100+ Automation Tester Interview Questions and Answers

CI/CD stands for Continuous Integration/Continuous Deployment. It is a software development practice that enables frequent and automated code integration, testing, and deployment.

• CI/CD is a set of practices and tools that aim to automate the software development process.

• Continuous Integration involves regularly merging code changes into a shared repository and running automated tests to detect integration issues.

• Continuous Deployment focuses on automating the release and depl...read more

Desired Capabilities are a set of key-value pairs used to configure the WebDriver browser during test automation.

• Used to set properties for WebDriver browser

• Can be used to configure browser settings like browser name, version, platform, etc.

• Helps in customizing the behavior of the browser during automation tests

Mouse actions can be performed using Selenium WebDriver by using Actions class

• Create an instance of Actions class

• Use methods like moveToElement, click, doubleClick, contextClick, dragAndDrop, etc.

• Perform the desired action by calling the respective method on the Actions object

Find the second largest element in an array of strings.

• Convert the strings to integers for comparison.

• Sort the array in descending order.

• Return the second element in the sorted array.

To run playwright test, use the 'npx playwright test' command in the terminal.

• Open the terminal

• Navigate to the directory where your test files are located

• Run the command 'npx playwright test' to execute the tests

Hard assert is a type of assertion that stops the test execution immediately when it fails.

• Hard assert is used to validate critical functionality of the application.

• It is also known as 'assert' or 'assertion'.

• It is used to check if the expected result matches the actual result.

• If the assertion fails, the test execution stops immediately and the test case is marked as failed.

• Hard assert is useful in identifying the root cause of the failure quickly.

Priority and severity are used to classify the impact and importance of a defect in software testing.

• Priority determines the order in which defects should be fixed, based on business needs.

• Severity indicates the impact of a defect on the system or users.

• Priority is usually set by the product owner or business stakeholders.

• Severity is typically determined by the testing team based on the impact on functionality.

• Examples: A critical defect in payment processing would have high ...read more

Cucumber framework is a BDD tool that allows automation testing using plain English syntax.

• Cucumber framework uses Gherkin syntax to write test scenarios in plain English

• It allows collaboration between technical and non-technical team members

• Cucumber integrates with various programming languages like Java, Ruby, etc.

• It supports parallel execution of test scenarios

• Cucumber generates detailed reports for test results

To find unique characters from a string, we can iterate through the string and store each character in a set to check for uniqueness.

• Iterate through the string and store each character in a set

• Check if the character already exists in the set, if not add it

• Return the set of unique characters

Selenium is a popular open-source automation testing tool used for web application testing.

• Selenium supports multiple programming languages like Java, Python, C#, etc.

• It allows testers to write test scripts in a variety of programming languages.

• Selenium can automate web browsers and simulate user interactions.

• It can be integrated with testing frameworks like TestNG and JUnit.

• Selenium Grid allows for parallel test execution on different browsers and operating systems.

To handle alerts in Selenium, use the Alert interface methods like accept(), dismiss(), getText(), and sendKeys().

• Use driver.switchTo().alert() to switch to the alert

• Use accept() method to click on OK button in the alert

• Use dismiss() method to click on Cancel button in the alert

• Use getText() method to get the text present in the alert

• Use sendKeys() method to enter text in the alert input box

Our project framework is based on the Page Object Model design pattern, using Selenium WebDriver and TestNG for automation testing.

• Page Object Model design pattern is used to create separate classes for each web page, making the code more organized and maintainable.

• Selenium WebDriver is used for interacting with web elements and performing actions on the web pages.

• TestNG is used for test case management, grouping, and reporting.

• We also use Maven for project management and dep...read more

Merge Sort is a divide and conquer algorithm that divides the input array into two halves, sorts them, and then merges them back together.

• Divide the array into two halves recursively

• Sort each half using Merge Sort recursively

• Merge the sorted halves back together

RemoteWebDriver is a class in Selenium WebDriver that allows you to execute test cases on a remote machine.

• RemoteWebDriver is a subclass of WebDriver interface in Selenium.

• It allows you to control the browser on a remote machine through the use of a server.

• You can use RemoteWebDriver to run tests on different browsers and operating systems.

• Example: RemoteWebDriver driver = new RemoteWebDriver(new URL("http://localhost:4444/wd/hub"), DesiredCapabilities.chrome());

Excel is a powerful spreadsheet application used for data organization, analysis, and visualization through various features.

• Data Organization: Excel allows users to create tables to organize data efficiently, such as sales records or inventory lists.

