700+ Test Engineer Interview Questions and Answers

Test Engineer interview questions on frameworks, testing types, bug tracking, and regression testing.

• Worked with Selenium framework with folder structure of test cases, test data, and page objects

• Functional testing includes smoke, sanity, and regression testing while non-functional testing includes performance and security testing

• Real-time scenario: prioritize and fix critical bugs first, communicate with stakeholders, and perform thorough testing before release

• Integration te...read more

Old generation video game consoles faced various problems.

• Limited processing power and memory

• Low-quality graphics and sound

• Limited game storage capacity

• Lack of online connectivity

• Compatibility issues with newer TVs

• Limited multiplayer options

Interview questions for Test Engineer position covering topics like testing types, bug life cycle, constructors, locators, and priority/severity.

• White box testing is testing the internal structure of the application, black box testing is testing the functionality without knowledge of internal structure, and grey box testing is a combination of both.

• Bug life cycle includes stages like new, open, assigned, fixed, verified, and closed.

• Deferred means postponing the bug fix to a l...read more

The different types of automation testing include unit testing, functional testing, integration testing, regression testing, and performance testing.

• Unit testing focuses on testing individual components or units of code.

• Functional testing verifies that the software meets the specified functional requirements.

• Integration testing checks the interaction between different components or modules of the software.

• Regression testing ensures that changes or updates to the software do n...read more

Initiating a test with less knowledge in requirement

• Start by analyzing the available information and identifying the critical areas to be tested

• Collaborate with the development team to gain a better understanding of the system

• Use exploratory testing techniques to uncover potential issues

• Create test cases based on the information gathered and execute them

• Continuously learn and update your knowledge as you test

Game testing differs from software testing in terms of scope, complexity, and user experience.

• Game testing involves testing the functionality, performance, and usability of video games.

• Software testing focuses on testing the functionality and performance of software applications.

• Game testing requires specialized knowledge of game mechanics, graphics, audio, and user interactions.

• Software testing typically involves testing business logic, data processing, and user interfaces.

• G...read more

A Test Engineer should know the difference between quality control and quality assurance, the importance of software testing, its categories, and types of manual testing.

• Quality control is the process of identifying defects in the final product, while quality assurance is the process of preventing defects from occurring in the first place.

• Software testing is the process of evaluating a software product to detect differences between existing and required conditions and to eval...read more

Different types of waits in Selenium include implicit wait, explicit wait, and fluent wait.

• Implicit wait: Waits for a certain amount of time before throwing an exception if an element is not immediately available.

• Explicit wait: Waits for a specific condition to be met before proceeding with the next steps.

• Fluent wait: Waits for a certain condition to be satisfied with a defined polling frequency.

• Examples: Thread.sleep(5000) for a static wait, WebDriverWait for explicit wait, ...read more

The latest video game console is the PlayStation 5.

• The PlayStation 5 (PS5) is the latest console released by Sony.

• It features advanced graphics, fast loading times, and a new DualSense controller.

• Some popular games for the PS5 include Demon's Souls, Spider-Man: Miles Morales, and Ratchet & Clank: Rift Apart.

The question covers TestNG annotations, Java collections, Xpath, Maven, Jenkins, and browser automation.

• TestNG annotations include @Test, @BeforeTest, @AfterTest, etc.

• Java collections include ArrayList, HashMap, HashSet, etc.

• Xpath is used to locate elements in XML or HTML documents.

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

• Jenkins is a CI/CD tool used for continuous integration and delivery.

• Different browsers for automation include Chrome, Firefox, Safari, etc.

Regression is retesting of previously tested functionality to ensure that changes made to the software have not affected it.

• Regression testing is done to ensure that new changes or fixes have not introduced new bugs or issues.

• It is not necessary to do regression testing on every release, but it should be done on critical functionality or areas that have been changed.

• Regression testing can be done manually or through automation tools like Selenium.

• Examples of regression testin...read more

A string is a sequence of characters. To make 'Zycus' string to 'Zycus Infotech' in Java, concatenate the two strings.

