diff --git a/src/test/kotlin/roomescape/reservation/ReservationApiTest.kt b/src/test/kotlin/roomescape/reservation/ReservationApiTest.kt
index 59b06fe9..ae156ecb 100644
--- a/src/test/kotlin/roomescape/reservation/ReservationApiTest.kt
+++ b/src/test/kotlin/roomescape/reservation/ReservationApiTest.kt
@@ -1,6 +1,7 @@
 package roomescape.reservation
 
 import io.kotest.matchers.shouldBe
+import io.kotest.matchers.shouldNotBe
 import org.hamcrest.CoreMatchers.equalTo
 import org.springframework.data.repository.findByIdOrNull
 import org.springframework.http.HttpMethod
@@ -9,7 +10,6 @@ import roomescape.auth.exception.AuthErrorCode
 import roomescape.common.config.next
 import roomescape.common.exception.CommonErrorCode
 import roomescape.common.util.DateUtils
-import roomescape.user.infrastructure.persistence.UserEntity
 import roomescape.payment.infrastructure.common.BankCode
 import roomescape.payment.infrastructure.common.CardIssuerCode
 import roomescape.payment.infrastructure.common.EasyPayCompanyCode
@@ -21,6 +21,7 @@ import roomescape.reservation.infrastructure.persistence.ReservationRepository
 import roomescape.reservation.infrastructure.persistence.ReservationStatus
 import roomescape.reservation.web.MostReservedThemeIdListResponse
 import roomescape.reservation.web.ReservationCancelRequest
+import roomescape.reservation.web.ReservationSummaryResponse
 import roomescape.schedule.infrastructure.persistence.ScheduleEntity
 import roomescape.schedule.infrastructure.persistence.ScheduleRepository
 import roomescape.schedule.infrastructure.persistence.ScheduleStatus
@@ -28,6 +29,7 @@ import roomescape.supports.*
 import roomescape.theme.infrastructure.persistence.ThemeEntity
 import roomescape.theme.infrastructure.persistence.ThemeRepository
 import roomescape.theme.web.toEntity
+import roomescape.user.infrastructure.persistence.UserEntity
 import java.time.LocalDate
 import java.time.LocalTime
 
@@ -55,7 +57,7 @@ class ReservationApiTest(
 
                 test("관리자") {
                     runExceptionTest(
-                        token = testAuthUtil.defaultHqAdminLogin(),
+                        token = testAuthUtil.defaultHqAdminLogin().second,
                         method = HttpMethod.POST,
                         endpoint = endpoint,
                         expectedErrorCode = AuthErrorCode.ACCESS_DENIED
@@ -66,13 +68,12 @@ class ReservationApiTest(
 
             test("정상 생성") {
                 val schedule: ScheduleEntity = dummyInitializer.createSchedule(
-                    adminToken = testAuthUtil.defaultHqAdminLogin(),
                     request = ScheduleFixture.createRequest,
                     status = ScheduleStatus.HOLD
                 )
 
                 runTest(
-                    token = testAuthUtil.defaultUserLogin(),
+                    token = testAuthUtil.defaultUserLogin().second,
                     using = {
                         body(commonRequest.copy(scheduleId = schedule.id))
                     },
@@ -84,8 +85,7 @@ class ReservationApiTest(
                     }
                 ).also {
                     val reservation: ReservationEntity =
-                        reservationRepository.findByIdOrNull(it.extract().path("data.id"))
-                            ?: throw AssertionError("Unexpected Exception Occurred.")
+                        reservationRepository.findByIdOrNull(it.extract().path("data.id"))!!
 
