make the tests pass

Author: adorton-adobe

umapi_client/functional.py

@@ -167,8 +167,8 @@ def update(self, email=None, username=None, first_name=None, last_name=None, cou
         """
         if username and self.id_type != IdentityTypes.federatedID:
             raise ArgumentError("You cannot set username except for a federated ID")
-        if username and not email:
-            raise ArgumentError("Cannot update username when email is not specified")
+        if username and '@' in username and not email:
+            raise ArgumentError("Cannot update email-type username when email is not specified")
         if email and username and email.lower() == username.lower():
             raise ArgumentError("Specify just email to set both email and username for a federated ID")
         updates = {}