Tech Mahindra Automation Test Engineer Interview Questions and Answers

Maven is a build automation tool used primarily for Java projects.

• Maven uses a Project Object Model (POM) to manage dependencies and build process

• It uses a central repository to download dependencies

• Maven has a defined directory structure for projects

• Plugins can be added to extend Maven's functionality

settings.xml is a configuration file used by Maven to customize its behavior.

• It contains information about the local repository location, proxy settings, and server credentials.

• It can be used to define profiles for different environments.

• It is located in the .m2 directory in the user's home directory.

• It can be overridden by using the -s or --settings command-line option.

To link TestNG file in Maven POM, add the TestNG dependency and plugin in POM.xml

• Add TestNG dependency in POM.xml

• Add TestNG plugin in POM.xml

• Configure TestNG plugin to run the TestNG XML file

• Example: org.testng testng 7.4.0 org.apache.maven.plugins maven-surefire-plugin 3.0.0-M5 testng.xml

Select class in Selenium is used to handle dropdowns and multi-select options on a web page.

• Syntax: Select select = new Select(driver.findElement(By.id("dropdownId")));

• Methods: selectByVisibleText(), selectByValue(), selectByIndex(), getOptions(), isMultiple(), getAllSelectedOptions(), deselectAll(), deselectByVisibleText(), deselectByValue(), deselectByIndex()

• Select class is used to handle dropdowns and multi-select o...read more

Jenkins is an open-source automation server used for continuous integration and delivery. It allows creating and managing jobs.

• Jenkins is a popular tool for automating software development processes.

• It provides a web-based interface for creating and managing jobs.

• Jobs in Jenkins are used to define tasks and workflows for building, testing, and deploying software.

• To create a job in Jenkins, navigate to the Jenkins dashb...read more

To point to any other branch in Jenkins, use the 'Branch specifier' field in the 'Source Code Management' section.

• In the Jenkins job configuration, go to the 'Source Code Management' section

• Select the appropriate SCM tool (e.g. Git, SVN)

• In the 'Branch specifier' field, enter the name of the branch you want to point to (e.g. 'develop', 'feature/xyz')

• Save the configuration and run the job

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Polymorphism is the ability of an object to take on many forms. It allows objects of different classes to be treated as if they were the same type.

• Polymorphism is achieved through method overriding and method overloading

• Example: A parent class Animal has a method called makeSound(). Child classes like Dog, Cat, and Cow can override this method to make their own unique sound.

• Another example is method overloading where a...read more

Abstraction is a way of hiding implementation details. An interface is a contract that specifies the behavior of a class.

• Abstraction is achieved through abstract classes and interfaces

• Abstract classes can have both abstract and non-abstract methods

• Interfaces can only have abstract methods and constants

• A class can implement multiple interfaces but can only inherit from one abstract class

• Abstract classes can have constru...read more

SQL query to delete duplicate records

• Use the DELETE statement with a subquery to identify and delete duplicate records

• The subquery should select the duplicate records based on the columns that define uniqueness

• Use the ROW_NUMBER() function to assign a unique number to each row, and delete rows with a number greater than 1

SQL query to get the 10th highest salary from employee table

• Use ORDER BY and LIMIT clauses

• Subquery can be used to get the 10th highest salary