Re: [PATCH 3/6] mktag tests: test hash-object --literally and unreachable fsck

> Extend the mktag tests to pass the tag we've created through both
> hash-object --literally and fsck.
> 
> This checks that fsck itself will not complain about certain invalid
> content if a reachable tip isn't involved. Due to how fsck works and
> walks the graph the failure will be different if the object is
> reachable, so we might succeed before we've created the ref.
> 
> Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
> ---
>   t/t3800-mktag.sh | 48 +++++++++++++++++++++++++++++++++++++++---------
>   1 file changed, 39 insertions(+), 9 deletions(-)
> 
> diff --git a/t/t3800-mktag.sh b/t/t3800-mktag.sh
> index 951e6d39c2a..43b67a149f8 100755
> --- a/t/t3800-mktag.sh
> +++ b/t/t3800-mktag.sh
> @@ -16,6 +16,8 @@ check_verify_failure () {
>   	message=$2 &&
>   	shift 2 &&
>   
> +	no_strict= &&
> +	fsck_obj_ok= &&
>   	no_strict= &&
>   	while test $# != 0
>   	do
> @@ -23,7 +25,10 @@ check_verify_failure () {
>   		--no-strict)
>   			no_strict=yes
>   			;;
> -		esac &&
> +		--fsck-obj-ok)
> +			fsck_obj_ok=yes
> +			;;
> +		esac

>   		shift
>   	done &&
>   
> @@ -37,6 +42,23 @@ check_verify_failure () {
>   			git mktag --no-strict <tag.sig
>   		fi
>   	'
> +
> +	test_expect_success "setup: $subject" '
> +		# Reset any leftover state from the last $subject
> +		rm -rf bad-tag &&
> +
> +		git init --bare bad-tag &&
> +		git -C bad-tag hash-object -t tag -w --stdin --literally <tag.sig
> +	'
> +
> +	test_expect_success "hash-object & fsck unreachable: $subject" '
> +		if test -n "$fsck_obj_ok"
> +		then
> +			git -C bad-tag fsck
> +		else
> +			test_must_fail git -C bad-tag fsck >out 2>err

> +		fi
> +	'
>   }
>   
>   test_expect_mktag_success() {
> @@ -183,7 +205,8 @@ tagger . <> 0 +0000
>   EOF
>   
>   check_verify_failure 'verify object (hash/type) check -- correct type, nonexisting object' \
> -	'^fatal: could not read tagged object'
> +	'^fatal: could not read tagged object' \
> +	--fsck-obj-ok
>   
>   cat >tag.sig <<EOF
>   object $head
> @@ -216,7 +239,8 @@ tagger . <> 0 +0000
>   EOF
>   
>   check_verify_failure 'verify object (hash/type) check -- mismatched type, valid object' \
> -	'^fatal: object.*tagged as.*tree.*but is.*commit'
> +	'^fatal: object.*tagged as.*tree.*but is.*commit' \
> +	--fsck-obj-ok
>   
>   ############################################################
>   #  9.5. verify object (hash/type) check -- replacement
> @@ -245,7 +269,8 @@ tagger . <> 0 +0000
>   EOF
>   
>   check_verify_failure 'verify object (hash/type) check -- mismatched type, valid object' \
> -	'^fatal: object.*tagged as.*tree.*but is.*blob'
> +	'^fatal: object.*tagged as.*tree.*but is.*blob' \
> +	--fsck-obj-ok
>   
>   ############################################################
>   # 10. verify tag-name check
> @@ -260,7 +285,8 @@ EOF
>   
>   check_verify_failure 'verify tag-name check' \
>   	'^error:.* badTagName:' \
> -	--no-strict
> +	--no-strict \
> +	--fsck-obj-ok
>   
>   ############################################################
>   # 11. tagger line label check #1
> @@ -275,7 +301,8 @@ EOF
>   
>   check_verify_failure '"tagger" line label check #1' \
>   	'^error:.* missingTaggerEntry:' \
> -	--no-strict
> +	--no-strict \
> +	--fsck-obj-ok
>   
>   ############################################################
>   # 12. tagger line label check #2
> @@ -291,7 +318,8 @@ EOF
>   
>   check_verify_failure '"tagger" line label check #2' \
>   	'^error:.* missingTaggerEntry:' \
> -	--no-strict
> +	--no-strict \
> +	--fsck-obj-ok
>   
>   ############################################################
>   # 13. allow missing tag author name like fsck
> @@ -321,7 +349,8 @@ EOF
>   
>   check_verify_failure 'disallow malformed tagger' \
>   	'^error:.* badEmail:' \
> -	--no-strict
> +	--no-strict \
> +	--fsck-obj-ok
>   
>   ############################################################
>   # 15. allow empty tag email
> @@ -446,7 +475,8 @@ EOF
>   
>   check_verify_failure 'detect invalid header entry' \
>   	'^error:.* extraHeaderEntry:' \
> -	--no-strict
> +	--no-strict \
> +	--fsck-obj-ok
>   
>   test_expect_success 'invalid header entry config & fsck' '
>   	test_must_fail git mktag <tag.sig &&
>