test: AuthController @WebMvcTest 추가

[unam98]

작업 배경

• 컨트롤러 @WebMvcTest 스윕의 마지막 배치. AuthController의 로그인/회원가입 분기 로직과 토큰 재발급의 라우팅/@validated 검증/예외→HTTP 상태코드 매핑을 검증한다.
• 이로써 서비스 레이어(11개 서비스) + 컨트롤러 레이어(8개 컨트롤러) 전 계층 테스트가 갖춰졌다.

변경 사항

영역	내용
auth/controller/AuthControllerTest.java (신규)	로그인/토큰재발급 2개 엔드포인트 (8 테스트)

영향 범위

• 테스트 전용 변경, 프로덕션 코드 변경 없음.
• signIn이 서비스 응답 타입(SignInResponseDto vs SignUpResponseDto)에 따라 LOGIN/SIGNUP 성공 메시지를 분기하는 컨트롤러 자체 로직을 실제로 검증한다.
• AuthController는 클래스에 @Validated가 있어(다른 컨트롤러들과 달리) @RequestHeader의 @NotBlank가 실제로 동작함을 확인했다.

검증 매트릭스

영향 범위	테스트 코드
POST /api/auth 기존 유저 로그인 분기	• 기존_유저_로그인
POST /api/auth 신규 유저 회원가입 분기	• 신규_유저_회원가입
POST /api/auth token 없으면 400	• 토큰_없음
POST /api/auth provider 없으면 400	• 프로바이더_없음
GET /api/auth/getNewToken 정상 재발급	• 정상_재발급
GET /api/auth/getNewToken refreshToken 헤더 없으면 400	• 리프레시토큰_헤더_없음
GET /api/auth/getNewToken refreshToken 빈 문자열이면 400	• 리프레시토큰_빈문자열
GET /api/auth/getNewToken 토큰 불일치면 401	• 리프레시토큰_불일치

Test Plan

• AuthControllerTest 8/8 통과
• 로컬 postgres/redis 기동 후 ./gradlew test 전체 251/251 통과

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• src/test/java/org/runnect/server/auth/controller/AuthControllerTest.java

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