[Java] API 테스트를 위한 Rest Assured 준비와 예제


  • Java
  • IntelliJ

환경 설정

Spring Test 준비하기

Rest Assured Gradle 설정

plugins {
	id 'java'
	id 'org.springframework.boot' version '3.2.2'
	id 'io.spring.dependency-management' version '1.1.4'

group = 'me.twpower'
version = '0.0.1-SNAPSHOT'

java {
	sourceCompatibility = '21'

configurations {
	compileOnly {
		extendsFrom annotationProcessor

repositories {

dependencies {
	implementation 'org.springframework.boot:spring-boot-starter-data-jdbc'
	implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
	implementation 'org.springframework.boot:spring-boot-starter-jdbc'
	implementation 'org.springframework.boot:spring-boot-starter-security'
	implementation 'org.springframework.boot:spring-boot-starter-web'
	compileOnly 'org.projectlombok:lombok'
	runtimeOnly 'com.h2database:h2'
	annotationProcessor 'org.projectlombok:lombok'
	testImplementation 'org.springframework.boot:spring-boot-starter-test'
	testImplementation 'org.springframework.security:spring-security-test'
	testImplementation 'io.rest-assured:rest-assured:5.4.0' // 추가됨

tasks.named('test') {


  • given(): 요청하기 전에 필요한 헤더나 파라미터와 같은 부분을 세팅
  • when(): 실제로 요청하기위해 URI나 Method를 입력
  • then(): 검증하기 위한 부분
  • header, pathParam, queryParam, body, log 그리고 extract 메소드 사용 방법도 아래에 추가
package me.twpower.restassuredpractice;

import io.restassured.RestAssured;
import io.restassured.response.ExtractableResponse;
import io.restassured.response.Response;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;

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

public class RestAssuredPracticeTest {

    static void beforeAll(){
        // Setting BaseURI
        RestAssured.baseURI = "http://echo.jsontest.com/";

    void restAssuredPracticeTest() {
        // JSON Example
        // Request Method: GET
        // Call http://echo.jsontest.com/key1/value1/key2/value2/key3/3?queryParameterKey=queryParameterValue
            "key1": "value1",
            "key2": "value2",
            "key3": "3"

        // given(): Start building the request part of the test io.restassured.specification.
        // when(): Start building the DSL expression by sending a request without any parameters or headers etc.
        // then(): Returns a validatable response that's lets you validate the response.

        // given() and when() returns RequestSpecification object
        ExtractableResponse<Response> extractableResponse = given().log().all().
            header("Content-Type", "application/json"). // Specify the headers that'll be sent with the request.
            pathParam("pathParameter", 3). // Specify a path parameter.
            queryParam("queryParameterKey", "queryParameterValue"). // Specify a query parameter that'll be sent with the request.
            //body(). // Specify request body.
            body("key1", equalTo("value1")).

        Assertions.assertEquals(200, extractableResponse.statusCode());
        Assertions.assertEquals("value1", extractableResponse.jsonPath().getString("key1"));


  • 성공
  • 실패
java.lang.AssertionError: 1 expectation failed.
JSON path key1 doesn't match.
Expected: value2
  Actual: value1