랭킹(rating) 올림 처리로 수정한다. (#115)

fix: ceil rating

Author: char-yb

api/src/main/kotlin/com/gotchai/api/presentation/v1/user/response/UserRankingResponse.kt

@@ -4,7 +4,7 @@ import com.gotchai.domain.user.dto.result.GetUserRankingResult
 
 data class UserRankingResponse(
     val name: String,
-    val rating: Double
+    val rating: Int
 ) {
     companion object {
         fun from(result: GetUserRankingResult) =

domain/src/main/kotlin/com/gotchai/domain/user/adapter/in/UserQueryService.kt

@@ -7,6 +7,7 @@ import com.gotchai.domain.user.exception.ProfileNotFoundException
 import com.gotchai.domain.user.port.`in`.UserQueryUseCase
 import com.gotchai.domain.user.port.out.ProfileQueryPort
 import org.springframework.stereotype.Service
+import kotlin.math.ceil
 
 @Service
 class UserQueryService(
@@ -24,8 +25,8 @@ class UserQueryService(
     private fun calculateUserRating(
         userId: Long,
         allHistories: List<ExamHistory>
-    ): Double {
-        if (allHistories.isEmpty() || !allHistories.any { it.userId == userId }) return 100.0
+    ): Int {
+        if (allHistories.isEmpty() || !allHistories.any { it.userId == userId }) return 100
 
         val userScores =
             allHistories
@@ -36,10 +37,11 @@ class UserQueryService(
                     if (totalQuizzes == 0) 0.0 else totalCorrect.toDouble() / totalQuizzes.toDouble()
                 }
 
-        val userScore = userScores[userId] ?: return 100.0
-        if (userScores.size == 1) return 0.0
+        val userScore = userScores[userId] ?: return 100
+        if (userScores.size == 1) return 0
 
         val usersWithHigherScore = userScores.values.count { it > userScore }
-        return (usersWithHigherScore.toDouble() / userScores.size.toDouble()) * 100
+        val rating = (usersWithHigherScore.toDouble() / userScores.size.toDouble()) * 100
+        return ceil(rating).toInt()
     }
 }

domain/src/main/kotlin/com/gotchai/domain/user/dto/result/GetUserRankingResult.kt

@@ -4,12 +4,12 @@ import com.gotchai.domain.user.entity.Profile
 
 data class GetUserRankingResult(
     val name: String,
-    val rating: Double
+    val rating: Int
 ) {
     companion object {
         fun of(
             profile: Profile,
-            rating: Double
+            rating: Int
         ) = GetUserRankingResult(
             name = profile.nickname,
             rating = rating

domain/src/testFixtures/kotlin/com/gotchai/domain/fixture/UserFixture.kt

@@ -56,7 +56,7 @@ fun createUserSocial(
 
 fun createGetUserRankingResult(
     name: String = NICKNAME,
-    rating: Double = 25.0
+    rating: Int = 25
 ): GetUserRankingResult =
     GetUserRankingResult(
         name = name,