summaryrefslogtreecommitdiff
path: root/t/t5516-fetch-push.sh
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#!/bin/sh
 
test_description='Basic fetch/push functionality.
 
This test checks the following functionality:
 
* command-line syntax
* refspecs
* fast-forward detection, and overriding it
* configuration
* hooks
* --porcelain output format
* hiderefs
* reflogs
'
 
GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
 
. ./test-lib.sh
 
D=$(pwd)
 
mk_empty () {
	repo_name="$1"
	rm -fr "$repo_name" &&
	mkdir "$repo_name" &&
	(
		cd "$repo_name" &&
		git init &&
		git config receive.denyCurrentBranch warn &&
		mv .git/hooks .git/hooks-disabled
	)
}
 
mk_test () {
	repo_name="$1"
	shift
 
	mk_empty "$repo_name" &&
	(
		for ref in "$@"
		do
			git push "$repo_name" $the_first_commit:refs/$ref ||
			exit
		done &&
		cd "$repo_name" &&
		for ref in "$@"
		do
			echo "$the_first_commit" >expect &&
			git show-ref -s --verify refs/$ref >actual &&
			test_cmp expect actual ||
			exit
		done &&
		git fsck --full
	)
}
 
mk_test_with_hooks() {
	repo_name=$1
	mk_test "$@" &&
	(
		cd "$repo_name" &&
		mkdir .git/hooks &&
		cd .git/hooks &&
 
		cat >pre-receive <<-'EOF' &&
		#!/bin/sh
		cat - >>pre-receive.actual
		EOF
 
		cat >update <<-'EOF' &&
		#!/bin/sh
		printf "%s %s %s\n" "$@" >>update.actual
		EOF
 
		cat >post-receive <<-'EOF' &&
		#!/bin/sh
		cat - >>post-receive.actual
		EOF
 
		cat >post-update <<-'EOF' &&
		#!/bin/sh
		for ref in "$@"
		do
			printf "%s\n" "$ref" >>post-update.actual
		done
		EOF
 
		chmod +x pre-receive update post-receive post-update
	)
}
 
mk_child() {
	rm -rf "$2" &&
	git clone "$1" "$2"
}
 
check_push_result () {
	test $# -ge 3 ||
	BUG "check_push_result requires at least 3 parameters"
 
	repo_name="$1"
	shift
 
	(
		cd "$repo_name" &&
		echo "$1" >expect &&
		shift &&
		for ref in "$@"
		do
			git show-ref -s --verify refs/$ref >actual &&
			test_cmp expect actual ||
			exit
		done &&
		git fsck --full
	)
}
 
test_expect_success setup '
 
	>path1 &&
	git add path1 &&
	test_tick &&
	git commit -a -m repo &&
	the_first_commit=$(git show-ref -s --verify refs/heads/main) &&
 
	>path2 &&
	git add path2 &&
	test_tick &&
	git commit -a -m second &&
	the_commit=$(git show-ref -s --verify refs/heads/main)
 
'
 
test_expect_success 'fetch without wildcard' '
	mk_empty testrepo &&
	(
		cd testrepo &&
		git fetch .. refs/heads/main:refs/remotes/origin/main &&
 
		echo "$the_commit commit	refs/remotes/origin/main" >expect &&
		git for-each-ref refs/remotes/origin >actual &&
		test_cmp expect actual
	)
'
 
test_expect_success 'fetch with wildcard' '
	mk_empty testrepo &&
	(
		cd testrepo &&
		git config remote.up.url .. &&
		git config remote.up.fetch "refs/heads/*:refs/remotes/origin/*" &&
		git fetch up &&
 
		echo "$the_commit commit	refs/remotes/origin/main" >expect &&
		git for-each-ref refs/remotes/origin >actual &&
		test_cmp expect actual
	)
'
 
test_expect_success 'fetch with insteadOf' '
	mk_empty testrepo &&
	(
		TRASH=$(pwd)/ &&
		cd testrepo &&
		git config "url.$TRASH.insteadOf" trash/ &&
		git config remote.up.url trash/. &&
		git config remote.up.fetch "refs/heads/*:refs/remotes/origin/*" &&
		git fetch up &&
 
		echo "$the_commit commit	refs/remotes/origin/main" >expect &&
		git for-each-ref refs/remotes/origin >actual &&
		test_cmp expect actual
	)
'
 
test_expect_success 'fetch with pushInsteadOf (should not rewrite)' '
	mk_empty testrepo &&
	(
		TRASH=$(pwd)/ &&
		cd testrepo &&
		git config "url.trash/.pushInsteadOf" "$TRASH" &&
		git config remote.up.url "$TRASH." &&
		git config remote.up.fetch "refs/heads/*:refs/remotes/origin/*" &&
		git fetch up &&
 
		echo "$the_commit commit	refs/remotes/origin/main" >expect &&
		git for-each-ref refs/remotes/origin >actual &&
		test_cmp expect actual
	)
'
 
test_expect_success 'push without wildcard' '
	mk_empty testrepo &&
 
	git push testrepo refs/heads/main:refs/remotes/origin/main &&
	(
		cd testrepo &&
		echo "$the_commit commit	refs/remotes/origin/main" >expect &&
		git for-each-ref refs/remotes/origin >actual &&
		test_cmp expect actual
	)
'
 
test_expect_success 'push with wildcard' '
	mk_empty testrepo &&
 
	git push testrepo "refs/heads/*:refs/remotes/origin/*" &&
	(
		cd testrepo &&
		echo "$the_commit commit	refs/remotes/origin/main" >expect &&
		git for-each-ref refs/remotes/origin >actual &&
		test_cmp expect actual
	)
'
 
test_expect_success 'push with insteadOf' '
	mk_empty testrepo &&
	TRASH="$(pwd)/" &&
	test_config "url.$TRASH.insteadOf" trash/ &&
	git push trash/testrepo refs/heads/main:refs/remotes/origin/main &&
	(
		cd testrepo &&
		echo "$the_commit commit	refs/remotes/origin/main" >expect &&
		git for-each-ref refs/remotes/origin >actual &&
		test_cmp expect actual
	)
'
 
test_expect_success 'push with pushInsteadOf' '
	mk_empty testrepo &&
	TRASH="$(pwd)/" &&
	test_config "url.$TRASH.pushInsteadOf" trash/ &&
	git push trash/testrepo refs/heads/main:refs/remotes/origin/main &&
	(
		cd testrepo &&
		echo "$the_commit commit	refs/remotes/origin/main" >expect &&
		git for-each-ref refs/remotes/origin >actual &&
		test_cmp expect actual
	)
'
 
test_expect_success 'push with pushInsteadOf and explicit pushurl (pushInsteadOf should not rewrite)' '
	mk_empty testrepo &&
	test_config "url.trash2/.pushInsteadOf" testrepo/ &&
	test_config "url.trash3/.pushInsteadOf" trash/wrong &&
	test_config remote.r.url trash/wrong &&
	test_config remote.r.pushurl "testrepo/" &&
	git push r refs/heads/main:refs/remotes/origin/main &&
	(
		cd testrepo &&
		echo "$the_commit commit	refs/remotes/origin/main" >expect &&
		git for-each-ref refs/remotes/origin >actual &&
		test_cmp expect actual
	)
'
 
test_expect_success 'push with matching heads' '
 
	mk_test testrepo heads/main &&
	git push testrepo : &&
	check_push_result testrepo $the_commit heads/main
 
