500+ Automation Test Engineer Interview Questions and Answers

The question is about handling scrollbar and mouse activities in automation testing.

• To handle scrollbar, you can use methods like scrollIntoView(), scrollTo(), or Actions class in Selenium.

• To handle mouse activities, you can use Actions class in Selenium to perform actions like click, double click, drag and drop, etc.

• Jenkins is a popular continuous integration and delivery tool, while GitHub is a web-based version control system.

• Story Point is a unit of measure used in Agile ...read more

I am an Automation Test Engineer with knowledge of STLC, test plan, test case, test scenario, Selenium framework, and writing Selenium test cases.

• STLC stands for Software Testing Life Cycle and is a process followed to ensure quality in software testing.

• Test plan is a document that outlines the testing strategy, objectives, and scope of testing.

• Test case is a set of steps and conditions that are executed to verify the functionality of a software application.

• Test scenario is a...read more

Automation, Selenium, XPath, Regression Testing, and Web Elements

• Automation is the process of using software tools to execute test cases

• Selenium is an open-source automation testing tool used for web applications

• XPath is a language used to navigate through XML documents and locate web elements

• Regression testing is the process of testing changes to ensure they do not affect existing functionality

• id(), name(), linktext(), partial link text(), tag(), and attribute() are methods ...read more

Questions related to cucumber, defects found, functional and automation testing tools.

• Cucumber is a BDD tool used for testing

• Found defects related to UI, functionality, and performance

• Functional testing involves testing the application's features and functionality

• Worked on automation tools like Selenium, Appium, and TestNG

• Used automation tools to create test scripts and execute them

• Integrated automation scripts with CI/CD pipeline for continuous testing

Removing repeated words from a string without using predefined methods.

• Split the string into an array of words

• Create an empty array to store unique words

• Loop through the array of words and check if the word is already in the unique words array

• If the word is not in the unique words array, add it

• Join the unique words array back into a string

Interview questions for Automation Test Engineer

• Types of wait - implicit, explicit, fluent

• Locators in Selenium - ID, Name, Class Name, Tag Name, Link Text, Partial Link Text, CSS Selector, XPath

• Grid vs WebDriver - Grid allows parallel execution on multiple machines, WebDriver executes tests on a single machine

• CSS Selector vs XPath - CSS Selector is faster, XPath is more powerful

• Types of list - ArrayList, LinkedList, Vector

• Use of Action Class - performing advanced user interac...read more

Git is a version control system. Push code to upload changes to a remote repository. Pull code to download changes from a remote repository.

• To push code, use the command 'git push '. For example, 'git push origin master'.

• To pull code, use the command 'git pull '. For example, 'git pull origin master'.

• Make sure to commit changes before pushing code using the command 'git commit -m '.

• Use 'git status' to check the status of your local repository.

• Use 'git clone ' to clone a rem...read more

Assertion is a validation point to check if the expected result matches the actual result. Soft assertion doesn't stop the test execution on failure, while hard assertion does.

• Assertion is a way to validate if the expected result matches the actual result

• Soft assertion doesn't stop the test execution on failure, but logs the failure and continues with the test

• Hard assertion stops the test execution on failure and marks the test as failed

• Example of soft assertion: verifying mu...read more

Interview questions for Automation Test Engineer

• To run failed test case, use failed.xml

• Click can be used via Actions class or JavascriptExecutor

• Array programs: reverse, second highest number

• Constructor in abstract class

• Test plan and scenario definition

• Roles and responsibilities in current organization

• Disable test cases using keyword or include/exclude in suite

• Polymorphism concept

• Unix commands used in day to day activity

• TestNG annotations and keywords

• Code for scroll up and dow...read more

To navigate to other tab in Selenium, switch to the desired window handle. To work on different frame, switch to the frame using its name or index.

• To navigate to other tab, use driver.switchTo().window() method

• To work on different frame, use driver.switchTo().frame() method

• To switch back to default content, use driver.switchTo().defaultContent() method

• To switch to frame using name or id, use driver.switchTo().frame("frameName") or driver.switchTo().frame("frameId")

• To switch t...read more

TestNG is a testing framework for Java that supports various testing types and provides advanced features like parallel testing and reporting.

