refactor: Report 내의 userId에 NOT NULL 제약 적용

Author: JoonKyoLee

src/main/java/com/example/emotion_storage/report/domain/Report.java

@@ -24,7 +24,7 @@ public class Report extends BaseTimeEntity {
     private Long id;
 
     @ManyToOne(fetch = FetchType.LAZY)
-    @JoinColumn(name = "user_id")
+    @JoinColumn(name = "user_id", nullable = false)
     private User user;
 
     @Column(nullable = false)

src/main/resources/db/migration/V4__reports_user_id_not_null.sql

@@ -0,0 +1,2 @@
+ALTER TABLE reports
+    MODIFY COLUMN user_id BIGINT NOT NULL;

src/test/java/com/example/emotion_storage/timecapsule/repository/TimeCapsuleRepositoryTest.java

@@ -54,6 +54,7 @@ void setup() {
                 .build());
 
         report = reportRepository.save(Report.builder()
+                .user(user)
                 .historyDate(LocalDate.now())
                 .todaySummary("요약")
                 .stressIndex(30)

src/test/java/com/example/emotion_storage/timecapsule/service/TimeCapsuleServiceTest.java

@@ -75,6 +75,7 @@ void setup() {
 
         // 2. 리포트 생성
         Report report = Report.builder()
+                .user(user)
                 .historyDate(LocalDate.now(clock))
                 .todaySummary("오늘 하루 요약")
                 .stressIndex(3)