chg: Used .local TLD and added the test test_create_user_not_allowed_login.

tests/test_web.py

@@ -260,6 +260,18 @@ class TestPublic(unittest.TestCase):
         self.assertTrue(len(comments["data"]) == 0)
 
     # Test User
+    def test_create_user_not_allowed_login(self) -> None:
+        if self.public_test:
+            # Do not run that test against the public instance, it would create users.
+            return None
+        instance_config = self.client.get_config_info()
+        if not instance_config.get('registration'):
+            return None
+        for login in ["login", "user", "username", "help", "test", "about", "administration", "account"]:
+            user = self.client.create_user(name='test Name', login=login,
+                                        organisation='test Organization', email='test@testorg.local')
+            self.assertEqual(user['message'], 'Username not allowed.')
+
     def test_users_info(self) -> None:
         if not self.admin_token:
             # this test is only working if the admin token is set
@@ -299,7 +311,7 @@ class TestPublic(unittest.TestCase):
             return None
 
         user = self.client.create_user(name='test Name', login='alan',
-                                       organisation='test Organization', email='test@testorg.lu')
+                                       organisation='test Organization', email='test@testorg.local')
         self.assertTrue(user)
         self.assertTrue('id' in user, user)
         uid = user['id']