'
 
test_expect_success 'push with matching heads on the command line' '
 
	mk_test testrepo heads/main &&
	git push testrepo : &&
	check_push_result testrepo $the_commit heads/main
 
'
 
test_expect_success 'failed (non-fast-forward) push with matching heads' '
 
	mk_test testrepo heads/main &&
	git push testrepo : &&
	git commit --amend -massaged &&
	test_must_fail git push testrepo &&
	check_push_result testrepo $the_commit heads/main &&
	git reset --hard $the_commit
 
'
 
test_expect_success 'push --force with matching heads' '
 
	mk_test testrepo heads/main &&
	git push testrepo : &&
	git commit --amend -massaged &&
	git push --force testrepo : &&
	! check_push_result testrepo $the_commit heads/main &&
	git reset --hard $the_commit
 
'
 
test_expect_success 'push with matching heads and forced update' '
 
	mk_test testrepo heads/main &&
	git push testrepo : &&
	git commit --amend -massaged &&
	git push testrepo +: &&
	! check_push_result testrepo $the_commit heads/main &&
	git reset --hard $the_commit
 
'
 
test_expect_success 'push with no ambiguity (1)' '
 
	mk_test testrepo heads/main &&
	git push testrepo main:main &&
	check_push_result testrepo $the_commit heads/main
 
'
 
test_expect_success 'push with no ambiguity (2)' '
 
	mk_test testrepo remotes/origin/main &&
	git push testrepo main:origin/main &&
	check_push_result testrepo $the_commit remotes/origin/main
 
'
 
test_expect_success 'push with colon-less refspec, no ambiguity' '
 
	mk_test testrepo heads/main heads/t/main &&
	git branch -f t/main main &&
	git push testrepo main &&
	check_push_result testrepo $the_commit heads/main &&
	check_push_result testrepo $the_first_commit heads/t/main
 
'
 
test_expect_success 'push with weak ambiguity (1)' '
 
	mk_test testrepo heads/main remotes/origin/main &&
	git push testrepo main:main &&
	check_push_result testrepo $the_commit heads/main &&
	check_push_result testrepo $the_first_commit remotes/origin/main
 
'
 
test_expect_success 'push with weak ambiguity (2)' '
 
	mk_test testrepo heads/main remotes/origin/main remotes/another/main &&
	git push testrepo main:main &&
	check_push_result testrepo $the_commit heads/main &&
	check_push_result testrepo $the_first_commit remotes/origin/main remotes/another/main
 
'
 
test_expect_success 'push with ambiguity' '
 
	mk_test testrepo heads/frotz tags/frotz &&
	test_must_fail git push testrepo main:frotz &&
	check_push_result testrepo $the_first_commit heads/frotz tags/frotz
 
'
 
test_expect_success 'push with colon-less refspec (1)' '
 
	mk_test testrepo heads/frotz tags/frotz &&
	git branch -f frotz main &&
	git push testrepo frotz &&
	check_push_result testrepo $the_commit heads/frotz &&
	check_push_result testrepo $the_first_commit tags/frotz
 
'
 
test_expect_success 'push with colon-less refspec (2)' '
 
	mk_test testrepo heads/frotz tags/frotz &&
	if git show-ref --verify -q refs/heads/frotz
	then
		git branch -D frotz
	fi &&
	git tag -f frotz &&
	git push -f testrepo frotz &&
	check_push_result testrepo $the_commit tags/frotz &&
	check_push_result testrepo $the_first_commit heads/frotz
 
'
 
test_expect_success 'push with colon-less refspec (3)' '
 
	mk_test testrepo &&
	if git show-ref --verify -q refs/tags/frotz
	then
		git tag -d frotz
	fi &&
	git branch -f frotz main &&
	git push testrepo frotz &&
	check_push_result testrepo $the_commit heads/frotz &&
	test 1 = $( cd testrepo && git show-ref | wc -l )
'
 
test_expect_success 'push with colon-less refspec (4)' '
 
	mk_test testrepo &&
	if git show-ref --verify -q refs/heads/frotz
	then
		git branch -D frotz
	fi &&
	git tag -f frotz &&
	git push testrepo frotz &&
	check_push_result testrepo $the_commit tags/frotz &&
	test 1 = $( cd testrepo && git show-ref | wc -l )
 
'
 
test_expect_success 'push head with non-existent, incomplete dest' '
 
	mk_test testrepo &&
	git push testrepo main:branch &&
	check_push_result testrepo $the_commit heads/branch
 
'
 
test_expect_success 'push tag with non-existent, incomplete dest' '
 
	mk_test testrepo &&
	git tag -f v1.0 &&
	git push testrepo v1.0:tag &&
	check_push_result testrepo $the_commit tags/tag
 
'
 
test_expect_success 'push sha1 with non-existent, incomplete dest' '
 
	mk_test testrepo &&
	test_must_fail git push testrepo $(git rev-parse main):foo
 
'
 
test_expect_success 'push ref expression with non-existent, incomplete dest' '
 
	mk_test testrepo &&
	test_must_fail git push testrepo main^:branch
 
'
 
for head in HEAD @
do
 
	test_expect_success "push with $head" '
		mk_test testrepo heads/main &&
		git checkout main &&
		git push testrepo $head &&
		check_push_result testrepo $the_commit heads/main
	'
 
	test_expect_success "push with $head nonexisting at remote" '
		mk_test testrepo heads/main &&
		git checkout -b local main &&
		test_when_finished "git checkout main; git branch -D local" &&
		git push testrepo $head &&
		check_push_result testrepo $the_commit heads/local
	'
 
	test_expect_success "push with +$head" '
		mk_test testrepo heads/main &&
		git checkout -b local main &&
		test_when_finished "git checkout main; git branch -D local" &&
		git push testrepo main local &&
		check_push_result testrepo $the_commit heads/main &&
		check_push_result testrepo $the_commit heads/local &&
 
		# Without force rewinding should fail
		git reset --hard $head^ &&
		test_must_fail git push testrepo $head &&
		check_push_result testrepo $the_commit heads/local &&
 
		# With force rewinding should succeed
		git push testrepo +$head &&
		check_push_result testrepo $the_first_commit heads/local
	'
 
	test_expect_success "push $head with non-existent, incomplete dest" '
		mk_test testrepo &&
		git checkout main &&
		git push testrepo $head:branch &&
		check_push_result testrepo $the_commit heads/branch
 
