Using Headers and Cookies

Below is a sample Java program demonstrating how to test a GET request of a REST API using JUnit and Rest Assured, including headers and cookies:

import io.restassured.RestAssured;
import io.restassured.http.Cookie;
import io.restassured.http.Cookies;
import io.restassured.http.Header;
import io.restassured.http.Headers;
import io.restassured.response.Response;
import org.junit.jupiter.api.Test;

import static io.restassured.RestAssured.given;
import static org.junit.jupiter.api.Assertions.assertEquals;

public class ApiGetWithHeadersAndCookiesTest {

    @Test
    public void testGetRequestWithHeadersAndCookies() {
        // Base URI of the REST API
        RestAssured.baseURI = "https://api.example.com";

        // Headers
        Header header1 = new Header("HeaderName1", "HeaderValue1");
        Header header2 = new Header("HeaderName2", "HeaderValue2");
        Headers headers = new Headers(header1, header2);

        // Cookies
        Cookie cookie1 = new Cookie.Builder("CookieName1", "CookieValue1").build();
        Cookie cookie2 = new Cookie.Builder("CookieName2", "CookieValue2").build();
        Cookies cookies = new Cookies(cookie1, cookie2);

        // Send GET request with headers and cookies
        Response response = given()
                .headers(headers)
                .cookies(cookies)
                .get("/endpoint");

        // Get and assert the response status code
        int statusCode = response.getStatusCode();
        assertEquals(200, statusCode, "Expected status code 200");

        // Get and print the response body
        String responseBody = response.getBody().asString();
        System.out.println("Response Body:");
        System.out.println(responseBody);
    }
}

In this example:

• We import JUnit's @Test annotation and assertEquals method for assertions.
• We use the @Test annotation to mark the testGetRequestWithHeadersAndCookies method as a test case.
• We set the base URI of the REST API using RestAssured.baseURI.
• We define headers (HeaderName1, HeaderValue1, HeaderName2, HeaderValue2) using the Header class.
• We define cookies (CookieName1, CookieValue1, CookieName2, CookieValue2) using the Cookie class.
• We send a GET request to the /endpoint endpoint using given().headers(headers).cookies(cookies).get("/endpoint"), passing the headers and cookies using headers() and cookies() methods.
• We assert the response status code using JUnit's assertEquals method.
• We retrieve and print the response body.

Ensure that you have Rest Assured, JUnit, and its dependencies added to your project's classpath. You can run this test case using JUnit test runner. Additionally, you may need to handle exceptions such as IOException or NullPointerException depending on your specific requirements and error handling strategy. Adjust the base URI, endpoint, headers, and cookies according to your API's structure.