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From: Elijah Newren <newren@gmail.com>
To: Jeff King <peff@peff.net>
Cc: Elijah Newren via GitGitGadget <gitgitgadget@gmail.com>,
	Git Mailing List <git@vger.kernel.org>,
	Phillip Wood <phillip.wood123@gmail.com>,
	Taylor Blau <me@ttaylorr.com>
Subject: Re: [PATCH v2 1/3] test-lib: allow selecting tests by substring/regex with --run
Date: Wed, 14 Oct 2020 10:50:03 -0700
Message-ID: <CABPp-BEOrYhUBZ112Z7qFgwUYojmus6_Ra0G0Ts4y+n=-D5vMw@mail.gmail.com> (raw)
In-Reply-To: <20201014170413.GB21687@coredump.intra.peff.net>

On Wed, Oct 14, 2020 at 10:04 AM Jeff King <peff@peff.net> wrote:
>
> On Tue, Oct 13, 2020 at 07:19:44PM +0000, Elijah Newren via GitGitGadget wrote:
>
> > Many of our test scripts have several "setup" tests.  It's a lot easier
> > to say
> >
> >    ./t0050-filesystem.sh --run=setup,9
>
> I like this direction very well.
>
> There was a small discussion recently that we might be better off
> dropping test script numbers entirely, and allowing selection of script
> names by word-hierarchy or regex, too. That's mostly orthogonal to what
> you're doing here, but I think this is taking us in a good direction
> there.
>
> > @@ -819,9 +821,8 @@ match_test_selector_list () {
> >                       *)
> >                               if expr "z$selector" : "z[0-9]*[^0-9]" >/dev/null
> >                               then
> > -                                     echo "error: $title: invalid non-numeric in test" \
> > -                                             "selector: '$orig_selector'" >&2
> > -                                     exit 1
> > +                                     echo "$title" | grep -q "$selector" && return
> > +                                     continue
> >                               fi
>
> I like that you allow regexes. It's unfortunate that the skip-check
> costs us a process in every test. It may not be that big a deal since we
> only pay it if you use a non-numeric selector. But I wonder if there's
> any reason not to use "expr" here, as well.

I originally used [[ $title =~ "$selector" ]] in order to avoid the
sub-shell...but that was bash-specific.  I briefly looked to see if
there was a shell portable way to handle regexes, wasn't having much
luck, and decided that this is only likely to arise when people are
passing --run and thus only running a single script and they avoid all
the subprocesses that would have been invoked inside the test, so it's
still a big net win overall.  Does expr handle regexes, portably?  Or
are you suggesting dropping the regex handling and limit it to
substring matching?  In either case, does using expr save us anything
(isn't expr a shell command)?