• Use the '+' operator to concatenate the two strings.

• Create a new string variable and assign the concatenated value to it.

• Example: String str1 = 'Zycus'; String str2 = ' Infotech'; String result = str1 + str2;

RPA stands for Robotic Process Automation. It is a technology that uses software robots to automate repetitive tasks.

• RPA can help reduce errors and increase efficiency in tasks such as data entry and report generation.

• If RPA is not an option, other solutions such as process optimization or manual task delegation may be considered.

• As a test engineer, I would work with the development team to identify the root cause of any issues and propose appropriate solutions.

• For example, i...read more

I would analyze the root cause of the production issue, communicate with the team, and work on a solution to fix the problem.

• Analyze the root cause of the production issue

• Communicate with the team to understand the impact and collaborate on a solution

• Work on fixing the problem and retesting the solution before deploying it to production

I will plan testing by analyzing the requirements, identifying test scenarios, creating test cases, and executing them.

• Analyze the requirements and identify test scenarios

• Create test cases based on the identified scenarios

• Execute the test cases and report defects

• Perform regression testing to ensure the fixes do not break existing functionality

• Collaborate with the development team to resolve issues

• Ensure the testing is completed within the given timeline

Defect leakage can be handled by identifying the root cause, fixing the issue, and implementing preventive measures.

• Identify the root cause of the defect leakage

• Fix the issue causing the defect leakage

• Implement preventive measures to avoid future defect leakage

• Conduct thorough testing to ensure the defect has been resolved

• Communicate the resolution and preventive measures to the team and stakeholders

Yes, I am familiar with agile methodology and use Jira. My strength lies in test automation.

• I have experience working in agile teams and following agile principles

• I am comfortable using Jira for project management and issue tracking

• My strength is in test automation, where I have expertise in tools like Selenium and Appium

• I am also skilled in manual testing and have experience in creating test plans and test cases

Software Testing Life Cycle involves phases like planning, designing, executing, and reporting. Different methods and levels of testing are used.

• Phases in Software Testing Life Cycle: Planning, Test Design, Test Execution, Test Reporting

• Different methods of testing: Unit Testing, Integration Testing, System Testing, Acceptance Testing

• Different levels of testing: Unit Testing, Integration Testing, System Testing, Acceptance Testing

• Bug Life Cycle or Defect Life Cycle: New, Assi...read more

Questions related to defect lifecycle, moratorium, NTC Customer, NPA, regression testing, functional testing, and corporate loan.

• Defect lifecycle refers to the stages a defect goes through from discovery to resolution.

• Moratorium is a temporary suspension of an activity.

• NTC Customer refers to a customer who has been declared as 'Not Traceable, Customer' by the bank.

• NPA stands for Non-Performing Asset, a loan that has not been serviced for a certain period of time.

• Regression te...read more

To convince developers to reject valid defects, it is important to provide clear and detailed evidence of the defect's validity.

• Gather all necessary information about the defect, including steps to reproduce, expected behavior, and actual behavior.

• Provide screenshots or video recordings that clearly demonstrate the defect.

• Include relevant log files or error messages that support the existence of the defect.

• Communicate the impact of the defect on the overall system or user exp...read more

Selenium can be used for testing responsiveness of mobile apps.

• Selenium can simulate user interactions on mobile apps to test responsiveness.

• It can be used to test how the app responds to different screen sizes and orientations.

• Selenium can also be used to test how the app responds to different network conditions.

• Examples of responsiveness testing using Selenium include checking if buttons and links are clickable, if images and videos load properly, and if the app adjusts to ...read more

Test cases for a Music Player

• Test playback of different file formats

• Test volume control functionality

• Test shuffle and repeat options

• Test playlist creation and management

• Test search functionality

• Test interruption handling (e.g. phone call)

• Test compatibility with different headphones/speakers

• Test battery consumption

• Test user interface and user experience

Interview questions for Test Engineer position

• Defect life cycle includes identification, reporting, prioritization, fixing, retesting, and closure

• Regression testing is done to ensure that new changes do not affect existing functionality, while retesting is done to verify if a defect has been fixed

• Examples of testing techniques include black box, white box, and grey box testing

• Specific characteristics of a tester include attention to detail, analytical skills, communication sk...read more

Explaining the difference between Before Test and Before Method and how link happens between feature and step definition in Cucumber.