	'
 
	test_expect_success "push with config remote.*.push = $head" '
		mk_test testrepo heads/local &&
		git checkout main &&
		git branch -f local $the_commit &&
		test_when_finished "git branch -D local" &&
		(
			cd testrepo &&
			git checkout local &&
			git reset --hard $the_first_commit
		) &&
		test_config remote.there.url testrepo &&
		test_config remote.there.push $head &&
		test_config branch.main.remote there &&
		git push &&
		check_push_result testrepo $the_commit heads/main &&
		check_push_result testrepo $the_first_commit heads/local
	'
 
done
 
test_expect_success 'push with remote.pushdefault' '
	mk_test up_repo heads/main &&
	mk_test down_repo heads/main &&
	test_config remote.up.url up_repo &&
	test_config remote.down.url down_repo &&
	test_config branch.main.remote up &&
	test_config remote.pushdefault down &&
	test_config push.default matching &&
	git push &&
	check_push_result up_repo $the_first_commit heads/main &&
	check_push_result down_repo $the_commit heads/main
'
 
test_expect_success 'push with config remote.*.pushurl' '
 
	mk_test testrepo heads/main &&
	git checkout main &&
	test_config remote.there.url test2repo &&
	test_config remote.there.pushurl testrepo &&
	git push there : &&
	check_push_result testrepo $the_commit heads/main
'
 
test_expect_success 'push with config branch.*.pushremote' '
	mk_test up_repo heads/main &&
	mk_test side_repo heads/main &&
	mk_test down_repo heads/main &&
	test_config remote.up.url up_repo &&
	test_config remote.pushdefault side_repo &&
	test_config remote.down.url down_repo &&
	test_config branch.main.remote up &&
	test_config branch.main.pushremote down &&
	test_config push.default matching &&
	git push &&
	check_push_result up_repo $the_first_commit heads/main &&
	check_push_result side_repo $the_first_commit heads/main &&
	check_push_result down_repo $the_commit heads/main
'
 
test_expect_success 'branch.*.pushremote config order is irrelevant' '
	mk_test one_repo heads/main &&
	mk_test two_repo heads/main &&
	test_config remote.one.url one_repo &&
	test_config remote.two.url two_repo &&
	test_config branch.main.pushremote two_repo &&
	test_config remote.pushdefault one_repo &&
	test_config push.default matching &&
	git push &&
	check_push_result one_repo $the_first_commit heads/main &&
	check_push_result two_repo $the_commit heads/main
'
 
test_expect_success 'push with dry-run' '
 
	mk_test testrepo heads/main &&
	old_commit=$(git -C testrepo show-ref -s --verify refs/heads/main) &&
	git push --dry-run testrepo : &&
	check_push_result testrepo $old_commit heads/main
'
 
test_expect_success 'push updates local refs' '
 
	mk_test testrepo heads/main &&
	mk_child testrepo child &&
	(
		cd child &&
		git pull .. main &&
		git push &&
		test $(git rev-parse main) = \
			$(git rev-parse remotes/origin/main)
	)
 
'
 
test_expect_success 'push updates up-to-date local refs' '
 
	mk_test testrepo heads/main &&
	mk_child testrepo child1 &&
	mk_child testrepo child2 &&
	(cd child1 && git pull .. main && git push) &&
	(
		cd child2 &&
		git pull ../child1 main &&
		git push &&
		test $(git rev-parse main) = \
			$(git rev-parse remotes/origin/main)
	)
 
'
 
test_expect_success 'push preserves up-to-date packed refs' '
 
	mk_test testrepo heads/main &&
	mk_child testrepo child &&
	(
		cd child &&
		git push &&
		! test -f .git/refs/remotes/origin/main
	)
 
'
 
test_expect_success 'push does not update local refs on failure' '
 
	mk_test testrepo heads/main &&
	mk_child testrepo child &&
	mkdir testrepo/.git/hooks &&
	echo "#!/no/frobnication/today" >testrepo/.git/hooks/pre-receive &&
	chmod +x testrepo/.git/hooks/pre-receive &&
	(
		cd child &&
		git pull .. main &&
		test_must_fail git push &&
		test $(git rev-parse main) != \
			$(git rev-parse remotes/origin/main)
	)
 
'
 
test_expect_success 'allow deleting an invalid remote ref' '
 
	mk_test testrepo heads/main &&
	rm -f testrepo/.git/objects/??/* &&
	git push testrepo :refs/heads/main &&
	(cd testrepo && test_must_fail git rev-parse --verify refs/heads/main)
 
'
 
test_expect_success 'pushing valid refs triggers post-receive and post-update hooks' '
	mk_test_with_hooks testrepo heads/main heads/next &&
	orgmain=$(cd testrepo && git show-ref -s --verify refs/heads/main) &&
	newmain=$(git show-ref -s --verify refs/heads/main) &&
	orgnext=$(cd testrepo && git show-ref -s --verify refs/heads/next) &&
	newnext=$ZERO_OID &&
	git push testrepo refs/heads/main:refs/heads/main :refs/heads/next &&
	(
		cd testrepo/.git &&
		cat >pre-receive.expect <<-EOF &&
		$orgmain $newmain refs/heads/main
		$orgnext $newnext refs/heads/next
		EOF
 
		cat >update.expect <<-EOF &&
		refs/heads/main $orgmain $newmain
		refs/heads/next $orgnext $newnext
		EOF
 
		cat >post-receive.expect <<-EOF &&
		$orgmain $newmain refs/heads/main
		$orgnext $newnext refs/heads/next
		EOF
 
		cat >post-update.expect <<-EOF &&
		refs/heads/main
		refs/heads/next
		EOF
 
		test_cmp pre-receive.expect pre-receive.actual &&
		test_cmp update.expect update.actual &&
		test_cmp post-receive.expect post-receive.actual &&
		test_cmp post-update.expect post-update.actual
	)
'
 
test_expect_success 'deleting dangling ref triggers hooks with correct args' '
	mk_test_with_hooks testrepo heads/main &&
	rm -f testrepo/.git/objects/??/* &&
	git push testrepo :refs/heads/main &&
	(
		cd testrepo/.git &&
		cat >pre-receive.expect <<-EOF &&
		$ZERO_OID $ZERO_OID refs/heads/main
		EOF
 
		cat >update.expect <<-EOF &&
		refs/heads/main $ZERO_OID $ZERO_OID
		EOF
 
		cat >post-receive.expect <<-EOF &&
		$ZERO_OID $ZERO_OID refs/heads/main
		EOF
 
		cat >post-update.expect <<-EOF &&
		refs/heads/main
		EOF
 
		test_cmp pre-receive.expect pre-receive.actual &&
		test_cmp update.expect update.actual &&
		test_cmp post-receive.expect post-receive.actual &&
		test_cmp post-update.expect post-update.actual
	)
'
 
test_expect_success 'deletion of a non-existent ref is not fed to post-receive and post-update hooks' '
	mk_test_with_hooks testrepo heads/main &&
	orgmain=$(cd testrepo && git show-ref -s --verify refs/heads/main) &&
	newmain=$(git show-ref -s --verify refs/heads/main) &&
	git push testrepo main :refs/heads/nonexistent &&
	(
		cd testrepo/.git &&
		cat >pre-receive.expect <<-EOF &&
		$orgmain $newmain refs/heads/main
		$ZERO_OID $ZERO_OID refs/heads/nonexistent
		EOF
 
