Why We Use Karate Framework

When it comes to testing web applications, there are different frameworks available that help automate the testing process. Among these frameworks, Karate stands out as a popular choice for software developers. In this blog post, we will explain why we use Karate framework and what benefits it brings to our software testing process.

What is Karate Framework?

Karate is an open-source behavioral-driven testing framework. It makes it easy to write and execute automated tests for web applications and RESTful APIs. Karate is built on top of the popular Cucumber-JVM framework and provides a higher-level API for implementing integration tests, API tests, and UI automation tests. In addition, Karate offers a simple and intuitive syntax for writing tests in Gherkin format, making it easy to read and write for developers, testers, and business stakeholders.

Why do we use Karate Framework?

There are several reasons why Karate has become our preferred choice for testing web applications:

1. Easy Setup and Integration

Setting up Karate is a simple process. As a Maven-based project, it only requires adding the Karate dependency to the pom.xml file. Karate integrates with most build tools such as Maven, Gradle, and Ant, and can be easily integrated with Continuous Integration (CI) tools such as Jenkins and Bamboo. Moreover, Karate supports running tests in parallel, which saves time and resources.

2. readable and maintainable tests

Karate tests are written in Gherkin format, which is a natural language that is easy to read and understand. This makes it easier for developers, testers, and business stakeholders to understand the functionality being tested. In addition, it promotes collaboration between team members as non-technical stakeholders can easily read and validate the tests. Furthermore, Karate provides a built-in scenario outline feature that supports data-driven testing, which reduces code duplication, improves readability, and makes test maintenance easier.

3. Supports API and UI Automation

Karate is built with a unified API that supports different testing needs. Whether it’s testing RESTful APIs, UI automation, or end-to-end (E2E) testing, Karate provides a simple and intuitive syntax for all types of testing. In addition, Karate integrates with popular UI automation tools like Selenium and Appium, enabling developers and testers to write end-to-end tests covering both the UI and API. This reduces the need to maintain separate tests for UI and API, thus saving time and improving test coverage.

4. Robust Reporting

Karate provides a comprehensive HTML report which shows test results in a clear and concise way. The report includes detailed information such as test execution time, the number of tests passed and failed, and the reason for test failure. Furthermore, the report includes screenshots and a detailed log of each step of the test, which makes it easier to troubleshoot and fix issues.

5. Extensibility and Flexibility

Karate is built as a Java library and can be easily extended through Java code. This allows developers to add custom Java code to their tests, offering flexibility in defining complex scenarios. Moreover, Karate supports the testing of SOAP web services, making it a versatile testing tool.

Final Words

Overall, Karate framework offers several advantages in testing web applications, such as easy setup and integration, readable and maintainable tests, support for API and UI automation, robust reporting, and extensibility. At our company, Karate has become our preferred choice for testing web applications, and we have seen significant improvements in our testing process since adopting it. If you are looking for a tool that can simplify your testing process and improve test quality, Karate framework is definitely worth considering.

Frequently asked questions about why we use Karate framework

Karate is an open-source test automation framework designed to make API testing more efficient and less complicated. It is becoming increasingly popular among developers because it allows them to write automated API tests in a more structured and easier-to-read format. If you’re new to Karate or considering using it, you may have some questions. In this blog post, we’ll answer some of the most frequently asked questions about the Karate framework.

1. What is Karate framework?

Karate is an open-source set of tools for developing API test automation tools. It allows the user to write tests in a simple and intuitive language for REST, SOAP, GraphQL, and other web services. Karate is built on top of Cucumber, and it uses a domain-specific language to help the testing team create complex scenarios for the API. Its most significant advantages include its readability and simpler integration with CI/CD pipelines.

2. Why should I use Karate for testing?

Karate offers some compelling advantages to those who use it. For instance, it allows developers to automate API tests quickly and efficiently. Some of its key features include:

– Support for REST, SOAP, and GraphQL services
– Easy-to-use, readable syntax
– Built-in data-driven testing capabilities
– Support for JSON and XML payloads
– Out-of-the-box integrations with many CI/CD tools
– Parallel test execution, which can reduce the time required for test runs

3. What are the main benefits of using Karate?

There are several benefits to using Karate to automate your API tests. These include:
– Simplicity: One of the most significant advantages of using Karate is its simplicity. Karate’s syntax structure makes it easy to create clear and readable API tests, even those who are not familiar with the framework.
– Time-saving: Karate’s features significantly reduce overhead and repetitive tasks in creating and managing API tests.
– Cross-functional usability: With Karate, tests can be reused for cross-functional purposes, such as performance testing.
– Easy-to-use: Karate is intuitive and user-friendly. Therefore, anyone can use it, regardless of their technical competency, to create automated API tests.

4. Is Karate framework easy to learn?

Yes. Karate has an easy-to-learn syntax that is readable and intuitive. It is similar to Gherkin syntax, which most testers are familiar with. Karate has an extensive documentation part, making it easy for new users to understand it better. Once you get familiar with the syntax, you can write powerful tests with reduced efforts.

