diff --git a/src/test/kotlin/roomescape/supports/Fixtures.kt b/src/test/kotlin/roomescape/supports/Fixtures.kt
index d793a0bd..ef936341 100644
--- a/src/test/kotlin/roomescape/supports/Fixtures.kt
+++ b/src/test/kotlin/roomescape/supports/Fixtures.kt
@@ -25,17 +25,11 @@ import java.time.OffsetDateTime
 const val INVALID_PK: Long = 9999L
 val tsidFactory = TsidFactory(0)
 
-fun randomPhoneNumber(): String {
-    val prefix = "010"
-    val middle = (1000..9999).random()
-    val last = (1000..9999).random()
-    return "$prefix$middle$last"
-}
 
 object StoreFixture {
     fun create(
         id: Long = tsidFactory.next(),
-        name: String = "테스트행복점",
+        name: String = "테스트-${randomString()}점",
         address: String = "서울특별시 강북구 행복길 123",
         businessRegNum: String = "123-45-67890",
         regionCode: String = "1111000000"
@@ -49,24 +43,21 @@ object StoreFixture {
 }
 
 object AdminFixture {
-    val default: AdminEntity = create()
-    val storeDefault: AdminEntity = create(
-        account = "admin-store",
-        phone = randomPhoneNumber(),
-        type = AdminType.STORE,
-        storeId = tsidFactory.next()
+    val default: AdminEntity = create(
+        account = "default"
     )
 
-    val hqDefault: AdminEntity = create(
-        account = "admin-hq",
-        phone = randomPhoneNumber(),
-        type = AdminType.HQ,
-        storeId = null
+    val storeDefault: AdminEntity = createStoreAdmin(
+        account = "store-default",
+    )
+
+    val hqDefault: AdminEntity = createHqAdmin(
+        account = "hq-default",
     )
 
     fun createStoreAdmin(
         id: Long = tsidFactory.next(),
-        account: String = "admin",
+        account: String = randomString(),
         password: String = "adminPassword",
         name: String = "admin12345",
         phone: String = randomPhoneNumber(),
@@ -87,7 +78,7 @@ object AdminFixture {
 
     fun createHqAdmin(
         id: Long = tsidFactory.next(),
-        account: String = "admin",
+        account: String = randomString(),
         password: String = "adminPassword",
         name: String = "admin12345",
         phone: String = randomPhoneNumber(),
@@ -107,9 +98,9 @@ object AdminFixture {
 
     fun create(
         id: Long = tsidFactory.next(),
-        account: String = "admin",
+        account: String = randomString(),
         password: String = "adminPassword",
-        name: String = "admin12345",
+        name: String = "admin",
         phone: String = randomPhoneNumber(),
         type: AdminType = AdminType.STORE,
         storeId: Long? = tsidFactory.next(),
@@ -127,14 +118,17 @@ object AdminFixture {
 }
 
 object UserFixture {
-    val default: UserEntity = createUser()
+    val default: UserEntity = createUser(
+        name = "default",
+        email = "default-user@test.com"
+    )
 
     fun createUser(
         id: Long = tsidFactory.next(),
-        name: String = "sample",
-        email: String = "sample@example.com",
+        name: String = randomString(),
+        email: String = randomEmail(),
         password: String = "a".repeat(MIN_PASSWORD_LENGTH),
-        phone: String = "01012345678",
+        phone: String = randomPhoneNumber(),
         regionCode: String = "1111000000",
         status: UserStatus = UserStatus.ACTIVE
     ): UserEntity = UserEntity(
@@ -148,17 +142,17 @@ object UserFixture {
     )
 
     val createRequest: UserCreateRequest = UserCreateRequest(
-        name = "sample",
-        email = "sample@example.com",
+        name = randomString(),
+        email = randomEmail(),
         password = "a".repeat(MIN_PASSWORD_LENGTH),
-        phone = "01012345678",
+        phone = randomPhoneNumber(),
         regionCode = "1111000000"
     )
 }
 
 object ThemeFixture {
     val createRequest: ThemeCreateRequest = ThemeCreateRequest(
-        name = "Matilda Green",
+        name = randomString(),
         description = "constituto",
         thumbnailUrl = "https://duckduckgo.com/?q=mediocrem",
         difficulty = Difficulty.VERY_EASY,
diff --git a/src/test/kotlin/roomescape/supports/TestUtil.kt b/src/test/kotlin/roomescape/supports/TestUtil.kt
new file mode 100644
index 00000000..076be785
--- /dev/null
+++ b/src/test/kotlin/roomescape/supports/TestUtil.kt
@@ -0,0 +1,30 @@
+package roomescape.supports
+
+import kotlin.random.Random
+
+inline fun <T> initialize(name: String, block: () -> T): T {
+    return block()
+}
+
+fun randomPhoneNumber(): String {
+    val prefix = "010"
+    val middle = (1000..9999).random()
+    val last = (1000..9999).random()
+    return "$prefix$middle$last"
+}
+
+fun randomString(): String {
+    val chars = ('a'..'z') + ('0'..'9')
+    return (1..10)
+        .map { chars.random() }
+        .joinToString("")
+}
+
+fun randomEmail(): String = "${randomString()}@test.com"
+
+fun randomBusinessRegNum(): String {
+    val part1 = Random.nextInt(100, 1000)
+    val part2 = Random.nextInt(10, 100)
+    val part3 = Random.nextInt(10000, 100000)
+    return "$part1-$part2-$part3"
+}