diff --git a/rest-app/smartpicasso/app/user/tests.py b/rest-app/smartpicasso/app/user/tests.py
index a33d137..cc52c1c 100644
--- a/rest-app/smartpicasso/app/user/tests.py
+++ b/rest-app/smartpicasso/app/user/tests.py
@@ -4,6 +4,8 @@ from rest_framework import status
 from rest_framework.test import APITestCase, APIClient
 
 from smartpicasso.app.user.models import User
+from smartpicasso.app.user.serializers import UserLoginSerializer
+from rest_framework import serializers
 
 
 class UserApiTest(APITestCase):
@@ -29,3 +31,18 @@ class UserTest(TestCase):
         email = 'test@test.com'
         user = User.objects.create_user(email=email, password='test')
         self.assertEqual(str(user), email)
+
+
+class UserLoginSerializerTest(TestCase):
+    serializer = UserLoginSerializer()
+
+    def test_validate_wrong_credentials(self):
+        data = {'email': 'test@test.com', 'password': '123'}
+        self.assertRaises(serializers.ValidationError, self.serializer.validate, data)
+
+    def test_validate_success(self):
+        User.objects.create_user(email='test@test.com', password='test')
+        data = {'email': 'test@test.com', 'password': 'test'}
+        result = self.serializer.validate(data)
+        self.assertEqual(result['email'], 'test@test.com')
+        self.assertIn('token', result)