fix: 여행 목록 조회 시 전체 페이지 수 오류 수정

src/main/java/com/retrip/trip/application/in/TripService.java

@@ -64,9 +64,11 @@ public TripUpdateVisibilityResponse updateTripVisibility(UUID tripId, TripUpdate
     @Transactional(readOnly = true)
     @Override
     public Page<TripResponse> getTrips(Pageable page) {
-        List<Trip> trips = tripQueryRepository.findTrips(page);
+        Page<Trip> tripsPage = tripQueryRepository.findTrips(page);
+        List<Trip> trips = tripsPage.getContent();
         List<TripHashTag> hashTags = tripQueryRepository.findHashTags(trips);
-        return new PageImpl<>(TripResponse.of(trips, hashTags), page, trips.size());
+
+        return new PageImpl<>(TripResponse.of(trips, hashTags), page, tripsPage.getTotalElements());
     }
 
     @Override

src/main/java/com/retrip/trip/application/out/repository/TripQueryRepository.java

@@ -2,20 +2,17 @@
 
 import com.retrip.trip.application.in.response.MyTripResponse;
 import com.retrip.trip.domain.entity.Trip;
-
 import com.retrip.trip.domain.entity.TripHashTag;
-
 import com.retrip.trip.domain.vo.TripStatus;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+
 import java.util.List;
 import java.util.Optional;
-
 import java.util.UUID;
 
-import org.springframework.data.domain.Page;
-import org.springframework.data.domain.Pageable;
-
 public interface TripQueryRepository {
-    List<Trip> findTrips(Pageable page);
+    Page<Trip> findTrips(Pageable page);
 
     Page<MyTripResponse> findMyTrips(UUID memberId, TripStatus tripStatus, Pageable page);
 

src/main/java/com/retrip/trip/infra/adapter/out/persistence/mysql/query/TripQuerydslRepository.java

@@ -3,17 +3,18 @@
 import com.querydsl.core.types.Projections;
 import com.querydsl.core.types.dsl.BooleanExpression;
 import com.querydsl.core.types.dsl.Expressions;
+import com.querydsl.jpa.impl.JPAQuery;
 import com.querydsl.jpa.impl.JPAQueryFactory;
 import com.retrip.trip.application.in.response.MyTripResponse;
 import com.retrip.trip.application.out.repository.TripQueryRepository;
-import com.retrip.trip.domain.entity.QTrip;
 import com.retrip.trip.domain.entity.QTripParticipant;
 import com.retrip.trip.domain.entity.Trip;
 import com.retrip.trip.domain.entity.TripHashTag;
 import com.retrip.trip.domain.vo.TripStatus;
 import lombok.RequiredArgsConstructor;
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.Pageable;
+import org.springframework.data.support.PageableExecutionUtils;
 import org.springframework.stereotype.Repository;
 
 import java.util.List;
@@ -33,13 +34,19 @@ public class TripQuerydslRepository implements TripQueryRepository {
     private final JPAQueryFactory query;
 
     @Override
-    public List<Trip> findTrips(Pageable page) {
-        return query
+    public Page<Trip> findTrips(Pageable page) {
+        List<Trip> content = query
                 .selectFrom(trip)
                 .offset(page.getOffset())
                 .limit(page.getPageSize())
                 .orderBy(trip.createdAt.desc())
                 .fetch();
+
+        JPAQuery<Long> countQuery = query
+                .select(trip.count())
+                .from(trip);
+
+        return PageableExecutionUtils.getPage(content, page, countQuery::fetchOne);
     }
 
     @Override

src/test/java/com/retrip/trip/application/in/TripServiceTest.java

@@ -81,7 +81,6 @@ private Trip createProgressTrip(UUID leaderId) {
 
     @Test
     void 여행_목록을_조회한다() {
-        // TripFixture 호출 시 status 파라미터 관련 문제 해결을 위해 createTestTrip 헬퍼 메서드 사용 (위에서 수정함)
         tripRepository.save(createTestTrip("속초 여행 맴버 구함", "속초 여행은 이렇게이렇게 갈겁니다~", TripCategory.DOMESTIC, TripStatus.RECRUITING));
         tripRepository.save(createTestTrip("대구 여행 멤버 구함", "대구 여행은 이렇게이렇게 갈겁니다~", TripCategory.DOMESTIC, TripStatus.RECRUITING));
         tripRepository.save(createTestTrip("부산 여행 멤버 구함", "부산 여행은 이렇게이렇게 갈겁니다~", TripCategory.DOMESTIC, TripStatus.RECRUITING));