Rest Assured Explain

 

"RestAssured" is not an API itself but rather a Java-based library that simplifies the testing of RESTful APIs. It is commonly used for writing automated tests for RESTful web services. RestAssured provides a domain-specific language (DSL) for writing API tests in a concise and expressive manner.

Key features of RestAssured include:

1. Ease of Use: RestAssured offers a straightforward syntax that allows developers and testers to create API requests and validate responses with minimal code.

2. Request Specification: It allows users to define request specifications, including parameters, headers, and authentication details.

3. Response Validation: RestAssured provides powerful methods for validating API responses, making it easy to check status codes, response bodies, headers, and more.

4. Support for Different HTTP Methods: It supports various HTTP methods such as GET, POST, PUT, DELETE, etc., allowing users to simulate different types of requests.

5. Path Parameters and Query Parameters: RestAssured supports the inclusion of path parameters and query parameters in API requests.

6. JSON and XML Support: It seamlessly handles JSON and XML content, making it convenient for testing APIs that produce or consume these data formats.

7. Authentication: RestAssured supports various authentication mechanisms, including basic authentication, OAuth, and more.

8. Request and Response Logging: It provides options for logging detailed information about the API requests and responses, aiding in troubleshooting.

9. Integration with Testing Frameworks: RestAssured can be integrated with popular testing frameworks like JUnit and TestNG, allowing API tests to be seamlessly integrated into existing test suites.

Here is a simple example of using RestAssured to test a RESTful API endpoint:

import io.restassured.RestAssured; import io.restassured.response.Response; import org.testng.annotations.Test; import static io.restassured.RestAssured.given; import static org.testng.Assert.assertEquals; public class APITest { @Test public void testAPI() { // Define base URI RestAssured.baseURI = "https://jsonplaceholder.typicode.com"; // Make a GET request to /posts/1 Response response = given().get("/posts/1"); // Validate status code assertEquals(response.getStatusCode(), 200); // Validate response body String title = response.jsonPath().getString("title"); assertEquals(title, "sunt aut facere repellat provident occaecati excepturi optio reprehenderit"); } }

In this example, RestAssured is used to send a GET request to the "/posts/1" endpoint of the JSONPlaceholder API, and then the response is validated. The library provides a concise and expressive syntax for making API requests and asserting on the responses.