Response time is quick as also an assertion of status code. It uses inbuilt Hemcrest Matchers for easy extraction of values. The response is given in JSON or XML format and is easy to parse and validate. The setup of Rest Assured is easy and straightforward. Rest Assured requires less coding as compared to Apache HTTP Client. It is very rich in syntax and ready-made assertions. The following table lists some of the advantages of the library. ddf.thirdparty - This is a third-party library.- This is a legacy library and used for easy testing of REST services using Java DSL.io.rest-assured - This is a Java DSL for easy testing of REST services.Thus we can focus more on front-end testing.įollowing are some of the versions of the Rest Assured library we use generally in applications. Once we know the basics of API and integration testing, automation using Rest Assured gives good confidence on the backend. This library uses Java and therefore it becomes simple to send HTTPS requests with customizations using basic Java code.Using REST Assured, it becomes simpler and easier. Validation and testing of REST services are harder in Java.Earlier, we had to use dynamic languages like Ruby, Groovy for API testing and it was quite challenging.It is an open-source library and has an active development community making it a great choice for API automation.But why do we need it or what are the reasons to use it in our application testing?įollowing are the main reasons we need Rest Assured : The above discussion about this java library convinces us that it is a reliable library.

JSON path syntax: $Īpart from all the above features, this fantastic library also provides various other features like DSL-like syntax, Specification Reuse, XPath-Validation, easy file uploads, and all the features that are conducive to automated testing. For people new to such concepts, please refer to the following syntax examples. Yet another powerful feature of REST assured is its support for XML Path and JSON Path syntax to check specific elements of the response data similar to using XPath API. Further, it can be integrated well with Maven and its efficient matching techniques produce straightforward results. We can also integrate this library with JUnit and TestNG frameworks and write test cases for applications. We can also use it to verify and validate the response of the HTTP requests.Īpart from testing JSON-based web services, Rest Assured can also be used to test XML-based web services. It also includes specifications and validation like parameters, headers, cookies, etc. The library supports any HTTP method and also has explicit support for GET, POST, PUT, DELETE, OPTIONS and HEAD. It brings out the simplicity of dynamic languages like Groovy and Ruby that perform API testing in Java. Rest assured simplifies the testing of REST-based services. It was developed and maintained by Johan Haleby with the support of several other contributors. It is like a headless (no GUI) client that accesses and tests the REST Web Services. Rest-Assured is an open-source Java-based library useful for testing and validating REST APIs or RESTFul Web Services. We will cover the following topics related to REST Assured in this article:

The most popular technology we use for API testing is ' Rest Assured'. Moving one step ahead in this direction, let us go ahead with API testing using REST in this article. In our previous articles, we have discussed the basics of the REST approach including familiar terms, architectural elements, etc.