Added test to check email length in to_alias field

drfpasswordless/models.py

@@ -60,3 +60,8 @@ class CallbackToken(AbstractBaseCallbackToken):
 
     class Meta(AbstractBaseCallbackToken.Meta):
         verbose_name = 'Callback Token'
+
+    def save(self, force_insert=False, force_update=False, using=None,
+             update_fields=None):
+        self.full_clean()
+        super().save(force_insert, force_update, using, update_fields)

tests/test_authentication.py

@@ -1,10 +1,11 @@
+from django.core.exceptions import ValidationError
 from rest_framework import status
 from rest_framework.authtoken.models import Token
 from rest_framework.test import APITestCase
 
 from django.contrib.auth import get_user_model
 from drfpasswordless.settings import api_settings, DEFAULTS
-from drfpasswordless.utils import CallbackToken
+from drfpasswordless.utils import CallbackToken, create_callback_token_for_user
 
 User = get_user_model()
 
@@ -24,6 +25,12 @@ def test_email_signup_failed(self):
         response = self.client.post(self.url, data)
         self.assertEqual(response.status_code, status.HTTP_400_BAD_REQUEST)
 
+    def test_email_callback_token_create(self):
+        email = '1234567890' * 23 + '@example.com'
+        user = User.objects.create(email=email)
+        with self.assertRaises(ValidationError):
+            create_callback_token_for_user(user, "EMAIL")
+
     def test_email_signup_success(self):
         email = 'aaron@example.com'
         data = {'email': email}