Cucumber Interview Questions and Answers for freshers

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Cucumber Interview Questions and Answers for Freshers

  1. What is Cucumber?

    • Answer: Cucumber is a Behavior-Driven Development (BDD) tool used for writing and running automated acceptance tests. It allows you to write tests in plain English (Gherkin language), making them easily understandable by both technical and non-technical stakeholders.

  2. Explain the Gherkin language.

    • Answer: Gherkin is a business-readable domain-specific language (DSL) used to define test cases in Cucumber. It uses keywords like `Feature`, `Scenario`, `Given`, `When`, `Then`, `And`, `But` to structure the tests. These keywords describe the context, action, and expected outcome of a test scenario.

  3. What are the benefits of using Cucumber?

    • Answer: Cucumber offers several benefits, including improved collaboration between developers, testers, and business stakeholders; living documentation that reflects the application's behavior; early detection of defects; and easier maintenance of tests.

  4. What are Feature files?

    • Answer: Feature files are plain text files written in Gherkin language that contain the acceptance criteria for a specific feature of the application. They describe the behavior of the system from the user's perspective.

  5. Explain the role of step definitions in Cucumber.

    • Answer: Step definitions are pieces of code (written in a programming language like Java, Ruby, or Python) that provide the implementation for the steps defined in the feature files. They connect the human-readable steps in Gherkin to the actual automation code.

  6. How do you run Cucumber tests?

    • Answer: Cucumber tests are run from the command line using a Cucumber runner. The runner executes the feature files and their corresponding step definitions. The output typically shows whether the tests passed or failed.

  7. What are tags in Cucumber?

    • Answer: Tags in Cucumber allow you to categorize and filter test scenarios. You can assign tags to features or scenarios, and then run only the tests with specific tags, making it easier to manage and run subsets of tests.

  8. Explain the concept of background in Cucumber.

    • Answer: The `Background` section in a feature file allows you to define steps that should be executed before each scenario in that feature. This is useful for setting up common preconditions for multiple scenarios.

  9. What are hooks in Cucumber?

    • Answer: Hooks are methods that are executed before or after certain events in Cucumber, such as before/after a scenario, before/after a feature, or before/after a suite. They are commonly used for setup and teardown tasks.

  10. How do you handle data-driven testing in Cucumber?

    • Answer: Data-driven testing in Cucumber involves running the same scenario multiple times with different sets of input data. This can be achieved using external data sources like CSV files, Excel spreadsheets, or databases. Cucumber provides mechanisms to read data from these sources and feed it into the test scenarios.

  11. How to integrate Cucumber with Selenium?

    • Answer: Cucumber integrates with Selenium to automate web browser interactions. Selenium WebDriver is used within step definitions to interact with web elements, and Cucumber provides the framework for defining and running tests.

  12. What is the difference between Scenario and Scenario Outline?

    • Answer: A Scenario represents a single test case, while a Scenario Outline allows you to run the same scenario with multiple sets of data using examples table.

  13. Explain the concept of DRY (Don't Repeat Yourself) in Cucumber.

    • Answer: DRY principle in Cucumber advocates for avoiding code duplication. This is accomplished through well-structured feature files, reusable step definitions, and utilizing tables and examples for data-driven testing.

  14. How to handle exceptions in Cucumber step definitions?

    • Answer: Exceptions in step definitions are usually handled using try-catch blocks. Appropriate error messages can be logged, and the test can be marked as failed if needed.

  15. What are some common Cucumber reporting plugins?

    • Answer: Popular reporting plugins include ExtentReports, Allure, and HTML reports, generating comprehensive reports on test execution and results.

  16. What is the role of a Page Object Model (POM) in Cucumber?

    • Answer: POM helps in organizing UI elements and actions into reusable objects, reducing code duplication and improving maintainability of tests.

  17. How to parameterize step definitions in Cucumber?

    • Answer: Step definitions can accept parameters to make them more reusable and adaptable to different inputs. These parameters are passed from the Gherkin steps.

  18. Explain the use of regular expressions in Cucumber step definitions.

    • Answer: Regular expressions provide flexibility in matching Gherkin step text, allowing for more concise and robust step definitions that can handle variations in step text.

  19. How to debug Cucumber tests?

    • Answer: Debugging techniques include using IDE debuggers, logging statements, and analyzing test reports for identifying and resolving issues.

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