From: Heikki Linnakangas <hlinnaka@iki.fi>
To: Daniel Gustafsson <daniel@yesql.se>
To: Alvaro Herrera <alvherre@alvh.no-ip.org>
Cc: Peter Eisentraut <peter@eisentraut.org>
Cc: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Robert Haas <robertmhaas@gmail.com>
Cc: PostgreSQL Hackers <pgsql-hackers@postgresql.org>
Subject: Re: pgsql: Clean up role created in new subscription test.
Date: Fri, 1 Dec 2023 13:37:02 +0200
Message-ID: <8dbff2ac-eada-4f32-bc4f-d7b3b807a35b@iki.fi> (raw)
In-Reply-To: <E0EB10CE-9B58-44C0-8CBC-807BC8E5A84A@yesql.se>
References: <202311081232.rn3aho5ay6yx@alvherre.pgsql>
<E0EB10CE-9B58-44C0-8CBC-807BC8E5A84A@yesql.se>
On 01/12/2023 13:22, Daniel Gustafsson wrote:
>> On 8 Nov 2023, at 13:32, Alvaro Herrera <alvherre@alvh.no-ip.org> wrote:
>
>> I suppose you're just thinking of using PQexec() or whatever, run one
>> query with sufficient ORDER BY, save the result, and at the end of the
>> test run just run the same query and compare that they are cell-by-cell
>> identical? This sounds a lot simpler than the patch you posted.
>
> I found some spare cycles for this and came up with the attached. The idea was
> to keep it in-line with how pg_regress already today manipulate and traverse
> _stringlists for various things. With the addition of the 0001 patch to clean
> up global objects left in test_pg_dump it passes check-world.
Do we want to impose this policy to all extensions too?
> + /*
> + * Store the global objects before the test starts such that we can check
> + * for any objects left behind after the tests finish.
> + */
> + query_to_stringlist("postgres",
> + "(SELECT rolname AS obj FROM pg_catalog.pg_roles ORDER BY 1) "
> + "UNION ALL "
> + "(SELECT spcname AS obj FROM pg_catalog.pg_tablespace ORDER BY 1) "
> + "UNION ALL "
> + "(SELECT subname AS obj FROM pg_catalog.pg_subscription ORDER BY 1)",
> + &globals_before);
> +
Strictly speaking, the order of this query isn't guaranteed to be
stable, although in practice it probably is. Maybe something like this:
(SELECT 'role', rolname AS obj FROM pg_catalog.pg_roles
UNION ALL
SELECT 'tablespace', spcname AS obj FROM pg_catalog.pg_tablespace
UNION ALL
SELECT 'subscription', subname AS obj FROM pg_catalog.pg_subscription
) ORDER BY 1, 2
Is it OK to leave behind extra databases?
--
Heikki Linnakangas
Neon (https://neon.tech)
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Reply to all the recipients using the --to and --cc options:
reply via email
To: pgsql-committers@postgresql.org
Cc: hlinnaka@iki.fi, daniel@yesql.se, alvherre@alvh.no-ip.org, peter@eisentraut.org, tgl@sss.pgh.pa.us, robertmhaas@gmail.com, pgsql-hackers@postgresql.org
Subject: Re: pgsql: Clean up role created in new subscription test.
In-Reply-To: <8dbff2ac-eada-4f32-bc4f-d7b3b807a35b@iki.fi>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox