diff --git a/Graduating-Server/build.gradle.kts b/Graduating-Server/build.gradle.kts
index 51ab2a1..7a86234 100644
--- a/Graduating-Server/build.gradle.kts
+++ b/Graduating-Server/build.gradle.kts
@@ -54,8 +54,12 @@ dependencies {
     // DB
     runtimeOnly("com.mysql:mysql-connector-j")
 
+    // Test
     testImplementation("org.springframework.boot:spring-boot-starter-test")
+    testImplementation("org.springframework.security:spring-security-test")
     testImplementation("org.jetbrains.kotlin:kotlin-test-junit5")
+    testImplementation("com.h2database:h2:2.1.214")
+    
     testRuntimeOnly("org.junit.platform:junit-platform-launcher")
 }
 
diff --git a/Graduating-Server/src/main/kotlin/com/bestswlkh0310/graduating/graduatingserver/api/auth/AuthService.kt b/Graduating-Server/src/main/kotlin/com/bestswlkh0310/graduating/graduatingserver/api/auth/AuthService.kt
index fe69fb7..05648b7 100644
--- a/Graduating-Server/src/main/kotlin/com/bestswlkh0310/graduating/graduatingserver/api/auth/AuthService.kt
+++ b/Graduating-Server/src/main/kotlin/com/bestswlkh0310/graduating/graduatingserver/api/auth/AuthService.kt
@@ -24,29 +24,29 @@ class AuthService(
     private val googleOAuth2Client: GoogleOAuth2Client,
     private val appleOAuth2Client: AppleOAuth2Client,
     private val appleOAuth2Helper: AppleOAuth2Helper,
-    private val jwtUtils: JwtClient,
+    private val jwtClient: JwtClient,
     private val googleOAuth2Helper: GoogleOAuth2Helper
 ) {
 
     fun refresh(req: RefreshReq): TokenRes {
-        jwtUtils.parseToken(req.refreshToken)
+        jwtClient.parseToken(req.refreshToken)
 
         val user = run {
-            val username = jwtUtils.payload(JwtPayloadKey.USERNAME, req.refreshToken)
+            val username = jwtClient.payload(JwtPayloadKey.USERNAME, req.refreshToken)
             userRepository.getByUsername(username)
         }
 
-        return jwtUtils.generate(user)
+        return jwtClient.generate(user)
     }
 
     fun oAuth2SignIn(req: OAuth2SignInReq): TokenRes {
-        val token = when (req.platformType) {
+        val user = when (req.platformType) {
             PlatformType.GOOGLE -> googleSignIn(req)
             PlatformType.APPLE -> appleSignIn(req)
             else -> throw CustomException(HttpStatus.BAD_REQUEST, "Invalid platform type")
         }
         
-        return jwtUtils.generate(token)
+        return jwtClient.generate(user)
     }
 
     private fun googleSignIn(req: OAuth2SignInReq): User {
diff --git a/Graduating-Server/src/main/kotlin/com/bestswlkh0310/graduating/graduatingserver/core/graduating/GraduatingEntity.kt b/Graduating-Server/src/main/kotlin/com/bestswlkh0310/graduating/graduatingserver/core/graduating/GraduatingEntity.kt
index da7c330..7dee4be 100644
--- a/Graduating-Server/src/main/kotlin/com/bestswlkh0310/graduating/graduatingserver/core/graduating/GraduatingEntity.kt
+++ b/Graduating-Server/src/main/kotlin/com/bestswlkh0310/graduating/graduatingserver/core/graduating/GraduatingEntity.kt
@@ -3,7 +3,7 @@ package com.bestswlkh0310.graduating.graduatingserver.core.graduating
 import jakarta.persistence.*
 
 @Entity
-@Table(name = "graduating")
+@Table(name = "tbl_graduating")
 class GraduatingEntity(
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
diff --git a/Graduating-Server/src/main/kotlin/com/bestswlkh0310/graduating/graduatingserver/core/meal/MealEntity.kt b/Graduating-Server/src/main/kotlin/com/bestswlkh0310/graduating/graduatingserver/core/meal/MealEntity.kt
index 42dfbf2..3f28a63 100644
--- a/Graduating-Server/src/main/kotlin/com/bestswlkh0310/graduating/graduatingserver/core/meal/MealEntity.kt
+++ b/Graduating-Server/src/main/kotlin/com/bestswlkh0310/graduating/graduatingserver/core/meal/MealEntity.kt
@@ -6,7 +6,7 @@ import java.time.LocalDate
 
