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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
'

. ./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/master) &&

	>path2 &&
	git add path2 &&
	test_tick &&
	git commit -a -m second &&
	the_commit=$(git show-ref -s --verify refs/heads/master)

'

test_expect_success 'fetch without wildcard' '
	mk_empty testrepo &&
	(
		cd testrepo &&
		git fetch .. refs/heads/master:refs/remotes/origin/master &&

		echo "$the_commit commit	refs/remotes/origin/master" >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/master" >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/master" >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/master" >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/master:refs/remotes/origin/master &&
	(
		cd testrepo &&
		echo "$the_commit commit	refs/remotes/origin/master" >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/master" >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/master:refs/remotes/origin/master &&
	(
		cd testrepo &&
		echo "$the_commit commit	refs/remotes/origin/master" >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/master:refs/remotes/origin/master &&
	(
		cd testrepo &&
		echo "$the_commit commit	refs/remotes/origin/master" >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/master:refs/remotes/origin/master &&
	(
		cd testrepo &&
		echo "$the_commit commit	refs/remotes/origin/master" >expect &&
		git for-each-ref refs/remotes/origin >actual &&
		test_cmp expect actual
	)
'

test_expect_success 'push with matching heads' '

	mk_test testrepo heads/master &&
	git push testrepo : &&
	check_push_result testrepo $the_commit heads/master

'

test_expect_success 'push with matching heads on the command line' '

	mk_test testrepo heads/master &&
	git push testrepo : &&
	check_push_result testrepo $the_commit heads/master

'

test_expect_success 'failed (non-fast-forward) push with matching heads' '

	mk_test testrepo heads/master &&
	git push testrepo : &&
	git commit --amend -massaged &&
	test_must_fail git push testrepo &&
	check_push_result testrepo $the_commit heads/master &&
	git reset --hard $the_commit

'

test_expect_success 'push --force with matching heads' '

	mk_test testrepo heads/master &&
	git push testrepo : &&
	git commit --amend -massaged &&
	git push --force testrepo : &&
	! check_push_result testrepo $the_commit heads/master &&
	git reset --hard $the_commit

'

test_expect_success 'push with matching heads and forced update' '

	mk_test testrepo heads/master &&
	git push testrepo : &&
	git commit --amend -massaged &&
	git push testrepo +: &&
	! check_push_result testrepo $the_commit heads/master &&
	git reset --hard $the_commit

'

test_expect_success 'push with no ambiguity (1)' '

	mk_test testrepo heads/master &&
	git push testrepo master:master &&
	check_push_result testrepo $the_commit heads/master

'

test_expect_success 'push with no ambiguity (2)' '

	mk_test testrepo remotes/origin/master &&
	git push testrepo master:origin/master &&
	check_push_result testrepo $the_commit remotes/origin/master

'

test_expect_success 'push with colon-less refspec, no ambiguity' '

	mk_test testrepo heads/master heads/t/master &&
	git branch -f t/master master &&
	git push testrepo master &&
	check_push_result testrepo $the_commit heads/master &&
	check_push_result testrepo $the_first_commit heads/t/master

'

test_expect_success 'push with weak ambiguity (1)' '

	mk_test testrepo heads/master remotes/origin/master &&
	git push testrepo master:master &&
	check_push_result testrepo $the_commit heads/master &&
	check_push_result testrepo $the_first_commit remotes/origin/master

'

test_expect_success 'push with weak ambiguity (2)' '

	mk_test testrepo heads/master remotes/origin/master remotes/another/master &&
	git push testrepo master:master &&
	check_push_result testrepo $the_commit heads/master &&
	check_push_result testrepo $the_first_commit remotes/origin/master remotes/another/master

'

test_expect_success 'push with ambiguity' '

	mk_test testrepo heads/frotz tags/frotz &&
	test_must_fail git push testrepo master: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 master &&
	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 master &&
	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 master: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 master):foo

'

test_expect_success 'push ref expression with non-existent, incomplete dest' '

	mk_test testrepo &&
	test_must_fail git push testrepo master^:branch

'

test_expect_success 'push with HEAD' '

	mk_test testrepo heads/master &&
	git checkout master &&
	git push testrepo HEAD &&
	check_push_result testrepo $the_commit heads/master

