400+ Software Tester Interview Questions and Answers

There are various types of testing such as unit testing, integration testing, system testing, and acceptance testing.

• Unit testing: Testing individual components or units of code.

• Integration testing: Testing the interaction between different components or modules.

• System testing: Testing the entire system as a whole.

• Acceptance testing: Testing the system's compliance with business requirements.

• Regression testing: Testing to ensure that changes or fixes do not introduce new issu...read more

I will prioritize and plan my testing activities based on project deadlines and criticality.

• Assess the criticality and deadlines of each project

• Prioritize testing activities based on the assessment

• Create a testing plan for each project

• Allocate time and resources accordingly

• Communicate with project managers and stakeholders regularly

Input method is a way to provide data to a function or program. It can be defined as a parameter in a function and used to pass values.

• Define input method as a parameter in a function, such as int inputMethod(int value)

• Use the input method within the function to process or manipulate the data, for example return value * 2;

• Call the function with the input method, like int result = inputMethod(5);

Smoke testing is a quick and shallow test to check if the basic functionalities of the software are working. Sanity testing is a more thorough test to check if the major functionalities of the software are working after a change.

• Smoke testing is done to check if the software is stable enough for further testing

• Sanity testing is done to check if the changes made to the software have not affected the major functionalities

• Smoke testing is a subset of regression testing

• Sanity tes...read more

Testing is the process of evaluating a system or its component(s) with the intent to find whether it satisfies the specified requirements or not.

• Testing is done to identify defects or errors in the system

• It involves executing a system or its component(s) with test cases

• Testing can be manual or automated

• Types of testing include functional, performance, security, and usability testing

XPath is a language used for locating elements on a web page using XML path expressions.

• XPath stands for XML Path Language

• It is used to navigate through elements and attributes in an XML document

• In automation testing, XPath can be used to locate elements on a web page for testing purposes

• XPath expressions can be used in tools like Selenium to identify elements based on their attributes

• Example: //input[@id='username'] selects the input element with id 'username'

Cut the cake in half horizontally, then stack the halves and cut in half vertically.

• Cut the cake in half horizontally with the first slice.

• Stack the halves and cut in half vertically with the second slice.

• Finally, cut the stack diagonally with the third slice to get 8 pieces.

• Ensure the slices intersect at the center of the cake for even pieces.

SDLC is the process of developing software, while STLC is the process of testing software.

• SDLC (Software Development Life Cycle) is the process of developing software from conception to delivery.

• STLC (Software Testing Life Cycle) is the process of testing software to ensure its quality and functionality.

• SDLC consists of phases like requirements gathering, design, coding, testing, and deployment.

• STLC consists of phases like test planning, test design, test execution, and test ...read more

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

• NoSuchElementException: Thrown when an element could not be found in the DOM.

• ElementNotVisibleException: Thrown when an element is present in the DOM but not visible.

• TimeoutException: Thrown when a command does not complete in the specified time.

• StaleElementReferenceException: Thrown when an element is no longer ...read more

Different locators used in Selenium include ID, Name, Class Name, Tag Name, Link Text, Partial Link Text, XPath, and CSS Selector.

• ID - unique identifier for an element

• Name - name attribute of an element

• Class Name - class attribute of an element

• Tag Name - HTML tag of an element

• Link Text - exact text of a link element

• Partial Link Text - partial text of a link element

• XPath - XML Path Language to locate elements

• CSS Selector - CSS syntax to locate elements

I would follow a systematic approach to report, prioritize, investigate, fix, and verify the critical bug.

• Immediately document the bug details including steps to reproduce, screenshots, and logs.

• Notify the development team and project stakeholders about the critical bug.

• Work closely with developers to understand the root cause and potential fix.

• Verify the fix and conduct thorough regression testing to ensure the bug is resolved.

• Communicate the resolution to the team and updat...read more

Inner join returns only the matching rows between two tables, while outer join returns all rows from both tables.