                     reservation.status shouldBe ReservationStatus.PENDING
                     reservation.scheduleId shouldBe schedule.id
@@ -94,14 +94,10 @@ class ReservationApiTest(
             }
 
             test("예약을 생성할 때 해당 일정이 ${ScheduleStatus.HOLD} 상태가 아니면 실패한다.") {
-                val schedule: ScheduleEntity = dummyInitializer.createSchedule(
-                    adminToken = testAuthUtil.defaultHqAdminLogin(),
-                    request = ScheduleFixture.createRequest,
-                    status = ScheduleStatus.AVAILABLE
-                )
+                val schedule: ScheduleEntity = dummyInitializer.createSchedule(status = ScheduleStatus.AVAILABLE)
 
                 runTest(
-                    token = testAuthUtil.defaultUserLogin(),
+                    token = testAuthUtil.defaultUserLogin().second,
                     using = {
                         body(commonRequest.copy(scheduleId = schedule.id))
                     },
@@ -116,22 +112,16 @@ class ReservationApiTest(
             }
 
             test("예약 인원이 테마의 최소 인원보다 작거나 최대 인원보다 많으면 실패한다.") {
-                val adminToken = testAuthUtil.defaultHqAdminLogin()
-                val theme: ThemeEntity = dummyInitializer.createTheme(
-                    adminToken = adminToken,
-                    request = ThemeFixture.createRequest
-                )
-
+                val theme: ThemeEntity = dummyInitializer.createTheme()
                 val schedule: ScheduleEntity = dummyInitializer.createSchedule(
-                    adminToken = adminToken,
                     request = ScheduleFixture.createRequest.copy(themeId = theme.id),
                     status = ScheduleStatus.HOLD
                 )
 
-                val userToken = testAuthUtil.defaultUserLogin()
+                val token = testAuthUtil.defaultUserLogin().second
 
                 runExceptionTest(
-                    token = userToken,
+                    token = token,
                     method = HttpMethod.POST,
                     endpoint = endpoint,
                     requestBody = commonRequest.copy(
@@ -142,7 +132,7 @@ class ReservationApiTest(
                 )
 
                 runExceptionTest(
-                    token = userToken,
+                    token = token,
                     method = HttpMethod.POST,
                     endpoint = endpoint,
                     requestBody = commonRequest.copy(
@@ -156,7 +146,7 @@ class ReservationApiTest(
             context("필수 입력값이 입력되지 않으면 실패한다.") {
                 test("예약자명") {
                     runExceptionTest(
-                        token = testAuthUtil.defaultUserLogin(),
+                        token = testAuthUtil.defaultUserLogin().second,
                         method = HttpMethod.POST,
                         endpoint = endpoint,
                         requestBody = commonRequest.copy(reserverName = ""),
@@ -166,7 +156,7 @@ class ReservationApiTest(
 
                 test("예약자 연락처") {
                     runExceptionTest(
-                        token = testAuthUtil.defaultUserLogin(),
+                        token = testAuthUtil.defaultUserLogin().second,
                         method = HttpMethod.POST,
                         endpoint = endpoint,
                         requestBody = commonRequest.copy(reserverContact = ""),
@@ -190,7 +180,7 @@ class ReservationApiTest(
 
                 test("관리자") {
                     runExceptionTest(
-                        token = testAuthUtil.defaultHqAdminLogin(),
+                        token = testAuthUtil.defaultHqAdminLogin().second,
                         method = HttpMethod.POST,
                         endpoint = endpoint,
                         expectedErrorCode = AuthErrorCode.ACCESS_DENIED
@@ -199,15 +189,11 @@ class ReservationApiTest(
             }
 
             test("정상 응답") {
-                val userToken = testAuthUtil.defaultUserLogin()
-
-                val reservation: ReservationEntity = dummyInitializer.createPendingReservation(
-                    adminToken = testAuthUtil.defaultHqAdminLogin(),
-                    reserverToken = userToken,
-                )
+                val (user, token) = testAuthUtil.defaultUserLogin()
+                val reservation: ReservationEntity = dummyInitializer.createPendingReservation(user = user)
 
