diff --git a/application-test/app-test/src/test/java/com/example/apptest/study/StudyServiceTest.java b/application-test/app-test/src/test/java/com/example/apptest/study/StudyServiceTest.java
index e5a8cc30..f93e7b30 100644
--- a/application-test/app-test/src/test/java/com/example/apptest/study/StudyServiceTest.java
+++ b/application-test/app-test/src/test/java/com/example/apptest/study/StudyServiceTest.java
@@ -1,19 +1,47 @@
 package com.example.apptest.study;
 
 import com.example.apptest.member.MemberService;
+import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.Mock;
 import org.mockito.Mockito;
+import org.mockito.junit.jupiter.MockitoExtension;
 
 import static org.junit.jupiter.api.Assertions.*;
 
+@ExtendWith(MockitoExtension.class)
 class StudyServiceTest {
 
     @Test
-    void createStudyService() {
+    @DisplayName("@Mock test")
+    void test_41(@Mock MemberService memberService,
+                 @Mock StudyRepository studyRepository) {
+        StudyService studyService = new StudyService(memberService, studyRepository);
+        assertNotNull(studyService);
+        System.out.println("테스트 완료!");
+    }
+
+//    @Mock MemberService memberService;
+//    @Mock StudyRepository studyRepository;
+//
+//    @Test
+//    @DisplayName("@Mock test")
+//    void test_40() {
+//        StudyService studyService = new StudyService(memberService, studyRepository);
+//        assertNotNull(studyService);
+//        System.out.println("테스트 완료!");
+//    }
+
+    @Test
+    @DisplayName("Mockito.mock() test")
+    void test_39() {
 
         MemberService memberService = Mockito.mock(MemberService.class);
         StudyRepository studyRepository = Mockito.mock(StudyRepository.class);
         StudyService studyService = new StudyService(memberService, studyRepository);
+        assertNotNull(studyService);
+        System.out.println("테스트 완료!");
     }
 
 }
\ No newline at end of file
diff --git a/application-test/app-test/src/test/resources/junit-platform.properties b/application-test/app-test/src/test/resources/junit-platform.properties
index daf73b61..b1e5dce9 100644
--- a/application-test/app-test/src/test/resources/junit-platform.properties
+++ b/application-test/app-test/src/test/resources/junit-platform.properties
@@ -1,6 +1,6 @@
 # Å×½ºÆ® À̸§ Ç¥±â Àü·« ¼³Á¤
-junit.jupiter.displayname.generator.default = \
-    org.junit.jupiter.api.DisplayNameGenerator$ReplaceUnderscores
+#junit.jupiter.displayname.generator.default = \
+#    org.junit.jupiter.api.DisplayNameGenerator$ReplaceUnderscores
 
 # Å×½ºÆ® ÀνºÅϽº ¶óÀÌÇÁ»çÀÌŬ ¼³Á¤
 #junit.jupiter.testinstance.lifecycle.default = per_class