• TestNG stands for Test Next Generation.

• It supports various testing types like unit, functional, integration, and end-to-end testing.

• TestNG provides annotations like @Test, @BeforeSuite, @AfterSuite, etc. to define test methods and their execution order.

• It supports parallel testing, which helps in reducing the overall test execution time...read more

Answers to common interview questions for Automation Test Engineer position.

• Const is used for constant values that cannot be reassigned, var is used for variable declaration, and char is a data type for storing characters in programming languages.

• OOPs concepts include inheritance, encapsulation, polymorphism, and abstraction. Example: Inheritance allows a class to inherit properties and methods from another class.

• JavaScript is an asynchronous language, meaning it can execute ...read more

Test with priority 1 executes first, followed by 0 and then -1.

• Tests with higher priority are executed first

• Priority can be used to determine the order of execution

• Priority can be set in test management tools like JIRA or TestRail

Select class in Selenium is used to handle dropdowns and multi-select options on a web page.

• Syntax: Select select = new Select(driver.findElement(By.id("dropdownId")));

• Methods: selectByVisibleText(), selectByValue(), selectByIndex(), getOptions(), isMultiple(), getAllSelectedOptions(), deselectAll(), deselectByVisibleText(), deselectByValue(), deselectByIndex()

• Select class is used to handle dropdowns and multi-select options on a web page.

• It provides various methods to select...read more

Control statements are used to control the flow of execution of a program. They include branching and looping statements.

• Branching statements are used to execute a particular set of statements and include simple if, if else, nested if else, else if ladder, and switch.

• Looping statements are used to execute a set of instructions repeatedly and include for loop, while loop, and do while.

• Control statements are essential for creating efficient and effective programs.

• Examples of co...read more

Parallel testing is running multiple tests simultaneously to save time and increase efficiency.

• Parallel testing is useful for large test suites that take a long time to run.

• It requires a test framework that supports parallel execution.

• Code example: pytest -n 4 (runs 4 tests in parallel)

• Parallel testing can be done on multiple machines or on a single machine with multiple cores.

• It can help identify and isolate issues faster.

• Parallel testing can also help with load testing and ...read more

I have used concepts like OOPs, Exception Handling, Collections, and Multithreading in my Selenium script.

• Used OOPs concepts like inheritance and polymorphism to create reusable code

• Implemented Exception Handling to handle unexpected errors and exceptions

• Used Collections like ArrayList and HashMap to store and retrieve data

• Implemented Multithreading to run tests in parallel for faster execution

• Used WebDriver interface to interact with web elements and perform actions

To take multiple values from dropdown, use a loop to iterate through each option and select them.

• Identify the dropdown element using its locator

• Use the Select class to create an object for the dropdown

• Use the getOptions() method to get all the options in the dropdown

• Iterate through the options using a loop and select each option using the selectByVisibleText() or selectByValue() method

There are four types of joins in SQL: Inner Join, Left Join, Right Join, and Full Outer Join.

• Inner Join: returns only the matching rows from both tables

• Left Join: returns all the rows from the left table and matching rows from the right table

• Right Join: returns all the rows from the right table and matching rows from the left table

• Full Outer Join: returns all the rows from both tables, with NULL values in the columns where there is no match

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

• Implicit wait: waits for a certain amount of time before throwing an exception if the element is not found

• Explicit wait: waits for a certain condition to be met before proceeding with the next step

• Fluent wait: waits for a certain condition to be met within a specified time frame, polling at regular intervals

• Examples: WebDriverWait, ExpectedConditions

ElementNotPresent exception occurs even if element is present on page. Why?

• The element may not be loaded yet, so wait for it to load before checking

• The element may be hidden or not visible on the page

• The element may have a different name or ID than expected

• The element may be in an iframe or shadow DOM

• The element may have been removed or deleted from the page

Polymorphism is the ability of an object to take on many forms. It allows objects of different classes to be treated as if they were the same type.

