How to Test DELETE API by Rest Assured

 

To test a DELETE API using Rest Assured in Java, you follow a standard procedure:

API used for DELETE operation:

DELETE https://reqres.in/api/users/2

This would delete user with ID 2.

Steps to Test DELETE API via Rest Assured:

• Set the Base URI
• Specify the Endpoint (example: /users/2)
• Use given() to prepare request
• Use .when().delete() to send the request
• Use .then() to validate the response (status code, etc.)

Expected Response from https://reqres.in/api/users/2:

The ReqRes API will respond with HTTP status code 204 No Content which indicates successful deletion, but no body is returned.

Maven Dependencies

<dependencies>
    <dependency>
        <groupId>io.rest-assured</groupId>
        <artifactId>rest-assured</artifactId>
        <version>5.4.0</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.json</groupId>
        <artifactId>json</artifactId>
        <version>20230227</version>
    </dependency>
</dependencies>

Java Code using Rest Assured:

import io.restassured.RestAssured;
import io.restassured.response.Response;

import static io.restassured.RestAssured.*;
import static org.hamcrest.Matchers.*;

public class DeleteUserTest {

    public static void main(String[] args) {

        // Step 1: Set Base URI
        RestAssured.baseURI = "https://reqres.in/api";

        // Step 2: Perform DELETE request and validate
        Response response = given()
                                .when()
                                .delete("/users/2") // Endpoint
                                .then()
                                .statusCode(204) // Assert expected status code
                                .extract().response();

        // Step 3: Print response for debugging (though it should be empty)
        System.out.println("Status Code: " + response.getStatusCode());
        System.out.println("Response Body: '" + response.getBody().asString() + "'");
    }
}

Just to Inform:




statusCode(204) ensures deletion is successful.

The response body should be empty (""), as per REST standard for DELETE.