		cat >update.expect <<-EOF &&
		refs/heads/main $orgmain $newmain
		refs/heads/nonexistent $ZERO_OID $ZERO_OID
		EOF
 
		cat >post-receive.expect <<-EOF &&
		$orgmain $newmain refs/heads/main
		EOF
 
		cat >post-update.expect <<-EOF &&
		refs/heads/main
		EOF
 
		test_cmp pre-receive.expect pre-receive.actual &&
		test_cmp update.expect update.actual &&
		test_cmp post-receive.expect post-receive.actual &&
		test_cmp post-update.expect post-update.actual
	)
'
 
test_expect_success 'deletion of a non-existent ref alone does trigger post-receive and post-update hooks' '
	mk_test_with_hooks testrepo heads/main &&
	git push testrepo :refs/heads/nonexistent &&
	(
		cd testrepo/.git &&
		cat >pre-receive.expect <<-EOF &&
		$ZERO_OID $ZERO_OID refs/heads/nonexistent
		EOF
 
		cat >update.expect <<-EOF &&
		refs/heads/nonexistent $ZERO_OID $ZERO_OID
		EOF
 
		test_cmp pre-receive.expect pre-receive.actual &&
		test_cmp update.expect update.actual &&
		test_path_is_missing post-receive.actual &&
		test_path_is_missing post-update.actual
	)
'
 
test_expect_success 'mixed ref updates, deletes, invalid deletes trigger hooks with correct input' '
	mk_test_with_hooks testrepo heads/main heads/next heads/seen &&
	orgmain=$(cd testrepo && git show-ref -s --verify refs/heads/main) &&
	newmain=$(git show-ref -s --verify refs/heads/main) &&
	orgnext=$(cd testrepo && git show-ref -s --verify refs/heads/next) &&
	newnext=$ZERO_OID &&
	orgseen=$(cd testrepo && git show-ref -s --verify refs/heads/seen) &&
	newseen=$(git show-ref -s --verify refs/heads/main) &&
	git push testrepo refs/heads/main:refs/heads/main \
	    refs/heads/main:refs/heads/seen :refs/heads/next \
	    :refs/heads/nonexistent &&
	(
		cd testrepo/.git &&
		cat >pre-receive.expect <<-EOF &&
		$orgmain $newmain refs/heads/main
		$orgnext $newnext refs/heads/next
		$orgseen $newseen refs/heads/seen
		$ZERO_OID $ZERO_OID refs/heads/nonexistent
		EOF
 
		cat >update.expect <<-EOF &&
		refs/heads/main $orgmain $newmain
		refs/heads/next $orgnext $newnext
		refs/heads/seen $orgseen $newseen
		refs/heads/nonexistent $ZERO_OID $ZERO_OID
		EOF
 
		cat >post-receive.expect <<-EOF &&
		$orgmain $newmain refs/heads/main
		$orgnext $newnext refs/heads/next
		$orgseen $newseen refs/heads/seen
		EOF
 
		cat >post-update.expect <<-EOF &&
		refs/heads/main
		refs/heads/next
		refs/heads/seen
		EOF
 
		test_cmp pre-receive.expect pre-receive.actual &&
		test_cmp update.expect update.actual &&
		test_cmp post-receive.expect post-receive.actual &&
		test_cmp post-update.expect post-update.actual
	)
'
 
test_expect_success 'allow deleting a ref using --delete' '
	mk_test testrepo heads/main &&
	(cd testrepo && git config receive.denyDeleteCurrent warn) &&
	git push testrepo --delete main &&
	(cd testrepo && test_must_fail git rev-parse --verify refs/heads/main)
'
 
test_expect_success 'allow deleting a tag using --delete' '
	mk_test testrepo heads/main &&
	git tag -a -m dummy_message deltag heads/main &&
	git push testrepo --tags &&
	(cd testrepo && git rev-parse --verify -q refs/tags/deltag) &&
	git push testrepo --delete tag deltag &&
	(cd testrepo && test_must_fail git rev-parse --verify refs/tags/deltag)
'
 
test_expect_success 'push --delete without args aborts' '
	mk_test testrepo heads/main &&
	test_must_fail git push testrepo --delete
'
 
test_expect_success 'push --delete refuses src:dest refspecs' '
	mk_test testrepo heads/main &&
	test_must_fail git push testrepo --delete main:foo
'
 
test_expect_success 'push --delete refuses empty string' '
	mk_test testrepo heads/master &&
	test_must_fail git push testrepo --delete ""
'
 
test_expect_success 'warn on push to HEAD of non-bare repository' '
	mk_test testrepo heads/main &&
	(
		cd testrepo &&
		git checkout main &&
		git config receive.denyCurrentBranch warn
	) &&
	git push testrepo main 2>stderr &&
	grep "warning: updating the current branch" stderr
'
 
test_expect_success 'deny push to HEAD of non-bare repository' '
	mk_test testrepo heads/main &&
	(
		cd testrepo &&
		git checkout main &&
		git config receive.denyCurrentBranch true
	) &&
	test_must_fail git push testrepo main
'
 
test_expect_success 'allow push to HEAD of bare repository (bare)' '
	mk_test testrepo heads/main &&
	(
		cd testrepo &&
		git checkout main &&
		git config receive.denyCurrentBranch true &&
		git config core.bare true
	) &&
	git push testrepo main 2>stderr &&
	! grep "warning: updating the current branch" stderr
'
 
test_expect_success 'allow push to HEAD of non-bare repository (config)' '
	mk_test testrepo heads/main &&
	(
		cd testrepo &&
		git checkout main &&
		git config receive.denyCurrentBranch false
	) &&
	git push testrepo main 2>stderr &&
	! grep "warning: updating the current branch" stderr
'
 
test_expect_success 'fetch with branches' '
	mk_empty testrepo &&
	git branch second $the_first_commit &&
	git checkout second &&
	echo ".." > testrepo/.git/branches/branch1 &&
	(
		cd testrepo &&
		git fetch branch1 &&
		echo "$the_commit commit	refs/heads/branch1" >expect &&
		git for-each-ref refs/heads >actual &&
		test_cmp expect actual
	) &&
	git checkout main
'
 
test_expect_success 'fetch with branches containing #' '
	mk_empty testrepo &&
	echo "..#second" > testrepo/.git/branches/branch2 &&
	(
		cd testrepo &&
		git fetch branch2 &&
		echo "$the_first_commit commit	refs/heads/branch2" >expect &&
		git for-each-ref refs/heads >actual &&
		test_cmp expect actual
	) &&
	git checkout main
'
 
test_expect_success 'push with branches' '
	mk_empty testrepo &&
	git checkout second &&
	echo "testrepo" > .git/branches/branch1 &&
	git push branch1 &&
	(
		cd testrepo &&
		echo "$the_first_commit commit	refs/heads/main" >expect &&
		git for-each-ref refs/heads >actual &&
		test_cmp expect actual
	)
'
 