• Before Test runs once before all the tests in a test suite while Before Method runs before each test method

• Before Test is used for setting up the environment for the entire test suite while Before Method is used for setting up the environment for each test method

• In Cucumber, the link between feature and step definition is established through the...read more

To perform Data Driven Testing, Excel can be used to store test data and read it using automation tools.

• Create an Excel sheet with test data

• Use automation tools like Selenium to read data from Excel

• Iterate through rows and columns to fetch data

• Use fetched data to perform tests

• Update Excel sheet with test results

JVM is Java Virtual Machine, Java is a high-level programming language, OOPs concepts include inheritance, polymorphism, encapsulation, and abstraction. Overloading is having multiple methods with the same name but different parameters, overriding is implementing a method in a subclass that is already defined in the superclass.

• JVM stands for Java Virtual Machine, it is an abstract machine that provides a runtime environment for Java bytecode to be executed.

• Java was developed ...read more

Answers to common questions asked in a Test Engineer interview.

• Different methods of testing include black box, white box, gray box, regression, smoke, and exploratory testing.

• Verification ensures that the software meets the requirements and specifications, while validation ensures that the software meets the customer's needs and expectations.

• Functional testing is a type of testing that verifies that the software meets the functional requirements and specifications.

• A testcase ...read more

Telecom technologies refer to the various technologies used in the telecommunications industry to transmit and receive information.

• Telephony: The technology of transmitting voice signals over long distances.

• Wireless Communication: The transmission of information without the use of physical connections.

• Internet Protocol (IP): The protocol used for transmitting data packets over the internet.

• Fiber Optics: The use of thin strands of glass or plastic to transmit data as pulses of...read more

Analog communication uses continuous signals while digital communication uses discrete signals.

• Analog communication uses continuous signals to transmit information while digital communication uses discrete signals.

• Analog communication is based on the variation of continuous physical quantities like voltage, current, or frequency, while digital communication is based on binary code.

• Analog communication is more susceptible to noise and interference, while digital communication ...read more

I have experience in automation using tools like Selenium and Appium. AI involves machine learning and decision-making, while automation is rule-based.

• Proficient in Selenium and Appium for automation

• AI involves machine learning and decision-making

• Automation is rule-based and follows a set of predefined instructions

• AI can adapt and learn from data, while automation cannot

• AI can make decisions based on data, while automation cannot

Selenium components, web locators, dropdown selection, and browser launch code.

• Selenium components include Selenium IDE, Selenium WebDriver, and Selenium Grid.

• Web locators in Selenium include ID, Name, Class Name, Tag Name, Link Text, and Partial Link Text.

• To select a dropdown, use the Select class and its methods like selectByVisibleText(), selectByValue(), and selectByIndex().

• To launch a browser, use the WebDriver interface and its methods like get() and navigate().

Test Engineer interview questions covering topics like verification, validation, hard assert, Selenium code, Excel file import, framework experience, and calendar selection code.

• Verification is the process of evaluating whether the product meets the specified requirements, while validation is the process of evaluating whether the right product is being built.

• Hard assert is a type of assertion in testing that stops the test execution immediately if the assertion fails.

• Example ...read more

Standard profiles on SFDC and web to lead in SFDC

• Standard profiles in SFDC are pre-built sets of permissions and access levels for users

• Web-to-Lead is a feature in SFDC that allows you to capture lead information from your website and automatically create a lead record in SFDC

• To set up Web-to-Lead, you need to create a web form on your website and then configure the form to send the data to SFDC

• Standard profiles can be assigned to users to control their access to different pa...read more

Communicate the impact of the defect and provide evidence to support it.

