Add company context to coupon parties field

issue11635
review439351003

sale.py

@@ -191,7 +191,10 @@ class Sale(metaclass=PoolMeta):
             },
         depends={'coupon_parties'})
     coupon_parties = fields.Function(fields.Many2Many(
-            'party.party', None, None, "Coupon Parties"),
+            'party.party', None, None, "Coupon Parties",
+            context={
+                'company': Eval('company', -1),
+                }),
         'on_change_with_coupon_parties')
 
     @fields.depends(methods=['_coupon_parties'])

tests/test_module.py

@@ -1,10 +1,11 @@
 # This file is part of Tryton.  The COPYRIGHT file at the top level of
 # this repository contains the full copyright notices and license terms.
 
+from trytond.modules.company.tests import CompanyTestMixin
 from trytond.tests.test_tryton import ModuleTestCase
 
 
-class SalePromotionCouponTestCase(ModuleTestCase):
+class SalePromotionCouponTestCase(CompanyTestMixin, ModuleTestCase):
     'Test Sale Promotion Coupon module'
     module = 'sale_promotion_coupon'
 

tryton.cfg

@@ -1,6 +1,7 @@
 [tryton]
 version=6.5.0
 depends:
+    company
     ir
     sale
     sale_promotion