RestAssured - API Testing Tool
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RestAssured

8.2
Very Good

Free Plan

update Last updated: Mar 5, 2026
language

description RestAssured Overview

REST Assured is the de facto standard Java domain-specific language (DSL) for testing RESTful APIs. It simplifies testing of REST-based services by allowing you to write tests in a given-when-then style that is both expressive and integrates perfectly with standard Java testing frameworks like JUnit and TestNG. It abstracts away the low-level code of HTTP clients, enabling you to focus on the behavior of your API. With its fluent interface, you can easily specify request details (headers, params, body) and make powerful assertions on the response.

It's ideal for Java development teams who want a code-based, library-style approach to API testing that lives directly within their project's codebase, enabling tight integration with build tools and fostering practices like testing as code.

recommend Best for: Ideal for experienced Java developers working on RESTful API projects who require a powerful and flexible testing tool.

info RestAssured Specifications

balance RestAssured Pros & Cons

thumb_up Pros
  • check Supports Given-When-Then style testing
  • check Integrates with JUnit and other Java frameworks
  • check Comprehensive documentation and community support
  • check Extensive feature set for API testing
thumb_down Cons
  • close Steep learning curve for beginners
  • close Limited mobile platform support
  • close Commercial plugins may be required for advanced features
  • close Not suitable for non-Java environments

help RestAssured FAQ

What is the difference between RestAssured and other testing tools?

RestAssured uses a Given-When-Then style that makes tests more readable, integrates seamlessly with Java frameworks, and offers extensive features for API testing.

Is RestAssured free to use?

Yes, it is open-source and available under the Apache 2.0 license, but some commercial plugins may require a subscription.

Can RestAssured be used with non-Java projects?

RestAssured is primarily designed for Java projects, so integration with non-Java environments might require additional tools or workarounds.

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