Add generic test for field function searcher and domain field method

trytond/trytond/tests/test_tryton.py

@@ -501,6 +501,8 @@ class ModuleTestCase(unittest.TestCase):
                         getattr(model, attr)()
                 elif attr.startswith('order_'):
                     model.search([], order=[(attr[len('order_'):], None)])
+                elif attr.startswith('domain_'):
+                    model.search([(attr[len('domain_'):], '=', None)])
                 elif any(attr.startswith(p) for p in [
                             'on_change_',
                             'on_change_with_',
@@ -759,6 +761,9 @@ class ModuleTestCase(unittest.TestCase):
                                 'model': model.__name__,
                                 'field': field_name,
                                 })
+                        if func_name == field.searcher:
+                            getattr(model, field.searcher)(
+                                field_name, (field_name, '=', None))
 
     @with_transaction()
     def test_ir_action_window(self):