• Inner join only includes rows with matching values in both tables

• Outer join includes all rows from both tables, even if there are no matching values

• Types of outer joins include left outer join, right outer join, and full outer join

The time required to implement certain features can vary depending on complexity, resources, and team experience.

• The time needed to implement features can be estimated based on the scope and requirements of the project.

• Factors such as team size, skill level, and availability of resources can impact the implementation timeline.

• Using project management tools like Gantt charts or Agile methodologies can help in estimating and tracking feature implementation timelines.

Types of testing include black box, white box, gray box, apl, and web testing.

• Black box testing focuses on the functionality of the software without looking at its internal code.

• White box testing involves testing the internal structures or workings of a program.

• Gray box testing combines elements of both black box and white box testing.

• APL testing is a type of testing specific to certain industries or applications.

• Web testing focuses on testing web applications for functionali...read more

The best technologies for building a good software testing framework are Selenium, Appium, JUnit, TestNG, and Cucumber.

• Selenium for web application testing

• Appium for mobile application testing

• JUnit and TestNG for unit testing

• Cucumber for behavior-driven testing

• Continuous Integration tools like Jenkins for automated testing

Verification in software testing refers to the process of evaluating whether the software meets the specified requirements.

• Verification ensures that the software is built according to the design specifications.

• It involves checking whether the software meets the functional and non-functional requirements.

• Verification is done through reviews, walkthroughs, and inspections.

• It is a static testing technique that is performed before the software is executed.

• Examples of verification...read more

Union combines and removes duplicates, Union All combines all rows including duplicates.

• Union merges two or more tables and removes duplicate rows.

• Union All merges two or more tables and includes all rows, including duplicates.

• Union is slower than Union All as it requires removing duplicates.

• Example: SELECT column1 FROM table1 UNION SELECT column1 FROM table2;

• Example: SELECT column1 FROM table1 UNION ALL SELECT column1 FROM table2;

Test cases should be written with clear objectives and steps to ensure software functionality and quality.

• Identify the objective of the test case

• Define the steps to execute the test case

• Include expected results and actual results

• Ensure test cases cover all possible scenarios

• Use a consistent format for test case documentation

Answer on how to write xpath based on preceding xpath.

• Use the 'preceding' axis in the xpath expression.

• The 'preceding' axis selects all nodes that come before the current node in the document.

• Combine the 'preceding' axis with other axes or predicates to create a more specific xpath expression.

• Example: //div[@class='container']//preceding::input[@type='text']

Smoke testing and Sanity testing are two types of software testing used to check the basic functionality of the application.

• Smoke testing is a type of testing that checks whether the critical functionalities of the application are working fine or not.

• Sanity testing is a type of testing that checks whether the bugs have been fixed or not after a new build is released.

• Smoke testing is done to ensure that the application is stable enough for further testing.

• Sanity testing is don...read more

I am a software tester with expertise in Java-Selenium, logical thinking, and OOPs concepts.

• Proficient in Java programming language and Selenium automation tool

• Strong logical and analytical skills to identify and resolve issues

• In-depth understanding of Object-Oriented Programming concepts

• Experience in creating and executing test cases, test plans, and test strategies

• Familiarity with Agile methodology and continuous integration/continuous delivery (CI/CD) pipeline

• Excellent com...read more

I have experience with various servers and operating systems.

• I have worked with Windows Server 2016 and 2019.

• I am familiar with Linux distributions such as Ubuntu and CentOS.

• I have experience with virtualization technologies like VMware and Hyper-V.

• I have worked with cloud platforms like AWS and Azure.

• I have knowledge of server administration and troubleshooting.

I chose testing because I enjoy finding and fixing bugs in software.

• I have a natural curiosity for finding flaws and improving systems.

• I have a keen eye for detail and enjoy the challenge of identifying and reproducing bugs.

• I find satisfaction in ensuring the quality and reliability of software before it reaches users.

• I enjoy collaborating with developers and other stakeholders to create robust and error-free software.

• I find testing to be a critical and integral part of the s...read more

To get the selected drop down list value, use the getSelectedValue() method.

