Synechron Senior Automation Engineer Interview Questions and Answers

FindElement returns a single web element, while FindElements returns a list of matching elements.

• FindElement: Returns the first matching web element based on the specified criteria.

• Example: driver.FindElement(By.Id('submit')) retrieves the first element with the ID 'submit'.

• FindElements: Returns a collection of all matching web elements as a list.

• Example: driver.FindElements(By.ClassName('button')) retrieves all elemen...read more

The wait mechanism in Selenium manages timing issues during automated tests, ensuring elements are ready for interaction.

• Implicit Wait: Sets a default wait time for the entire session. Example: driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);

• Explicit Wait: Waits for a specific condition to occur before proceeding. Example: WebDriverWait wait = new WebDriverWait(driver, 10); wait.until(ExpectedConditions...read more

Selenium provides a straightforward way to capture screenshots using the TakesScreenshot interface.

• Import the necessary classes: 'import org.openqa.selenium.TakesScreenshot;'

• Cast the WebDriver instance to TakesScreenshot: 'TakesScreenshot ts = (TakesScreenshot) driver;'

• Use the getScreenshotAs method to capture the screenshot: 'File src = ts.getScreenshotAs(OutputType.FILE);'

• Save the screenshot to a desired location: 'F...read more

Playwright offers modern features, better performance, and cross-browser support compared to Selenium.

• Cross-browser support: Playwright supports Chromium, Firefox, and WebKit, allowing testing across multiple browsers with a single API.

• Auto-waiting: Playwright automatically waits for elements to be ready before performing actions, reducing flakiness in tests.

• Headless mode: Playwright runs tests in headless mode by defa...read more

TestNG provides retry mechanisms to automatically re-run failed tests, enhancing test reliability and coverage.

• TestNG allows the use of the IRetryAnalyzer interface to define custom retry logic.

• You can implement the retry logic by creating a class that implements IRetryAnalyzer and overriding the retry method.

• Example: If a test fails, the retry method can return true to re-execute the test up to a specified limit.

• You c...read more

A feature file in Cucumber defines application behavior using Gherkin syntax for BDD testing.

• Written in Gherkin language, which uses a simple syntax for defining test cases.

• Contains scenarios that describe specific functionalities, e.g., 'Feature: User Login'.

• Each scenario includes steps defined by Given, When, Then keywords, e.g., 'Given the user is on the login page'.

• Supports multiple languages and can be easily unde...read more

Reusable components in Cucumber enhance test efficiency by allowing shared steps and definitions across multiple scenarios.

• Step Definitions: Common actions can be defined once and reused in multiple scenarios. Example: A step like 'Given I am on the login page' can be reused.

• Hooks: Setup and teardown actions can be defined globally or for specific scenarios. Example: Using @Before to initialize a browser before tests.

• D...read more

A scenario outline in Cucumber allows for parameterized testing by defining a template for multiple scenarios with varying inputs.

• Scenario outlines use 'Scenario Outline' keyword to define a template.

• Examples are provided using the 'Examples' keyword to specify different input values.

• Each example row corresponds to a test case, allowing for efficient reuse of scenarios.

• Example: Given a user with <username> and &l...read more

A StaleElementReferenceException occurs when a web element is no longer attached to the DOM.

• It typically happens when the DOM is updated after the element was located.

• Example: Clicking a button that refreshes the page can cause this exception.

• To handle it, re-locate the element before interacting with it.

• Using try-catch blocks can help manage this exception gracefully.

Inheritance, encapsulation, and polymorphism are core OOP principles in Java that enhance code reusability and flexibility.

• Inheritance allows a class to inherit properties and methods from another class. Example: class Dog extends Animal.

• Encapsulation restricts access to certain components of an object, promoting data hiding. Example: private variables with public getters/setters.

• Polymorphism enables methods to do diff...read more

Use SQL GROUP BY and HAVING to find duplicate emails in a table.

• Use SELECT statement to specify the email column.

• GROUP BY the email column to aggregate results.

• Use HAVING COUNT(email) > 1 to filter duplicates.

• Example query: SELECT email, COUNT(email) FROM users GROUP BY email HAVING COUNT(email) > 1;

HTTP status codes indicate the result of a server's attempt to process a request, categorized into five classes.

• 1xx: Informational - e.g., 100 Continue, 101 Switching Protocols.

• 2xx: Success - e.g., 200 OK, 201 Created, 204 No Content.

• 3xx: Redirection - e.g., 301 Moved Permanently, 302 Found, 304 Not Modified.

• 4xx: Client Errors - e.g., 400 Bad Request, 401 Unauthorized, 404 Not Found.

• 5xx: Server Errors - e.g., 500 Inter...read more