restore fallback for uow test

in cf6872d3bdf1a8a9613e85369 I decided this test should
be able to run in all cases, however apparently on windows
/ py37 on GH actions something goes wrong, so restore the skip
to that case.

Change-Id: Iaf4db313c20ce30469032af930b7dc86417d0705

1 files changed, 9 insertions, 0 deletions

diff --git a/test/orm/test_unitofwork.py b/test/orm/test_unitofwork.py
index f9c565c86..4f49461c2 100644
--- a/test/orm/test_unitofwork.py
+++ b/test/orm/test_unitofwork.py
@@ -3550,6 +3550,15 @@ class NoRowInsertedTest(fixtures.TestBase):
                         "RETURNING my_table.id"
                     )
                     parameters = {}
+            else:
+                assert not testing.against(
+                    "postgresql"
+                ), "this test has to at least run on PostgreSQL"
+                testing.config.skip_test(
+                    "backend doesn't support the expected form of "
+                    "RETURNING for this test to work"
+                )
+
             return statement, parameters
 
         return MyClass