  parent reply index

Thread overview: 71+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-12 23:26 [PATCH 0/3] Make test selection easier by specifying description substrings instead of just numeric counters Elijah Newren via GitGitGadget
2020-10-12 23:26 ` [PATCH 1/3] test-lib: allow selecting tests by substring/regex with --run Elijah Newren via GitGitGadget
2020-10-13 15:39   ` Taylor Blau
2020-10-13 17:23     ` Elijah Newren
2020-10-13 17:28       ` Taylor Blau
2020-10-13 18:21         ` Elijah Newren
2020-10-12 23:26 ` [PATCH 2/3] t6006, t6012: adjust tests to use 'setup' instead of synonyms Elijah Newren via GitGitGadget
2020-10-12 23:26 ` [PATCH 3/3] test-lib: reduce verbosity of skipped tests Elijah Newren via GitGitGadget
2020-10-13 15:44   ` Taylor Blau
2020-10-13 17:56     ` Elijah Newren
2020-10-13 19:27       ` Junio C Hamano
2020-10-13 13:08 ` [PATCH 0/3] Make test selection easier by specifying description substrings instead of just numeric counters Phillip Wood
2020-10-15 11:48   ` Johannes Schindelin
2020-10-15 13:42     ` Phillip Wood
2020-10-13 19:19 ` [PATCH v2 " Elijah Newren via GitGitGadget
2020-10-13 19:19   ` [PATCH v2 1/3] test-lib: allow selecting tests by substring/regex with --run Elijah Newren via GitGitGadget
2020-10-14 17:04     ` Jeff King
2020-10-14 17:46       ` Junio C Hamano
2020-10-14 18:07         ` Jeff King
2020-10-14 19:24           ` Junio C Hamano
2020-10-14 19:41             ` Elijah Newren
2020-10-14 19:49               ` Jeff King
2020-10-15 16:09                 ` Junio C Hamano
2020-10-15 15:59               ` Junio C Hamano
2020-10-14 17:50       ` Elijah Newren [this message]
2020-10-14 17:57         ` Junio C Hamano
2020-10-14 19:12           ` Elijah Newren
2020-10-15 16:10             ` Junio C Hamano
2020-10-14 18:09         ` Jeff King
2020-10-14 19:02           ` Elijah Newren
2020-10-15 16:20       ` Junio C Hamano
2020-10-15 19:46         ` Jeff King
2020-10-15 20:08           ` Junio C Hamano
2020-10-16  0:38             ` Jeff King
2020-10-16 16:16               ` Junio C Hamano
2020-10-16 16:30                 ` Junio C Hamano
2020-10-16 20:06                 ` Jeff King
2020-10-16 20:22                   ` Junio C Hamano
2020-10-13 19:19   ` [PATCH v2 2/3] t6006, t6012: adjust tests to use 'setup' instead of synonyms Elijah Newren via GitGitGadget
2020-10-13 19:19   ` [PATCH v2 3/3] test-lib: reduce verbosity of skipped tests Elijah Newren via GitGitGadget
2020-10-14 16:53     ` Jeff King
2020-10-14 17:39       ` Elijah Newren
2020-10-14 17:55         ` Jeff King
2020-10-14 17:57           ` Elijah Newren
2020-10-13 19:49   ` [PATCH v2 0/3] Make test selection easier by specifying description substrings instead of just numeric counters Taylor Blau
2020-10-14 21:13   ` [PATCH v3 " Elijah Newren via GitGitGadget
2020-10-14 21:13     ` [PATCH v3 1/3] test-lib: allow selecting tests by substring/glob with --run Elijah Newren via GitGitGadget
2020-10-16 11:40       ` Phillip Wood
2020-10-16 17:27         ` Elijah Newren
2020-10-16 18:24           ` Phillip Wood
2020-10-16 20:02           ` Junio C Hamano
2020-10-16 20:07             ` Jeff King
2020-10-14 21:13     ` [PATCH v3 2/3] t6006, t6012: adjust tests to use 'setup' instead of synonyms Elijah Newren via GitGitGadget
2020-10-14 21:13     ` [PATCH v3 3/3] test-lib: reduce verbosity of skipped tests Elijah Newren via GitGitGadget
2020-10-15 19:48     ` [PATCH v3 0/3] Make test selection easier by specifying description substrings instead of just numeric counters Jeff King
2020-10-16 19:28     ` [PATCH v4 " Elijah Newren via GitGitGadget
2020-10-16 19:28       ` [PATCH v4 1/3] test-lib: allow selecting tests by substring/glob with --run Elijah Newren via GitGitGadget
2020-10-16 19:28       ` [PATCH v4 2/3] t6006, t6012: adjust tests to use 'setup' instead of synonyms Elijah Newren via GitGitGadget
2020-10-16 19:28       ` [PATCH v4 3/3] test-lib: reduce verbosity of skipped tests Elijah Newren via GitGitGadget
2020-10-16 20:25       ` [PATCH v4 0/3] Make test selection easier by specifying description substrings instead of just numeric counters Junio C Hamano
2020-10-16 20:56         ` Elijah Newren
2020-10-16 22:50       ` [PATCH v5 " Elijah Newren via GitGitGadget
2020-10-16 22:50         ` [PATCH v5 1/3] test-lib: allow selecting tests by substring/glob with --run Elijah Newren via GitGitGadget
2020-10-16 23:25           ` Andrei Rybak
2020-10-17 23:43             ` Elijah Newren
2020-10-16 22:50         ` [PATCH v5 2/3] t6006, t6012: adjust tests to use 'setup' instead of synonyms Elijah Newren via GitGitGadget
2020-10-16 22:50         ` [PATCH v5 3/3] test-lib: reduce verbosity of skipped tests Elijah Newren via GitGitGadget
2020-10-18  0:23         ` [PATCH v6 0/3] Make test selection easier by specifying description substrings instead of just numeric counters Elijah Newren via GitGitGadget
2020-10-18  0:23           ` [PATCH v6 1/3] test-lib: allow selecting tests by substring/glob with --run Elijah Newren via GitGitGadget
2020-10-18  0:23           ` [PATCH v6 2/3] t6006, t6012: adjust tests to use 'setup' instead of synonyms Elijah Newren via GitGitGadget
2020-10-18  0:23           ` [PATCH v6 3/3] test-lib: reduce verbosity of skipped tests Elijah Newren via GitGitGadget

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