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From: Eric Sunshine <sunshine@sunshineco.com>
To: Denton Liu <liu.denton@gmail.com>
Cc: Git Mailing List <git@vger.kernel.org>
Subject: Re: [PATCH 07/15] t0020: drop redirections to /dev/null
Date: Tue, 17 Dec 2019 14:32:09 -0500
Message-ID: <CAPig+cQJRCAYkn+9CoK0YOXa66B7ocv2qXGLBXy8f-sgE3ipBA@mail.gmail.com> (raw)
In-Reply-To: <d228dcfdc7d3f41c53a3813c52e56638cd8dd95e.1576583819.git.liu.denton@gmail.com>

On Tue, Dec 17, 2019 at 7:02 AM Denton Liu <liu.denton@gmail.com> wrote:
> Since output is silenced when running without `-v` and debugging output
> is useful with `-v`, remove redirections to /dev/null as it is not
> useful.
>
> Signed-off-by: Denton Liu <liu.denton@gmail.com>
> ---
> diff --git a/t/t0020-crlf.sh b/t/t0020-crlf.sh
> @@ -5,7 +5,7 @@ test_description='CRLF conversion'
>  has_cr() {
> -       tr '\015' Q <"$1" | grep Q >/dev/null
> +       tr '\015' Q <"$1" | grep Q
>  }

I'm not sure that I agree with this change since dropping >/dev/null
doesn't improve the situation when someone is trying to debug a
failing test. What this change will do is fill the -v output with a
bunch of lines ending with "Q" when CR is expected -- the normal
_successful_ case for about half the calls to has_cr() -- so -v output
will become a lot noisier without really adding much, if any,
debugging value. If you really want to help people trying to diagnose
failures, I could see you replacing has_cr() with two new functions
which actually provide useful diagnostic output; for instance
something like:

    expect_cr () {
        if ! tr '\015' Q <"$1" | grep Q >/dev/null
        then
            echo "missing CR termination in: $1" >&2 &&
            return 1
        fi
    }

    expect_no_cr () {
        if tr '\015' Q <"$1" | grep Q >/dev/null
        then
            echo "unexpected CR termination in: $1" >&2 &&
            return 1
        fi
    }

However, I'm not convinced that introducing and debugging these
functions is worth the effort over simply dropping this patch from the
series.

