refactor: NPE 방지 코드 추가

GDSC-Hongik · Oct 10, 2024 · bcf85b2 · bcf85b2
1 parent c40b53f
commit bcf85b2
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/main/java/com/gdschongik/gdsc/domain/study/domain/StudyHistoryValidator.java b/src/main/java/com/gdschongik/gdsc/domain/study/domain/StudyHistoryValidator.java
@@ -53,6 +53,10 @@ public void validateUpdateRepository(
     }
 
     public void validateAppliedToStudy(Long countStudyHistory, int studentCount) {
+        if (countStudyHistory == null) {
+            throw new CustomException(STUDY_HISTORY_NOT_FOUND);
+        }
+
         if (countStudyHistory != studentCount) {
             throw new CustomException(STUDY_HISTORY_NOT_APPLIED_STUDENT_EXISTS);
         }