Re: [PATCH 1/2] t5516-fetch-push: fix 'push with dry-run' test

[Junio C Hamano <gitster@pobox.com>]

SZEDER Gábor <szeder.dev@gmail.com> writes:

> In a while-at-it cleanup replacing a 'cd dir && <...> && cd ..' with a
> subshell, commit 28391a80a9 (receive-pack: allow deletion of corrupt
> refs, 2007-11-29) also moved the assignment of the $old_commit
> variable to that subshell.  This variable, however, is used outside of
> that subshell as a parameter of check_push_result(), to check that a
> ref still points to the commit where it is supposed to.  With the
> variable remaining unset outside the subshell check_push_result()
> doesn't perform that check at all.

Sigh/Blush.  Thanks for finding an old screw-up.

>
> Use 'git -C <dir> cmd...', so we don't need to change directory, and
> thus don't need the subshell either when setting $old_commit.
>
> Furthermore, change check_push_result() to require at least three
> parameters (the repo, the oid, and at least one ref), so it will catch
> similar issues earlier should they ever arise.
>
> Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
> ---
>  t/t5516-fetch-push.sh | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/t/t5516-fetch-push.sh b/t/t5516-fetch-push.sh
> index 82239138d5..832b79ad40 100755
> --- a/t/t5516-fetch-push.sh
> +++ b/t/t5516-fetch-push.sh
> @@ -94,6 +94,9 @@ mk_child() {
>  }
>  
>  check_push_result () {
> +	test $# -ge 3 ||
> +	error "bug in the test script: check_push_result requires at least 3 parameters"
> +
>  	repo_name="$1"
>  	shift
>  
> @@ -553,10 +556,7 @@ test_expect_success 'branch.*.pushremote config order is irrelevant' '
>  test_expect_success 'push with dry-run' '
>  
>  	mk_test testrepo heads/master &&
> -	(
> -		cd testrepo &&
> -		old_commit=$(git show-ref -s --verify refs/heads/master)
> -	) &&
> +	old_commit=$(git -C testrepo show-ref -s --verify refs/heads/master) &&
>  	git push --dry-run testrepo : &&
>  	check_push_result testrepo $old_commit heads/master
>  '