'

test_expect_success 'push with HEAD nonexisting at remote' '

	mk_test testrepo heads/master &&
	git checkout -b local master &&
	git push testrepo HEAD &&
	check_push_result testrepo $the_commit heads/local
'

test_expect_success 'push with +HEAD' '

	mk_test testrepo heads/master &&
	git checkout master &&
	git branch -D local &&
	git checkout -b local &&
	git push testrepo master local &&
	check_push_result testrepo $the_commit heads/master &&
	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 master &&
	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 master &&
	git branch -f local $the_commit &&
	(
		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.master.remote there &&
	git push &&
	check_push_result testrepo $the_commit heads/master &&
	check_push_result testrepo $the_first_commit heads/local
'

test_expect_success 'push with remote.pushdefault' '
	mk_test up_repo heads/master &&
	mk_test down_repo heads/master &&
	test_config remote.up.url up_repo &&
	test_config remote.down.url down_repo &&
	test_config branch.master.remote up &&
	test_config remote.pushdefault down &&
	test_config push.default matching &&
	git push &&
	check_push_result up_repo $the_first_commit heads/master &&
	check_push_result down_repo $the_commit heads/master
'

test_expect_success 'push with config remote.*.pushurl' '

	mk_test testrepo heads/master &&
	git checkout master &&
	test_config remote.there.url test2repo &&
	test_config remote.there.pushurl testrepo &&
	git push there : &&
	check_push_result testrepo $the_commit heads/master
'

test_expect_success 'push with config branch.*.pushremote' '
	mk_test up_repo heads/master &&
	mk_test side_repo heads/master &&
	mk_test down_repo heads/master &&
	test_config remote.up.url up_repo &&
	test_config remote.pushdefault side_repo &&
	test_config remote.down.url down_repo &&
	test_config branch.master.remote up &&
	test_config branch.master.pushremote down &&
	test_config push.default matching &&
	git push &&
	check_push_result up_repo $the_first_commit heads/master &&
	check_push_result side_repo $the_first_commit heads/master &&
	check_push_result down_repo $the_commit heads/master
'

test_expect_success 'branch.*.pushremote config order is irrelevant' '
	mk_test one_repo heads/master &&
	mk_test two_repo heads/master &&
	test_config remote.one.url one_repo &&
	test_config remote.two.url two_repo &&
	test_config branch.master.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/master &&
	check_push_result two_repo $the_commit heads/master
'

test_expect_success 'push with dry-run' '

	mk_test testrepo heads/master &&
	old_commit=$(git -C testrepo show-ref -s --verify refs/heads/master) &&
	git push --dry-run testrepo : &&
	check_push_result testrepo $old_commit heads/master
'

test_expect_success 'push updates local refs' '

	mk_test testrepo heads/master &&
	mk_child testrepo child &&
	(
		cd child &&
		git pull .. master &&
		git push &&
		test $(git rev-parse master) = \
			$(git rev-parse remotes/origin/master)
	)

'

test_expect_success 'push updates up-to-date local refs' '

	mk_test testrepo heads/master &&
	mk_child testrepo child1 &&
	mk_child testrepo child2 &&
	(cd child1 && git pull .. master && git push) &&
	(
		cd child2 &&
		git pull ../child1 master &&
		git push &&
		test $(git rev-parse master) = \
			$(git rev-parse remotes/origin/master)
	)

'

test_expect_success 'push preserves up-to-date packed refs' '

	mk_test testrepo heads/master &&
	mk_child testrepo child &&
	(
		cd child &&
		git push &&
		! test -f .git/refs/remotes/origin/master
	)

'

test_expect_success 'push does not update local refs on failure' '

	mk_test testrepo heads/master &&
	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 .. master &&
		test_must_fail git push &&
		test $(git rev-parse master) != \
			$(git rev-parse remotes/origin/master)
	)

'

test_expect_success 'allow deleting an invalid remote ref' '

	mk_test testrepo heads/master &&
	rm -f testrepo/.git/objects/??/* &&
	git push testrepo :refs/heads/master &&
	(cd testrepo && test_must_fail git rev-parse --verify refs/heads/master)

