🔗 Integration Test

Testing Strategies

• Verify status code

• Verify response body schema

• Verify response headers

• Verify response time

We will use the Restful Booker API for the following examples.

---

Rest-Assured (Java)

Rest-Assured is a Java DSL for simplifying testing of REST based services.

1. Dependency (pom.xml)

<dependency>
    <groupId>io.rest-assured</groupId>
    <artifactId>rest-assured</artifactId>
    <version>5.3.0</version>
    <scope>test</scope>
</dependency>

2. Example: Get Booking IDs

Scenario: Verify that we can retrieve booking IDs and the status code is 200.

import io.restassured.RestAssured;
import io.restassured.response.Response;
import org.testng.Assert;
import org.testng.annotations.Test;

import static io.restassured.RestAssured.given;

public class BookingTest {

    @Test
    public void getBookingIds() {
        // Base URI
        RestAssured.baseURI = "https://restful-booker.herokuapp.com";

        // Send GET request
        Response response = given()
                .when()
                .get("/booking")
                .then()
                .extract().response();

        // Verify Status Code
        Assert.assertEquals(response.getStatusCode(), 200, "Status code should be 200");

        // Verify Response is not empty
        Assert.assertTrue(response.jsonPath().getList("$").size() > 0, "Booking list should not be empty");
    }
}

3. Example: Create Booking (POST)

Scenario: Create a new booking and verify the response contains the booking ID.

import io.restassured.RestAssured;
import io.restassured.http.ContentType;
import org.testng.annotations.Test;
import static io.restassured.RestAssured.given;
import static org.hamcrest.Matchers.notNullValue;
import static org.hamcrest.Matchers.equalTo;

public class CreateBookingTest {

    @Test
    public void createBooking() {
        RestAssured.baseURI = "https://restful-booker.herokuapp.com";

        String requestBody = "{\n" +
                "    \"firstname\" : \"Jim\",\n" +
                "    \"lastname\" : \"Brown\",\n" +
                "    \"totalprice\" : 111,\n" +
                "    \"depositpaid\" : true,\n" +
                "    \"bookingdates\" : {\n" +
                "        \"checkin\" : \"2018-01-01\",\n" +
                "        \"checkout\" : \"2019-01-01\"\n" +
                "    },\n" +
                "    \"additionalneeds\" : \"Breakfast\"\n" +
                "}";

        given()
            .contentType(ContentType.JSON)
            .body(requestBody)
        .when()
            .post("/booking")
        .then()
            .statusCode(200)
            .body("bookingid", notNullValue())
            .body("booking.firstname", equalTo("Jim"))
            .body("booking.lastname", equalTo("Brown"));
    }
}

---

Axios (JavaScript/Node.js)

Axios is a promise-based HTTP client for the browser and Node.js.

1. Installation

npm install axios jest

2. Example: Get Booking IDs

Scenario: Verify status code 200 and array length.

// booking.test.js
const axios = require('axios');

const baseURL = 'https://restful-booker.herokuapp.com';

test('GET /booking - Should return 200 and a list of bookings', async () => {
    const response = await axios.get(`${baseURL}/booking`);
    
    expect(response.status).toBe(200);
    expect(Array.isArray(response.data)).toBe(true);
    expect(response.data.length).toBeGreaterThan(0);
});

3. Example: Create Booking (POST)

Scenario: Create a booking and verify the response.

// createBooking.test.js
const axios = require('axios');

const baseURL = 'https://restful-booker.herokuapp.com';

test('POST /booking - Should create a new booking', async () => {
    const bookingData = {
        firstname: "Jim",
        lastname: "Brown",
        totalprice: 111,
        depositpaid: true,
        bookingdates: {
            checkin: "2018-01-01",
            checkout: "2019-01-01"
        },
        additionalneeds: "Breakfast"
    };

    const response = await axios.post(`${baseURL}/booking`, bookingData, {
        headers: {
            'Content-Type': 'application/json',
            'Accept': 'application/json'
        }
    });

    expect(response.status).toBe(200);
    expect(response.data).toHaveProperty('bookingid');
    expect(response.data.booking.firstname).toBe('Jim');
    expect(response.data.booking.lastname).toBe('Brown');
});