeline using Jenkins automates the process of integrating code changes and deploying them to production.
• Jenkins is a popular automation server used for CI/CD

• CI/CD stands for Continuous Integration/Continuous Deployment

• In a CI/CD pipeline, code changes are automatically built, tested, and deployed

• Jenkins pipelines can be defined using a Jenkinsfile which specifies the stages and steps of the pipeline

• Example: Che...read more
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Q10. Explain rest assured and write a code for post and verify the response
Ans. 
Rest Assured is a Java library for testing RESTful APIs. It simplifies API testing by providing a fluent interface to make HTTP requests and validate responses.
• Rest Assured is commonly used in API automation testing to validate the functionality of RESTful APIs.

• It allows testers to easily make HTTP requests, set headers, parameters, and body, and validate the response.

• Here is an example code snippet for posting data an...read more
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