From: Peter Eisentraut <peter@eisentraut.org>
Date: Sat, 5 Jun 2021 05:16:34 +0000 (+0200)
Subject: Fix subtransaction test for Python 3.10
X-Git-Tag: REL_10_18~78
X-Git-Url: http://git.postgresql.org/gitweb/?a=commitdiff_plain;h=6b6fbfd7e299e96c3910650b0e192ca05fb590a6;p=postgresql.git

Fix subtransaction test for Python 3.10

Starting with Python 3.10, the stacktrace looks differently:
  -  PL/Python function "subtransaction_exit_subtransaction_in_with", line 3, in <module>
  -    s.__exit__(None, None, None)
  +  PL/Python function "subtransaction_exit_subtransaction_in_with", line 2, in <module>
  +    with plpy.subtransaction() as s:
Using try/except specifically makes the error look always the same.

(See https://github.com/python/cpython/pull/25719 for the discussion
of this change in Python.)

Author: Honza Horak <hhorak@redhat.com>
Discussion: https://www.postgresql.org/message-id/flat/853083.1620749597%40sss.pgh.pa.us
RHBZ: https://bugzilla.redhat.com/show_bug.cgi?id=1959080
---

diff --git a/src/pl/plpython/expected/plpython_subtransaction.out b/src/pl/plpython/expected/plpython_subtransaction.out
index b38cde8d2db..d9a830dfcc6 100644
--- a/src/pl/plpython/expected/plpython_subtransaction.out
+++ b/src/pl/plpython/expected/plpython_subtransaction.out
@@ -236,8 +236,11 @@ with plpy.subtransaction() as s:
 $$ LANGUAGE plpythonu;
 CREATE FUNCTION subtransaction_exit_subtransaction_in_with() RETURNS void
 AS $$
-with plpy.subtransaction() as s:
-    s.__exit__(None, None, None)
+try:
+    with plpy.subtransaction() as s:
+        s.__exit__(None, None, None)
+except ValueError as e:
+    raise ValueError(e)
 $$ LANGUAGE plpythonu;
 SELECT subtransaction_exit_without_enter();
 ERROR:  ValueError: this subtransaction has not been entered
@@ -289,8 +292,8 @@ PL/Python function "subtransaction_enter_subtransaction_in_with"
 SELECT subtransaction_exit_subtransaction_in_with();
 ERROR:  ValueError: this subtransaction has already been exited
 CONTEXT:  Traceback (most recent call last):
-  PL/Python function "subtransaction_exit_subtransaction_in_with", line 3, in <module>
-    s.__exit__(None, None, None)
+  PL/Python function "subtransaction_exit_subtransaction_in_with", line 6, in <module>
+    raise ValueError(e)
 PL/Python function "subtransaction_exit_subtransaction_in_with"
 -- Make sure we don't get a "current transaction is aborted" error
 SELECT 1 as test;
diff --git a/src/pl/plpython/sql/plpython_subtransaction.sql b/src/pl/plpython/sql/plpython_subtransaction.sql
index 398c65720ce..572930f8bf2 100644
--- a/src/pl/plpython/sql/plpython_subtransaction.sql
+++ b/src/pl/plpython/sql/plpython_subtransaction.sql
@@ -158,8 +158,11 @@ $$ LANGUAGE plpythonu;
 
 CREATE FUNCTION subtransaction_exit_subtransaction_in_with() RETURNS void
 AS $$
-with plpy.subtransaction() as s:
-    s.__exit__(None, None, None)
+try:
+    with plpy.subtransaction() as s:
+        s.__exit__(None, None, None)
+except ValueError as e:
+    raise ValueError(e)
 $$ LANGUAGE plpythonu;
 
 SELECT subtransaction_exit_without_enter();