Fix failing test because unicity constraint handling changed in recent cw versions

views.py

@@ -151,6 +151,12 @@ class RegistrationConfirmController(controller.Controller):
                                  surname=data.get(qname('surname')))
                 cnx.commit()
         except ValidationError, err:
+            if 'login' in err.errors and 'unicity constraint' in err.errors['login']:
+                err.errors.pop('', None)
+                err.errors.pop('login', None)
+                err.errors['login-subject'] = _(
+                    'the value "admin" is already used, use another one')
+                err.entity = None
             # XXX TEMPORARY HACK to allow registration links to work more than
             # once. This is required because some email clients (e.g. kmail)
             # start by downloading the url to find the mimetype of the resource