Tryton 6.8: indexe neu, tests angepaßt

model.py

@@ -3,7 +3,8 @@
 # The COPYRIGHT file at the top level of this repository contains the
 # full copyright notices and license terms.
 
-from trytond.model import MultiValueMixin, ValueMixin, fields, Unique, Model
+from trytond.model import (
+    MultiValueMixin, ValueMixin, fields, Unique, Model, Index)
 from trytond.transaction import Transaction
 from trytond.pool import Pool
 from trytond.cache import MemoryCache
@@ -290,12 +291,17 @@ def order_name_hierarchical(model_name, tables):
 class UserValueMixin(ValueMixin):
     iduser = fields.Many2One(
         model_name='res.user', string="User",
-        select=True, ondelete='CASCADE', required=True)
+        ondelete='CASCADE', required=True)
 
     @classmethod
     def __setup__(cls):
         super(UserValueMixin, cls).__setup__()
         tab_val = cls.__table__()
+        cls._sql_indexes.update({
+            Index(
+                tab_val,
+                (tab_val.iduser, Index.Equality())),
+            })
         cls._sql_constraints.extend([
             ('val_uniq',
                 Unique(tab_val, tab_val.iduser),