                 runTest(
-                    token = userToken,
+                    token = token,
                     on = {
                         post("/reservations/${reservation.id}/confirm")
                     },
@@ -215,11 +201,8 @@ class ReservationApiTest(
                         statusCode(HttpStatus.OK.value())
                     }
                 ).also {
-                    val updatedReservation = reservationRepository.findByIdOrNull(reservation.id)
-                        ?: throw AssertionError("Unexpected Exception Occurred.")
-
-                    val updatedSchedule = scheduleRepository.findByIdOrNull(updatedReservation.scheduleId)
-                        ?: throw AssertionError("Unexpected Exception Occurred.")
+                    val updatedReservation = reservationRepository.findByIdOrNull(reservation.id)!!
+                    val updatedSchedule = scheduleRepository.findByIdOrNull(updatedReservation.scheduleId)!!
 
                     updatedSchedule.status shouldBe ScheduleStatus.RESERVED
                     updatedReservation.status shouldBe ReservationStatus.CONFIRMED
@@ -228,7 +211,7 @@ class ReservationApiTest(
 
             test("예약이 없으면 실패한다.") {
                 runExceptionTest(
-                    token = testAuthUtil.defaultUserLogin(),
+                    token = testAuthUtil.defaultUserLogin().second,
                     method = HttpMethod.POST,
                     endpoint = "/reservations/$INVALID_PK/confirm",
                     expectedErrorCode = ReservationErrorCode.RESERVATION_NOT_FOUND
@@ -250,7 +233,7 @@ class ReservationApiTest(
 
                 test("관리자") {
                     runExceptionTest(
-                        token = testAuthUtil.defaultHqAdminLogin(),
+                        token = testAuthUtil.defaultHqAdminLogin().second,
                         method = HttpMethod.POST,
                         endpoint = endpoint,
                         expectedErrorCode = AuthErrorCode.ACCESS_DENIED
@@ -259,15 +242,12 @@ class ReservationApiTest(
             }
 
             test("정상 응답") {
-                val userToken = testAuthUtil.defaultUserLogin()
+                val (user, token) = testAuthUtil.defaultUserLogin()
 
-                val reservation: ReservationEntity = dummyInitializer.createConfirmReservation(
-                    adminToken = testAuthUtil.defaultHqAdminLogin(),
-                    reserverToken = userToken,
-                )
+                val reservation: ReservationEntity = dummyInitializer.createConfirmReservation(user = user)
 
                 runTest(
-                    token = userToken,
+                    token = token,
                     using = {
                         body(ReservationCancelRequest(cancelReason = "test"))
                     },
@@ -278,10 +258,8 @@ class ReservationApiTest(
                         statusCode(HttpStatus.OK.value())
                     }
                 ).also {
-                    val updatedReservation = reservationRepository.findByIdOrNull(reservation.id)
-                        ?: throw AssertionError("Unexpected Exception Occurred.")
-                    val updatedSchedule = scheduleRepository.findByIdOrNull(updatedReservation.scheduleId)
-                        ?: throw AssertionError("Unexpected Exception Occurred.")
+                    val updatedReservation = reservationRepository.findByIdOrNull(reservation.id)!!
+                    val updatedSchedule = scheduleRepository.findByIdOrNull(updatedReservation.scheduleId)!!
 
                     updatedReservation.status shouldBe ReservationStatus.CANCELED
                     updatedSchedule.status shouldBe ScheduleStatus.AVAILABLE
@@ -291,7 +269,7 @@ class ReservationApiTest(
 
             test("예약이 없으면 실패한다.") {
                 runExceptionTest(
-                    token = testAuthUtil.defaultUserLogin(),
+                    token = testAuthUtil.defaultUserLogin().second,
                     method = HttpMethod.POST,
                     endpoint = "/reservations/$INVALID_PK/cancel",
                     requestBody = ReservationCancelRequest(cancelReason = "test"),
@@ -300,13 +278,13 @@ class ReservationApiTest(
             }
 
             test("다른 회원의 예약을 취소할 수 없다.") {
-                val reservation: ReservationEntity = dummyInitializer.createConfirmReservation(
-                    adminToken = testAuthUtil.defaultHqAdminLogin(),
-                    reserverToken = testAuthUtil.defaultUserLogin(),
-                )
+                val (user, token) = testAuthUtil.defaultUserLogin()
 
