t/t6020-bundle-misc.sh - jrn/git - Git at Google

 #!/bin/sh
 #
 # Copyright (c) 2021 Jiang Xin
 #

 test_description='Test git-bundle'

 GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
 export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME

 . ./test-lib.sh
 . "$TEST_DIRECTORY"/lib-bundle.sh
 . "$TEST_DIRECTORY"/lib-terminal.sh

 for cmd in create verify list-heads unbundle
 do
 	test_expect_success "usage: git bundle $cmd needs an argument" '
 		test_expect_code 129 git bundle $cmd
 	'
 done

 # Create a commit or tag and set the variable with the object ID.
 test_commit_setvar () {
 	notick=
 	signoff=
 	indir=
 	merge=
 	tag=
 	var=

 	while test $# != 0
 	do
 		case "$1" in
 		--merge)
 			merge=t
 			;;
 		--tag)
 			tag=t
 			;;
 		--notick)
 			notick=t
 			;;
 		--signoff)
 			signoff="$1"
 			;;
 		-C)
 			shift
 			indir="$1"
 			;;
 		-*)
 			echo >&2 "error: unknown option $1"
 			return 1
 			;;
 		*)
 			break
 			;;
 		esac
 		shift
 	done
 	if test $# -lt 2
 	then
 		echo >&2 "error: test_commit_setvar must have at least 2 arguments"
 		return 1
 	fi
 	var=$1
 	shift
 	indir=${indir:+"$indir"/}
 	if test -z "$notick"
 	then
 		test_tick
 	fi &&
 	if test -n "$merge"
 	then
 		git ${indir:+ -C "$indir"} merge --no-edit --no-ff \
 			${2:+-m "$2"} "$1" &&
 		oid=$(git ${indir:+ -C "$indir"} rev-parse HEAD)
 	elif test -n "$tag"
 	then
 		git ${indir:+ -C "$indir"} tag -m "$1" "$1" "${2:-HEAD}" &&
 		oid=$(git ${indir:+ -C "$indir"} rev-parse "$1")
 	else
 		file=${2:-"$1.t"} &&
 		echo "${3-$1}" >"$indir$file" &&
 		git ${indir:+ -C "$indir"} add "$file" &&
 		git ${indir:+ -C "$indir"} commit $signoff -m "$1" &&
 		oid=$(git ${indir:+ -C "$indir"} rev-parse HEAD)
 	fi &&
 	eval $var=$oid
 }

 get_abbrev_oid () {
 	oid=$1 &&
 	suffix=${oid#???????} &&
 	oid=${oid%$suffix} &&
 	if test -n "$oid"
 	then
 		echo "$oid"
 	else
 		echo "undefined-oid"
 	fi
 }

 # Format the output of git commands to make a user-friendly and stable
 # text.  We can easily prepare the expect text without having to worry
 # about future changes of the commit ID.
 make_user_friendly_and_stable_output () {
 	sed \
 		-e "s/$(get_abbrev_oid $A)[0-9a-f]*/<COMMIT-A>/g" \
 		-e "s/$(get_abbrev_oid $B)[0-9a-f]*/<COMMIT-B>/g" \
 		-e "s/$(get_abbrev_oid $C)[0-9a-f]*/<COMMIT-C>/g" \
 		-e "s/$(get_abbrev_oid $D)[0-9a-f]*/<COMMIT-D>/g" \
 		-e "s/$(get_abbrev_oid $E)[0-9a-f]*/<COMMIT-E>/g" \
 		-e "s/$(get_abbrev_oid $F)[0-9a-f]*/<COMMIT-F>/g" \
 		-e "s/$(get_abbrev_oid $G)[0-9a-f]*/<COMMIT-G>/g" \
 		-e "s/$(get_abbrev_oid $H)[0-9a-f]*/<COMMIT-H>/g" \
 		-e "s/$(get_abbrev_oid $I)[0-9a-f]*/<COMMIT-I>/g" \
 		-e "s/$(get_abbrev_oid $J)[0-9a-f]*/<COMMIT-J>/g" \
 		-e "s/$(get_abbrev_oid $K)[0-9a-f]*/<COMMIT-K>/g" \
 		-e "s/$(get_abbrev_oid $L)[0-9a-f]*/<COMMIT-L>/g" \
 		-e "s/$(get_abbrev_oid $M)[0-9a-f]*/<COMMIT-M>/g" \
 		-e "s/$(get_abbrev_oid $N)[0-9a-f]*/<COMMIT-N>/g" \
 		-e "s/$(get_abbrev_oid $O)[0-9a-f]*/<COMMIT-O>/g" \
 		-e "s/$(get_abbrev_oid $P)[0-9a-f]*/<COMMIT-P>/g" \
 		-e "s/$(get_abbrev_oid $TAG1)[0-9a-f]*/<TAG-1>/g" \
 		-e "s/$(get_abbrev_oid $TAG2)[0-9a-f]*/<TAG-2>/g" \
 		-e "s/$(get_abbrev_oid $TAG3)[0-9a-f]*/<TAG-3>/g"
 }

 format_and_save_expect () {
 	sed -e 's/Z$//' >expect
 }

 HASH_MESSAGE="The bundle uses this hash algorithm: $GIT_DEFAULT_HASH"

 #            (C)   (D, pull/1/head, topic/1)
 #             o --- o
 #            /       \                              (L)
 #           /         \        o (H, topic/2)             (M, tag:v2)
 #          /    (F)    \      /                                 (N, tag:v3)
 #         /      o --------- o (G, pull/2/head)      o --- o --- o (release)
 #        /      /        \    \                      /       \
 #  o --- o --- o -------- o -- o ------------------ o ------- o --- o (main)
 # (A)   (B)  (E, tag:v1) (I)  (J)                  (K)       (O)   (P)
 #
 test_expect_success 'setup' '
 	# Try to make a stable fixed width for abbreviated commit ID,
 	# this fixed-width oid will be replaced with "<OID>".
 	git config core.abbrev 7 &&

 	# branch main: commit A & B
 	test_commit_setvar A "Commit A" main.txt &&
 	test_commit_setvar B "Commit B" main.txt &&

 	# branch topic/1: commit C & D, refs/pull/1/head
 	git checkout -b topic/1 &&
 	test_commit_setvar C "Commit C" topic-1.txt &&
 	test_commit_setvar D "Commit D" topic-1.txt &&
 	git update-ref refs/pull/1/head HEAD &&

