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From: SZEDER Gábor <szeder.dev@gmail.com>
To: Eric Sunshine <sunshine@sunshineco.com>
Cc: Junio C Hamano <gitster@pobox.com>, Jeff King <peff@peff.net>,
	Git List <git@vger.kernel.org>
Subject: Re: [PATCH 1/2] t9400-git-cvsserver-server: don't rely on the output of 'test_cmp'
Date: Thu, 8 Mar 2018 22:49:50 +0100
Message-ID: <CAM0VKjmKcFVOLA-fFnSm=tVapa5qgUoU3Sa7RjSrqoHp5qXZiw@mail.gmail.com> (raw)
In-Reply-To: <CAPig+cTtV2unsixsMCWytdJMiYYytgdvbavfENhBrwvXq_79Bw@mail.gmail.com>

On Thu, Mar 8, 2018 at 7:51 PM, Eric Sunshine <sunshine@sunshineco.com> wrote:
> On Thu, Mar 8, 2018 at 7:38 AM, SZEDER Gábor <szeder.dev@gmail.com> wrote:

>> Unroll that for loop, so we can check the files' contents the usual
>> way and rely on 'test_cmp's exit code failing the && chain.  Extract
>> updating a file via CVS and verifying its contents using 'test_cmp'
>> into a helper function requiring the file's name as parameter to avoid
>> much of the repetition resulting from unrolling the loop.
>
> An alternative approach used elsewhere in the test suite[1] would be
> simply to 'exit' if test_cmp fails:
>
>     for i in merge no-lf empty really-empty; do
>         GIT_CONFIG="$git_config" cvs update -p "$i" >$i.out
>         test_cmp $i.out ../$i || exit 1
>     done &&
>
> (And, like the existing patch, this removes the need for capturing
> test_cmp's output into a "failures" file.)
>
> [1]: For example, the "setup" test of t2204-add-ignored.sh.

But 't/README' sayeth:

    Don't:

     - exit() within a <script> part.

And it's right: 'exit' terminates the shell process it's invoked in,
i.e. the whole test script (well, unless it's invoked in a subshell)
without executing the remaining tests and the usual housekeeping and
reporting.

Consider the following test script:

  -- >8 --

#!/bin/sh

test_description='exit 1?'

. ./test-lib.sh

test_expect_success 'exit 1' '
        exit 1
'

test_expect_success 'second test' '
        true
'

test_done

  -- >8 --

It's output:

  $ ./t9999-exit.sh
  FATAL: Unexpected exit with code 1
  $ sed -e 's/exit 1/false/' -i t9999-exit.sh
  $ ./t9999-exit.sh not ok 1 - false
  #
  #             false
  #
  ok 2 - second test
  # failed 1 among 2 test(s)
  1..2

  reply index

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-03-08 12:38 [PATCH 0/2] Make cvs tests pass with '-x' tracing and /bin/sh SZEDER Gábor
2018-03-08 12:38 ` [PATCH 1/2] t9400-git-cvsserver-server: don't rely on the output of 'test_cmp' SZEDER Gábor
2018-03-08 18:51   ` Eric Sunshine
2018-03-08 21:49     ` SZEDER Gábor [this message]
2018-03-08 22:01       ` Eric Sunshine
2018-03-08 22:07         ` Eric Sunshine
2018-03-08 22:38         ` SZEDER Gábor
2018-03-08 22:44         ` [PATCH v1.1 " SZEDER Gábor
2018-03-08 23:33           ` Junio C Hamano
2018-03-08 23:41             ` SZEDER Gábor
2018-03-08 23:44               ` Junio C Hamano
2018-03-09 11:20                 ` SZEDER Gábor
2018-03-08 12:38 ` [PATCH 2/2] t9402-git-cvsserver-refs: don't check the stderr of a subshell SZEDER Gábor
2018-03-13  0:05 ` [PATCH 0/2] Make cvs tests pass with '-x' tracing and /bin/sh Jeff King

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