  reply index

Thread overview: 64+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-17 12:01 [PATCH 00/15] t: replace incorrect test_must_fail usage (part 1) Denton Liu
2019-12-17 12:01 ` [PATCH 01/15] test-lib-functions: introduce test_non_git_might_fail() Denton Liu
2019-12-17 12:01 ` [PATCH 02/15] t/lib-git-p4: use test_path_is_missing() Denton Liu
2019-12-17 12:01 ` [PATCH 03/15] t0000: replace test_must_fail with ! for run_sub_test_lib_test() Denton Liu
2019-12-17 20:23   ` Johannes Sixt
2019-12-17 12:01 ` [PATCH 04/15] t0003: use named parameters in attr_check() Denton Liu
2019-12-17 18:35   ` Junio C Hamano
2019-12-17 18:43   ` Eric Sunshine
2019-12-17 12:01 ` [PATCH 05/15] t0003: use test_must_be_empty() Denton Liu
2019-12-17 12:01 ` [PATCH 06/15] t0003: don't use `test_must_fail attr_check` Denton Liu
2019-12-17 18:44   ` Junio C Hamano
2019-12-17 12:01 ` [PATCH 07/15] t0020: drop redirections to /dev/null Denton Liu
2019-12-17 19:32   ` Eric Sunshine [this message]
2019-12-17 12:01 ` [PATCH 08/15] t0020: s/test_must_fail has_cr/! has_cr/ Denton Liu
2019-12-17 19:36   ` Eric Sunshine
2019-12-17 12:01 ` [PATCH 09/15] t0020: use ! check_packed_refs_marked Denton Liu
2019-12-17 12:01 ` [PATCH 10/15] t1306: convert `test_might_fail rm` to `rm -f` Denton Liu
2019-12-17 18:55   ` Junio C Hamano
2019-12-17 12:01 ` [PATCH 11/15] t1307: reorder `nongit test_must_fail` Denton Liu
2019-12-17 12:01 ` [PATCH 12/15] t1409: let sed open its own files Denton Liu
2019-12-17 18:57   ` Junio C Hamano
2019-12-17 12:01 ` [PATCH 13/15] t1409: use test_path_is_missing() Denton Liu
2019-12-17 19:01   ` Junio C Hamano
2019-12-17 12:01 ` [PATCH 14/15] t1501: remove use of `test_might_fail cp` Denton Liu
2019-12-17 19:46   ` Eric Sunshine
2019-12-17 12:01 ` [PATCH 15/15] t1507: teach full_name() to accept `!` arg Denton Liu
2019-12-17 19:54   ` Eric Sunshine
2019-12-17 18:28 ` [PATCH 00/15] t: replace incorrect test_must_fail usage (part 1) Junio C Hamano
2019-12-19 22:22 ` [PATCH v2 00/16] " Denton Liu
2019-12-19 22:22   ` [PATCH v2 01/16] test-lib-functions: introduce test_non_git_might_fail() Denton Liu
2019-12-19 22:22   ` [PATCH v2 02/16] t/lib-git-p4: use test_path_is_missing() Denton Liu
2019-12-19 22:22   ` [PATCH v2 03/16] t0000: replace test_must_fail with run_sub_test_lib_test_err() Denton Liu
2019-12-19 22:22   ` [PATCH v2 04/16] t0003: use named parameters in attr_check() Denton Liu
2019-12-19 22:22   ` [PATCH v2 05/16] t0003: use test_must_be_empty() Denton Liu
2019-12-19 22:22   ` [PATCH v2 06/16] t0003: don't use `test_must_fail attr_check` Denton Liu
2019-12-19 22:22   ` [PATCH v2 07/16] t0020: don't use `test_must_fail has_cr` Denton Liu
2019-12-19 22:22   ` [PATCH v2 08/16] t0020: use ! check_packed_refs_marked Denton Liu
2019-12-19 22:22   ` [PATCH v2 09/16] t1306: convert `test_might_fail rm` to `rm -f` Denton Liu
2019-12-19 22:22   ` [PATCH v2 10/16] t1307: reorder `nongit test_must_fail` Denton Liu
2019-12-19 22:22   ` [PATCH v2 11/16] t1409: let sed open its own input file Denton Liu
2019-12-19 22:22   ` [PATCH v2 12/16] t1409: use test_path_is_missing() Denton Liu
2019-12-19 22:22   ` [PATCH v2 13/16] t1501: remove use of `test_might_fail cp` Denton Liu
2019-12-19 22:52     ` Eric Sunshine
2019-12-19 23:19       ` Denton Liu
2019-12-20 17:32         ` Eric Sunshine
2019-12-19 22:22   ` [PATCH v2 14/16] t1507: stop losing return codes of git commands Denton Liu
2019-12-19 22:22   ` [PATCH v2 15/16] t1507: run commands within test_expect_success Denton Liu
2019-12-19 22:22   ` [PATCH v2 16/16] t1507: inline full_name() Denton Liu
2019-12-20 18:15   ` [PATCH v3 00/15] t: replace incorrect test_must_fail usage (part 1) Denton Liu
2019-12-20 18:15     ` [PATCH v3 01/15] t/lib-git-p4: use test_path_is_missing() Denton Liu
2019-12-20 18:15     ` [PATCH v3 02/15] t0000: replace test_must_fail with run_sub_test_lib_test_err() Denton Liu
2019-12-20 18:15     ` [PATCH v3 03/15] t0003: use named parameters in attr_check() Denton Liu
2019-12-20 18:15     ` [PATCH v3 04/15] t0003: use test_must_be_empty() Denton Liu
2019-12-20 18:15     ` [PATCH v3 05/15] t0003: don't use `test_must_fail attr_check` Denton Liu
2019-12-20 18:15     ` [PATCH v3 06/15] t0020: don't use `test_must_fail has_cr` Denton Liu
2019-12-20 18:15     ` [PATCH v3 07/15] t0020: use ! check_packed_refs_marked Denton Liu
2019-12-20 18:15     ` [PATCH v3 08/15] t1306: convert `test_might_fail rm` to `rm -f` Denton Liu
2019-12-20 18:15     ` [PATCH v3 09/15] t1307: reorder `nongit test_must_fail` Denton Liu
2019-12-20 18:15     ` [PATCH v3 10/15] t1409: let sed open its own input file Denton Liu
2019-12-20 18:15     ` [PATCH v3 11/15] t1409: use test_path_is_missing() Denton Liu
2019-12-20 18:15     ` [PATCH v3 12/15] t1501: remove use of `test_might_fail cp` Denton Liu
2019-12-20 18:16     ` [PATCH v3 13/15] t1507: stop losing return codes of git commands Denton Liu
2019-12-20 18:16     ` [PATCH v3 14/15] t1507: run commands within test_expect_success Denton Liu
2019-12-20 18:16     ` [PATCH v3 15/15] t1507: inline full_name() Denton Liu

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