feat: 좋아요 갯수 조회 API (사용자 Id, 상품 Id)

Author: Kimjipang

apps/commerce-api/src/main/java/com/loopers/domain/like/LikeRepository.java

@@ -10,4 +10,6 @@ public interface LikeRepository {
     void delete(Like like);
 
     int countByProductId(Long productId);
+
+    int countByUserIdAndProductId(Long userId, Long productId);
 }

apps/commerce-api/src/main/java/com/loopers/infrastructure/like/LikeJpaRepository.java

@@ -9,4 +9,6 @@ public interface LikeJpaRepository extends JpaRepository<Like, Long> {
     Optional<Like> findByUserIdAndProductId(Long userId, Long productId);
 
     int countByProductId(Long productId);
+
+    int countByUserIdAndProductId(Long userId, Long productId);
 }

apps/commerce-api/src/main/java/com/loopers/infrastructure/like/LikeRepositoryImpl.java

@@ -31,4 +31,9 @@ public void delete(Like like) {
     public int countByProductId(Long productId) {
         return likeJpaRepository.countByProductId(productId);
     }
+
+    @Override
+    public int countByUserIdAndProductId(Long userId, Long productId) {
+        return likeJpaRepository.countByUserIdAndProductId(userId, productId);
+    }
 }

apps/commerce-api/src/test/java/com/loopers/domain/user/UserServiceIntegrationTest.java

@@ -109,7 +109,7 @@ void returnsUserEntity_when_user_exists() {
         userService.save(userEntity);
 
         // act
-        UserEntity foundUser = userService.getUserByLoginId(loginId);
+        UserEntity foundUser = userService.findUserByLoginId(loginId);
 
         // assert
         assertThat(foundUser).isNotNull();
@@ -127,7 +127,7 @@ void returnsNull_when_user_not_exists() {
 
         // act
         final CoreException result = assertThrows(CoreException.class, () -> {
-            userService.getUserByLoginId(loginId);
+            userService.findUserByLoginId(loginId);
         });
 
         // assert