test_expect_success 'push with branches containing #' '
	mk_empty testrepo &&
	echo "testrepo#branch3" > .git/branches/branch2 &&
	git push branch2 &&
	(
		cd testrepo &&
		echo "$the_first_commit commit	refs/heads/branch3" >expect &&
		git for-each-ref refs/heads >actual &&
		test_cmp expect actual
	) &&
	git checkout main
'
 
test_expect_success 'push into aliased refs (consistent)' '
	mk_test testrepo heads/main &&
	mk_child testrepo child1 &&
	mk_child testrepo child2 &&
	(
		cd child1 &&
		git branch foo &&
		git symbolic-ref refs/heads/bar refs/heads/foo &&
		git config receive.denyCurrentBranch false
	) &&
	(
		cd child2 &&
		>path2 &&
		git add path2 &&
		test_tick &&
		git commit -a -m child2 &&
		git branch foo &&
		git branch bar &&
		git push ../child1 foo bar
	)
'
 
test_expect_success 'push into aliased refs (inconsistent)' '
	mk_test testrepo heads/main &&
	mk_child testrepo child1 &&
	mk_child testrepo child2 &&
	(
		cd child1 &&
		git branch foo &&
		git symbolic-ref refs/heads/bar refs/heads/foo &&
		git config receive.denyCurrentBranch false
	) &&
	(
		cd child2 &&
		>path2 &&
		git add path2 &&
		test_tick &&
		git commit -a -m child2 &&
		git branch foo &&
		>path3 &&
		git add path3 &&
		test_tick &&
		git commit -a -m child2 &&
		git branch bar &&
		test_must_fail git push ../child1 foo bar 2>stderr &&
		grep "refusing inconsistent update" stderr
	)
'
 
test_force_push_tag () {
	tag_type_description=$1
	tag_args=$2
 
	test_expect_success "force pushing required to update $tag_type_description" "
		mk_test testrepo heads/main &&
		mk_child testrepo child1 &&
		mk_child testrepo child2 &&
		(
			cd child1 &&
			git tag testTag &&
			git push ../child2 testTag &&
			>file1 &&
			git add file1 &&
			git commit -m 'file1' &&
			git tag $tag_args testTag &&
			test_must_fail git push ../child2 testTag &&
			git push --force ../child2 testTag &&
			git tag $tag_args testTag HEAD~ &&
			test_must_fail git push ../child2 testTag &&
			git push --force ../child2 testTag &&
 
			# Clobbering without + in refspec needs --force
			git tag -f testTag &&
			test_must_fail git push ../child2 'refs/tags/*:refs/tags/*' &&
			git push --force ../child2 'refs/tags/*:refs/tags/*' &&
 
			# Clobbering with + in refspec does not need --force
			git tag -f testTag HEAD~ &&
			git push ../child2 '+refs/tags/*:refs/tags/*' &&
 
			# Clobbering with --no-force still obeys + in refspec
			git tag -f testTag &&
			git push --no-force ../child2 '+refs/tags/*:refs/tags/*' &&
 
			# Clobbering with/without --force and 'tag <name>' format
			git tag -f testTag HEAD~ &&
			test_must_fail git push ../child2 tag testTag &&
			git push --force ../child2 tag testTag
		)
	"
}
 
test_force_push_tag "lightweight tag" "-f"
test_force_push_tag "annotated tag" "-f -a -m'tag message'"
 
test_force_fetch_tag () {
	tag_type_description=$1
	tag_args=$2
 
	test_expect_success "fetch will not clobber an existing $tag_type_description without --force" "
		mk_test testrepo heads/main &&
		mk_child testrepo child1 &&
		mk_child testrepo child2 &&
		(
			cd testrepo &&
			git tag testTag &&
			git -C ../child1 fetch origin tag testTag &&
			>file1 &&
			git add file1 &&
			git commit -m 'file1' &&
			git tag $tag_args testTag &&
			test_must_fail git -C ../child1 fetch origin tag testTag &&
			git -C ../child1 fetch origin '+refs/tags/*:refs/tags/*'
		)
	"
}
 
test_force_fetch_tag "lightweight tag" "-f"
test_force_fetch_tag "annotated tag" "-f -a -m'tag message'"
 
test_expect_success 'push --porcelain' '
	mk_empty testrepo &&
	echo >.git/foo  "To testrepo" &&
	echo >>.git/foo "*	refs/heads/main:refs/remotes/origin/main	[new reference]"  &&
	echo >>.git/foo "Done" &&
	git push >.git/bar --porcelain  testrepo refs/heads/main:refs/remotes/origin/main &&
	(
		cd testrepo &&
		echo "$the_commit commit	refs/remotes/origin/main" >expect &&
		git for-each-ref refs/remotes/origin >actual &&
		test_cmp expect actual
	) &&
	test_cmp .git/foo .git/bar
'
 
test_expect_success 'push --porcelain bad url' '
	mk_empty testrepo &&
	test_must_fail git push >.git/bar --porcelain asdfasdfasd refs/heads/main:refs/remotes/origin/main &&
	! grep -q Done .git/bar
'
 
test_expect_success 'push --porcelain rejected' '
	mk_empty testrepo &&
	git push testrepo refs/heads/main:refs/remotes/origin/main &&
	(cd testrepo &&
		git reset --hard origin/main^ &&
		git config receive.denyCurrentBranch true) &&
 
	echo >.git/foo  "To testrepo"  &&
	echo >>.git/foo "!	refs/heads/main:refs/heads/main	[remote rejected] (branch is currently checked out)" &&
	echo >>.git/foo "Done" &&
 
	test_must_fail git push >.git/bar --porcelain  testrepo refs/heads/main:refs/heads/main &&
	test_cmp .git/foo .git/bar
'
 
test_expect_success 'push --porcelain --dry-run rejected' '
	mk_empty testrepo &&
	git push testrepo refs/heads/main:refs/remotes/origin/main &&
	(cd testrepo &&
		git reset --hard origin/main &&
		git config receive.denyCurrentBranch true) &&
 
	echo >.git/foo  "To testrepo"  &&
	echo >>.git/foo "!	refs/heads/main^:refs/heads/main	[rejected] (non-fast-forward)" &&
	echo >>.git/foo "Done" &&
 
	test_must_fail git push >.git/bar --porcelain  --dry-run testrepo refs/heads/main^:refs/heads/main &&
	test_cmp .git/foo .git/bar
'
 
test_expect_success 'push --prune' '
	mk_test testrepo heads/main heads/second heads/foo heads/bar &&
	git push --prune testrepo : &&
	check_push_result testrepo $the_commit heads/main &&
	check_push_result testrepo $the_first_commit heads/second &&
	! check_push_result testrepo $the_first_commit heads/foo heads/bar
'
 
test_expect_success 'push --prune refspec' '
	mk_test testrepo tmp/main tmp/second tmp/foo tmp/bar &&
	git push --prune testrepo "refs/heads/*:refs/tmp/*" &&
	check_push_result testrepo $the_commit tmp/main &&
	check_push_result testrepo $the_first_commit tmp/second &&
	! check_push_result testrepo $the_first_commit tmp/foo tmp/bar
'
 
for configsection in transfer receive
do
	test_expect_success "push to update a ref hidden by $configsection.hiderefs" '
		mk_test testrepo heads/main hidden/one hidden/two hidden/three &&
		(
			cd testrepo &&
			git config $configsection.hiderefs refs/hidden
		) &&
 