• Explain the potential consequences of the defect, such as customer dissatisfaction or loss of revenue.

• Provide evidence to support the defect, such as screenshots or logs.

• Collaborate with the dev team to find a solution that addresses the defect.

• Ensure that the defect is properly documented and tracked for future reference.

A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.

• Transformers are used to increase or decrease the voltage levels in electrical power transmission and distribution systems.

• There are two main types of transformers: step-up transformers and step-down transformers.

• Step-up transformers increase the voltage level, while step-down transformers decrease the voltage level.

• Other types of transformers ...read more

Different transformations in big data testing include data mapping, data conversion, data aggregation, and data filtering.

• Data mapping involves mapping data from one format to another

• Data conversion involves converting data from one type to another

• Data aggregation involves combining data from multiple sources

• Data filtering involves selecting specific data based on certain criteria

• Examples include transforming data from CSV to JSON, converting data from string to integer, aggr...read more

Performance testing focuses on evaluating the speed, responsiveness, and stability of a system, while performance engineering involves optimizing the system for better performance.

• Performance testing is a subset of performance engineering.

• Performance testing measures the system's performance under specific conditions.

• Performance engineering includes analyzing, designing, and implementing improvements to enhance performance.

• Performance testing identifies bottlenecks and issues...read more

The code initializes a new instance of the ChromeDriver class in Selenium WebDriver.

• WebDriver is an interface in Selenium that provides methods for browser automation

• ChromeDriver is a class that implements the WebDriver interface for Chrome browser

• The 'new' keyword creates a new instance of the ChromeDriver class

• The assignment 'driver = new ChromeDriver()' initializes the driver variable with the new instance

Selenium has different components like Selenium WebDriver, Selenium IDE, Selenium Grid, and Selenium RC.

• Selenium WebDriver is a tool for automating web applications.

• Selenium IDE is a record and playback tool for creating test cases.

• Selenium Grid allows running tests on multiple machines in parallel.

• Selenium RC (Remote Control) is a deprecated component that allows executing tests on different browsers and operating systems.

QTP is a test automation tool. findelement() is used to find a single element, findelements() is used to find multiple elements.

• QTP is short for QuickTest Professional, a test automation tool used for functional and regression testing.

• findelement() is a method in QTP used to find a single element on a web page based on the specified locator.

• findelements() is a method in QTP used to find multiple elements on a web page based on the specified locator.

• The findelement() method re...read more

My framework is based on modular design and utilizes OOP concepts for better code organization and reusability. It provides benefits such as faster test execution and easier maintenance.

• My framework is modular, with each module representing a specific functionality or feature

• I have used OOP concepts such as inheritance, encapsulation, and polymorphism to create reusable code

• For example, I have created a base class for test cases that includes common methods and properties, wh...read more

Method overloading is having multiple methods with the same name but different parameters. Method overriding is having a subclass method with the same name and parameters as a superclass method.

• Method overloading is used to provide different ways to call the same method with different parameters.

• Method overriding is used to provide a specific implementation of a method in a subclass that is already defined in the superclass.

• Method overloading is resolved at compile-time while...read more

Modulation is the process of varying a carrier signal's properties to transmit information.

• Modulation is used to transfer information through a carrier signal.

• It involves varying one or more properties of the carrier signal.

• Types of modulation include amplitude modulation (AM), frequency modulation (FM), and phase modulation (PM).

• AM modulates the carrier signal's amplitude to encode information.

• FM modulates the carrier signal's frequency to encode information.

• PM modulates the...read more

The testing process in our organization involves planning, designing test cases, executing tests, analyzing results, and reporting findings.

• Planning phase involves defining test objectives and scope

• Designing test cases based on requirements and specifications

• Executing tests using various tools and techniques

• Analyzing test results to identify defects and issues

• Reporting findings to stakeholders for further action

• Continuous improvement through feedback and lessons learned