5. Is Karate framework scalable, and how can it be integrated with CI/CD?

Definitely. Karate tests can be run on the cloud, and its parallel execution capabilities offer a rapid execution of the tests. Integration with CI/CD tools is also easy due to its built-in support for reporting and output formats.

6. Can Karate framework be used for performance testing?

Yes, Karate has in-built support for Gatling, which is widely used for performance testing. It’s capable of simulating real-world traffic to your API, allowing integration with CI/CD tools to create an end-to-end performance testing framework.

7. How does Karate handle data-driven testing?

Karate has a built-in support for reusing the scenario with data from different JSON or CSV files. Karate makes the data-driven testing process more streamlined by allowing you to specify the data source file for re-executing the same test using multiple data sets.

8. Is Karate framework suitable for API testing for various domains?

Yes, Karate is a versatile framework that can be used for API testing of various domains such as banking, healthcare, retail, and more. Its ability to support REST, SOAP, and GraphQL, and its built-in capability for data-driven testing and reporting, make it adaptable for usage in various domains.

In conclusion

Karate is a powerful and flexible test automation framework designed explicitly for API testing. By choosing Karate, testers can benefit from its many features, including support for multiple domains, data-driven testing, and easy integration with CI/CD tools. Additionally, the framework’s simplicity in test coverage and resilience and user-friendly framework make it an excellent option for both experienced and new users. Overall, Karate is a framework that enables testers to create efficient, reliable, and easily readable API tests, making it a go-to option for API testing.

Step-by-Step Guide: How to Use the Karate Framework

Karate framework is a popular testing tool for web services. It offers a simple and intuitive approach for testing APIs. With Karate, you can write UI automation scripts, performance tests, and even tests for GraphQL APIs. In this article, we will look at the step-by-step guide on how to use the Karate framework.

Step 1: Setup the Project

To start using Karate, you need to set up an initial project. Open your terminal, navigate to the desired project directory, and type:

mvn archetype:generate -DgroupId=com.mycompany.app -DartifactId=my-app -DarchetypeArtifactId=maven-archetype-quickstart

This creates a new Maven project with the default settings. Now, you need to add the Karate dependency to your project. Open the pom.xml file and add the following dependency:


Step 2: Create a Feature File

Now that your Karate project is set up, create a new feature file. This is where you will write your Karate tests. Feature files use the Gherkin language and have a .feature extension. Gherkin is a simple and easy to read language that eliminates ambiguity.

The following is an example of a basic Karate feature file:

Feature: Karate Test Example

Scenario: Sample Scenario
Given url 'http://localhost:8080/api/v1/users'
When method GET
Then status 200
And match $.name == 'John Doe'

The above feature file verifies that you can perform a GET request on a specific URL and check the status code and name returned in the response.

Step 3: Run the Test

To run the test, open the terminal, navigate to the root directory of the project, and type:

mvn test

This command runs all the tests in your project.

Step 4: Debug with Visual Studio Code

Visual Studio Code is a popular editor among developers. It offers an easy way to debug your Karate tests.

Here’s how to configure Visual Studio Code for debugging:

1. Install the Karate Runner plugin in Visual Studio Code.
2. Open the terminal and navigate to the Karate project’s root directory.
3. Type `code .` and press enter.
4. In Visual Studio Code, open the feature file.
5. Add a breakpoint to the line you want to debug.
6. Press F5, and the debugger will start.

Step 5: Generate a HTML Report

Karate generates a detailed HTML report that displays test results and code coverage. To generate the report, open the terminal, navigate to the project directory, and type:

mvn surefire-report:report

This creates an HTML report in the Project’s target directory under the surefire-report-html folder.

Step 6: Integrate Karate with CI/CD Pipeline

Integrating Karate with your CI/CD pipeline helps ensure that your tests are always up to date. Karate is compatible with popular CI/CD services such as Jenkins and CircleCI. In this step, we will look at how to integrate Karate with Jenkins.

1. Open Jenkins, select a new item, and give it a name.
2. Select the type „Maven Project.“
3. Configure the Source code Management and Build trigger options.
4. Scroll down to the Build section and click on „Add build step.“
5. Select „Invoke top-level Maven targets.“
6. In the Goals field, add `clean test` (without quotes).
7. Click on the „Advanced“ button and enter the POM file path in the POM field.
8. Click on the „Add post-build action“ button, and select „Publish JUnit test result report.“
9. Set the Test Report XMLs to `**/target/surefire-reports/TEST-*.xml`.

These steps will help integrate your Karate tests with your Jenkins CI/CD pipeline.


Using Karate Framework for testing web services offers many benefits, such as automated API testing, easy debugging with a plugin in Visual Studio Code, and generating detailed HTML reports. This step-by-step guide will help you set up a Karate project, write feature files, and integrate Karate with CI/CD pipelines. With Karate, you can rest assured that your web service is free from bugs and is performing as expected.

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