Datamatics Global Services Automation Test Engineer Interview Questions and Answers

Automate sauce demo login functionality using code

• Use Selenium WebDriver to automate the login process

• Identify the username and password fields using locators

• Enter valid credentials and click on the login button

• Verify successful login by checking for the presence of a welcome message

Automate getting product prices by their names

• Create a function that takes in an array of product names as input

• Use a web scraping tool like Selenium to extract prices from a website

• Map the product names to their corresponding prices and return the result

Project structure refers to the organization of files, folders, and resources within a software project.

• Main folders like src (source code), test (test cases), lib (libraries), docs (documentation)

• Subfolders for specific modules or components

• Configuration files like pom.xml, package.json, etc.

• Build scripts like Jenkinsfile, Dockerfile

• Version control files like .gitignore, .gitattributes

• README.md file for project overvi

HashMap allows null values and keys, while HashTable does not. HashMap is not synchronized, making it faster in performance compared to HashTable.

• HashMap allows null values and keys, while HashTable does not.

• HashMap is not synchronized, making it faster in performance compared to HashTable.

• HashMap is preferred for non-thread-safe applications, while HashTable is preferred for thread-safe applications.

Stale Element Reference Exception occurs when an element is no longer attached to the DOM.

• Occurs when an element is located in the DOM, but later becomes detached or deleted

• Common in dynamic web applications where elements are frequently changing

• Can be resolved by re-locating the element before interacting with it

Collection is an interface in Java that represents a group of objects, while Collections is a utility class in Java that contains static methods for operating on collections.

• Collection is an interface in Java, while Collections is a utility class.

• Collection is used to represent a group of objects, while Collections is used for operations on collections like sorting, searching, etc.

• Example: List is a Collection interfac...read more

POM stands for Page Object Model. It is a design pattern used in test automation to create reusable and maintainable code.

• POM helps in separating the test scripts from the web elements, making the code more organized and easier to maintain.

• It improves code reusability by creating separate classes for each web page, containing all the elements and actions related to that page.

• POM reduces code duplication and enhances te...read more

BDD is a software development process that encourages collaboration between developers, QA, and non-technical stakeholders.

• BDD stands for Behavior-Driven Development

• It focuses on defining the behavior of the system through examples in plain text

• Uses a common language (Gherkin syntax) to describe requirements and tests

• Helps in improving communication and understanding between team members

• Popular BDD tools include Cucumb

Scenario is a single test case while scenario outline is a template for multiple test cases with different inputs.

• Scenario is a single test case with specific inputs and expected outcomes

• Scenario outline is a template for multiple test cases with placeholders for different inputs

• In scenario outline, examples table is used to provide different input values for each test case

OOPs (Object-Oriented Programming) is a programming paradigm based on the concept of objects, which can contain data in the form of fields and code in the form of procedures.

• OOPs focuses on creating objects that interact with each other to solve a problem

• Key concepts include encapsulation, inheritance, polymorphism, and abstraction

• Encapsulation: Bundling data and methods that operate on the data into a single unit

• Inher...read more