Spring boot #RestController test code error - spring-boot

Question

I created a test code for #RestController on the spring boot and this error occurs.
java.lang.IllegalStateException: Failed to load ApplicationContext
at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:132)
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Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'memberController' defined in file [C:\dev\react\Kculter\target\classes\com\prac\react\controller\MemberController.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.prac.react.service.MemberService' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {}
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Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.prac.react.service.MemberService' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {}
I see this problem even though I added #Service annotations to the MemberService class and #RestController annotations to the MemberController class.
How can I solve it?
I'll show my Test code, MemberCotroller, MemberService code below
MemberControllerTest.java
package com.prac.react.controller;
import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
import static org.springframework.test.web.servlet.result.MockMvcResultHandlers.print;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.autoconfigure.web.servlet.WebMvcTest;
import org.springframework.http.MediaType;
import org.springframework.test.web.servlet.MockMvc;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.prac.react.model.dto.Member;
import com.prac.react.service.MemberServiceTest;
#WebMvcTest(MemberController.class)
public class MemberControllerTest {
#Autowired
MockMvc mvc; // 가상의 http request를 테스트 할때 만들기 위해서 사용하는 인스턴스
#Autowired
ObjectMapper obm;
Logger logger = LoggerFactory.getLogger(MemberServiceTest.class);
#Test
#DisplayName("로그인 테스트 1 ") // 회원이 존재할때를 가장했을때를 위한 테스트 코드
void testSignInMember() throws Exception {
// given
Member mb = new Member(1, "hankgood95#gmail.com", "이욱재", true);
String requestBody = obm.writeValueAsString(mb);
mvc.perform(post("/member")
.content(requestBody)
.contentType(MediaType.APPLICATION_JSON))
.andExpect(status().isOk()) //status가 200이고
.andExpect(content().string(".com")) //content안에 .com이 있다면
.andDo(print()); //요청받은것들으 print 해라
}
}
MemberController.java
package com.prac.react.controller;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;
import com.prac.react.model.dto.Member;
import com.prac.react.service.MemberService;
/* 이파일은 회원가입,로그인,회원정보수정 등등
회원 정보와 관련된 일을 할때 들어올 Controller 입니다 */
#RestController
public class MemberController {
//로그를 찍어보기 위해서 만든 인스턴스
Logger logger = LoggerFactory.getLogger(MemberController.class);
//MemberService 의존성 주입을 위해 사용할 인스턴스
MemberService ms;
public MemberController(MemberService ms){
this.ms = ms; //의존성 주입
}
#PostMapping("member")
public Member SignInMember(#RequestBody Member member){
if(ms.checkMember(member.getEmail()) > 0){ //이미 우리 회원일때 접근
//이미 우리 회원이라면 여기서 얻은 Member 정보를 가지고 메인페이지로 이동을 해야한다.
member.setCheckMember(true);
return member;
}else{//처음 가입할때 접근
//우리 회원이 아니라면 이제 회원가입 페이지로 이동을 해야한다.
member.setCheckMember(false);
return member;
}
}
}
MemberService.java
package com.prac.react.service;
import org.springframework.stereotype.Service;
import com.prac.react.model.dao.MemberDao;
#Service
public class MemberService {
MemberDao md;
//MemberDao 인스턴스의 의존성 주입을 위해 생성자 안에서 집어 넣어주었습니다.
//여기서 주의해야할점은 의존성 주입이 하나 이상일땐 #Autowired 어노테이션을 꼭 넣어줘야만 합니다.
public MemberService(MemberDao md){
this.md = md;
}
public int checkMember(String email){
return md.checkMember(email);
}
}

Answer 1

When you using the test slice #WebMvcTest:
Regular #Component and #ConfigurationProperties beans are not scanned when the #WebMvcTest annotation is used.
This means your class annotated with #Service is also not configured.
You can use #MockBean to create a mock for this service.
Reference with Example: Spring Boot Reference