'

test_expect_success 'pushing valid refs triggers post-receive and post-update hooks' '
	mk_test_with_hooks testrepo heads/master heads/next &&
	orgmaster=$(cd testrepo && git show-ref -s --verify refs/heads/master) &&
	newmaster=$(git show-ref -s --verify refs/heads/master) &&
	orgnext=$(cd testrepo && git show-ref -s --verify refs/heads/next) &&
	newnext=$ZERO_OID &&
	git push testrepo refs/heads/master:refs/heads/master :refs/heads/next &&
	(
		cd testrepo/.git &&
		cat >pre-receive.expect <<-EOF &&
		$orgmaster $newmaster refs/heads/master
		$orgnext $newnext refs/heads/next
		EOF

		cat >update.expect <<-EOF &&
		refs/heads/master $orgmaster $newmaster
		refs/heads/next $orgnext $newnext
		EOF

		cat >post-receive.expect <<-EOF &&
		$orgmaster $newmaster refs/heads/master
		$orgnext $newnext refs/heads/next
		EOF

		cat >post-update.expect <<-EOF &&
		refs/heads/master
		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/master &&
	rm -f testrepo/.git/objects/??/* &&
	git push testrepo :refs/heads/master &&
	(
		cd testrepo/.git &&
		cat >pre-receive.expect <<-EOF &&
		$ZERO_OID $ZERO_OID refs/heads/master
		EOF

		cat >update.expect <<-EOF &&
		refs/heads/master $ZERO_OID $ZERO_OID
		EOF

		cat >post-receive.expect <<-EOF &&
		$ZERO_OID $ZERO_OID refs/heads/master
		EOF

		cat >post-update.expect <<-EOF &&
		refs/heads/master
		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/master &&
	orgmaster=$(cd testrepo && git show-ref -s --verify refs/heads/master) &&
	newmaster=$(git show-ref -s --verify refs/heads/master) &&
	git push testrepo master :refs/heads/nonexistent &&
	(
		cd testrepo/.git &&
		cat >pre-receive.expect <<-EOF &&
		$orgmaster $newmaster refs/heads/master
		$ZERO_OID $ZERO_OID refs/heads/nonexistent
		EOF

		cat >update.expect <<-EOF &&
		refs/heads/master $orgmaster $newmaster
		refs/heads/nonexistent $ZERO_OID $ZERO_OID
		EOF

		cat >post-receive.expect <<-EOF &&
		$orgmaster $newmaster refs/heads/master
		EOF

		cat >post-update.expect <<-EOF &&
		refs/heads/master
		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/master &&
	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/master heads/next heads/pu &&
	orgmaster=$(cd testrepo && git show-ref -s --verify refs/heads/master) &&
	newmaster=$(git show-ref -s --verify refs/heads/master) &&
	orgnext=$(cd testrepo && git show-ref -s --verify refs/heads/next) &&
	newnext=$ZERO_OID &&
	orgpu=$(cd testrepo && git show-ref -s --verify refs/heads/pu) &&
	newpu=$(git show-ref -s --verify refs/heads/master) &&
	git push testrepo refs/heads/master:refs/heads/master \
	    refs/heads/master:refs/heads/pu :refs/heads/next \
	    :refs/heads/nonexistent &&
	(
		cd testrepo/.git &&
		cat >pre-receive.expect <<-EOF &&
		$orgmaster $newmaster refs/heads/master
		$orgnext $newnext refs/heads/next
		$orgpu $newpu refs/heads/pu
		$ZERO_OID $ZERO_OID refs/heads/nonexistent
		EOF

		cat >update.expect <<-EOF &&
		refs/heads/master $orgmaster $newmaster
		refs/heads/next $orgnext $newnext
		refs/heads/pu $orgpu $newpu
		refs/heads/nonexistent $ZERO_OID $ZERO_OID
		EOF

		cat >post-receive.expect <<-EOF &&
		$orgmaster $newmaster refs/heads/master
		$orgnext $newnext refs/heads/next
		$orgpu $newpu refs/heads/pu
		EOF

		cat >post-update.expect <<-EOF &&
		refs/heads/master
		refs/heads/next
		refs/heads/pu
		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/master &&
	(cd testrepo && git config receive.denyDeleteCurrent warn) &&
	git push testrepo --delete master &&
	(cd testrepo && test_must_fail git rev-parse --verify refs/heads/master)
'

test_expect_success 'allow deleting a tag using --delete' '
	mk_test testrepo heads/master &&
	git tag -a -m dummy_message deltag heads/master &&
	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/master &&
	test_must_fail git push testrepo --delete
'