 	# branch topic/1: commit E, tag v1
 	git checkout main &&
 	test_commit_setvar E "Commit E" main.txt &&
 	test_commit_setvar --tag TAG1 v1 &&

 	# branch topic/2: commit F & G, refs/pull/2/head
 	git checkout -b topic/2 &&
 	test_commit_setvar F "Commit F" topic-2.txt &&
 	test_commit_setvar G "Commit G" topic-2.txt &&
 	git update-ref refs/pull/2/head HEAD &&
 	test_commit_setvar H "Commit H" topic-2.txt &&

 	# branch main: merge commit I & J
 	git checkout main &&
 	test_commit_setvar --merge I topic/1 "Merge commit I" &&
 	test_commit_setvar --merge J refs/pull/2/head "Merge commit J" &&

 	# branch main: commit K
 	git checkout main &&
 	test_commit_setvar K "Commit K" main.txt &&

 	# branch release:
 	git checkout -b release &&
 	test_commit_setvar L "Commit L" release.txt &&
 	test_commit_setvar M "Commit M" release.txt &&
 	test_commit_setvar --tag TAG2 v2 &&
 	test_commit_setvar N "Commit N" release.txt &&
 	test_commit_setvar --tag TAG3 v3 &&

 	# branch main: merge commit O, commit P
 	git checkout main &&
 	test_commit_setvar --merge O tags/v2 "Merge commit O" &&
 	test_commit_setvar P "Commit P" main.txt
 '

 test_expect_success 'create bundle from special rev: main^!' '
 	git bundle create special-rev.bdl "main^!" &&

 	git bundle list-heads special-rev.bdl |
 		make_user_friendly_and_stable_output >actual &&
 	cat >expect <<-\EOF &&
 	<COMMIT-P> refs/heads/main
 	EOF
 	test_cmp expect actual &&

 	git bundle verify special-rev.bdl |
 		make_user_friendly_and_stable_output >actual &&
 	format_and_save_expect <<-EOF &&
 	The bundle contains this ref:
 	<COMMIT-P> refs/heads/main
 	The bundle requires this ref:
 	<COMMIT-O> Z
 	$HASH_MESSAGE
 	EOF
 	test_cmp expect actual &&

 	test_bundle_object_count special-rev.bdl 3
 '

 test_expect_success 'create bundle with --max-count option' '
 	git bundle create max-count.bdl --max-count 1 \
 		main \
 		"^release" \
 		refs/tags/v1 \
 		refs/pull/1/head \
 		refs/pull/2/head &&

 	git bundle verify max-count.bdl |
 		make_user_friendly_and_stable_output >actual &&
 	format_and_save_expect <<-EOF &&
 	The bundle contains these 2 refs:
 	<COMMIT-P> refs/heads/main
 	<TAG-1> refs/tags/v1
 	The bundle requires this ref:
 	<COMMIT-O> Z
 	$HASH_MESSAGE
 	EOF
 	test_cmp expect actual &&

 	test_bundle_object_count max-count.bdl 4
 '

 test_expect_success 'create bundle with --since option' '
 	git log -1 --pretty="%ad" $M >actual &&
 	cat >expect <<-\EOF &&
 	Thu Apr 7 15:26:13 2005 -0700
 	EOF
 	test_cmp expect actual &&

 	git bundle create since.bdl \
 		--since "Thu Apr 7 15:27:00 2005 -0700" \
 		--all &&

 	git bundle verify since.bdl |
 		make_user_friendly_and_stable_output >actual &&
 	format_and_save_expect <<-EOF &&
 	The bundle contains these 5 refs:
 	<COMMIT-P> refs/heads/main
 	<COMMIT-N> refs/heads/release
 	<TAG-2> refs/tags/v2
 	<TAG-3> refs/tags/v3
 	<COMMIT-P> HEAD
 	The bundle requires these 2 refs:
 	<COMMIT-M> Z
 	<COMMIT-K> Z
 	$HASH_MESSAGE
 	EOF
 	test_cmp expect actual &&

 	test_bundle_object_count --thin since.bdl 13
 '

 test_expect_success 'create bundle 1 - no prerequisites' '
 	# create bundle from args
 	git bundle create 1.bdl topic/1 topic/2 &&

 	# create bundle from stdin
 	cat >input <<-\EOF &&
 	topic/1
 	topic/2
 	EOF
 	git bundle create stdin-1.bdl --stdin <input &&

 	format_and_save_expect <<-EOF &&
 	The bundle contains these 2 refs:
 	<COMMIT-D> refs/heads/topic/1
 	<COMMIT-H> refs/heads/topic/2
 	The bundle records a complete history.
 	$HASH_MESSAGE
 	EOF

 	# verify bundle, which has no prerequisites
 	git bundle verify 1.bdl |
 		make_user_friendly_and_stable_output >actual &&
 	test_cmp expect actual &&

 	git bundle verify stdin-1.bdl |
 		make_user_friendly_and_stable_output >actual &&
 	test_cmp expect actual &&

 	test_bundle_object_count       1.bdl 24 &&
 	test_bundle_object_count stdin-1.bdl 24
 '

 test_expect_success 'create bundle 2 - has prerequisites' '
 	# create bundle from args
 	git bundle create 2.bdl \
 		--ignore-missing \
 		^topic/deleted \
 		^$D \
 		^topic/2 \
 		release &&

 	# create bundle from stdin
 	# input has a non-exist reference: "topic/deleted"
 	cat >input <<-EOF &&
 	^topic/deleted
 	^$D
 	^topic/2
 	EOF
 	git bundle create stdin-2.bdl \
 		--ignore-missing \
 		--stdin \
 		release <input &&

 	format_and_save_expect <<-EOF &&
 	The bundle contains this ref:
 	<COMMIT-N> refs/heads/release
 	The bundle requires these 3 refs:
 	<COMMIT-D> Z
 	<COMMIT-E> Z
 	<COMMIT-G> Z
 	$HASH_MESSAGE
 	EOF

 	git bundle verify 2.bdl |
 		make_user_friendly_and_stable_output >actual &&
 	test_cmp expect actual &&

 	git bundle verify stdin-2.bdl |
 		make_user_friendly_and_stable_output >actual &&
 	test_cmp expect actual &&

 	test_bundle_object_count       2.bdl 16 &&
 	test_bundle_object_count stdin-2.bdl 16
 '

 test_expect_success 'fail to verify bundle without prerequisites' '
 	git init --bare test1.git &&

 	format_and_save_expect <<-\EOF &&
 	error: Repository lacks these prerequisite commits:
 	error: <COMMIT-D> Z
 	error: <COMMIT-E> Z
 	error: <COMMIT-G> Z
 	EOF

 	test_must_fail git -C test1.git bundle verify ../2.bdl 2>&1 |
 		make_user_friendly_and_stable_output >actual &&
 	test_cmp expect actual &&

 	test_must_fail git -C test1.git bundle verify ../stdin-2.bdl 2>&1 |
 		make_user_friendly_and_stable_output >actual &&
 	test_cmp expect actual
 '

 test_expect_success 'create bundle 3 - two refs, same object' '
 	# create bundle from args
 	git bundle create --version=3 3.bdl \
 		^release \
 		^topic/1 \
 		^topic/2 \
 		main \
 		HEAD &&