• Use the getSelectedValue() method to get the selected value from the drop down list.

• Identify the drop down list element using its ID or name.

• Call the getSelectedValue() method on the identified element.

• Store the returned value in a variable for further use.

Jasmin is a testing framework and Selenium is a tool for automating web browsers. They can be integrated to test web applications.

• Jasmin is a behavior-driven development (BDD) testing framework that uses natural language to describe test scenarios.

• Selenium is a tool for automating web browsers and can be used to simulate user interactions with a web application.

• Jasmin and Selenium can be integrated to test web applications by writing test scenarios in Jasmin and using Seleniu...read more

OOPS concept stands for Object-Oriented Programming System. It includes concepts like inheritance, polymorphism, encapsulation, and abstraction.

• Inheritance: Allows a class to inherit properties and behavior from another class. For example, a 'Car' class can inherit from a 'Vehicle' class.

• Polymorphism: Allows objects to be treated as instances of their parent class. For example, a 'Dog' object can be treated as an 'Animal' object.

• Encapsulation: Bundles data and methods into a ...read more

Billing customers in SAP ISU involves creating billing documents based on meter reads.

• Billing in SAP ISU involves creating billing documents using transaction code EA16

• Different meter reads include actual reads, estimated reads, and manual reads

• Actual reads are readings taken directly from the meter, estimated reads are calculated based on previous consumption patterns, and manual reads are entered by the user

I have tested features like user authentication, data validation, performance, and security in my previous organization.

• User authentication testing using different credentials

• Data validation testing by entering invalid data and checking error messages

• Performance testing by simulating high user traffic

• Security testing by checking for vulnerabilities like SQL injection

A test case is a specific condition or set of conditions under which a tester will determine whether an application, system, or one of its features is working as expected. A use case is a description of a specific interaction between a user and a system.

• Test case: focuses on the steps and conditions to be tested

• Use case: focuses on the interaction between user and system

• Test scenario: a sequence of test cases that represents a specific functionality or feature

• Test case is mor...read more

Test case for Facebook login page

• Verify if the login page is accessible

• Verify if the username and password fields are present

• Verify if the 'Login' button is present and clickable

• Verify if the user is redirected to the home page after successful login

Test scenarios for Gmail login page.

• Verify successful login with valid credentials

• Verify error message for invalid email or password

• Verify error message for empty email or password fields

• Verify forgot password functionality

• Verify login page UI elements

Priority and severity are important concepts in software testing. Black and white box testing are different testing techniques. Equivalent partitioning and boundary value analysis are test design techniques.

• Priority refers to the importance of fixing a bug, while severity refers to the impact of the bug on the system.

• Black box testing focuses on testing the functionality of the software without knowing its internal code, while white box testing involves testing the internal c...read more

I would test the food delivery application by checking its functionality, usability, and security.

• Test the ordering process from start to finish

• Check the accuracy of order details and delivery time

• Test the payment process and ensure it is secure

• Check the app's compatibility with different devices and operating systems

• Test the app's response time and loading speed

• Check the app's user interface and ease of use

• Test the app's error handling and recovery process

• Ensure the app comp...read more

I rate myself 8 out of 10 in Python and 7 out of 10 in Selenium

• Proficient in Python programming language

• Experience in writing test scripts using Selenium WebDriver

• Familiar with Selenium Grid and Jenkins for continuous integration

• Regularly update my knowledge through online resources and forums

Accessibility testing ensures that software is usable by people with disabilities.

• Accessibility testing involves evaluating how easily people with disabilities can use a software application.

• It includes testing for screen readers, keyboard navigation, color contrast, and alternative text for images.

• Examples of disabilities to consider are visual impairments, motor disabilities, and cognitive impairments.

• Accessibility guidelines such as WCAG (Web Content Accessibility Guidelin...read more

Testing is required in SDLC to ensure the quality of the software product and to identify and fix defects early in the development process.

