Re: pgsql: Fix pattern matching logic for logs in TAP tests of pgbench

From: Fabien COELHO <coelho(at)cri(dot)ensmp(dot)fr>
To: Andrew Dunstan <andrew(at)dunslane(dot)net>, Michael Paquier <michael(at)paquier(dot)xyz>
Cc: pgsql-committers(at)lists(dot)postgresql(dot)org, PostgreSQL Developers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: pgsql: Fix pattern matching logic for logs in TAP tests of pgbench
Date: 2021-06-26 06:47:34
Message-ID: alpine.DEB.2.22.394.2106260817090.482873@pseudo
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Hello Andrew & Michaël,

My 0.02€:

> There's a whole lot wrong with this code. To start with, why is that
> unchecked eval there.

Yep. The idea was that other tests would go on being collected eg if the
file is not found, but it should have been checked anyway.

> And why is it reading in log files on its own instead of using
> TestLib::slurp_file, which, among other things, normalizes line endings?

Indeed.

However, if slurp_file fails it raises an exception and aborts the whole
TAP unexpectedly, which is pretty unclean. So I'd suggest to keep the
eval, as attached. I tested it by changing the file name so that the slurp
fails.

> There's a very good chance that this latter is the issue. It only
> affects msys which is why you didn't see an issue on MSVC. And also, why
> does it carefully unlink the log files so that any trace of what's gone
> wrong is deleted?

> Based on the little I've seen this file needs a serious code review.

Probably: My very old perl expertise is fading away because I'm not using
it much these days. Cannot say I miss it:-)

--
Fabien.

Attachment Content-Type Size
pgbench-tap-eval-1.patch text/x-diff 1.8 KB

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