10+ TCS Interview Questions and Answers

Yes, I have faced synchronization problems while automating tests.

• Yes, I have encountered synchronization issues when elements load at different speeds on a webpage.

• To overcome this, I have used explicit waits in Selenium to wait for specific conditions before proceeding with the test.

• I have also used implicit waits to set a default waiting time for the elements to load.

• In some cases, I have used Thread.sleep() to pause the execution for a specific time to ensure synchronizat...read more

A framework is a set of guidelines, coding standards, concepts, and practices that provide structure and support for automated testing.

• Framework helps in organizing and executing automated tests efficiently.

• Common frameworks include Data-Driven, Keyword-Driven, Hybrid, and Behavior-Driven Development (BDD).

• In my project, I have worked on a Data-Driven framework where test data is separated from test scripts for easy maintenance.

Methods are functions within a class that define behavior, while constructors are special methods used to initialize objects.

• Methods are used to perform actions or operations within a class.

• Constructors are special methods used to initialize objects when they are created.

• Methods can have return types and parameters, while constructors do not have return types and have the same name as the class.

• Example: Method 'calculateArea()' in a 'Rectangle' class calculates the area, whil...read more

Other exceptions handled in automation testing besides NoSuchElementException

• ElementNotVisibleException - when element is present in DOM but not visible on the page

• StaleElementReferenceException - when element is no longer attached to the DOM

• TimeoutException - when a command does not complete in a specific time frame

• NoSuchWindowException - when the window target to be switched doesn't exist

• InvalidElementStateException - when element is in an invalid state for the operation

Inheritance is a concept in object-oriented programming where a class inherits properties and behaviors from another class.

• Types of inheritance: single inheritance, multiple inheritance, multilevel inheritance, hierarchical inheritance

• Example: Class B inherits from Class A, Class C inherits from Class B, creating a multilevel inheritance

• Example: Class D inherits from Class A and Class B, demonstrating multiple inheritance

TestNG provides the ability to re-run failed test cases using the 'retryAnalyzer' feature.

• Implement a custom 'IRetryAnalyzer' class to define the retry logic for failed test cases.

• Specify the 'retryAnalyzer' attribute in the @Test annotation with the custom retry analyzer class.

• Set the 'retryAnalyzer' attribute to the custom class name in the testng.xml file to apply the retry logic globally.

• Failed test cases will be automatically re-executed based on the logic defined in the...read more

The final keyword in Java can be used to declare constants, prevent method overriding, and prevent inheritance.

• To declare constants in Java

• To prevent method overriding in Java

• To prevent inheritance in Java

Relative xpath is based on the current position of an element, while absolute xpath starts from the root element.

• Relative xpath is shorter and less prone to breaking with changes in the DOM structure.

• Absolute xpath is longer and more specific, starting from the root element of the HTML document.

• Relative xpath is preferred for dynamic web elements, while absolute xpath is more suitable for static elements.

• Example: Relative xpath - //input[@id='username'], Absolute xpath - /htm...read more

Fluent wait, implicit wait, and explicit wait are different types of wait strategies used in automation testing to handle synchronization issues.

• Fluent wait is a dynamic wait mechanism in Selenium WebDriver that waits for a condition to be true with a specified polling frequency.

• Implicit wait is a global wait applied to all elements in the WebDriver instance, allowing a certain amount of time for elements to load before throwing an exception.

• Explicit wait is a targeted wait f...read more

Xpath for an Anchor tag in Automation Testing

• Use the 'a' tag in the Xpath expression to target anchor tags

• Use '@href' attribute to specify the link of the anchor tag

• Example: //a[@href='https://www.example.com']

Java program to reverse a string

• Create a StringBuilder object

• Use the reverse() method to reverse the string

• Convert the StringBuilder object back to a string

Interface in Java is a reference type in Java, similar to a class, that can contain only constants, method signatures, default methods, static methods, and nested types.

• An interface is a blueprint of a class that can have abstract methods and constants.

• Interfaces are used to achieve abstraction and multiple inheritance in Java.

• Classes can implement multiple interfaces but can only extend one class.

• Example: interface Shape { void draw(); }

• Example: class Circle implements Shape...read more

Yes, TestNG supports crossbrowser testing by allowing the execution of test cases on multiple browsers in parallel.

• TestNG allows the use of @Parameters annotation to pass browser type as a parameter to test methods.

• TestNG can be integrated with Selenium WebDriver to run tests on different browsers like Chrome, Firefox, and Safari.

• TestNG provides the flexibility to run tests in parallel on multiple browsers for faster execution and better test coverage.

An interface in automation testing refers to the point of interaction between two systems or components.

• An interface defines the methods that a class must implement, without specifying how they are implemented.

• Interfaces allow for loose coupling between different components, making it easier to change or update one without affecting the other.

• In automation testing, interfaces are used to interact with the application under test, sending input and receiving output.

• Examples of ...read more

Polymorphism is the ability of a function or method to behave differently based on the object it is acting upon.

• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• It enables a single interface to represent multiple data types.

• Examples include method overloading and method overriding in object-oriented programming.

Selenium Architecture is a framework that consists of different components for automated testing of web applications.

• Selenium WebDriver: It is the core component that allows interaction with web elements.

• Selenium Grid: It enables parallel execution of tests across different browsers and environments.

• Selenium IDE: It is a record and playback tool for creating test scripts.

• Selenium RC (Remote Control): It is the predecessor of WebDriver and is now deprecated.

• Selenium Server: It...read more