diff --git a/tests/lib/service/CustomerServiceTest.php b/tests/lib/service/CustomerServiceTest.php
new file mode 100644
index 00000000..c85f2e20
--- /dev/null
+++ b/tests/lib/service/CustomerServiceTest.php
@@ -0,0 +1,41 @@
+<?php
+
+use Intaro\RetailCrm\Service\CustomerService;
+
+/**
+ * Class CustomerService
+ */
+class CustomerServiceTest extends BitrixTestCase
+{
+    private $customerService;
+
+    public function setUp(): void
+    {
+        parent::setUp();
+
+        COption::SetOptionString('intaro.retailcrm', 'api_version', 'v5');
+        CModule::IncludeModule('intaro.retailcrm');
+
+        $this->customerService = new CustomerService();
+    }
+
+    public function testCreateModel()
+    {
+        $user = new CUser;
+        $arUser = $user->Register(
+            'TestLogin',
+            'TestName',
+            'TestLastName',
+            'TestPassword',
+            'TestPassword',
+            'testemail@gmail.com'
+        );
+
+        $customer = $this->customerService->createModel($arUser['ID']);
+        $fields = CUser::GetByID($arUser['ID'])->Fetch();
+        $dateRegister = new DateTimeImmutable($fields['DATE_REGISTER']);
+
+        self::assertEquals($dateRegister->getTimestamp(), $customer->createdAt->getTimestamp());
+        CUser::Delete($arUser['ID']);
+    }
+}
\ No newline at end of file