• Polymorphism is achieved through method overriding and method overloading

• Example: A parent class Animal has a method called makeSound(). Child classes like Dog, Cat, and Cow can override this method to make their own unique sound.

• Another example is method overloading where a class can have multiple methods with the same name but di...read more

To insert value in text box using excel sheet through Selenium, we need to read data from excel and use sendKeys() method.

• Read data from excel using Apache POI or JXL library

• Identify the text box element using Selenium

• Use sendKeys() method to insert the value from excel into the text box

Selenium grid is a tool used for parallel execution of test cases on multiple machines. WebDriver is a tool for automating web applications.

• Selenium grid allows for distributed testing across multiple machines and browsers

• WebDriver is a tool for automating web applications and supports multiple programming languages

• Daily activities include writing and executing test cases, debugging issues, and reporting results

• Framework used depends on project requirements and can vary from ...read more

Agile methodology is an iterative approach to software development that emphasizes collaboration, flexibility, and customer satisfaction. CI/CD pipeline is a set of practices that automate the process of building, testing, and deploying software.

• Agile methodology involves breaking down a project into smaller, more manageable pieces called sprints.

• Each sprint involves a cross-functional team working together to deliver a working product increment.

• CI/CD pipeline involves contin...read more

Cucumber is used to write and execute automated acceptance tests in Selenium Java.

• Cucumber allows for writing test scenarios in plain English using Gherkin syntax

• These scenarios are mapped to step definitions in Java code

• Selenium Java is used to interact with the web application being tested

• Cucumber and Selenium Java are integrated using a test runner such as JUnit or TestNG

I have used various javascript commands in Selenium such as executeScript, executeAsyncScript, etc.

• executeScript() method is used to execute JavaScript code in the context of the currently selected frame or window.

• executeAsyncScript() method is used to execute asynchronous JavaScript code in the context of the currently selected frame or window.

• Other commonly used JavaScript commands in Selenium include getElementById(), getElementsByClassName(), etc.

Yes, you can create a static method inside an abstract class or interface.

• Static methods can be defined in interfaces since Java 8.

• Static methods in interfaces are used for providing utility methods that are not tied to any specific instance of the interface.

• Static methods in abstract classes can be used for common functionality that does not require an instance of the class.

Scrolling in mobile can be done using swipe or touch actions.

• Use swipe or touch actions to scroll in mobile automation

• For swipe action, use swipe method with start and end coordinates

• For touch action, use press and move methods with start and end coordinates

• Example: driver.swipe(startX, startY, endX, endY, duration)

• Example: TouchAction(driver).press(startX, startY).moveTo(endX, endY).release().perform()

To point to any other branch in Jenkins, use the 'Branch specifier' field in the 'Source Code Management' section.

• In the Jenkins job configuration, go to the 'Source Code Management' section

• Select the appropriate SCM tool (e.g. Git, SVN)

• In the 'Branch specifier' field, enter the name of the branch you want to point to (e.g. 'develop', 'feature/xyz')

• Save the configuration and run the job

To track tasks in Jira, I will create issues, assign them to team members, set priorities, and update their status.

• Create issues in Jira for each task

• Assign the issues to team members

• Set priorities for each issue

• Update the status of each issue as it progresses

• Use Jira's reporting features to track progress and identify bottlenecks

Automation testing refers to the use of software tools to execute pre-scripted tests on a software application.

• Automation testing involves writing scripts to automate repetitive manual testing tasks

• It helps in reducing the time and effort required for testing

• It improves the accuracy and reliability of testing results

• Examples of automation testing tools include Selenium, Appium, and TestComplete

SQL query to get the 10th highest salary from employee table

• Use ORDER BY and LIMIT clauses

• Subquery can be used to get the 10th highest salary

Popular tools for automation testing include Selenium, Appium, JMeter, and TestComplete.