 	# create bundle from stdin
 	cat >input <<-\EOF &&
 	^release
 	^topic/1
 	^topic/2
 	EOF
 	git bundle create --version=3 stdin-3.bdl \
 		--stdin \
 		main HEAD <input &&

 	format_and_save_expect <<-EOF &&
 	The bundle contains these 2 refs:
 	<COMMIT-P> refs/heads/main
 	<COMMIT-P> HEAD
 	The bundle requires these 2 refs:
 	<COMMIT-M> Z
 	<COMMIT-K> Z
 	$HASH_MESSAGE
 	EOF

 	git bundle verify 3.bdl |
 		make_user_friendly_and_stable_output >actual &&
 	test_cmp expect actual &&

 	git bundle verify stdin-3.bdl |
 		make_user_friendly_and_stable_output >actual &&
 	test_cmp expect actual &&

 	test_bundle_object_count       3.bdl 4 &&
 	test_bundle_object_count stdin-3.bdl 4
 '

 test_expect_success 'create bundle 4 - with tags' '
 	# create bundle from args
 	git bundle create 4.bdl \
 		^main \
 		^release \
 		^topic/1 \
 		^topic/2 \
 		--all &&

 	# create bundle from stdin
 	cat >input <<-\EOF &&
 	^main
 	^release
 	^topic/1
 	^topic/2
 	EOF
 	git bundle create stdin-4.bdl \
 		--ignore-missing \
 		--stdin \
 		--all <input &&

 	cat >expect <<-EOF &&
 	The bundle contains these 3 refs:
 	<TAG-1> refs/tags/v1
 	<TAG-2> refs/tags/v2
 	<TAG-3> refs/tags/v3
 	The bundle records a complete history.
 	$HASH_MESSAGE
 	EOF

 	git bundle verify 4.bdl |
 		make_user_friendly_and_stable_output >actual &&
 	test_cmp expect actual &&

 	git bundle verify stdin-4.bdl |
 		make_user_friendly_and_stable_output >actual &&
 	test_cmp expect actual &&

 	test_bundle_object_count       4.bdl 3 &&
 	test_bundle_object_count stdin-4.bdl 3
 '

 test_expect_success 'clone from bundle' '
 	git clone --mirror 1.bdl mirror.git &&
 	git -C mirror.git show-ref |
 		make_user_friendly_and_stable_output >actual &&
 	cat >expect <<-\EOF &&
 	<COMMIT-D> refs/heads/topic/1
 	<COMMIT-H> refs/heads/topic/2
 	EOF
 	test_cmp expect actual &&

 	git -C mirror.git fetch ../2.bdl "+refs/*:refs/*" &&
 	git -C mirror.git show-ref |
 		make_user_friendly_and_stable_output >actual &&
 	cat >expect <<-\EOF &&
 	<COMMIT-N> refs/heads/release
 	<COMMIT-D> refs/heads/topic/1
 	<COMMIT-H> refs/heads/topic/2
 	EOF
 	test_cmp expect actual &&

 	git -C mirror.git fetch ../3.bdl "+refs/*:refs/*" &&
 	git -C mirror.git show-ref |
 		make_user_friendly_and_stable_output >actual &&
 	cat >expect <<-\EOF &&
 	<COMMIT-P> refs/heads/main
 	<COMMIT-N> refs/heads/release
 	<COMMIT-D> refs/heads/topic/1
 	<COMMIT-H> refs/heads/topic/2
 	EOF
 	test_cmp expect actual &&

 	git -C mirror.git fetch ../4.bdl "+refs/*:refs/*" &&
 	git -C mirror.git show-ref |
 		make_user_friendly_and_stable_output >actual &&
 	cat >expect <<-\EOF &&
 	<COMMIT-P> refs/heads/main
 	<COMMIT-N> refs/heads/release
 	<COMMIT-D> refs/heads/topic/1
 	<COMMIT-H> refs/heads/topic/2
 	<TAG-1> refs/tags/v1
 	<TAG-2> refs/tags/v2
 	<TAG-3> refs/tags/v3
 	EOF
 	test_cmp expect actual
 '

 test_expect_success 'unfiltered bundle with --objects' '
 	git bundle create all-objects.bdl \
 		--all --objects &&
 	git bundle create all.bdl \
 		--all &&

 	# Compare the headers of these files.
 	sed -n -e "/^$/q" -e "p" all.bdl >expect &&
 	sed -n -e "/^$/q" -e "p" all-objects.bdl >actual &&
 	test_cmp expect actual
 '

 test_expect_success 'full bundle upto annotated tag' '
 	git bundle create v2.bdl \
 		v2 &&

 	git bundle verify v2.bdl |
 		make_user_friendly_and_stable_output >actual &&

 	format_and_save_expect <<-EOF &&
 	The bundle contains this ref:
 	<TAG-2> refs/tags/v2
 	The bundle records a complete history.
 	$HASH_MESSAGE
 	EOF
 	test_cmp expect actual
 '

 test_expect_success 'clone from full bundle upto annotated tag' '
 	git clone --mirror v2.bdl tag-clone.git &&
 	git -C tag-clone.git show-ref |
 		make_user_friendly_and_stable_output >actual &&
 	cat >expect <<-\EOF &&
 	<TAG-2> refs/tags/v2
 	EOF
 	test_cmp expect actual
 '

 test_expect_success 'incremental bundle between two annotated tags' '
 	git bundle create v1-v2.bdl \
 		v1..v2 &&

