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From: Junio C Hamano <gitster@pobox•com>
To: Jonathan Nieder <jrnieder@gmail•com>
Cc: "SZEDER Gábor" <szeder@ira•uka.de>,
	"Felipe Contreras" <felipe.contreras@gmail•com>,
	"Jeff King" <peff@peff•net>,
	git@vger•kernel.org
Subject: Re: [PATCH 3/4] rev-parse test: use test_cmp instead of "test" builtin
Date: Tue, 03 Sep 2013 13:01:13 -0700	[thread overview]
Message-ID: <xmqqk3ixr7xy.fsf@gitster.dls.corp.google.com> (raw)
In-Reply-To: <20130903170715.GD29921@google.com> (Jonathan Nieder's message of "Tue, 3 Sep 2013 10:07:15 -0700")

Jonathan Nieder <jrnieder@gmail•com> writes:

> Use test_cmp instead of passing two command substitutions to the
> "test" builtin.  This way:
>
>  - when tests fail, they can print a helpful diff if run with
>    "--verbose"
>
>  - the argument order "test_cmp expect actual" feels natural,
>    unlike test <known> = <unknown> that seems a little backwards

I do not mind to drop s/a little // here, by the way.

>  - the exit status from invoking git is checked, so if rev-parse
>    starts segfaulting then the test will notice and fail
>
> Use a custom function for this instead of test_cmp_rev to emphasize
> that we are testing the output from "git rev-parse" with certain
> arguments, not checking that the revisions are equal in abstract.
>
> Reported-by: Felipe Contreras <felipe.contreras@gmail•com>
> Signed-off-by: Jonathan Nieder <jrnieder@gmail•com>
> ---
>  t/t6101-rev-parse-parents.sh | 33 +++++++++++++++++++--------------
>  1 file changed, 19 insertions(+), 14 deletions(-)
>
> diff --git a/t/t6101-rev-parse-parents.sh b/t/t6101-rev-parse-parents.sh
> index 416067c..8a6ff66 100755
> --- a/t/t6101-rev-parse-parents.sh
> +++ b/t/t6101-rev-parse-parents.sh
> @@ -8,6 +8,12 @@ test_description='Test git rev-parse with different parent options'
>  . ./test-lib.sh
>  . "$TEST_DIRECTORY"/lib-t6000.sh # t6xxx specific functions
>  
> +test_cmp_rev_output () {
> +	git rev-parse --verify "$1" >expect &&
> +	eval "$2" >actual &&
> +	test_cmp expect actual
> +}

After applying this patch and running "git show | grep test_cmp_rev_output",
I notice that the second is always "git rev-parse <something>".  Do
we still need to eval these, or would it be sufficient to do

        test_cmp_rev_output () {
                git rev-parse --verify "$1" >expect &&
                git rev-parse --verify "$2" >actual &&
                test_cmp expect actual
        }

here, and make users like so:

	-	test_cmp_rev_output tags/start "git rev-parse start^0"
	+	test_cmp_rev_output tags/start start^0

Am I missing something?

  reply	other threads:[~2013-09-03 20:01 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-09-02  6:30 [PATCH 0/4] t: rev-parse-parents: cleanups Felipe Contreras
2013-09-02  6:30 ` [PATCH 1/4] t: rev-parse-parents: fix style Felipe Contreras
2013-09-02  6:30 ` [PATCH 2/4] t: rev-parse-parents: fix weird ! notation Felipe Contreras
2013-09-02  6:30 ` [PATCH 3/4] t: rev-parse-parents: avoid yoda conditions Felipe Contreras
2013-09-03  7:12   ` Jeff King
2013-09-03  7:51     ` SZEDER Gábor
2013-09-03  8:03       ` Jeff King
2013-09-03 10:45         ` Felipe Contreras
2013-09-03 11:10           ` SZEDER Gábor
2013-09-03 13:39             ` Felipe Contreras
2013-09-03 15:08               ` SZEDER Gábor
2013-09-03 17:04                 ` [PATCH 0/4] " Jonathan Nieder
2013-09-03 17:05                   ` [PATCH 1/4] rev-parse test: modernize quoting and whitespace Jonathan Nieder
2013-09-03 17:06                   ` [PATCH 2/4] rev-parse test: use test_must_fail, not "if <command>; then false; fi" Jonathan Nieder
2013-09-03 21:56                     ` Felipe Contreras
2013-09-03 17:07                   ` [PATCH 3/4] rev-parse test: use test_cmp instead of "test" builtin Jonathan Nieder
2013-09-03 20:01                     ` Junio C Hamano [this message]
2013-09-04  4:28                       ` Jonathan Nieder
2013-09-03 22:01                     ` Felipe Contreras
2013-09-03 17:11                   ` [PATCH 4/4] rev-parse test: use standard test functions for setup Jonathan Nieder
2013-09-03 17:15                     ` [PATCH v2 " Jonathan Nieder
2013-09-03 17:20                   ` [PATCH 0/4] Re: [PATCH 3/4] t: rev-parse-parents: avoid yoda conditions Jeff King
2013-09-03 21:53                   ` Felipe Contreras
2013-09-04 16:47                   ` Junio C Hamano
2013-09-04 17:13                     ` John Keeping
2013-09-04 17:38                       ` Junio C Hamano
2013-09-04 18:36                         ` Jeff King
2013-09-04 19:14                           ` Junio C Hamano
2013-09-08  3:11                           ` Felipe Contreras
2013-09-08  4:06                             ` Jeff King
2013-09-08  4:13                               ` Felipe Contreras
2013-09-08  4:14                                 ` Felipe Contreras
2013-09-08  4:26                                 ` Jeff King
2013-09-08  4:52                                   ` Felipe Contreras
2013-09-08  5:02                                     ` Jeff King
2013-09-08 23:25                                       ` Felipe Contreras
2013-09-08 23:45                                         ` Jeff King
2013-09-09  0:45                                           ` Felipe Contreras
2013-09-08 18:33                                   ` Junio C Hamano
2013-09-08 23:18                                     ` Felipe Contreras
2013-09-08  8:11                               ` Philip Oakley
2013-09-03 17:31               ` Junio C Hamano
2013-09-03 17:33                 ` Junio C Hamano
2013-09-03 21:52                 ` Felipe Contreras
2013-09-02  6:30 ` [PATCH 4/4] t: rev-parse-parents: simplify setup Felipe Contreras

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