L&T Technology Services Senior Test Engineer Interview Questions, Process, and Tips

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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20 aptitude questions and 50 technical questions

Q1. Tell me about your self
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Q2. Explain automation framework
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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
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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
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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
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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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Q1. Basic SDET related Manual and Automation Codes
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Q2. Manager Round is about your work nature attentiveness in work
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Q1. Describe current project framework
Ans. 
Our current project framework is based on Selenium WebDriver and TestNG for automated testing of web applications.
• Utilizing Selenium WebDriver for browser automation

• Implementing TestNG for test case management and execution

• Integrating with Jenkins for continuous integration

• Using Page Object Model design pattern for better test maintenance
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Q2. Progam to get character count from string input
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Program to count characters in a string input
• Use a loop to iterate through each character in the string

• Use a dictionary to store the count of each character

• Handle both uppercase and lowercase characters separately
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Q1. Selenium basic questions
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Q2. Java OOPs question
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Q1. What is defect tracking
Ans. 
Defect tracking is the process of identifying, documenting, prioritizing, and resolving issues or bugs in software.
• Defect tracking involves recording details of defects found during testing.

• Each defect is assigned a unique identifier for tracking purposes.

• Defects are categorized based on severity and priority to determine the order in which they should be fixed.

• Defect tracking tools like Jira, Bugzilla, or HP ALM are c...read more
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Q2. What is the regression testing
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Regression testing is the process of retesting a software application to ensure that new code changes have not adversely affected existing functionality.
• Regression testing is performed after code changes to verify that the existing functionality still works correctly.

• It helps in identifying any defects introduced by new code changes.

• Automated testing tools are often used for regression testing to save time and effort.

• R...read more
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Q3. How you will write the test scenario for elevator
Ans. 
Test scenarios for an elevator to ensure proper functionality and safety
• Test the elevator buttons for all floors

• Test emergency stop button functionality

• Test door opening and closing mechanism

• Test elevator capacity by loading it with maximum weight limit

• Test response time for elevator arrival at different floors
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Q1. Questions on Framework
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Q2. Programs on Strings and Collections
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Q3. Selenium scenario based programs on window handling
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Q1. What is TestNG, Difference between WebElement and WebElements, fially and final, types of Exceptions in selenium, how to handel frams
Ans. 
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 repr...read more
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