• Formulas and Functions: Users can perform calculations using built-in functions like SUM(), AVERAGE(), and VLOOKUP() to analyze data.

• Charts and Graphs: Excel provides tools to create visual representations of data, such as bar ch...read more

Hooks in BDD are special methods that allow for setup and teardown actions before and after scenarios in test automation.

• Hooks are used to perform actions before and after scenarios in BDD tests.

• They can be used for setup (Before) and teardown (After) actions.

• Hooks help in reducing code duplication and improving test maintenance.

• Examples include setting up test data before a scenario and cleaning up resources after a scenario.

API testing is a type of software testing that involves testing APIs directly to ensure they meet functionality, reliability, performance, and security requirements.

• API testing involves testing the functionality, reliability, performance, and security of APIs.

• It focuses on verifying the communication and data exchange between different software systems.

• API testing can be done at different levels such as unit testing, integration testing, and end-to-end testing.

• Tools like Post...read more

TestNG is a testing framework used for automated testing in Java.

• TestNG allows for easy configuration of test cases using annotations.

• It supports parallel execution of test cases.

• TestNG provides reporting and logging features for test results.

• It allows for grouping of test cases for better organization.

• TestNG supports data-driven testing using data providers.

Yes, I have used Java streams for processing collections in a functional style, enhancing code readability and efficiency.

• Streams allow for functional-style operations on collections, such as filtering and mapping.

• Example: List<String> names = Arrays.asList("Alice", "Bob", "Charlie"); List<String> filteredNames = names.stream().filter(name -> name.startsWith("A")).collect(Collectors.toList());

• Streams support parallel processing, which can improve performance on large datasets...read more

Implemented loggers using Log4j for detailed tracking of test execution and error handling in automation testing.

• Configured Log4j in the project by adding the necessary dependencies in the build file.

• Created a logger instance in each test class using: 'private static final Logger logger = Logger.getLogger(ClassName.class);'.

• Used different logging levels (INFO, DEBUG, ERROR) to categorize log messages based on severity.

• Logged important events, such as test start and end, using...read more

I am an experienced Automation Tester with a strong background in software testing and a passion for quality assurance.

• Over 5 years of experience in automation testing using tools like Selenium and TestNG.

• Proficient in programming languages such as Java and Python for writing test scripts.

• Experience in developing and maintaining test automation frameworks.

• Worked on projects in Agile environments, collaborating closely with developers and product owners.

• Implemented CI/CD pipel...read more

A palindrome is a string that reads the same forwards and backwards, like 'radar' or 'level'.

• A simple way to check for a palindrome is to reverse the string and compare it to the original.

• Example: 'madam' reversed is 'madam', so it is a palindrome.

• Another example: 'hello' reversed is 'olleh', so it is not a palindrome.

• Palindromes can also be phrases, ignoring spaces and punctuation, e.g., 'A man, a plan, a canal, Panama!'

Abstraction is hiding the implementation details while Interface is a contract that defines the methods that a class must implement.

• Abstraction focuses on what an object does, while Interface focuses on what an object is.

• Abstraction can be achieved through abstract classes in Java, while Interface is implemented using the 'implements' keyword.

• Abstraction allows for code reusability and flexibility, while Interface enforces a specific set of methods that must be implemented.

• An...read more

Use a hash map to find repeated words in a sentence.

• Split the sentence into words using space as delimiter

• Create a hash map to store word frequencies

• Iterate through the words and update the frequencies in the hash map

• Identify words with frequency greater than 1 as repeated words

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

• StaleElementReferenceException: Thrown when the element is no longer attached to the DOM.

• TimeoutException: Thrown when a command does not complete i...read more

Defect life cycle is the process of identifying, reporting, fixing, retesting, and closing defects in software development.

• Defect identification: Defects are identified through testing or user feedback.

• Defect reporting: Defects are reported in a defect tracking tool with details like steps to reproduce, severity, and priority.

• Defect fixing: Developers fix the reported defects based on the information provided.

• Defect retesting: Testers verify that the fixed defects are indeed ...read more

This question tests your ability to manipulate strings in Java, focusing on common operations and algorithms.

• Use String methods like length(), charAt(), and substring() for basic operations. Example: String str = 'Hello'; str.charAt(0) returns 'H'.

• Utilize StringBuilder for mutable strings, which is more efficient for concatenation. Example: StringBuilder sb = new StringBuilder(); sb.append('Hello');

• Explore common algorithms like palindrome checking. Example: 'madam' is a pali...read more