• Testing helps to identify defects and errors in the software product

• Testing ensures that the software meets the requirements and specifications

• Testing helps to improve the quality of the software product

• Testing helps to reduce the cost of fixing defects by identifying them early in the development process

• Testing helps to increase customer ...read more

Different test levels are stages of testing that are performed to ensure software quality.

• Unit testing - testing individual units or components of the software

• Integration testing - testing how different units or components work together

• System testing - testing the entire system as a whole

• Acceptance testing - testing to ensure the software meets the requirements and is ready for release

• Regression testing - testing to ensure that changes or updates to the software do not break ...read more

Regression testing is testing the entire application after a change, while retesting is testing a specific bug fix.

• Regression testing involves testing the entire application to ensure that new code changes have not affected existing functionality.

• Retesting is testing a specific bug fix to ensure that the issue has been resolved.

• Regression testing is usually done after every code change, while retesting is done after a bug fix.

• Regression testing helps ensure that new features ...read more

Functional testing checks if the software functions as expected, while non-functional testing checks other aspects like performance and security.

• Functional testing focuses on the specific functionality of the software.

• Non-functional testing focuses on aspects like performance, usability, security, and scalability.

• Examples of functional testing include unit testing, integration testing, and system testing.

• Examples of non-functional testing include load testing, stress testing,...read more

Retesting is testing the same functionality again after a defect is fixed, while regression testing is testing the entire application to ensure new changes do not impact existing functionality.

• Retesting focuses on verifying that a specific defect has been fixed.

• Regression testing focuses on ensuring that new changes do not introduce new defects or impact existing functionality.

• Retesting is usually performed by the tester who found the defect.

• Regression testing is typically pe...read more

Yes, I have experience in Selenium and SQL.

• I have experience using Selenium for automated testing of web applications.

• I am proficient in writing SQL queries to retrieve and manipulate data from databases.

• I have used Selenium WebDriver with Java to automate test cases for a web application.

• I have experience in writing complex SQL queries to perform data validation and verification.

Boundary value analysis is a testing technique that focuses on testing the boundaries of input values.

• It involves testing values at the upper and lower limits of valid input ranges

• It also tests values just outside of those ranges

• For example, if a system accepts values between 1 and 100, boundary value analysis would test values like 0, 1, 2, 99, 100, and 101

To switch one window to another, use the window handles and switch to the desired window.

• Get the current window handle using driver.getWindowHandle()

• Get all window handles using driver.getWindowHandles()

• Switch to the desired window using driver.switchTo().window(handle)

• Example: String currentHandle = driver.getWindowHandle(); Set handles = driver.getWindowHandles(); for (String handle : handles) { if (!handle.equals(currentHandle)) { driver.switchTo().window(handle); }}

STLC is Software Testing Life Cycle which includes phases like requirement analysis, test planning, test design, test execution, and test closure.

• Functional testing is a type of testing where the system is tested against the functional requirements.

• Test case design involves creating test cases based on requirements and specifications.

• Bug life cycle includes stages like New, Assigned, Open, Fixed, Retest, Verified, and Closed.

• Principles of testing include testing shows presenc...read more

adb stands for Android Debug Bridge. It is a command-line tool used to communicate with Android devices.

• adb is used to install and debug apps on Android devices

• Some common adb commands include adb devices, adb install, and adb logcat

• adb can also be used to take screenshots, record screen videos, and access the device shell

• adb requires USB debugging to be enabled on the device

Regression testing is testing the unchanged parts of the software after changes are made, while integration testing is testing the interaction between different components/modules.

• Regression testing focuses on ensuring that previously developed and tested software still performs correctly after changes are made.

• Integration testing focuses on testing the interaction between different components/modules to ensure they work together as expected.

• Regression testing is typically do...read more

I would communicate with the client promptly, investigate the issue thoroughly, provide a detailed analysis, and work on a resolution plan.

• Communicate with the client immediately to acknowledge the issue

• Investigate the root cause of the failure in production

• Provide a detailed analysis of what went wrong and why

• Work with the development team to come up with a resolution plan

• Implement the resolution plan and ensure proper testing before deployment