 	git bundle verify v1-v2.bdl |
 		make_user_friendly_and_stable_output >actual &&

 	format_and_save_expect <<-EOF &&
 	The bundle contains this ref:
 	<TAG-2> refs/tags/v2
 	The bundle requires these 2 refs:
 	<COMMIT-E> Z
 	<COMMIT-B> Z
 	$HASH_MESSAGE
 	EOF
 	test_cmp expect actual
 '

 for filter in "blob:none" "tree:0" "tree:1" "blob:limit=100"
 do
 	test_expect_success "filtered bundle: $filter" '
 		test_when_finished rm -rf .git/objects/pack cloned unbundled &&
 		git bundle create partial.bdl \
 			--all \
 			--filter=$filter &&

 		git bundle verify partial.bdl >unfiltered &&
 		make_user_friendly_and_stable_output <unfiltered >actual &&

 		cat >expect <<-EOF &&
 		The bundle contains these 10 refs:
 		<COMMIT-P> refs/heads/main
 		<COMMIT-N> refs/heads/release
 		<COMMIT-D> refs/heads/topic/1
 		<COMMIT-H> refs/heads/topic/2
 		<COMMIT-D> refs/pull/1/head
 		<COMMIT-G> refs/pull/2/head
 		<TAG-1> refs/tags/v1
 		<TAG-2> refs/tags/v2
 		<TAG-3> refs/tags/v3
 		<COMMIT-P> HEAD
 		The bundle records a complete history.
 		$HASH_MESSAGE
 		The bundle uses this filter: $filter
 		EOF
 		test_cmp expect actual &&

 		test_config uploadpack.allowfilter 1 &&
 		test_config uploadpack.allowanysha1inwant 1 &&
 		git clone --no-local --filter=$filter --bare "file://$(pwd)" cloned &&

 		git init unbundled &&
 		git -C unbundled bundle unbundle ../partial.bdl >ref-list.txt &&
 		ls unbundled/.git/objects/pack/pack-*.promisor >promisor &&
 		test_line_count = 1 promisor &&

 		# Count the same number of reachable objects.
 		reflist=$(git for-each-ref --format="%(objectname)") &&
 		git rev-list --objects --filter=$filter --missing=allow-any \
 			$reflist >expect &&
 		for repo in cloned unbundled
 		do
 			git -C $repo rev-list --objects --missing=allow-any \
 				$reflist >actual &&
 			test_cmp expect actual || return 1
 		done
 	'
 done

 # NEEDSWORK: 'git clone --bare' should be able to clone from a filtered
 # bundle, but that requires a change to promisor/filter config options.
 # For now, we fail gracefully with a helpful error. This behavior can be
 # changed in the future to succeed as much as possible.
 test_expect_success 'cloning from filtered bundle has useful error' '
 	git bundle create partial.bdl \
 		--all \
 		--filter=blob:none &&
 	test_must_fail git clone --bare partial.bdl partial 2>err &&
 	grep "cannot clone from filtered bundle" err
 '

 test_expect_success 'verify catches unreachable, broken prerequisites' '
 	test_when_finished rm -rf clone-from clone-to &&
 	git init clone-from &&
 	(
 		cd clone-from &&
 		git checkout -b base &&
 		test_commit A &&
 		git checkout -b tip &&
 		git commit --allow-empty -m "will drop by shallow" &&
 		git commit --allow-empty -m "will keep by shallow" &&
 		git commit --allow-empty -m "for bundle, not clone" &&
 		git bundle create tip.bundle tip~1..tip &&
 		git reset --hard HEAD~1 &&
 		git checkout base
 	) &&
 	BAD_OID=$(git -C clone-from rev-parse tip~1) &&
 	TIP_OID=$(git -C clone-from rev-parse tip) &&
 	git clone --depth=1 --no-single-branch \
 		"file://$(pwd)/clone-from" clone-to &&
 	(
 		cd clone-to &&

 		# Set up broken history by removing shallow markers
 		git update-ref -d refs/remotes/origin/tip &&
 		rm .git/shallow &&

 		# Verify should fail
 		test_must_fail git bundle verify \
 			../clone-from/tip.bundle 2>err &&
 		grep "some prerequisite commits .* are not connected" err &&
 		test_line_count = 1 err &&

 		# Unbundling should fail
 		test_must_fail git bundle unbundle \
 			../clone-from/tip.bundle 2>err &&
 		grep "some prerequisite commits .* are not connected" err &&
 		test_line_count = 1 err
 	)
 '

 test_expect_success 'bundle progress includes write phase' '
 	GIT_PROGRESS_DELAY=0 \
 		git bundle create --progress out.bundle --all 2>err &&
 	grep 'Writing' err
 '

 test_expect_success TTY 'create --quiet disables all bundle progress' '
 	test_terminal env GIT_PROGRESS_DELAY=0 \
 		git bundle create --quiet out.bundle --all 2>err &&
 	test_must_be_empty err
 '

 test_expect_success 'bundle progress with --no-quiet' '
 	GIT_PROGRESS_DELAY=0 \
 		git bundle create --no-quiet out.bundle --all 2>err &&
 	grep "%" err
 '

 test_expect_success 'read bundle over stdin' '
 	git bundle create some.bundle HEAD &&

 	git bundle verify - <some.bundle 2>err &&
 	grep "<stdin> is okay" err &&

 	git bundle list-heads some.bundle >expect &&
 	git bundle list-heads - <some.bundle >actual &&
 	test_cmp expect actual &&

 	git bundle unbundle some.bundle >expect &&
 	git bundle unbundle - <some.bundle >actual &&
 	test_cmp expect actual
 '

 test_expect_success 'send a bundle to standard output' '
 	git bundle create - --all HEAD >bundle-one &&
 	mkdir -p down &&
 	git -C down bundle create - --all HEAD >bundle-two &&
 	git bundle verify bundle-one &&
 	git bundle verify bundle-two &&
 	git ls-remote bundle-one >expect &&
 	git ls-remote bundle-two >actual &&
 	test_cmp expect actual
 '

 test_expect_success 'unbundle outside of a repository' '
 	git bundle create some.bundle HEAD &&
 	echo "fatal: Need a repository to unbundle." >expect &&
 	nongit test_must_fail git bundle unbundle "$(pwd)/some.bundle" 2>err &&
 	test_cmp expect err
 '

 test_expect_success 'list-heads outside of a repository' '
 	git bundle create some.bundle HEAD &&
 	cat >expect <<-EOF &&
 	$(git rev-parse HEAD) HEAD
 	EOF
 	nongit git bundle list-heads "$(pwd)/some.bundle" >actual &&
 	test_cmp expect actual
 '

 for hash in sha1 sha256
 do
 	test_expect_success "list-heads with bundle using $hash" '
 		test_when_finished "rm -rf hash" &&
 		git init --object-format=$hash hash &&
 		test_commit -C hash initial &&
 		git -C hash bundle create hash.bundle HEAD &&

 		cat >expect <<-EOF &&
 		$(git -C hash rev-parse HEAD) HEAD
 		EOF
 		git bundle list-heads hash/hash.bundle >actual &&
 		test_cmp expect actual
 	'
 done

 test_done
	#!/bin/sh
	#
	# Copyright (c) 2021 Jiang Xin
	#

	test_description='Test git-bundle'

	GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
	export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME

	. ./test-lib.sh
	. "$TEST_DIRECTORY"/lib-bundle.sh
	. "$TEST_DIRECTORY"/lib-terminal.sh

	for cmd in create verify list-heads unbundle
	do
	test_expect_success "usage: git bundle $cmd needs an argument" '
	test_expect_code 129 git bundle $cmd
	'
	done

	# Create a commit or tag and set the variable with the object ID.
	test_commit_setvar () {
	notick=
	signoff=
	indir=
	merge=
	tag=
	var=

	while test $# != 0
	do
	case "$1" in
	--merge)
	merge=t
	;;
	--tag)
	tag=t
	;;
	--notick)
	notick=t
	;;
	--signoff)
	signoff="$1"
	;;
	-C)
	shift
	indir="$1"
	;;
	-*)
	echo >&2 "error: unknown option $1"
	return 1
	;;
	*)
	break
	;;
	esac
	shift
	done
	if test $# -lt 2
	then
	echo >&2 "error: test_commit_setvar must have at least 2 arguments"
	return 1
	fi
	var=$1
	shift
	indir=${indir:+"$indir"/}
	if test -z "$notick"
	then
	test_tick
	fi &&
	if test -n "$merge"
	then
	git ${indir:+ -C "$indir"} merge --no-edit --no-ff \
	${2:+-m "$2"} "$1" &&
	oid=$(git ${indir:+ -C "$indir"} rev-parse HEAD)
	elif test -n "$tag"
	then
	git ${indir:+ -C "$indir"} tag -m "$1" "$1" "${2:-HEAD}" &&
	oid=$(git ${indir:+ -C "$indir"} rev-parse "$1")
	else
	file=${2:-"$1.t"} &&
	echo "${3-$1}" >"$indir$file" &&
	git ${indir:+ -C "$indir"} add "$file" &&
	git ${indir:+ -C "$indir"} commit $signoff -m "$1" &&
	oid=$(git ${indir:+ -C "$indir"} rev-parse HEAD)
	fi &&
	eval $var=$oid
	}

	get_abbrev_oid () {
	oid=$1 &&
	suffix=${oid#???????} &&
	oid=${oid%$suffix} &&
	if test -n "$oid"
	then
	echo "$oid"
	else
	echo "undefined-oid"
	fi
	}

	# Format the output of git commands to make a user-friendly and stable
	# text. We can easily prepare the expect text without having to worry
	# about future changes of the commit ID.
	make_user_friendly_and_stable_output () {
	sed \
	-e "s/$(get_abbrev_oid $A)[0-9a-f]*/<COMMIT-A>/g" \
	-e "s/$(get_abbrev_oid $B)[0-9a-f]*/<COMMIT-B>/g" \
	-e "s/$(get_abbrev_oid $C)[0-9a-f]*/<COMMIT-C>/g" \
	-e "s/$(get_abbrev_oid $D)[0-9a-f]*/<COMMIT-D>/g" \
	-e "s/$(get_abbrev_oid $E)[0-9a-f]*/<COMMIT-E>/g" \
	-e "s/$(get_abbrev_oid $F)[0-9a-f]*/<COMMIT-F>/g" \
	-e "s/$(get_abbrev_oid $G)[0-9a-f]*/<COMMIT-G>/g" \
	-e "s/$(get_abbrev_oid $H)[0-9a-f]*/<COMMIT-H>/g" \
	-e "s/$(get_abbrev_oid $I)[0-9a-f]*/<COMMIT-I>/g" \
	-e "s/$(get_abbrev_oid $J)[0-9a-f]*/<COMMIT-J>/g" \
	-e "s/$(get_abbrev_oid $K)[0-9a-f]*/<COMMIT-K>/g" \
	-e "s/$(get_abbrev_oid $L)[0-9a-f]*/<COMMIT-L>/g" \
	-e "s/$(get_abbrev_oid $M)[0-9a-f]*/<COMMIT-M>/g" \
	-e "s/$(get_abbrev_oid $N)[0-9a-f]*/<COMMIT-N>/g" \
	-e "s/$(get_abbrev_oid $O)[0-9a-f]*/<COMMIT-O>/g" \
	-e "s/$(get_abbrev_oid $P)[0-9a-f]*/<COMMIT-P>/g" \
	-e "s/$(get_abbrev_oid $TAG1)[0-9a-f]*/<TAG-1>/g" \
	-e "s/$(get_abbrev_oid $TAG2)[0-9a-f]*/<TAG-2>/g" \
	-e "s/$(get_abbrev_oid $TAG3)[0-9a-f]*/<TAG-3>/g"
	}

	format_and_save_expect () {
	sed -e 's/Z$//' >expect
	}

	HASH_MESSAGE="The bundle uses this hash algorithm: $GIT_DEFAULT_HASH"

	# (C) (D, pull/1/head, topic/1)
	# o --- o
	# / \ (L)
	# / \ o (H, topic/2) (M, tag:v2)
	# / (F) \ / (N, tag:v3)
	# / o --------- o (G, pull/2/head) o --- o --- o (release)
	# / / \ \ / \
	# o --- o --- o -------- o -- o ------------------ o ------- o --- o (main)
	# (A) (B) (E, tag:v1) (I) (J) (K) (O) (P)
	#
	test_expect_success 'setup' '
	# Try to make a stable fixed width for abbreviated commit ID,
	# this fixed-width oid will be replaced with "<OID>".
	git config core.abbrev 7 &&

