Wipro Test Lead Interview Questions and Answers

Core Java OOP concepts enhance code reusability, maintainability, and scalability in our project.

• Encapsulation: Protects data by restricting access. Example: Using private variables with public getters/setters.

• Inheritance: Allows new classes to inherit properties of existing classes. Example: A 'Dog' class inheriting from an 'Animal' class.

• Polymorphism: Enables methods to do different things based on the object. Exampl...read more

throws is a keyword used in method signature to indicate that the method can throw an exception, while throw is used to explicitly throw an exception.

• throws is used in method signature to declare the exceptions that can be thrown by the method

• throw is used to explicitly throw an exception

• throws is a keyword, while throw is a statement

• Example: public void method() throws IOException { //code }

• Example: throw new IOExcept...read more

Program to reverse a number

• Convert the number to a string

• Reverse the string

• Convert the reversed string back to a number

Window handles refer to the unique identifiers assigned to each window opened by a browser.

• Window handles are used to switch between different windows in a browser.

• Each window opened by a browser is assigned a unique window handle.

• Window handles are used in automated testing to interact with different windows.

• The plural 'window handles' refers to multiple handles, while 'window handle' refers to a single handle.

Scroll down to the element and use JavaScript to click on it.

• Scroll down to the bottom of the page using the browser's scroll bar or JavaScript

• Locate the element using its ID, class name, or XPath

• Use JavaScript to click on the element using the click() method

Common exceptions in Selenium include ElementNotVisibleException, NoSuchElementException, TimeoutException, StaleElementReferenceException, and WebDriverException.

• ElementNotVisibleException occurs when an element is present in the DOM but not visible on the page

• NoSuchElementException occurs when an element cannot be found on the page

• TimeoutException occurs when a command takes too long to complete

• StaleElementReferenceE...read more

Java Exceptions are errors that occur during program execution and can be handled using try-catch blocks.

• Exceptions are objects that are thrown when an error occurs

• They can be caught and handled using try-catch blocks

• There are three types of exceptions: checked, unchecked, and errors

• Checked exceptions must be handled or declared in the method signature

• Unchecked exceptions and errors do not need to be handled or declare...read more

Cucumber is a BDD tool that allows writing test cases in plain English and automating them.

• Cucumber uses Gherkin syntax to write test cases in plain English

• It maps the plain English statements to code using step definitions

• Cucumber supports multiple programming languages like Java, Ruby, etc.

• It integrates with various testing frameworks like JUnit, TestNG, etc.

• Cucumber generates reports in various formats like HTML, JS...read more

Testcases can be run in parallel by using tools like Selenium Grid, TestNG, JUnit, or by writing custom code.

• Use Selenium Grid to distribute tests across multiple machines

• Use TestNG or JUnit to run tests in parallel within a single machine

• Write custom code to execute tests in parallel using threads or processes

• Ensure that the tests are independent and do not interfere with each other

Testcases with multiple data can be run using data-driven testing approach.

• Create a test script that can accept multiple sets of data

• Store the data in an external file or database

• Iterate through the data and execute the test script for each set of data

• Use a testing framework that supports data-driven testing, such as JUnit or TestNG

Apache POI is a Java library for working with Microsoft Office documents.

• Use POI to read, write, and manipulate Excel, Word, and PowerPoint files

• Create a workbook object to work with Excel files

• Use the HSSF (Horrible Spreadsheet Format) package for working with Excel files in .xls format

• Use the XSSF (XML Spreadsheet Format) package for working with Excel files in .xlsx format

• Use the HWPF (Horrible Word Processor Format...read more

Yes, if the automation is planned and executed within the sprint timeline.

• Automation should be planned and estimated during sprint planning

• Automation scripts should be developed and executed within the sprint timeline

• Automation results should be reviewed and reported in sprint review

• Automation should not impact the sprint goal or other planned tasks

Validate data creation after a POST request in REST API using various methods like status codes and data retrieval.

• Check the HTTP response status code; a 201 Created indicates success.

• Retrieve the resource using a GET request to verify the data.

• Validate the response body to ensure it contains the expected data.

• Use database queries to confirm the data is stored correctly.

• Check for unique identifiers (e.g., IDs) to ensur...read more

There are several status codes available in API testing to indicate the outcome of a request.

• 200 - OK: The request was successful

• 201 - Created: The request was successful and a new resource was created

• 400 - Bad Request: The request was invalid or could not be understood

• 401 - Unauthorized: Authentication is required and has failed or has not been provided

• 403 - Forbidden: The server understood the request but refuses to ...read more

Status code series are 1xx, 2xx, 3xx, 4xx, and 5xx. They indicate the status of HTTP requests and responses.

• 1xx - Informational responses

• 2xx - Successful responses

• 3xx - Redirection messages

• 4xx - Client error responses

• 5xx - Server error responses