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List:       git
Subject:    Re: [PATCH] test-lib: use subshell instead of cd $new && .. && cd $old
From:       Ævar Arnfjörð Bjarmason <avarab () gmail ! com>
Date:       2010-08-31 18:11:30
Message-ID: AANLkTim7KWTR0FhnucZ7ROujZ-c7=y80Wz7UnR=+hsgZ () mail ! gmail ! com
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On Tue, Aug 31, 2010 at 17:58, Junio C Hamano <gitster@pobox.com> wrote:
> Jonathan Nieder <jrnieder@gmail.com> writes:
>
>> Ævar Arnfjörð Bjarmason wrote:
>>
>>> +++ b/t/test-lib.sh
>>> @@ -687,14 +687,12 @@ test_when_finished () {
>>>  test_create_repo () {
>>>      test "$#" = 1 ||
>>>      error "bug in the test script: not 1 parameter to test-create-repo"
>>> -    owd=`pwd`
>>>      repo="$1"
>>>      mkdir -p "$repo"
>>> -    cd "$repo" || error "Cannot setup test environment"
>>> +    (cd "$repo" || error "Cannot setup test environment"
>>>      "$GIT_EXEC_PATH/git-init" "--template=$GIT_BUILD_DIR/templates/blt/" >&3 2>&4 ||
>>>      error "cannot run git init -- have you built things yet?"
>>> -    mv .git/hooks .git/hooks-disabled
>>> -    cd "$owd"
>>> +    mv .git/hooks .git/hooks-disabled)
>>
>> Style: why not use
>>
>>       (
>>               cd "$repo" ...
>>               ... .git/hooks-disabled
>>       )
>
> That is a sensible suggestion, but what does "error" do?
>
> I think you would need || exit at the end, i.e.
>
>        (
>                ... || error "..."
>        ) || exit
>
> or something.

Good catch, yes. error() calls exit so this patch as-is introduces a
logic error.
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