 @Entity
 @Table(
-    name = "meal",
+    name = "tbl_meal",
     uniqueConstraints = [
         UniqueConstraint(
             name = "UniqueMealDateAndMealTypeAndSchoolId",
diff --git a/Graduating-Server/src/main/kotlin/com/bestswlkh0310/graduating/graduatingserver/core/school/SchoolEntity.kt b/Graduating-Server/src/main/kotlin/com/bestswlkh0310/graduating/graduatingserver/core/school/SchoolEntity.kt
index 9b8bc8a..df27648 100644
--- a/Graduating-Server/src/main/kotlin/com/bestswlkh0310/graduating/graduatingserver/core/school/SchoolEntity.kt
+++ b/Graduating-Server/src/main/kotlin/com/bestswlkh0310/graduating/graduatingserver/core/school/SchoolEntity.kt
@@ -4,7 +4,7 @@ import jakarta.persistence.*
 import java.time.LocalDate
 
 @Entity
-@Table(name = "school")
+@Table(name = "tbl_school")
 class SchoolEntity(
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
diff --git a/Graduating-Server/src/main/kotlin/com/bestswlkh0310/graduating/graduatingserver/core/user/User.kt b/Graduating-Server/src/main/kotlin/com/bestswlkh0310/graduating/graduatingserver/core/user/User.kt
index 7dc20ea..b8671c3 100644
--- a/Graduating-Server/src/main/kotlin/com/bestswlkh0310/graduating/graduatingserver/core/user/User.kt
+++ b/Graduating-Server/src/main/kotlin/com/bestswlkh0310/graduating/graduatingserver/core/user/User.kt
@@ -2,7 +2,7 @@ package com.bestswlkh0310.graduating.graduatingserver.core.user
 
