Selenium Cucumber Interview Questions
Top 10 Must-Ask
Selenium Cucumber Interview Questions
Selenium Cucumber is a popular test automation tool that combines the power of Selenium and the versatility of Cucumber, allowing for easy integration of behavior-driven development (BDD) practices into the testing process. During interviews, candidates may be asked about their knowledge and experience with Selenium Cucumber, including its advantages, limitations, implementation, and integration. They may also be asked about their understanding of BDD principles, Gherkin syntax, and the role of step definitions in writing automated tests. Additionally, knowledge of the Page Object Model, cross-browser testing, and handling dynamic elements may also be assessed.
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1 - What is Cucumber?
Cucumber is an open source software testing tool that is used to test the behavior of software in an easily readable and understandable format for non technical people. It utilizes a BDD (Behavior Driven Development) approach and is written in the plain text format, known as Gherkin.
2) What are the key features of Cucumber?
Cucumber has several key features that make it a popular choice among software testers. Some of these features include:
Ability to write test scenarios in a plain text format using Gherkin syntax
Integration with other testing frameworks like Selenium, Capybara, and Watir
Support for multiple programming languages such as Java, Ruby, and Python
Reusable step definitions for test scenarios
Support for centralized and distributed test execution
Easy integration with CI/CD pipelines for automated testing.
3) How does Cucumber execute test scenarios?
Cucumber uses a feature file, which contains a collection of scenarios written in Gherkin syntax. These scenarios are then linked to step definitions, which are written in programming languages like Java or Ruby, and contain the logic for executing each step of the scenario. When a scenario is executed, Cucumber matches each step to its corresponding step definition and executes the code accordingly.
4) What is the purpose of tags in Cucumber?
Tags in Cucumber are used to organize and filter test scenarios. They allow testers to run specific scenarios or groups of scenarios based on their assigned tags. Tags can also be used to denote different environments, such as ‘smoke’ or ‘regression’, and to exclude certain scenarios from an execution.
5) How do you handle dynamic values in test scenarios using Cucumber?
Cucumber provides the ability to use regular expressions in step definitions, which allows testers to handle dynamic values in scenarios. Regular expressions are used to match a specific pattern within a step, and then the corresponding value can be extracted and used in the logic of the step definition.
6) What are the advantages of using Cucumber for testing?
Some of the advantages of using Cucumber for testing include:
Increased collaboration between technical and non technical team members, as scenarios are written in a human readable format
Improved test coverage by using Gherkin scenarios to document the expected behavior of software
Reusable step definitions that can be shared across scenarios, reducing duplication of code
Easy integration with other testing tools and frameworks, increasing flexibility and efficiency
Allows for end to end testing, as multiple systems can be integrated using Cucumber and Selenium
7) How can you generate reports in Cucumber?
Cucumber provides a built in plugin called ‘Pretty’ that generates HTML formatted reports. These reports provide detailed information on the test execution, including the number of scenarios and steps passed, failed, or skipped. Additionally, there are several third party tools and plugins available for generating more advanced reports in different formats.
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8) Can you run Cucumber tests in parallel?
Yes, Cucumber tests can be run in parallel by using a test runner, such as JUnit or TestNG, and specifying the number of threads to be used for execution. This helps to speed up the testing process and ensures better resource utilization.
9) How can you handle authentication in Cucumber?
Authentication can be handled in Cucumber by passing valid login credentials as parameters in the feature file. These parameters can then be accessed in the step definitions and used for authentication purposes.
10) What is a scenario outline in Cucumber?
A scenario outline is used to execute the same scenario with different input values. It is denoted by the keyword ‘Scenario Outline’ and is followed by an Examples table that contains the different input values for each iteration of the scenario.
11) How does Cucumber handle data driven testing?
Data driven testing in Cucumber is achieved by using a combination of Scenario Outlines and Examples tables. The Examples table contains the different sets of input data, and the placeholders in the Scenario Outline are replaced with the corresponding values from the table during execution.
12) How can you perform API testing using Cucumber?
Cucumber can be integrated with tools like RestAssured or Postman to perform API testing. The feature files can be used to outline the different API calls and their respective expected responses, and the step definitions can be used to validate these responses.
13) How can you integrate Cucumber with Selenium?
Cucumber can be integrated with Selenium by using the Selenium WebDriver API in the step definitions. This allows for the automation of web application testing using Cucumber scenarios written in Gherkin syntax.
14) Can Cucumber be used for manual testing?
Yes, Cucumber can be used for manual testing by creating scenarios with manual steps. These steps can then be executed by test engineers, and the results can be recorded in the reports. However, it is primarily used for automation testing.
15) What are the potential drawbacks of using Cucumber?
Some potential drawbacks of using Cucumber include:
Steep learning curve for beginners due to the combination of Gherkin syntax and programming languages
Difficulty in maintaining and updating feature files and step definitions as the application evolves
Can be time consuming to set up and configure for new projects
Requires technical expertise to create and maintain reusable step definitions.
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