Re: RFC: adding pytest as a supported test framework

From: Jacob Champion <jacob(dot)champion(at)enterprisedb(dot)com>
To: PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>
Cc: Robert Haas <robertmhaas(at)gmail(dot)com>, Jelte Fennema-Nio <postgres(at)jeltef(dot)nl>, Daniel Gustafsson <daniel(at)yesql(dot)se>, Andres Freund <andres(at)anarazel(dot)de>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Peter Eisentraut <peter(at)eisentraut(dot)org>, Nazir Bilal Yavuz <byavuz81(at)gmail(dot)com>
Subject: Re: RFC: adding pytest as a supported test framework
Date: 2025-09-18 18:22:48
Message-ID: CAOYmi+kebAt6wSX7ee0c0kMzV7r0hp93bAt10V5a88yHHUKwog@mail.gmail.com
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On Tue, Sep 9, 2025 at 2:50 PM Jacob Champion
<jacob(dot)champion(at)enterprisedb(dot)com> wrote:
> When enabling the feature, the check_pytest.py script checks that the
> configured `PYTHON` executable has all of pytest-requirements.txt
> installed. Peter pointed out that this is incorrect: what we actually
> want to check is that the interpreter used by pytest has all of the
> required packages, and the two could be different.

Turns out we've already solved this exact problem for Perl and Prove
[1], and I should probably choose a similar solution for Python and
pytest. In other words: make the requirements check into a test.

--Jacob

[1] http://postgr.es/c/c4fe3199a

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