 import jakarta.persistence.*
 
-@Entity(name = "`user`")
+@Entity(name = "tbl_user")
 class User(
     id: Long = 0,
     username: String,
diff --git a/Graduating-Server/src/main/resources/application.yml b/Graduating-Server/src/main/resources/application.yml
index 76c9220..62845b2 100644
--- a/Graduating-Server/src/main/resources/application.yml
+++ b/Graduating-Server/src/main/resources/application.yml
@@ -19,7 +19,7 @@ neis:
   apikey: ${NEIS_APIKEY}
 jwt:
   expired:
-    access: 3600_000
+    access: 3_600_000
     refresh: 300_000_000
   secret-key: ${JWT_SECRET}
 oauth2:
diff --git a/Graduating-Server/src/test/kotlin/com/bestswlkh0310/graduating/graduatingserver/AuthControllerTest.kt b/Graduating-Server/src/test/kotlin/com/bestswlkh0310/graduating/graduatingserver/AuthControllerTest.kt
new file mode 100644
index 0000000..9e27a8a
--- /dev/null
+++ b/Graduating-Server/src/test/kotlin/com/bestswlkh0310/graduating/graduatingserver/AuthControllerTest.kt
@@ -0,0 +1,46 @@
+package com.bestswlkh0310.graduating.graduatingserver
+
+import com.bestswlkh0310.graduating.graduatingserver.api.auth.res.TokenRes
+import com.bestswlkh0310.graduating.graduatingserver.core.user.PlatformType
+import com.bestswlkh0310.graduating.graduatingserver.core.user.User
+import com.bestswlkh0310.graduating.graduatingserver.core.user.UserRepository
+import com.bestswlkh0310.graduating.graduatingserver.infra.token.JwtClient
+import com.bestswlkh0310.graduating.graduatingserver.util.TestAnnotation
+import org.junit.jupiter.api.BeforeEach
+import org.junit.jupiter.api.Test
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.test.web.servlet.MockMvc
+
+@TestAnnotation
+class AuthControllerTest {
+
+    @Autowired
+    lateinit var userRepository: UserRepository
+    @Autowired
+    lateinit var jwtClient: JwtClient
+    @Autowired
+    lateinit var mvc: MockMvc
+
+    private var token: TokenRes? = null
+
+    @BeforeEach
+    fun beforeEach() {
+        val user = userRepository.save(
+            User(
+                id = 0,
+                username = "hhhello0507@gmail.com",
+                nickname = "testuser",
+                platformType = PlatformType.GOOGLE
+            )
+        )
+        token = jwtClient.generate(user)
+    }
+
+    @Test
+    fun `sign up`() {
+//        mvc.perform(
+//            MockMvcRequestBuilders.post("/api/auth/signup")
+//        )
+        println(token)
+    }
+}
diff --git a/Graduating-Server/src/test/kotlin/com/bestswlkh0310/graduating/graduatingserver/GraduatingServerApplicationTests.kt b/Graduating-Server/src/test/kotlin/com/bestswlkh0310/graduating/graduatingserver/GraduatingServerApplicationTests.kt
deleted file mode 100644
index e8bcbf1..0000000
--- a/Graduating-Server/src/test/kotlin/com/bestswlkh0310/graduating/graduatingserver/GraduatingServerApplicationTests.kt
+++ /dev/null
@@ -1,13 +0,0 @@
-package com.bestswlkh0310.graduating.graduatingserver
-
-import org.junit.jupiter.api.Test
-import org.springframework.boot.test.context.SpringBootTest
-
-@SpringBootTest
-class GraduatingServerApplicationTests {
-
-    @Test
-    fun contextLoads() {
-    }
-
-}
diff --git a/Graduating-Server/src/test/kotlin/com/bestswlkh0310/graduating/graduatingserver/util/TestAnnotation.kt b/Graduating-Server/src/test/kotlin/com/bestswlkh0310/graduating/graduatingserver/util/TestAnnotation.kt
new file mode 100644
index 0000000..dcb42e6
--- /dev/null
+++ b/Graduating-Server/src/test/kotlin/com/bestswlkh0310/graduating/graduatingserver/util/TestAnnotation.kt
@@ -0,0 +1,20 @@
+package com.bestswlkh0310.graduating.graduatingserver.util
+
+import org.springframework.boot.jdbc.EmbeddedDatabaseConnection
+import org.springframework.boot.test.autoconfigure.jdbc.AutoConfigureTestDatabase
+import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc
+import org.springframework.boot.test.context.SpringBootTest
+import org.springframework.test.annotation.DirtiesContext
+import org.springframework.test.context.TestPropertySource
+
+@Target(AnnotationTarget.CLASS)
+@Retention(AnnotationRetention.RUNTIME)
+@SpringBootTest
+@DirtiesContext(classMode = DirtiesContext.ClassMode.BEFORE_EACH_TEST_METHOD) // reset DB
+@AutoConfigureTestDatabase(
+    connection = EmbeddedDatabaseConnection.H2,
+    replace = AutoConfigureTestDatabase.Replace.ANY
+)
+@TestPropertySource("classpath:application-test.yml")
+@AutoConfigureMockMvc
+annotation class TestAnnotation
\ No newline at end of file
diff --git a/Graduating-Server/src/test/kotlin/com/bestswlkh0310/graduating/graduatingserver/util/toJson.kt b/Graduating-Server/src/test/kotlin/com/bestswlkh0310/graduating/graduatingserver/util/toJson.kt
new file mode 100644
index 0000000..d08fa8a
--- /dev/null
+++ b/Graduating-Server/src/test/kotlin/com/bestswlkh0310/graduating/graduatingserver/util/toJson.kt
@@ -0,0 +1,16 @@
+package com.bestswlkh0310.graduating.graduatingserver.util
+
+import com.fasterxml.jackson.module.kotlin.jacksonObjectMapper
+import com.fasterxml.jackson.module.kotlin.readValue
+
+fun Any.toJson(): String = try {
+    jacksonObjectMapper().writeValueAsString(this)
+} catch (e: Exception) {
+    throw RuntimeException(e)
+}
+
+inline fun <reified T> String.fromJson(): T = try {
+    jacksonObjectMapper().readValue<T>(this)
+} catch (e: Exception) {
+    throw RuntimeException(e)
+}
\ No newline at end of file
diff --git a/Graduating-Server/src/test/resources/application-test.yml b/Graduating-Server/src/test/resources/application-test.yml
new file mode 100644
index 0000000..a2311cb
--- /dev/null
+++ b/Graduating-Server/src/test/resources/application-test.yml
@@ -0,0 +1,15 @@
+spring:
+  datasource:
+    url: jdbc:h2:mem:testdb
+    #    username: 
+    #    password: 
+    driver-class-name: org.h2.Driver
+  h2:
+    console:
+      enabled: true
+  jpa:
+    database-platform: org.hibernate.dialect.H2Dialect
+    hibernate:
+      ddl-auto:
+        update
+    show-sql: true
\ No newline at end of file