100+ Senior Automation Test Engineer Interview Questions and Answers

Answers to questions related to automation testing using Selenium

• Overloading is when a method has the same name but different parameters in the same class, while overriding is when a subclass provides its own implementation of a method already defined in its superclass

• Locators in Selenium are used to identify web elements on a web page

• The syntax of xpath locator is //tagname[@attribute='value']

• Methods to write test cases include boundary value analysis, equivalence partitioni...read more

Different types of assertions and syntax for hard assertion in TestNG

• Types of assertions: Hard assertions and Soft assertions

• Syntax for hard assertion in TestNG: Assert.assertEquals(expected, actual)

List, Set, and Map are different types of collections in Java used to store and manipulate groups of objects.

• List is an ordered collection that allows duplicate elements. Example: ArrayList, LinkedList

• Set is a collection that does not allow duplicate elements. Example: HashSet, TreeSet

• Map is a collection of key-value pairs where each key is unique. Example: HashMap, TreeMap

To fetch unique elements from a column, use the DISTINCT keyword in SQL.

• Use the SELECT statement with the DISTINCT keyword.

• Specify the column name from which you want to fetch unique elements.

• Example: SELECT DISTINCT column_name FROM table_name;

• You can also use GROUP BY clause to group the unique elements based on another column.

• Example: SELECT column_name, COUNT(*) FROM table_name GROUP BY column_name;

I prefer not to disclose my current CTC. As for my expected CTC, I am looking for a competitive salary based on my experience and skills.

• I am open to negotiation based on the job responsibilities and company's budget

• I have researched the market rates for similar positions and have a realistic expectation

• I am looking for a salary that reflects my experience and skills

• I am also interested in other benefits such as health insurance, retirement plans, and paid time off

To copy a table in MySQL, use the CREATE TABLE statement with the SELECT statement.

• Use the CREATE TABLE statement with the SELECT statement to copy a table.

• Specify the new table name after the CREATE TABLE statement.

• Specify the original table name after the SELECT statement.

• Add any additional conditions or clauses as needed.

• Example: CREATE TABLE new_table SELECT * FROM original_table WHERE condition;

To fetch 1st 5 records in SQL, use the LIMIT clause.

• Use the SELECT statement to specify the columns to retrieve.

• Use the FROM clause to specify the table to retrieve data from.

• Use the LIMIT clause to specify the number of records to retrieve.

• The syntax is: SELECT column1, column2, ... FROM table_name LIMIT 5;

• The first 5 records will be returned.

Query to find second highest salary in SQL

• Use the ORDER BY clause to sort the salaries in descending order

• Use the LIMIT clause to select the second highest salary

• Use a subquery to exclude the highest salary from the results

The syntax for using driver.findElement in Selenium is driver.findElement(By locator)

• Use driver.findElement(By locator) to locate a single element on the web page

• Specify the locator strategy (e.g. By.id, By.name, By.xpath) to identify the element

• Example: WebElement element = driver.findElement(By.id("username"));

Types of wait mechanisms include implicit wait, explicit wait, fluent wait, and thread.sleep.

• Implicit wait: Waits for a certain amount of time before throwing a NoSuchElementException.

• Explicit wait: Waits for a certain condition to occur before proceeding further.

• Fluent wait: Waits for a condition to be true with a specified polling frequency.

• Thread.sleep: Pauses the execution for a specified amount of time.

Selenium grid is used to run test suites in parallel across multiple machines.

• Selenium grid allows for distributed testing across multiple machines

• Tests are divided into smaller suites and run in parallel on different nodes

• Parallel execution reduces test execution time and increases efficiency

• Example: Running smoke tests on one node and regression tests on another node simultaneously

Use a Set data structure to remove duplicates from an array of strings.

• Create a Set from the array to automatically remove duplicates

• Convert the Set back to an array to get the unique values

Cypress is a JavaScript-based end-to-end testing framework for web applications.

• Cypress allows for easy and fast testing of web applications

• It has a simple and intuitive API for writing tests

• Cypress provides automatic waiting and retrying for elements and network requests

• It also has a built-in dashboard for recording and analyzing test results

Answering questions related to testing and automation using Selenium and Java

• Different kinds of testing include unit testing, integration testing, system testing, acceptance testing, and regression testing

• Important components of Agile include continuous integration, continuous delivery, and frequent feedback loops

• Re-testing is testing the same functionality again after fixing defects, while regression testing is testing the unchanged functionality to ensure it still works

• Diff...read more

Testing Pyramid is a testing strategy that suggests the right balance of different types of automated tests.