-                val otherUserToken =
+                val reservation: ReservationEntity = dummyInitializer.createConfirmReservation(user = user)
+
+                val (otherUser, otherUserToken) =
                     testAuthUtil.userLogin(UserFixture.createUser(email = "test@test.com", phone = "01011111111"))
+                        .also { it.first.email shouldNotBe user.email }
 
                 runExceptionTest(
                     token = otherUserToken,
@@ -332,7 +310,7 @@ class ReservationApiTest(
 
                 test("관리자") {
                     runExceptionTest(
-                        token = testAuthUtil.defaultHqAdminLogin(),
+                        token = testAuthUtil.defaultHqAdminLogin().second,
                         method = HttpMethod.POST,
                         endpoint = endpoint,
                         expectedErrorCode = AuthErrorCode.ACCESS_DENIED
@@ -341,32 +319,22 @@ class ReservationApiTest(
             }
 
             test("정상 응답") {
-                val userToken = testAuthUtil.defaultUserLogin()
-                val adminToken = testAuthUtil.defaultHqAdminLogin()
+                val (user, userToken) = testAuthUtil.defaultUserLogin()
 
-                for (i in 1..3) {
-                    dummyInitializer.createConfirmReservation(
-                        adminToken = adminToken,
-                        reserverToken = userToken,
-                        themeRequest = ThemeFixture.createRequest.copy(name = "theme-$i"),
-                        scheduleRequest = ScheduleFixture.createRequest.copy(
-                            date = LocalDate.now().plusDays(i.toLong()),
-                            time = LocalTime.now().plusHours(i.toLong())
+                initialize("테스트를 위한 3개의 ${ReservationStatus.CONFIRMED} 예약과 1개의 ${ReservationStatus.PENDING} 예약 생성") {
+                    (1..3).forEach { i ->
+                        dummyInitializer.createConfirmReservation(
+                            user = user,
+                            scheduleRequest = ScheduleFixture.createRequest.copy(
+                                date = LocalDate.now().plusDays(i.toLong()),
+                                time = LocalTime.now().plusHours(i.toLong())
+                            )
                         )
-                    )
+                    }.also {
+                        dummyInitializer.createPendingReservation(user = user)
+                    }
                 }
 
-                // PENDING 예약은 조회되지 않음.
-                dummyInitializer.createPendingReservation(
-                    adminToken = adminToken,
-                    reserverToken = userToken,
-                    themeRequest = ThemeFixture.createRequest.copy(name = "theme-$4"),
-                    scheduleRequest = ScheduleFixture.createRequest.copy(
-                        date = LocalDate.now().plusDays(1),
-                        time = LocalTime.now()
-                    )
-                )
-
                 runTest(
                     token = userToken,
                     on = {
@@ -380,7 +348,13 @@ class ReservationApiTest(
                             propsNameIfList = "reservations"
                         )
                     }
-                )
+                ).also { response ->
+                    ResponseParser.parseListResponse<ReservationSummaryResponse>(
+                        response.extract().path("data.reservations")
+                    ).forEach {
+                        it.status shouldBe ReservationStatus.CONFIRMED
+                    }
+                }
             }
         }
 
