Add test on context of company multivalue target fields

issue10067
review333851026

tests/test_sale_extra.py

@@ -7,8 +7,10 @@ from trytond.tests.test_tryton import ModuleTestCase
 from trytond.tests.test_tryton import doctest_teardown
 from trytond.tests.test_tryton import doctest_checker
 
+from trytond.modules.company.tests import CompanyMultiValueTestMixin
 
-class SaleExtraTestCase(ModuleTestCase):
+
+class SaleExtraTestCase(CompanyMultiValueTestMixin, ModuleTestCase):
     'Test Sale Extra module'
     module = 'sale_extra'