Re: [PATCH v4 10/20] mktag tests: test "hash-object" compatibility

> Change all the successful "mktag" tests to test that "hash-object"
> produces the same hash for the input, and that fsck passes for
> both.
>
> This tests e.g. that "mktag" doesn't trim its input or otherwise munge
> it in a way that "hash-object" doesn't.
>
> Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
> ---
>  t/t3800-mktag.sh | 26 +++++++++++++++-----------
>  1 file changed, 15 insertions(+), 11 deletions(-)
>
> diff --git a/t/t3800-mktag.sh b/t/t3800-mktag.sh
> index f339321be8..c6826762d9 100755
> --- a/t/t3800-mktag.sh
> +++ b/t/t3800-mktag.sh
> @@ -19,6 +19,16 @@ check_verify_failure () {
>  	'
>  }
>  
> +test_expect_mktag_success() {
> +	test_expect_success "$1" '
> +		git hash-object -t tag -w --stdin <tag.sig >expected &&
> +		git fsck --strict &&
> +		git mktag <tag.sig >hash &&
> +		git fsck --strict &&
> +		test_cmp expected hash
> +	'
> +}