@@ -398,7 +372,7 @@ class ReservationApiTest(
 
                 test("관리자") {
                     runExceptionTest(
-                        token = testAuthUtil.defaultHqAdminLogin(),
+                        token = testAuthUtil.defaultHqAdminLogin().second,
                         method = HttpMethod.POST,
                         endpoint = endpoint,
                         expectedErrorCode = AuthErrorCode.ACCESS_DENIED
@@ -412,10 +386,8 @@ class ReservationApiTest(
                 lateinit var reservation: ReservationEntity
 
                 beforeTest {
-                    reservation = dummyInitializer.createConfirmReservation(
-                        adminToken = testAuthUtil.defaultHqAdminLogin(),
-                        reserverToken = testAuthUtil.defaultUserLogin(),
-                    )
+                    val user = testAuthUtil.defaultUserLogin().first
+                    reservation = dummyInitializer.createConfirmReservation(user = user)
                 }
 
                 test("카드 결제") {
@@ -547,7 +519,7 @@ class ReservationApiTest(
 
             test("예약이 없으면 실패한다.") {
                 runExceptionTest(
-                    token = testAuthUtil.defaultUserLogin(),
+                    token = testAuthUtil.defaultUserLogin().second,
                     method = HttpMethod.GET,
                     endpoint = "/reservations/$INVALID_PK/detail",
                     expectedErrorCode = ReservationErrorCode.RESERVATION_NOT_FOUND
@@ -555,13 +527,12 @@ class ReservationApiTest(
             }
 
             test("예약은 있지만, 결제 정보를 찾을 수 없으면 null로 지정한다.") {
-                val reservation = dummyInitializer.createConfirmReservation(
-                    adminToken = testAuthUtil.defaultHqAdminLogin(),
-                    reserverToken = testAuthUtil.defaultUserLogin(),
-                )
+                val (user, token) = testAuthUtil.defaultUserLogin()
+
+                val reservation = dummyInitializer.createConfirmReservation(user = user)
 
                 runTest(
-                    token = testAuthUtil.defaultUserLogin(),
+                    token = token,
                     on = {
                         get("/reservations/${reservation.id}/detail")
                     },
@@ -573,10 +544,8 @@ class ReservationApiTest(
             }
 
             test("예약과 결제는 있지만, 결제 세부 내역이 없으면 세부 내역만 null로 지정한다..") {
-                val reservation = dummyInitializer.createConfirmReservation(
-                    adminToken = testAuthUtil.defaultHqAdminLogin(),
-                    reserverToken = testAuthUtil.defaultUserLogin(),
-                )
+                val (user, token) = testAuthUtil.defaultUserLogin()
+                val reservation = dummyInitializer.createConfirmReservation(user = user)
 
                 dummyInitializer.createPayment(
                     reservationId = reservation.id,
@@ -586,7 +555,7 @@ class ReservationApiTest(
                 }
 
                 runTest(
-                    token = testAuthUtil.defaultUserLogin(),
+                    token = token,
                     on = {
                         get("/reservations/${reservation.id}/detail")
                     },
@@ -621,7 +590,7 @@ class ReservationApiTest(
         reservation: ReservationEntity
     ): LinkedHashMap<String, Any> {
         return runTest(
-            token = testAuthUtil.defaultUserLogin(),
+            token = testAuthUtil.defaultUserLogin().second,
             on = {
                 get("/reservations/${reservation.id}/detail")
             },
@@ -639,87 +608,71 @@ class ReservationApiTest(
         val user: UserEntity = testAuthUtil.defaultUser()
 
         val themeIds: List<Long> = (1..5).map {
-            themeRepository.save(
-                ThemeFixture.createRequest.copy(name = "theme-$it").toEntity(id = tsidFactory.next())
-            ).id
+            themeRepository.save(ThemeFixture.createRequest.copy().toEntity(id = tsidFactory.next())).id
         }
 
+        val store = dummyInitializer.createStore()
+
         // 첫 번째 테마: 유효한 2개 예약
         (1L..2L).forEach {
-            createScheduleAndReservation(
-                date = DateUtils.getSundayOfPreviousWeek(LocalDate.now()).plusDays(it),
-                themeId = themeIds[0],
-                userId = user.id,
+            dummyInitializer.createConfirmReservation(
+                user = user,
+                storeId = store.id,
+                scheduleRequest = ScheduleFixture.createRequest.copy(
+                    date = DateUtils.getSundayOfPreviousWeek(LocalDate.now()).plusDays(it),
+                    themeId = themeIds[0],
+                )
             )
         }
 
