Allow spaces in usernames

Author: Kulv3r

genesis_core/tests/unit/user_api/iam/dm/test_types.py

@@ -46,16 +46,16 @@ def test_instance(self):
             ("أحمد_2023", True),
             ("", False),
             (" space ", False),
-            ("two words", False),
+            ("two words", True),  # " " space is allowed
             ("emoji😊", False),
-            ("percent%age", True),  # % разрешен!
-            ("invalid/", True),  # / разрешен!
+            ("percent%age", True),  # "%" is allowed
+            ("invalid/", True),  # "/" is allowed
             ("semicolon;test", False),
             ('quote"mark', False),
             ("bracket(test)", False),
             ("angle<tag", False),
             ("comma,separated", False),
-            ("dash-", True),  # Дефис в конце разрешен
+            ("dash-", True),  # trailing "-" dash is allowed
             ("a\nb", False),
         ],
     )

genesis_core/user_api/iam/dm/types.py

@@ -23,7 +23,7 @@ class Username(types.BaseCompiledRegExpType):
 
     def __init__(self, min_length=1, max_length=128):
         pattern = re.compile(
-            r"^[\w!#$%&\'*+/=?^_`{|}~.-]+$",
+            r"^(?!\s)[\w!#$%& \'*+/=?^_`{|}~.-]+(?!\s)$",
             flags=re.UNICODE,
         )
         super().__init__(pattern=pattern)