	# branch main: commit A & B
	test_commit_setvar A "Commit A" main.txt &&
	test_commit_setvar B "Commit B" main.txt &&

	# branch topic/1: commit C & D, refs/pull/1/head
	git checkout -b topic/1 &&
	test_commit_setvar C "Commit C" topic-1.txt &&
	test_commit_setvar D "Commit D" topic-1.txt &&
	git update-ref refs/pull/1/head HEAD &&

	# branch topic/1: commit E, tag v1
	git checkout main &&
	test_commit_setvar E "Commit E" main.txt &&
	test_commit_setvar --tag TAG1 v1 &&

	# branch topic/2: commit F & G, refs/pull/2/head
	git checkout -b topic/2 &&
	test_commit_setvar F "Commit F" topic-2.txt &&
	test_commit_setvar G "Commit G" topic-2.txt &&
	git update-ref refs/pull/2/head HEAD &&
	test_commit_setvar H "Commit H" topic-2.txt &&

	# branch main: merge commit I & J
	git checkout main &&
	test_commit_setvar --merge I topic/1 "Merge commit I" &&
	test_commit_setvar --merge J refs/pull/2/head "Merge commit J" &&

	# branch main: commit K
	git checkout main &&
	test_commit_setvar K "Commit K" main.txt &&

	# branch release:
	git checkout -b release &&
	test_commit_setvar L "Commit L" release.txt &&
	test_commit_setvar M "Commit M" release.txt &&
	test_commit_setvar --tag TAG2 v2 &&
	test_commit_setvar N "Commit N" release.txt &&
	test_commit_setvar --tag TAG3 v3 &&

	# branch main: merge commit O, commit P
	git checkout main &&
	test_commit_setvar --merge O tags/v2 "Merge commit O" &&
	test_commit_setvar P "Commit P" main.txt
	'

	test_expect_success 'create bundle from special rev: main^!' '
	git bundle create special-rev.bdl "main^!" &&

	git bundle list-heads special-rev.bdl \|
	make_user_friendly_and_stable_output >actual &&
	cat >expect <<-\EOF &&
	<COMMIT-P> refs/heads/main
	EOF
	test_cmp expect actual &&

	git bundle verify special-rev.bdl \|
	make_user_friendly_and_stable_output >actual &&
	format_and_save_expect <<-EOF &&
	The bundle contains this ref:
	<COMMIT-P> refs/heads/main
	The bundle requires this ref:
	<COMMIT-O> Z
	$HASH_MESSAGE
	EOF
	test_cmp expect actual &&

	test_bundle_object_count special-rev.bdl 3
	'

	test_expect_success 'create bundle with --max-count option' '
	git bundle create max-count.bdl --max-count 1 \
	main \
	"^release" \
	refs/tags/v1 \
	refs/pull/1/head \
	refs/pull/2/head &&

	git bundle verify max-count.bdl \|
	make_user_friendly_and_stable_output >actual &&
	format_and_save_expect <<-EOF &&
	The bundle contains these 2 refs:
	<COMMIT-P> refs/heads/main
	<TAG-1> refs/tags/v1
	The bundle requires this ref:
	<COMMIT-O> Z
	$HASH_MESSAGE
	EOF
	test_cmp expect actual &&

	test_bundle_object_count max-count.bdl 4
	'

	test_expect_success 'create bundle with --since option' '
	git log -1 --pretty="%ad" $M >actual &&
	cat >expect <<-\EOF &&
	Thu Apr 7 15:26:13 2005 -0700
	EOF
	test_cmp expect actual &&

	git bundle create since.bdl \
	--since "Thu Apr 7 15:27:00 2005 -0700" \
	--all &&

	git bundle verify since.bdl \|
	make_user_friendly_and_stable_output >actual &&
	format_and_save_expect <<-EOF &&
	The bundle contains these 5 refs:
	<COMMIT-P> refs/heads/main
	<COMMIT-N> refs/heads/release
	<TAG-2> refs/tags/v2
	<TAG-3> refs/tags/v3
	<COMMIT-P> HEAD
	The bundle requires these 2 refs:
	<COMMIT-M> Z
	<COMMIT-K> Z
	$HASH_MESSAGE
	EOF
	test_cmp expect actual &&

	test_bundle_object_count --thin since.bdl 13
	'

	test_expect_success 'create bundle 1 - no prerequisites' '
	# create bundle from args
	git bundle create 1.bdl topic/1 topic/2 &&

	# create bundle from stdin
	cat >input <<-\EOF &&
	topic/1
	topic/2
	EOF
	git bundle create stdin-1.bdl --stdin <input &&

	format_and_save_expect <<-EOF &&
	The bundle contains these 2 refs:
	<COMMIT-D> refs/heads/topic/1
	<COMMIT-H> refs/heads/topic/2
	The bundle records a complete history.
	$HASH_MESSAGE
	EOF

	# verify bundle, which has no prerequisites
	git bundle verify 1.bdl \|
	make_user_friendly_and_stable_output >actual &&
	test_cmp expect actual &&

	git bundle verify stdin-1.bdl \|
	make_user_friendly_and_stable_output >actual &&
	test_cmp expect actual &&

	test_bundle_object_count 1.bdl 24 &&
	test_bundle_object_count stdin-1.bdl 24
	'

	test_expect_success 'create bundle 2 - has prerequisites' '
	# create bundle from args
	git bundle create 2.bdl \
	--ignore-missing \
	^topic/deleted \
	^$D \
	^topic/2 \
	release &&

	# create bundle from stdin
	# input has a non-exist reference: "topic/deleted"
	cat >input <<-EOF &&
	^topic/deleted
	^$D
	^topic/2
	EOF
	git bundle create stdin-2.bdl \
	--ignore-missing \
	--stdin \
	release <input &&

	format_and_save_expect <<-EOF &&
	The bundle contains this ref:
	<COMMIT-N> refs/heads/release
	The bundle requires these 3 refs:
	<COMMIT-D> Z
	<COMMIT-E> Z
	<COMMIT-G> Z
	$HASH_MESSAGE
	EOF

	git bundle verify 2.bdl \|
	make_user_friendly_and_stable_output >actual &&
	test_cmp expect actual &&

	git bundle verify stdin-2.bdl \|
	make_user_friendly_and_stable_output >actual &&
	test_cmp expect actual &&

	test_bundle_object_count 2.bdl 16 &&
	test_bundle_object_count stdin-2.bdl 16
	'

	test_expect_success 'fail to verify bundle without prerequisites' '
	git init --bare test1.git &&

	format_and_save_expect <<-\EOF &&
	error: Repository lacks these prerequisite commits:
	error: <COMMIT-D> Z
	error: <COMMIT-E> Z
	error: <COMMIT-G> Z
	EOF

	test_must_fail git -C test1.git bundle verify ../2.bdl 2>&1 \|
	make_user_friendly_and_stable_output >actual &&
	test_cmp expect actual &&

	test_must_fail git -C test1.git bundle verify ../stdin-2.bdl 2>&1 \|
	make_user_friendly_and_stable_output >actual &&
	test_cmp expect actual
	'

	test_expect_success 'create bundle 3 - two refs, same object' '
	# create bundle from args
	git bundle create --version=3 3.bdl \
	^release \
	^topic/1 \
	^topic/2 \
	main \
	HEAD &&