         // 두 번째 테마: 유효한 1개 예약
-        createScheduleAndReservation(
-            date = DateUtils.getSundayOfPreviousWeek(LocalDate.now()),
-            themeId = themeIds[1],
-            userId = user.id,
+        dummyInitializer.createConfirmReservation(
+            user = user,
+            storeId = store.id,
+            scheduleRequest = ScheduleFixture.createRequest.copy(
+                date = DateUtils.getSundayOfPreviousWeek(LocalDate.now()),
+                themeId = themeIds[1],
+            )
         )
 
         // 세 번째 테마: 유효한 3개 예약
         (1L..3L).forEach {
-            createScheduleAndReservation(
-                date = DateUtils.getSundayOfPreviousWeek(LocalDate.now()).plusDays(it),
-                themeId = themeIds[2],
-                userId = user.id,
+            dummyInitializer.createConfirmReservation(
+                user = user,
+                storeId = store.id,
+                scheduleRequest = ScheduleFixture.createRequest.copy(
+                    date = DateUtils.getSundayOfPreviousWeek(LocalDate.now()).plusDays(it),
+                    themeId = themeIds[2],
+                )
             )
         }
 
         // 네 번째 테마: Pending 상태인 3개 예약 -> 집계되지 않음.
         (1L..3L).forEach {
-            createScheduleAndReservation(
-                date = DateUtils.getSundayOfPreviousWeek(LocalDate.now()).plusDays(it),
-                themeId = themeIds[3],
-                userId = user.id,
-                isPending = true
+            dummyInitializer.createPendingReservation(
+                user = user,
+                storeId = store.id,
+                scheduleRequest = ScheduleFixture.createRequest.copy(
+                    date = DateUtils.getSundayOfPreviousWeek(LocalDate.now()).plusDays(it),
+                    themeId = themeIds[3],
+                )
             )
         }
 
         // 다섯 번째 테마: 이번주의 확정 예약 -> 집계되지 않음.
         (1L..3L).forEach { i ->
             val thisMonday = DateUtils.getSundayOfPreviousWeek(LocalDate.now()).plusDays(8)
-            createScheduleAndReservation(
-                date = thisMonday.plusDays(i),
-                themeId = themeIds[4],
-                userId = user.id,
+            dummyInitializer.createConfirmReservation(
+                user = user,
+                storeId = store.id,
+                scheduleRequest = ScheduleFixture.createRequest.copy(
+                    date = thisMonday.plusDays(i),
+                    themeId = themeIds[4],
+                )
             )
         }
 
         // 조회 예상 결과: 세번째, 첫번째, 두번째 테마 순서
         return MostReservedThemeIdListResponse(listOf(themeIds[2], themeIds[0], themeIds[1]))
     }
-
-    private fun createScheduleAndReservation(
-        date: LocalDate,
-        themeId: Long,
-        userId: Long,
-        isPending: Boolean = false
-    ) {
-        val schedule = ScheduleEntity(
-            id = tsidFactory.next(),
-            date = date,
-            time = LocalTime.now(),
-            themeId = themeId,
-            status = if (isPending) ScheduleStatus.HOLD else ScheduleStatus.RESERVED
-        ).also {
-            scheduleRepository.save(it)
-        }
-
-        ReservationEntity(
-            id = tsidFactory.next(),
-            userId = userId,
-            scheduleId = schedule.id,
-            reserverName = "이상돌",
-            reserverContact = "01012345678",
-            participantCount = 4,
-            requirement = "잘부탁드려요!",
-            status = if (isPending) ReservationStatus.PENDING else ReservationStatus.CONFIRMED,
-        ).also {
-            reservationRepository.save(it)
-        }
-    }
 }