• The Testing Pyramid consists of three layers: Unit Tests, Service Tests, and UI Tests.

• Unit Tests are at the bottom of the pyramid and focus on testing individual components or functions in isolation.

• Service Tests are in the middle layer and focus on testing the interactions between different components or services.

• UI Tests are at the top of the pyramid and focus on test...read more

Use SQL queries to fetch records based on conditions

• Use SELECT statement to fetch records

• Add WHERE clause to specify conditions

• Use operators like =, >, <, etc. to define conditions

• Consider using JOIN for fetching records from multiple tables

Spark is a fast and general-purpose cluster computing system. Legacy defect refers to a known issue in older versions of software. XPath is a way to navigate XML documents. TestNG allows running test cases multiple times. Approach to completing a task in less time involves prioritizing and optimizing.

• Spark is a cluster computing system for big data processing.

• Legacy defect is a known issue in older versions of software that has not been fixed.

• XPath is a language used to navig...read more

Frames in Selenium can be managed using switchTo() method to navigate between frames.

• Use driver.switchTo().frame() method to switch to a frame by index, name or WebElement

• Use driver.switchTo().defaultContent() method to switch back to the main content

• Use driver.switchTo().parentFrame() method to switch to the parent frame

Smoke testing is a quick test to check if the build is stable, sanity testing is a subset of regression testing focusing on specific areas, and regression testing is a comprehensive test to ensure no new bugs are introduced.

• Smoke testing is a preliminary test to check if the critical functionalities work without major issues after a build is deployed.

• Sanity testing is a subset of regression testing that focuses on specific areas or functionalities to ensure they still work af...read more

Mobile testing is important for ensuring the functionality and usability of applications on various devices. Techniques like scrolling and touch actions are essential for testing mobile apps.

• Mobile testing ensures that applications work correctly on different devices and screen sizes.

• Scrolling on a phone can be done using methods like swipe or scroll actions in automation tools like Appium.

• The Touch Actions class in Selenium allows for performing complex touch gestures like t...read more

To run tests on iOS or Android devices using Appium, specify the platformName capability in desired capabilities.

• Specify platformName capability as 'iOS' for iOS devices and 'Android' for Android devices

• Include other necessary desired capabilities like deviceName, platformVersion, appPackage, appActivity, etc.

• Example: capabilities.setCapability('platformName', 'iOS');

Use SQL query to fetch managers with at least 5 employees under them

• Use GROUP BY clause to group by manager

• Use HAVING clause to filter managers with count of employees >= 5

• Join manager table with employee table using manager_id

Windows and frames can be handled in Selenium using switchTo() method.

• Use driver.switchTo().window() to switch between windows.

• Use driver.switchTo().frame() to switch between frames.

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

Custom commands in Cypress are user-defined functions that can be reused across multiple tests.

• Custom commands can be defined in the 'commands.js' file in the Cypress support folder.

• They can be used to encapsulate complex logic or to simplify repetitive tasks.

• Custom commands can be chained with Cypress commands to create more complex test scenarios.

• Examples of custom commands include logging in a user, navigating to a specific page, or interacting with a custom UI component.

Full join is a type of SQL join that returns all the rows from both tables, matching rows from both tables and nulls where there is no match.

• Full join is also known as a full outer join.

• It is used to combine data from two tables where some of the data may not match.

• The result set includes all the rows from both tables, with nulls where there is no match.

• Full join is represented by the keyword 'FULL OUTER JOIN' in SQL.

• Example: SELECT * FROM table1 FULL OUTER JOIN table2 ON tab...read more

Status codes in API testing indicate the outcome of the request made to the API.

• 200 - OK: Request was successful

• 201 - Created: Request resulted in a new resource being created

• 400 - Bad Request: Request was invalid

• 401 - Unauthorized: Request requires authentication

• 404 - Not Found: Resource not found

• 500 - Internal Server Error: Server encountered an error

Convert string to array and extract vowels into a new array

• Iterate through each character in the string

• Check if the character is a vowel (a, e, i, o, u)

• Add the vowel to a new array of strings