		# push to unhidden ref succeeds normally
		git push testrepo main:refs/heads/main &&
		check_push_result testrepo $the_commit heads/main &&
 
		# push to update a hidden ref should fail
		test_must_fail git push testrepo main:refs/hidden/one &&
		check_push_result testrepo $the_first_commit hidden/one &&
 
		# push to delete a hidden ref should fail
		test_must_fail git push testrepo :refs/hidden/two &&
		check_push_result testrepo $the_first_commit hidden/two &&
 
		# idempotent push to update a hidden ref should fail
		test_must_fail git push testrepo $the_first_commit:refs/hidden/three &&
		check_push_result testrepo $the_first_commit hidden/three
	'
done
 
test_expect_success 'fetch exact SHA1' '
	mk_test testrepo heads/main hidden/one &&
	git push testrepo main:refs/hidden/one &&
	(
		cd testrepo &&
		git config transfer.hiderefs refs/hidden
	) &&
	check_push_result testrepo $the_commit hidden/one &&
 
	mk_child testrepo child &&
	(
		cd child &&
 
		# make sure $the_commit does not exist here
		git repack -a -d &&
		git prune &&
		test_must_fail git cat-file -t $the_commit &&
 
		# Some protocol versions (e.g. 2) support fetching
		# unadvertised objects, so restrict this test to v0.
 
		# fetching the hidden object should fail by default
		test_must_fail env GIT_TEST_PROTOCOL_VERSION=0 \
			git fetch -v ../testrepo $the_commit:refs/heads/copy 2>err &&
		test_i18ngrep "Server does not allow request for unadvertised object" err &&
		test_must_fail git rev-parse --verify refs/heads/copy &&
 
		# the server side can allow it to succeed
		(
			cd ../testrepo &&
			git config uploadpack.allowtipsha1inwant true
		) &&
 
		git fetch -v ../testrepo $the_commit:refs/heads/copy main:refs/heads/extra &&
		cat >expect <<-EOF &&
		$the_commit
		$the_first_commit
		EOF
		{
			git rev-parse --verify refs/heads/copy &&
			git rev-parse --verify refs/heads/extra
		} >actual &&
		test_cmp expect actual
	)
'
 
test_expect_success 'fetch exact SHA1 in protocol v2' '
	mk_test testrepo heads/main hidden/one &&
	git push testrepo main:refs/hidden/one &&
	git -C testrepo config transfer.hiderefs refs/hidden &&
	check_push_result testrepo $the_commit hidden/one &&
 
	mk_child testrepo child &&
	git -C child config protocol.version 2 &&
 
	# make sure $the_commit does not exist here
	git -C child repack -a -d &&
	git -C child prune &&
	test_must_fail git -C child cat-file -t $the_commit &&
 
	# fetching the hidden object succeeds by default
	# NEEDSWORK: should this match the v0 behavior instead?
	git -C child fetch -v ../testrepo $the_commit:refs/heads/copy
'
 
for configallowtipsha1inwant in true false
do
	test_expect_success "shallow fetch reachable SHA1 (but not a ref), allowtipsha1inwant=$configallowtipsha1inwant" '
		mk_empty testrepo &&
		(
			cd testrepo &&
			git config uploadpack.allowtipsha1inwant $configallowtipsha1inwant &&
			git commit --allow-empty -m foo &&
			git commit --allow-empty -m bar
		) &&
		SHA1=$(git --git-dir=testrepo/.git rev-parse HEAD^) &&
		mk_empty shallow &&
		(
			cd shallow &&
			# Some protocol versions (e.g. 2) support fetching
			# unadvertised objects, so restrict this test to v0.
			test_must_fail env GIT_TEST_PROTOCOL_VERSION=0 \
				git fetch --depth=1 ../testrepo/.git $SHA1 &&
			git --git-dir=../testrepo/.git config uploadpack.allowreachablesha1inwant true &&
			git fetch --depth=1 ../testrepo/.git $SHA1 &&
			git cat-file commit $SHA1
		)
	'
 
	test_expect_success "deny fetch unreachable SHA1, allowtipsha1inwant=$configallowtipsha1inwant" '
		mk_empty testrepo &&
		(
			cd testrepo &&
			git config uploadpack.allowtipsha1inwant $configallowtipsha1inwant &&
			git commit --allow-empty -m foo &&
			git commit --allow-empty -m bar &&
			git commit --allow-empty -m xyz
		) &&
		SHA1_1=$(git --git-dir=testrepo/.git rev-parse HEAD^^) &&
		SHA1_2=$(git --git-dir=testrepo/.git rev-parse HEAD^) &&
		SHA1_3=$(git --git-dir=testrepo/.git rev-parse HEAD) &&
		(
			cd testrepo &&
			git reset --hard $SHA1_2 &&
			git cat-file commit $SHA1_1 &&
			git cat-file commit $SHA1_3
		) &&
		mk_empty shallow &&
		(
			cd shallow &&
			# Some protocol versions (e.g. 2) support fetching
			# unadvertised objects, so restrict this test to v0.
			test_must_fail env GIT_TEST_PROTOCOL_VERSION=0 \
				git fetch ../testrepo/.git $SHA1_3 &&
			test_must_fail env GIT_TEST_PROTOCOL_VERSION=0 \
				git fetch ../testrepo/.git $SHA1_1 &&
			git --git-dir=../testrepo/.git config uploadpack.allowreachablesha1inwant true &&
			git fetch ../testrepo/.git $SHA1_1 &&
			git cat-file commit $SHA1_1 &&
			test_must_fail git cat-file commit $SHA1_2 &&
			git fetch ../testrepo/.git $SHA1_2 &&
			git cat-file commit $SHA1_2 &&
			test_must_fail env GIT_TEST_PROTOCOL_VERSION=0 \
				git fetch ../testrepo/.git $SHA1_3 2>err &&
			# ideally we would insist this be on a "remote error:"
			# line, but it is racy; see the commit message
			test_i18ngrep "not our ref.*$SHA1_3\$" err
		)
	'
done
 
test_expect_success 'fetch follows tags by default' '
	mk_test testrepo heads/main &&
	rm -fr src dst &&
	git init src &&
	(
		cd src &&
		git pull ../testrepo main &&
		git tag -m "annotated" tag &&
		git for-each-ref >tmp1 &&
		(
			cat tmp1
			sed -n "s|refs/heads/main$|refs/remotes/origin/main|p" tmp1
		) |
		sort -k 3 >../expect
	) &&
	git init dst &&
	(
		cd dst &&
		git remote add origin ../src &&
		git config branch.main.remote origin &&
		git config branch.main.merge refs/heads/main &&
		git pull &&
		git for-each-ref >../actual
	) &&
	test_cmp expect actual
'
 