• Selenium: widely used for web application testing

• Appium: used for mobile application testing

• JMeter: used for load testing and performance testing

• TestComplete: used for desktop application testing

• Other popular tools include Katalon Studio, Robot Framework, and Cucumber

To take a screenshot in Selenium, use the getScreenshotAs() method.

• Create an object of the TakesScreenshot interface

• Use the getScreenshotAs() method to capture the screenshot

• Save the screenshot to a desired location using the File class

Abstraction is a way of hiding implementation details. An interface is a contract that specifies the behavior of a class.

• Abstraction is achieved through abstract classes and interfaces

• Abstract classes can have both abstract and non-abstract methods

• Interfaces can only have abstract methods and constants

• A class can implement multiple interfaces but can only inherit from one abstract class

• Abstract classes can have constructors but interfaces cannot

• Example: An abstract class 'Ani...read more

Yes, a static local variable can be created inside a static method.

• Yes, a static local variable can be declared inside a static method in programming languages like C++.

• Static local variables retain their values between function calls.

• Example: static void myStaticMethod() { static int count = 0; count++; }

I don't have the available data to answer this question.

• N/A

Interview questions for Automation Test Engineer on encapsulation, abstraction, Selenium dropdown and Appium configuration.

• Encapsulation is the process of hiding implementation details from the user.

• Abstraction is the process of hiding unnecessary details from the user.

• Selenium can locate dropdown using Select class and its methods.

• Appium configuration questions may include setting up desired capabilities, specifying app path, device name, platform name, etc.

TestNG is a testing framework for Java. Annotations like @Test, @BeforeMethod, @AfterMethod, etc. are used to define test cases and their order of execution.

• @Test annotation is used to define a test case.

• @BeforeMethod and @AfterMethod annotations are used to define pre and post conditions for each test case.

• Test cases can be grouped using @Test annotation with 'groups' parameter.

• Test cases can be prioritized using @Test annotation with 'priority' parameter.

• Test cases can be e...read more

The question is about automation testing, specifically focusing on taking screenshots, the differences between Selenium 3 and 4, Selenium components, frameworks and examples, and parallel execution.

• Taking screenshots is a common practice in automation testing to capture the state of the application at a specific point in time.

• Selenium 3 and 4 are different versions of the Selenium automation framework, with version 4 introducing new features and improvements.

• Selenium componen...read more

Test cases can be executed in parallel by using tools like Selenium Grid or TestNG.

• Use a tool like Selenium Grid to distribute test cases across multiple machines

• Use TestNG to run tests in parallel by specifying the number of threads

• Ensure that the test cases are independent and do not have any dependencies

• Use a continuous integration tool like Jenkins to manage and execute parallel tests

• Monitor the test execution and analyze the results to identify any issues

• Parallel executi...read more

Multiple credentials can be logged in using data from an excel sheet.

• Read the excel sheet using a library like Apache POI

• Iterate through the rows and columns to get the data

• Use a loop to login with each set of credentials

• Assert the login success or failure for each set of credentials

Java program to find maximum profit from buying and selling books on different days.

• Create an array to store the prices of books on different days

• Iterate through the array to find the maximum profit by buying on one day and selling on another

• Calculate profit by subtracting buying price from selling price

• Return the maximum profit obtained

To take backup of a table and insert values in the same table of another database.

• Use SQL Server Management Studio to take backup of the table

• Restore the backup in the target database

• Use SQL queries to insert values from source table to target table

Some exceptions in Selenium are NoSuchElementException, TimeoutException, StaleElementReferenceException.

• NoSuchElementException occurs when an element is not found in the DOM.

• TimeoutException occurs when a command takes longer than the timeout value to complete.

• StaleElementReferenceException occurs when a referenced element is no longer attached to the DOM.

Selenium is a popular automation testing tool used for web applications. It has various methods and commands for testing.

• Selenium WebDriver is used for automating web applications

• findElement() method is used to locate an element on the web page

• sendKeys() method is used to enter text into a text field

• click() method is used to click on an element

• getTitle() method is used to get the title of the web page

• getText() method is used to get the text of an element

• getAttribute() method ...read more