	# create bundle from stdin
	cat >input <<-\EOF &&
	^release
	^topic/1
	^topic/2
	EOF
	git bundle create --version=3 stdin-3.bdl \
	--stdin \
	main HEAD <input &&

	format_and_save_expect <<-EOF &&
	The bundle contains these 2 refs:
	<COMMIT-P> refs/heads/main
	<COMMIT-P> HEAD
	The bundle requires these 2 refs:
	<COMMIT-M> Z
	<COMMIT-K> Z
	$HASH_MESSAGE
	EOF

	git bundle verify 3.bdl \|
	make_user_friendly_and_stable_output >actual &&
	test_cmp expect actual &&

	git bundle verify stdin-3.bdl \|
	make_user_friendly_and_stable_output >actual &&
	test_cmp expect actual &&

	test_bundle_object_count 3.bdl 4 &&
	test_bundle_object_count stdin-3.bdl 4
	'

	test_expect_success 'create bundle 4 - with tags' '
	# create bundle from args
	git bundle create 4.bdl \
	^main \
	^release \
	^topic/1 \
	^topic/2 \
	--all &&

	# create bundle from stdin
	cat >input <<-\EOF &&
	^main
	^release
	^topic/1
	^topic/2
	EOF
	git bundle create stdin-4.bdl \
	--ignore-missing \
	--stdin \
	--all <input &&

	cat >expect <<-EOF &&
	The bundle contains these 3 refs:
	<TAG-1> refs/tags/v1
	<TAG-2> refs/tags/v2
	<TAG-3> refs/tags/v3
	The bundle records a complete history.
	$HASH_MESSAGE
	EOF

	git bundle verify 4.bdl \|
	make_user_friendly_and_stable_output >actual &&
	test_cmp expect actual &&

	git bundle verify stdin-4.bdl \|
	make_user_friendly_and_stable_output >actual &&
	test_cmp expect actual &&

	test_bundle_object_count 4.bdl 3 &&
	test_bundle_object_count stdin-4.bdl 3
	'

	test_expect_success 'clone from bundle' '
	git clone --mirror 1.bdl mirror.git &&
	git -C mirror.git show-ref \|
	make_user_friendly_and_stable_output >actual &&
	cat >expect <<-\EOF &&
	<COMMIT-D> refs/heads/topic/1
	<COMMIT-H> refs/heads/topic/2
	EOF
	test_cmp expect actual &&

	git -C mirror.git fetch ../2.bdl "+refs/:refs/" &&
	git -C mirror.git show-ref \|
	make_user_friendly_and_stable_output >actual &&
	cat >expect <<-\EOF &&
	<COMMIT-N> refs/heads/release
	<COMMIT-D> refs/heads/topic/1
	<COMMIT-H> refs/heads/topic/2
	EOF
	test_cmp expect actual &&

	git -C mirror.git fetch ../3.bdl "+refs/:refs/" &&
	git -C mirror.git show-ref \|
	make_user_friendly_and_stable_output >actual &&
	cat >expect <<-\EOF &&
	<COMMIT-P> refs/heads/main
	<COMMIT-N> refs/heads/release
	<COMMIT-D> refs/heads/topic/1
	<COMMIT-H> refs/heads/topic/2
	EOF
	test_cmp expect actual &&

	git -C mirror.git fetch ../4.bdl "+refs/:refs/" &&
	git -C mirror.git show-ref \|
	make_user_friendly_and_stable_output >actual &&
	cat >expect <<-\EOF &&
	<COMMIT-P> refs/heads/main
	<COMMIT-N> refs/heads/release
	<COMMIT-D> refs/heads/topic/1
	<COMMIT-H> refs/heads/topic/2
	<TAG-1> refs/tags/v1
	<TAG-2> refs/tags/v2
	<TAG-3> refs/tags/v3
	EOF
	test_cmp expect actual
	'

	test_expect_success 'unfiltered bundle with --objects' '
	git bundle create all-objects.bdl \
	--all --objects &&
	git bundle create all.bdl \
	--all &&

	# Compare the headers of these files.
	sed -n -e "/^$/q" -e "p" all.bdl >expect &&
	sed -n -e "/^$/q" -e "p" all-objects.bdl >actual &&
	test_cmp expect actual
	'

	test_expect_success 'full bundle upto annotated tag' '
	git bundle create v2.bdl \
	v2 &&

	git bundle verify v2.bdl \|
	make_user_friendly_and_stable_output >actual &&

	format_and_save_expect <<-EOF &&
	The bundle contains this ref:
	<TAG-2> refs/tags/v2
	The bundle records a complete history.
	$HASH_MESSAGE
	EOF
	test_cmp expect actual
	'

	test_expect_success 'clone from full bundle upto annotated tag' '
	git clone --mirror v2.bdl tag-clone.git &&
	git -C tag-clone.git show-ref \|
	make_user_friendly_and_stable_output >actual &&
	cat >expect <<-\EOF &&
	<TAG-2> refs/tags/v2
	EOF
	test_cmp expect actual
	'

	test_expect_success 'incremental bundle between two annotated tags' '
	git bundle create v1-v2.bdl \
	v1..v2 &&

	git bundle verify v1-v2.bdl \|
	make_user_friendly_and_stable_output >actual &&

	format_and_save_expect <<-EOF &&
	The bundle contains this ref:
	<TAG-2> refs/tags/v2
	The bundle requires these 2 refs:
	<COMMIT-E> Z
	<COMMIT-B> Z
	$HASH_MESSAGE
	EOF
	test_cmp expect actual
	'