test_expect_success 'peeled advertisements are not considered ref tips' '
	mk_empty testrepo &&
	git -C testrepo commit --allow-empty -m one &&
	git -C testrepo commit --allow-empty -m two &&
	git -C testrepo tag -m foo mytag HEAD^ &&
	oid=$(git -C testrepo rev-parse mytag^{commit}) &&
	test_must_fail env GIT_TEST_PROTOCOL_VERSION=0 \
		git fetch testrepo $oid 2>err &&
	test_i18ngrep "Server does not allow request for unadvertised object" err
'
 
test_expect_success 'pushing a specific ref applies remote.$name.push as refmap' '
	mk_test testrepo heads/main &&
	rm -fr src dst &&
	git init src &&
	git init --bare dst &&
	(
		cd src &&
		git pull ../testrepo main &&
		git branch next &&
		git config remote.dst.url ../dst &&
		git config remote.dst.push "+refs/heads/*:refs/remotes/src/*" &&
		git push dst main &&
		git show-ref refs/heads/main |
		sed -e "s|refs/heads/|refs/remotes/src/|" >../dst/expect
	) &&
	(
		cd dst &&
		test_must_fail git show-ref refs/heads/next &&
		test_must_fail git show-ref refs/heads/main &&
		git show-ref refs/remotes/src/main >actual
	) &&
	test_cmp dst/expect dst/actual
'
 
test_expect_success 'with no remote.$name.push, it is not used as refmap' '
	mk_test testrepo heads/main &&
	rm -fr src dst &&
	git init src &&
	git init --bare dst &&
	(
		cd src &&
		git pull ../testrepo main &&
		git branch next &&
		git config remote.dst.url ../dst &&
		git config push.default matching &&
		git push dst main &&
		git show-ref refs/heads/main >../dst/expect
	) &&
	(
		cd dst &&
		test_must_fail git show-ref refs/heads/next &&
		git show-ref refs/heads/main >actual
	) &&
	test_cmp dst/expect dst/actual
'
 
test_expect_success 'with no remote.$name.push, upstream mapping is used' '
	mk_test testrepo heads/main &&
	rm -fr src dst &&
	git init src &&
	git init --bare dst &&
	(
		cd src &&
		git pull ../testrepo main &&
		git branch next &&
		git config remote.dst.url ../dst &&
		git config remote.dst.fetch "+refs/heads/*:refs/remotes/dst/*" &&
		git config push.default upstream &&
 
		git config branch.main.merge refs/heads/trunk &&
		git config branch.main.remote dst &&
 
		git push dst main &&
		git show-ref refs/heads/main |
		sed -e "s|refs/heads/main|refs/heads/trunk|" >../dst/expect
	) &&
	(
		cd dst &&
		test_must_fail git show-ref refs/heads/main &&
		test_must_fail git show-ref refs/heads/next &&
		git show-ref refs/heads/trunk >actual
	) &&
	test_cmp dst/expect dst/actual
'
 
test_expect_success 'push does not follow tags by default' '
	mk_test testrepo heads/main &&
	rm -fr src dst &&
	git init src &&
	git init --bare dst &&
	(
		cd src &&
		git pull ../testrepo main &&
		git tag -m "annotated" tag &&
		git checkout -b another &&
		git commit --allow-empty -m "future commit" &&
		git tag -m "future" future &&
		git checkout main &&
		git for-each-ref refs/heads/main >../expect &&
		git push ../dst main
	) &&
	(
		cd dst &&
		git for-each-ref >../actual
	) &&
	test_cmp expect actual
'
 
test_expect_success 'push --follow-tags only pushes relevant tags' '
	mk_test testrepo heads/main &&
	rm -fr src dst &&
	git init src &&
	git init --bare dst &&
	(
		cd src &&
		git pull ../testrepo main &&
		git tag -m "annotated" tag &&
		git checkout -b another &&
		git commit --allow-empty -m "future commit" &&
		git tag -m "future" future &&
		git checkout main &&
		git for-each-ref refs/heads/main refs/tags/tag >../expect &&
		git push --follow-tags ../dst main
	) &&
	(
		cd dst &&
		git for-each-ref >../actual
	) &&
	test_cmp expect actual
'
 
test_expect_success 'push --no-thin must produce non-thin pack' '
	cat >>path1 <<\EOF &&
keep base version of path1 big enough, compared to the new changes
later, in order to pass size heuristics in
builtin/pack-objects.c:try_delta()
EOF
	git commit -am initial &&
	git init no-thin &&
	git --git-dir=no-thin/.git config receive.unpacklimit 0 &&
	git push no-thin/.git refs/heads/main:refs/heads/foo &&
	echo modified >> path1 &&
	git commit -am modified &&
	git repack -adf &&
	rcvpck="git receive-pack --reject-thin-pack-for-testing" &&
	git push --no-thin --receive-pack="$rcvpck" no-thin/.git refs/heads/main:refs/heads/foo
'
 
test_expect_success 'pushing a tag pushes the tagged object' '
	rm -rf dst.git &&
	blob=$(echo unreferenced | git hash-object -w --stdin) &&
	git tag -m foo tag-of-blob $blob &&
	git init --bare dst.git &&
	git push dst.git tag-of-blob &&
	# the receiving index-pack should have noticed
	# any problems, but we double check
	echo unreferenced >expect &&
	git --git-dir=dst.git cat-file blob tag-of-blob >actual &&
	test_cmp expect actual
'
 
test_expect_success 'push into bare respects core.logallrefupdates' '
	rm -rf dst.git &&
	git init --bare dst.git &&
	git -C dst.git config core.logallrefupdates true &&
 
	# double push to test both with and without
	# the actual pack transfer
	git push dst.git main:one &&
	echo "one@{0} push" >expect &&
	git -C dst.git log -g --format="%gd %gs" one >actual &&
	test_cmp expect actual &&
 
	git push dst.git main:two &&
	echo "two@{0} push" >expect &&
	git -C dst.git log -g --format="%gd %gs" two >actual &&
	test_cmp expect actual
'
 
test_expect_success 'fetch into bare respects core.logallrefupdates' '
	rm -rf dst.git &&
	git init --bare dst.git &&
	(
		cd dst.git &&
		git config core.logallrefupdates true &&
 
		# as above, we double-fetch to test both
		# with and without pack transfer
		git fetch .. main:one &&
		echo "one@{0} fetch .. main:one: storing head" >expect &&
		git log -g --format="%gd %gs" one >actual &&
		test_cmp expect actual &&
 
		git fetch .. main:two &&
		echo "two@{0} fetch .. main:two: storing head" >expect &&
		git log -g --format="%gd %gs" two >actual &&
		test_cmp expect actual
	)
'
 
test_expect_success 'receive.denyCurrentBranch = updateInstead' '
	git push testrepo main &&
	(
		cd testrepo &&
		git reset --hard &&
		git config receive.denyCurrentBranch updateInstead
	) &&
	test_commit third path2 &&
 
