[FIX] HOME API 연습 날짜 조회 타입 변환 오류 수정

src/main/java/com/mr/domain/home/service/HomeService.java

@@ -24,13 +24,14 @@
 import com.mr.domain.user.repository.UserRepository;
 import com.mr.global.apipayload.exception.GeneralException;
 import com.mr.global.util.RelativeDateFormatter;
+import java.sql.Date;
 import java.time.DayOfWeek;
 import java.time.LocalDate;
 import java.time.LocalDateTime;
 import java.util.ArrayList;
-import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
+import java.util.stream.Collectors;
 import lombok.RequiredArgsConstructor;
 import org.springframework.data.domain.PageRequest;
 import org.springframework.data.domain.Slice;
@@ -85,8 +86,9 @@ private List<RecommendedLearning> buildRecommendedLearnings(
 
     // 연속 출석일수는 기간 상한이 없어야 하므로 별도로 전체 기간 날짜만 조회
     private Set<LocalDate> fetchPracticeDates(Long userId) {
-        return new HashSet<>(
-                playingRepository.findDistinctEndedDatesByUserAndStatus(userId, PlayingStatus.COMPLETED));
+        return playingRepository.findDistinctEndedDatesByUserAndStatus(userId, PlayingStatus.COMPLETED).stream()
+                .map(Date::toLocalDate)
+                .collect(Collectors.toSet());
     }
 
     private UserSummary buildUserSummary(User user) {

src/main/java/com/mr/domain/playing/repository/PlayingRepository.java

@@ -3,7 +3,7 @@
 import com.mr.domain.playing.entity.Playing;
 import com.mr.domain.playing.entity.enums.PlayingStatus;
 import jakarta.persistence.LockModeType;
-import java.time.LocalDate;
+import java.sql.Date;
 import java.time.LocalDateTime;
 import java.util.List;
 import java.util.Optional;
@@ -85,7 +85,7 @@ select distinct function('date', p.endedAt) from Playing p
               and p.deletedAt is null
               and p.endedAt is not null
             """)
-    List<LocalDate> findDistinctEndedDatesByUserAndStatus(
+    List<Date> findDistinctEndedDatesByUserAndStatus(
             @Param("userId") Long userId,
             @Param("status") PlayingStatus status
     );

src/test/java/com/mr/domain/home/service/HomeServiceTest.java

@@ -28,6 +28,7 @@
 import com.mr.domain.user.repository.StudentRepository;
 import com.mr.domain.user.repository.UserRepository;
 import com.mr.global.apipayload.exception.GeneralException;
+import java.sql.Date;
 import java.time.DayOfWeek;
 import java.time.LocalDate;
 import java.time.LocalDateTime;
@@ -90,6 +91,10 @@ private Playing mockPlaying(LocalDateTime endedAt, Integer durationSec) {
         return playing;
     }
 
+    private Date sqlDate(LocalDate date) {
+        return Date.valueOf(date);
+    }
+
     @Test
     @DisplayName("getHome - 존재하지 않는 사용자면 404")
     void getHome_userNotFound_throws404() {
@@ -140,7 +145,7 @@ void getHome_threeConsecutiveDaysIncludingToday_currentDaysIsThree() {
 
         LocalDate today = LocalDate.now();
         given(playingRepository.findDistinctEndedDatesByUserAndStatus(1L, PlayingStatus.COMPLETED)).willReturn(List.of(
-                today, today.minusDays(1), today.minusDays(2), today.minusDays(5) // 연속 끊김
+                sqlDate(today), sqlDate(today.minusDays(1)), sqlDate(today.minusDays(2)), sqlDate(today.minusDays(5))
         ));
 
         HomeResponseDTO response = homeService.getHome(1L);
@@ -154,8 +159,9 @@ void getHome_longStreak_notCappedByLookbackWindow() {
         stubBaseline(1L);
 
         LocalDate today = LocalDate.now();
-        List<LocalDate> endedDates = java.util.stream.IntStream.range(0, 65)
+        List<Date> endedDates = java.util.stream.IntStream.range(0, 65)
                 .mapToObj(today::minusDays)
+                .map(this::sqlDate)
                 .toList();
         given(playingRepository.findDistinctEndedDatesByUserAndStatus(1L, PlayingStatus.COMPLETED)).willReturn(endedDates);
 
@@ -171,7 +177,7 @@ void getHome_noPracticeToday_countsFromYesterday() {
 
         LocalDate yesterday = LocalDate.now().minusDays(1);
         given(playingRepository.findDistinctEndedDatesByUserAndStatus(1L, PlayingStatus.COMPLETED))
-                .willReturn(List.of(yesterday));
+                .willReturn(List.of(sqlDate(yesterday)));
 
         HomeResponseDTO response = homeService.getHome(1L);
 
@@ -185,7 +191,7 @@ void getHome_duplicateDateFromRepository_countsOnce() {
 
         LocalDate today = LocalDate.now();
         given(playingRepository.findDistinctEndedDatesByUserAndStatus(1L, PlayingStatus.COMPLETED))
-                .willReturn(List.of(today, today, today));
+                .willReturn(List.of(sqlDate(today), sqlDate(today), sqlDate(today)));
 
         HomeResponseDTO response = homeService.getHome(1L);