From: | Michael Paquier <michael(dot)paquier(at)gmail(dot)com> |
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To: | Stephen Frost <sfrost(at)snowman(dot)net> |
Cc: | Craig Ringer <craig(at)2ndquadrant(dot)com>, Noah Misch <noah(at)leadboat(dot)com>, PostgreSQL mailing lists <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: Rewriting the test of pg_upgrade as a TAP test |
Date: | 2017-04-03 23:51:40 |
Message-ID: | CAB7nPqS2Xj8Zs48mk7NjtKQa69Of3wtGJ+tKpgs2A-Ne9Zy4ww@mail.gmail.com |
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On Tue, Apr 4, 2017 at 7:38 AM, Stephen Frost <sfrost(at)snowman(dot)net> wrote:
> Not good if it lowers the coverage, but hopefully that's fixable. Have you
> analyzed where we're reducing coverage..?
The current set of tests is just running pg_upgrade using the same
version for the source and target instances. Based on that I am not
lowering what is happening in this set of tests. Just doing some
cleanup.
> As for what I'm remembering, there's this:
> https://www.postgresql.org/message-id/5669acd9-efdc-2a0f-afea-10ba6003a050@dunslane.net
>
> Of course, it's possible I misunderstood..
This invokes directly pg_upgrade, so that's actually a third,
different way to test pg_upgrade on top of the two existing methods
that are used in vcregress.pl and pg_upgrade's test.sh
> That seems focused on upgrading and I'd really like to see a general way to
> do this with the TAP structure, specifically so we can test pg_dump and psql
> against older versions. Having the ability to then be run under the
> coverage testing would be fantastic and would help a great deal with the
> coverage report.
I don't disagree with that. What we need first is some logic to store
in a temporary directory the installation of all the previous major
versions that we have. For example use a subfolder in tmp_install
tagged with the major version number, and then when the TAP test
starts we scan for all the versions present in tmp_install and test
the upgrade with a full grid. One issue though is that we add
$(bindir) in PATH and that there is currently no logic to change PATH
automatically depending on the major/minor versions you are working
on.
So in short I don't think that this lack of infrastructure should be a
barrier for what is basically a cleanup but... I just work here.
--
Michael
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