	# Try pushing into a repository with pristine working tree
	git push testrepo main &&
	(
		cd testrepo &&
		git update-index -q --refresh &&
		git diff-files --quiet -- &&
		git diff-index --quiet --cached HEAD -- &&
		test third = "$(cat path2)" &&
		test $(git -C .. rev-parse HEAD) = $(git rev-parse HEAD)
	) &&
 
	# Try pushing into a repository with working tree needing a refresh
	(
		cd testrepo &&
		git reset --hard HEAD^ &&
		test $(git -C .. rev-parse HEAD^) = $(git rev-parse HEAD) &&
		test-tool chmtime +100 path1
	) &&
	git push testrepo main &&
	(
		cd testrepo &&
		git update-index -q --refresh &&
		git diff-files --quiet -- &&
		git diff-index --quiet --cached HEAD -- &&
		test_cmp ../path1 path1 &&
		test third = "$(cat path2)" &&
		test $(git -C .. rev-parse HEAD) = $(git rev-parse HEAD)
	) &&
 
	# Update what is to be pushed
	test_commit fourth path2 &&
 
	# Try pushing into a repository with a dirty working tree
	# (1) the working tree updated
	(
		cd testrepo &&
		echo changed >path1
	) &&
	test_must_fail git push testrepo main &&
	(
		cd testrepo &&
		test $(git -C .. rev-parse HEAD^) = $(git rev-parse HEAD) &&
		git diff --quiet --cached &&
		test changed = "$(cat path1)"
	) &&
 
	# (2) the index updated
	(
		cd testrepo &&
		echo changed >path1 &&
		git add path1
	) &&
	test_must_fail git push testrepo main &&
	(
		cd testrepo &&
		test $(git -C .. rev-parse HEAD^) = $(git rev-parse HEAD) &&
		git diff --quiet &&
		test changed = "$(cat path1)"
	) &&
 
	# Introduce a new file in the update
	test_commit fifth path3 &&
 
	# (3) the working tree has an untracked file that would interfere
	(
		cd testrepo &&
		git reset --hard &&
		echo changed >path3
	) &&
	test_must_fail git push testrepo main &&
	(
		cd testrepo &&
		test $(git -C .. rev-parse HEAD^^) = $(git rev-parse HEAD) &&
		git diff --quiet &&
		git diff --quiet --cached &&
		test changed = "$(cat path3)"
	) &&
 
	# (4) the target changes to what gets pushed but it still is a change
	(
		cd testrepo &&
		git reset --hard &&
		echo fifth >path3 &&
		git add path3
	) &&
	test_must_fail git push testrepo main &&
	(
		cd testrepo &&
		test $(git -C .. rev-parse HEAD^^) = $(git rev-parse HEAD) &&
		git diff --quiet &&
		test fifth = "$(cat path3)"
	) &&
 
	# (5) push into void
	rm -fr void &&
	git init void &&
	(
		cd void &&
		git config receive.denyCurrentBranch updateInstead
	) &&
	git push void main &&
	(
		cd void &&
		test $(git -C .. rev-parse main) = $(git rev-parse HEAD) &&
		git diff --quiet &&
		git diff --cached --quiet
	) &&
 
	# (6) updateInstead intervened by fast-forward check
	test_must_fail git push void main^:main &&
	test $(git -C void rev-parse HEAD) = $(git rev-parse main) &&
	git -C void diff --quiet &&
	git -C void diff --cached --quiet
'
 
test_expect_success 'updateInstead with push-to-checkout hook' '
	rm -fr testrepo &&
	git init testrepo &&
	(
		cd testrepo &&
		git pull .. main &&
		git reset --hard HEAD^^ &&
		git tag initial &&
		git config receive.denyCurrentBranch updateInstead &&
		write_script .git/hooks/push-to-checkout <<-\EOF
		echo >&2 updating from $(git rev-parse HEAD)
		echo >&2 updating to "$1"
 
		git update-index -q --refresh &&
		git read-tree -u -m HEAD "$1" || {
			status=$?
			echo >&2 read-tree failed
			exit $status
		}
		EOF
	) &&
 
	# Try pushing into a pristine
	git push testrepo main &&
	(
		cd testrepo &&
		git diff --quiet &&
		git diff HEAD --quiet &&
		test $(git -C .. rev-parse HEAD) = $(git rev-parse HEAD)
	) &&
 
	# Try pushing into a repository with conflicting change
	(
		cd testrepo &&
		git reset --hard initial &&
		echo conflicting >path2
	) &&
	test_must_fail git push testrepo main &&
	(
		cd testrepo &&
		test $(git rev-parse initial) = $(git rev-parse HEAD) &&
		test conflicting = "$(cat path2)" &&
		git diff-index --quiet --cached HEAD
	) &&
 
	# Try pushing into a repository with unrelated change
	(
		cd testrepo &&
		git reset --hard initial &&
		echo unrelated >path1 &&
		echo irrelevant >path5 &&
		git add path5
	) &&
	git push testrepo main &&
	(
		cd testrepo &&
		test "$(cat path1)" = unrelated &&
		test "$(cat path5)" = irrelevant &&
		test "$(git diff --name-only --cached HEAD)" = path5 &&
		test $(git -C .. rev-parse HEAD) = $(git rev-parse HEAD)
	) &&
 
	# push into void
	rm -fr void &&
	git init void &&
	(
		cd void &&
		git config receive.denyCurrentBranch updateInstead &&
		write_script .git/hooks/push-to-checkout <<-\EOF
		if git rev-parse --quiet --verify HEAD
		then
			has_head=yes
			echo >&2 updating from $(git rev-parse HEAD)
		else
			has_head=no
			echo >&2 pushing into void
		fi
		echo >&2 updating to "$1"
 
		git update-index -q --refresh &&
		case "$has_head" in
		yes)
			git read-tree -u -m HEAD "$1" ;;
		no)
			git read-tree -u -m "$1" ;;
		esac || {
			status=$?
			echo >&2 read-tree failed
			exit $status
		}
		EOF
	) &&
 
	git push void main &&
	(
		cd void &&
		git diff --quiet &&
		git diff --cached --quiet &&
		test $(git -C .. rev-parse HEAD) = $(git rev-parse HEAD)
	)
'
 
test_expect_success 'denyCurrentBranch and worktrees' '
	git worktree add new-wt &&
	git clone . cloned &&
	test_commit -C cloned first &&
	test_config receive.denyCurrentBranch refuse &&
	test_must_fail git -C cloned push origin HEAD:new-wt &&
	test_config receive.denyCurrentBranch updateInstead &&
	git -C cloned push origin HEAD:new-wt &&
	test_must_fail git -C cloned push --delete origin new-wt
'
 
test_done