	for filter in "blob:none" "tree:0" "tree:1" "blob:limit=100"
	do
	test_expect_success "filtered bundle: $filter" '
	test_when_finished rm -rf .git/objects/pack cloned unbundled &&
	git bundle create partial.bdl \
	--all \
	--filter=$filter &&

	git bundle verify partial.bdl >unfiltered &&
	make_user_friendly_and_stable_output <unfiltered >actual &&

	cat >expect <<-EOF &&
	The bundle contains these 10 refs:
	<COMMIT-P> refs/heads/main
	<COMMIT-N> refs/heads/release
	<COMMIT-D> refs/heads/topic/1
	<COMMIT-H> refs/heads/topic/2
	<COMMIT-D> refs/pull/1/head
	<COMMIT-G> refs/pull/2/head
	<TAG-1> refs/tags/v1
	<TAG-2> refs/tags/v2
	<TAG-3> refs/tags/v3
	<COMMIT-P> HEAD
	The bundle records a complete history.
	$HASH_MESSAGE
	The bundle uses this filter: $filter
	EOF
	test_cmp expect actual &&

	test_config uploadpack.allowfilter 1 &&
	test_config uploadpack.allowanysha1inwant 1 &&
	git clone --no-local --filter=$filter --bare "file://$(pwd)" cloned &&

	git init unbundled &&
	git -C unbundled bundle unbundle ../partial.bdl >ref-list.txt &&
	ls unbundled/.git/objects/pack/pack-*.promisor >promisor &&
	test_line_count = 1 promisor &&

	# Count the same number of reachable objects.
	reflist=$(git for-each-ref --format="%(objectname)") &&
	git rev-list --objects --filter=$filter --missing=allow-any \
	$reflist >expect &&
	for repo in cloned unbundled
	do
	git -C $repo rev-list --objects --missing=allow-any \
	$reflist >actual &&
	test_cmp expect actual \|\| return 1
	done
	'
	done

	# NEEDSWORK: 'git clone --bare' should be able to clone from a filtered
	# bundle, but that requires a change to promisor/filter config options.
	# For now, we fail gracefully with a helpful error. This behavior can be
	# changed in the future to succeed as much as possible.
	test_expect_success 'cloning from filtered bundle has useful error' '
	git bundle create partial.bdl \
	--all \
	--filter=blob:none &&
	test_must_fail git clone --bare partial.bdl partial 2>err &&
	grep "cannot clone from filtered bundle" err
	'

	test_expect_success 'verify catches unreachable, broken prerequisites' '
	test_when_finished rm -rf clone-from clone-to &&
	git init clone-from &&
	(
	cd clone-from &&
	git checkout -b base &&
	test_commit A &&
	git checkout -b tip &&
	git commit --allow-empty -m "will drop by shallow" &&
	git commit --allow-empty -m "will keep by shallow" &&
	git commit --allow-empty -m "for bundle, not clone" &&
	git bundle create tip.bundle tip~1..tip &&
	git reset --hard HEAD~1 &&
	git checkout base
	) &&
	BAD_OID=$(git -C clone-from rev-parse tip~1) &&
	TIP_OID=$(git -C clone-from rev-parse tip) &&
	git clone --depth=1 --no-single-branch \
	"file://$(pwd)/clone-from" clone-to &&
	(
	cd clone-to &&

	# Set up broken history by removing shallow markers
	git update-ref -d refs/remotes/origin/tip &&
	rm .git/shallow &&

	# Verify should fail
	test_must_fail git bundle verify \
	../clone-from/tip.bundle 2>err &&
	grep "some prerequisite commits .* are not connected" err &&
	test_line_count = 1 err &&

	# Unbundling should fail
	test_must_fail git bundle unbundle \
	../clone-from/tip.bundle 2>err &&
	grep "some prerequisite commits .* are not connected" err &&
	test_line_count = 1 err
	)
	'

	test_expect_success 'bundle progress includes write phase' '
	GIT_PROGRESS_DELAY=0 \
	git bundle create --progress out.bundle --all 2>err &&
	grep 'Writing' err
	'

	test_expect_success TTY 'create --quiet disables all bundle progress' '
	test_terminal env GIT_PROGRESS_DELAY=0 \
	git bundle create --quiet out.bundle --all 2>err &&
	test_must_be_empty err
	'

	test_expect_success 'bundle progress with --no-quiet' '
	GIT_PROGRESS_DELAY=0 \
	git bundle create --no-quiet out.bundle --all 2>err &&
	grep "%" err
	'

	test_expect_success 'read bundle over stdin' '
	git bundle create some.bundle HEAD &&

	git bundle verify - <some.bundle 2>err &&
	grep "<stdin> is okay" err &&

	git bundle list-heads some.bundle >expect &&
	git bundle list-heads - <some.bundle >actual &&
	test_cmp expect actual &&

	git bundle unbundle some.bundle >expect &&
	git bundle unbundle - <some.bundle >actual &&
	test_cmp expect actual
	'

	test_expect_success 'send a bundle to standard output' '
	git bundle create - --all HEAD >bundle-one &&
	mkdir -p down &&
	git -C down bundle create - --all HEAD >bundle-two &&
	git bundle verify bundle-one &&
	git bundle verify bundle-two &&
	git ls-remote bundle-one >expect &&
	git ls-remote bundle-two >actual &&
	test_cmp expect actual
	'

	test_expect_success 'unbundle outside of a repository' '
	git bundle create some.bundle HEAD &&
	echo "fatal: Need a repository to unbundle." >expect &&
	nongit test_must_fail git bundle unbundle "$(pwd)/some.bundle" 2>err &&
	test_cmp expect err
	'

	test_expect_success 'list-heads outside of a repository' '
	git bundle create some.bundle HEAD &&
	cat >expect <<-EOF &&
	$(git rev-parse HEAD) HEAD
	EOF
	nongit git bundle list-heads "$(pwd)/some.bundle" >actual &&
	test_cmp expect actual
	'

	for hash in sha1 sha256
	do
	test_expect_success "list-heads with bundle using $hash" '
	test_when_finished "rm -rf hash" &&
	git init --object-format=$hash hash &&
	test_commit -C hash initial &&
	git -C hash bundle create hash.bundle HEAD &&

	cat >expect <<-EOF &&
	$(git -C hash rev-parse HEAD) HEAD
	EOF
	git bundle list-heads hash/hash.bundle >actual &&
	test_cmp expect actual
	'
	done

	test_done