20 Karate Framework Interview Questions and Answers

Karate is a popular open-source test automation framework for web services and web applications. It is written in the Java programming language and can be used with any testing tool or framework. When interviewing for a position that will involve test automation, it is likely that the interviewer will ask you questions about your experience with Karate. In this article, we review some of the most common Karate questions and provide tips on how to answer them.

Karate Framework Interview Questions and Answers

Here are 20 commonly asked Karate Framework interview questions and answers to prepare you for your interview:

1. What is Karate?

Karate is a testing framework designed to make it easier to work with web services and API testing. It is built on top of Cucumber and HttpClient, and it aims to simplify the process of setting up and maintaining test cases.

2. Can you explain the architecture of Karate framework?

The Karate framework is built on top of Cucumber and HttpClient, and it uses the Java programming language. The framework is designed to make it easy to write tests for web services, and it includes a number of features that make it well-suited for testing RESTful services. One of the key features of Karate is that it allows tests to be written in a concise and readable syntax.

3. How do you write scenarios in Karate DSL?

In Karate DSL, scenarios are written in a very specific format that includes a keyword for each step of the scenario. For example, a scenario might start with the keyword *Given* to set the stage, followed by the keyword *When* to describe the action that takes place, and then the keyword *Then* to describe the expected outcome.

4. Is it possible to use a Java class within a feature file using Karate? If yes, then how?

Yes, it is possible to use a Java class within a feature file using Karate. You can do this by adding the @Karate.Import tag to the top of your feature file, followed by the fully qualified name of your Java class.

5. Are there any limitations on what types of objects can be serialized into JSON and sent to the server as part of HTTP requests?

There are no real limitations, but there are some practical considerations. For example, you wouldn’t want to try to serialize an entire database into JSON and send it to the server. That would be way too much data and would probably overwhelm the server. So, while there are no technical limitations, you do need to use some common sense when deciding what to serialize into JSON.

6. Why are assertions not recommended in Karate?

Assertions are not recommended in Karate because they can lead to false positives. A false positive is when an assertion passes even though the underlying code is not working as expected. This can happen if the assertion is not specific enough, or if the data used in the assertion is not representative of the data that will be used in production.

7. How do you perform validation with Karate?

You can perform validation in Karate by using the assert command. This command will allow you to check for the presence or absence of a particular element, attribute, or value in the response body. You can also use the assert command to check that the response body meets certain criteria, such as being of a certain length or having a certain number of elements.

8. What are some best practices that you should follow when writing Karate tests?

Some best practices to follow when writing Karate tests include using the @ignore tag on tests that are not yet ready to be run, using data-driven testing to increase test coverage, and using the @tag feature to group tests together.

9. Is it possible to run Cucumber features in parallel using Karate? If yes, then how?

Yes, it is possible to run Cucumber features in parallel using Karate. You can do this by using the @CucumberOptions annotation and specifying the number of threads that you want to use.

10. What’s the difference between match and contains keywords when used for validating values within Karate scripts?

The match keyword will check if the given value exactly matches the expected value, while the contains keyword will check if the given value contains the expected value.

11. What’s the best way to pass data from one scenario to another?

There are a few different ways to pass data from one scenario to another in the Karate framework. One way is to use the built-in ‘call’ function. This function allows you to call another scenario and pass in data as arguments. Another way to pass data is to use the ‘karate.set’ function. This function allows you to set a variable that can be accessed by other scenarios.

12. How does Karate compare to other BDD frameworks like Cucumber or JBehave?

Karate is a newer framework that is designed specifically for testing web services. It is built on top of Cucumber, but it is much more lightweight and easier to use. Karate also has built-in support for HTTP, JSON, and XML, which makes it a good choice for testing web services.

13. When would you use Karate over Cucumber and JMeter?

Karate is a newer framework that is designed specifically for testing web services. It is built on top of Cucumber, so it shares many of the same features. However, it is also designed to be easier to use and more concise. It also has built-in support for performance testing. So, if you are looking for a framework to test web services, Karate would be a good choice.

14. What sort of testing can you perform using Karate?

Karate is a testing framework that allows for a wide variety of testing to be performed, from unit testing to API testing to UI testing. Karate also allows for easy integration with other testing tools, making it a versatile tool for any tester.

15. What’s your opinion about test report generation by Karate?

I think it’s a great feature of the Karate framework. It allows you to easily generate reports that can be shared with stakeholders to show the progress of your testing.

16. What is the purpose of the “karate-config.js” file?

The karate-config.js file is used to configure various settings for the Karate framework. This includes things like setting the base URL for where the API is located, as well as setting up any authentication that may be required.

17. What is the usage of karate global variables?

Global variables in karate are variables that are available to all test scripts. These variables can be used to store data that needs to be accessed by multiple test scripts, or to store data that is used across multiple test runs. Global variables can be accessed by using the ‘karate.get’ and ‘karate.set’ methods.

18. What are some common mistakes made by developers when using Karate Framework?

One common mistake is not reading the documentation carefully. The Karate Framework is very powerful, but it is also complex. As a result, it is easy to make mistakes if you do not take the time to understand how it works. Another common mistake is not using the proper tools when working with Karate. For example, many developers try to use Karate with JUnit, but this is not the recommended approach. Finally, some developers try to use Karate for tasks that it is not well suited for, such as performance testing.

19. Should we always prefer Karate over Selenium WebDriver?

While Karate is a great tool for automating web testing, it is not always the best option. Selenium WebDriver is still a widely used and well-supported tool, so it really depends on the specific needs of your project. If you are looking for a tool that is specifically designed for web testing, then Karate may be a good option. However, if you are looking for a more general-purpose tool, then Selenium WebDriver may be a better choice.

20. What are some ways you can achieve continuous integration with Karate automation?

There are a few ways to achieve continuous integration with Karate automation. One way is to use a tool like Jenkins to automatically run your tests every time there is a change to the codebase. Another way is to use a tool like Maven to manage your dependencies and run your tests automatically.