Re: [PATCH] t7501-commit: drop silly command substitution

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

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

> The test '--dry-run with conflicts fixed from a merge' in
> 't7501-commit.sh', added in 8dc874b2ee (wt-status.c: set commitable
> bit if there is a meaningful merge., 2016-02-15), runs the following
> unnecessary and downright bogus command substitution:
>
>   ! $(git merge --no-commit commit-1) &&

I vaguely recall discussing (or noticing myself and then forgetting
to mention it?  I dunno) this exact one on another thread of your
test fixes and drawing the same conclusion as you have here.

Will apply.  Thanks for following it through.

>
> I.e. after 'git merge ...' is executed and expectedly fails, the test
> attempts to execute its output:
>
>   Merging:
>   80f2ea2 commit 2
>   virtual commit-1
>   found 1 common ancestor:
>   e60d113 Initial commit
>   Auto-merging test-file
>   CONFLICT (content): Merge conflict in test-file
>   Automatic merge failed; fix conflicts and then commit the result.
>
> as a command, which most likely fails, because there is no such
> command as "Merging:".  Then '!' negates the failed exit status, the
> test continues, and eventually succeeds.
>
> Remove this command substitution and use 'test_must_fail' to ensure
> that 'git merge' fails.
>
> Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
> ---
>  t/t7501-commit.sh | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/t/t7501-commit.sh b/t/t7501-commit.sh
> index 51646d8019..d766bf34c4 100755
> --- a/t/t7501-commit.sh
> +++ b/t/t7501-commit.sh
> @@ -677,7 +677,7 @@ test_expect_success '--dry-run with conflicts fixed from a merge' '
>  	git checkout -b branch-2 HEAD^1 &&
>  	echo "commit-2-state" >test-file &&
>  	git commit -m "commit 2" -i test-file &&
> -	! $(git merge --no-commit commit-1) &&
> +	test_must_fail git merge --no-commit commit-1 &&
>  	echo "commit-2-state" >test-file &&
>  	git add test-file &&
>  	git commit --dry-run &&