test(ranking): 점수 계산 로직 및 단위 테스트 수정

- 점수 계산 방식 변경에 따른 테스트 값 업데이트
- 기존 테스트에서 사용된 점수 값 수정

Author: hyujikoh

apps/commerce-batch/src/main/java/com/loopers/batch/job/ranking/support/ScoreCalculator.java

@@ -37,7 +37,7 @@ public long calculate(long viewCount, long likeCount, long salesCount, long orde
 
         // 3. 최종 점수 계산 (소수점 처리를 위해 적절한 스케일 곱산 후 long 변환)
         // Redis ZSET의 score가 double임을 감안하여 정밀도를 유지합니다.
-        return (long) ((viewScore + likeScore + normalizedSalesScore) * 1000);
+        return (long) ((viewScore + likeScore + normalizedSalesScore) * 10);
     }
 
     /**

apps/commerce-batch/src/test/java/com/loopers/batch/job/ranking/dto/RankingAggregationUnitTest.java

@@ -32,7 +32,7 @@ void should_create_from_valid_aggregation_result() {
             Assertions.assertThat(aggregation.getSalesCount()).isEqualTo(10L);
             Assertions.assertThat(aggregation.getOrderCount()).isEqualTo(5L);
             // score = 100*1 + 50*3 + 10*5 + 5*2 = 310
-            Assertions.assertThat(aggregation.getTotalScore()).isEqualTo(310L);
+            Assertions.assertThat(aggregation.getTotalScore()).isEqualTo(214L);
             Assertions.assertThat(aggregation.getRankPosition()).isEqualTo(0); // 초기값
         }
 
@@ -166,7 +166,7 @@ void should_return_correct_string_format() {
 
             // then
             Assertions.assertThat(result).contains("productId=1");
-            Assertions.assertThat(result).contains("score=310");
+            Assertions.assertThat(result).contains("score=214");
             Assertions.assertThat(result).contains("rank=1");
         }
     }

apps/commerce-batch/src/test/java/com/loopers/batch/job/ranking/support/RankingAggregatorUnitTest.java

@@ -25,9 +25,9 @@ class 랭킹_처리 {
         void should_sort_by_score_and_assign_ranks() {
             // given
             List<Object[]> results = List.of(
-                    new Object[]{1L, 100L, 10L, 5L, 2L},  // score = 100 + 30 + 25 + 4 = 159
-                    new Object[]{2L, 200L, 20L, 10L, 4L}, // score = 200 + 60 + 50 + 8 = 318
-                    new Object[]{3L, 50L, 5L, 2L, 1L}     // score = 50 + 15 + 10 + 2 = 77
+                    new Object[]{1L, 100L, 10L, 5L, 2L},
+                    new Object[]{2L, 200L, 20L, 10L, 4L},
+                    new Object[]{3L, 50L, 5L, 2L, 1L}
             );
 
             // when
@@ -39,15 +39,15 @@ void should_sort_by_score_and_assign_ranks() {
             // 점수 기준 내림차순 정렬 확인
             Assertions.assertThat(rankings.get(0).getProductId()).isEqualTo(2L); // 1위
             Assertions.assertThat(rankings.get(0).getRankPosition()).isEqualTo(1);
-            Assertions.assertThat(rankings.get(0).getTotalScore()).isEqualTo(318L);
+            Assertions.assertThat(rankings.get(0).getTotalScore()).isEqualTo(254L);
 
             Assertions.assertThat(rankings.get(1).getProductId()).isEqualTo(1L); // 2위
             Assertions.assertThat(rankings.get(1).getRankPosition()).isEqualTo(2);
-            Assertions.assertThat(rankings.get(1).getTotalScore()).isEqualTo(159L);
+            Assertions.assertThat(rankings.get(1).getTotalScore()).isEqualTo(130L);
 
             Assertions.assertThat(rankings.get(2).getProductId()).isEqualTo(3L); // 3위
             Assertions.assertThat(rankings.get(2).getRankPosition()).isEqualTo(3);
-            Assertions.assertThat(rankings.get(2).getTotalScore()).isEqualTo(77L);
+            Assertions.assertThat(rankings.get(2).getTotalScore()).isEqualTo(66L);
         }
 
         @Test

apps/commerce-batch/src/test/java/com/loopers/batch/job/ranking/support/ScoreCalculatorUnitTest.java

@@ -24,8 +24,7 @@ void should_calculate_score_with_correct_weights() {
             long score = calculator.calculate(viewCount, likeCount, salesCount, orderCount);
 
             // then
-            // score = 100*1 + 50*3 + 10*5 + 5*2 = 100 + 150 + 50 + 10 = 310
-            Assertions.assertThat(score).isEqualTo(310L);
+            Assertions.assertThat(score).isEqualTo(214L);
         }
 
         @Test
@@ -50,18 +49,6 @@ void should_have_highest_weight_for_sales_count() {
             // when & then
             Assertions.assertThat(singleSale).isGreaterThan(singleView);
             Assertions.assertThat(singleSale).isGreaterThan(singleLike);
-            Assertions.assertThat(singleSale).isGreaterThan(singleOrder);
-        }
-
-        @Test
-        @DisplayName("좋아요가 조회수보다 높은 가중치를 가진다")
-        void should_have_higher_weight_for_like_than_view() {
-            // given
-            long singleLike = calculator.calculate(0, 1, 0, 0);
-            long singleView = calculator.calculate(1, 0, 0, 0);
-
-            // when & then
-            Assertions.assertThat(singleLike).isGreaterThan(singleView);
         }
 
         @Test
@@ -77,7 +64,7 @@ void should_calculate_correctly_with_large_numbers() {
             long score = calculator.calculate(viewCount, likeCount, salesCount, orderCount);
 
             // then
-            long expected = 1_000_000L * 1 + 500_000L * 3 + 100_000L * 5 + 50_000L * 2;
+            long expected = (long) (((1_000_000L * 0.1) + (500_000L * 0.2) + Math.log1p(100_000L) *0.6 ) * 10);
             Assertions.assertThat(score).isEqualTo(expected);
         }
     }
@@ -93,10 +80,9 @@ void should_return_weight_info_in_correct_format() {
             String weightInfo = calculator.getWeightInfo();
 
             // then
-            Assertions.assertThat(weightInfo).contains("VIEW=1");
-            Assertions.assertThat(weightInfo).contains("LIKE=3");
-            Assertions.assertThat(weightInfo).contains("SALES=5");
-            Assertions.assertThat(weightInfo).contains("ORDER=2");
+            Assertions.assertThat(weightInfo).contains("VIEW=0.1");
+            Assertions.assertThat(weightInfo).contains("LIKE=0.2");
+            Assertions.assertThat(weightInfo).contains("SALES=0.6");
         }
     }
-}
+}