test_expect_success 'push --delete refuses src:dest refspecs' '
	mk_test testrepo heads/master &&
	test_must_fail git push testrepo --delete master:foo
'

test_expect_success 'warn on push to HEAD of non-bare repository' '
	mk_test testrepo heads/master &&
	(
		cd testrepo &&
		git checkout master &&
		git config receive.denyCurrentBranch warn
	) &&
	git push testrepo master 2>stderr &&
	grep "warning: updating the current branch" stderr
'

test_expect_success 'deny push to HEAD of non-bare repository' '
	mk_test testrepo heads/master &&
	(
		cd testrepo &&
		git checkout master &&
		git config receive.denyCurrentBranch true
	) &&
	test_must_fail git push testrepo master
'

test_expect_success 'allow push to HEAD of bare repository (bare)' '
	mk_test testrepo heads/master &&
	(
		cd testrepo &&
		git checkout master &&
		git config receive.denyCurrentBranch true &&
		git config core.bare true
	) &&
	git push testrepo master 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/master &&
	(
		cd testrepo &&
		git checkout master &&
		git config receive.denyCurrentBranch false
	) &&
	git push testrepo master 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 master
'

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 master
'

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/master" >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 master
'

test_expect_success 'push into aliased refs (consistent)' '
	mk_test testrepo heads/master &&
	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/master &&
	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/master &&
		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/master &&
		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/master:refs/remotes/origin/master	[new branch]"  &&
	echo >>.git/foo "Done" &&
	git push >.git/bar --porcelain  testrepo refs/heads/master:refs/remotes/origin/master &&
	(
		cd testrepo &&
		echo "$the_commit commit	refs/remotes/origin/master" >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/master:refs/remotes/origin/master &&
	! grep -q Done .git/bar
'

test_expect_success 'push --porcelain rejected' '
	mk_empty testrepo &&
	git push testrepo refs/heads/master:refs/remotes/origin/master &&
	(cd testrepo &&
		git reset --hard origin/master^ &&
		git config receive.denyCurrentBranch true) &&

	echo >.git/foo  "To testrepo"  &&
	echo >>.git/foo "!	refs/heads/master:refs/heads/master	[remote rejected] (branch is currently checked out)" &&

	test_must_fail git push >.git/bar --porcelain  testrepo refs/heads/master:refs/heads/master &&
	test_cmp .git/foo .git/bar
'

test_expect_success 'push --porcelain --dry-run rejected' '
	mk_empty testrepo &&
	git push testrepo refs/heads/master:refs/remotes/origin/master &&
	(cd testrepo &&
		git reset --hard origin/master &&
		git config receive.denyCurrentBranch true) &&

	echo >.git/foo  "To testrepo"  &&
	echo >>.git/foo "!	refs/heads/master^:refs/heads/master	[rejected] (non-fast-forward)" &&
	echo >>.git/foo "Done" &&

	test_must_fail git push >.git/bar --porcelain  --dry-run testrepo refs/heads/master^:refs/heads/master &&
	test_cmp .git/foo .git/bar
'

test_expect_success 'push --prune' '
	mk_test testrepo heads/master heads/second heads/foo heads/bar &&
	git push --prune testrepo : &&
	check_push_result testrepo $the_commit heads/master &&
	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/master tmp/second tmp/foo tmp/bar &&
	git push --prune testrepo "refs/heads/*:refs/tmp/*" &&
	check_push_result testrepo $the_commit tmp/master &&
	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/master hidden/one hidden/two hidden/three &&
		(
			cd testrepo &&
			git config $configsection.hiderefs refs/hidden
		) &&

		# push to unhidden ref succeeds normally
		git push testrepo master:refs/heads/master &&
		check_push_result testrepo $the_commit heads/master &&

		# push to update a hidden ref should fail
		test_must_fail git push testrepo master: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/master hidden/one &&
	git push testrepo master: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 &&

		# fetching the hidden object should fail by default
		test_must_fail 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 master: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/master hidden/one &&
	git push testrepo master: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 &&
			test_must_fail 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 &&
			test_must_fail git fetch ../testrepo/.git $SHA1_3 &&
			test_must_fail 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 git fetch ../testrepo/.git $SHA1_3 2>err &&
			test_i18ngrep "remote error:.*not our ref.*$SHA1_3\$" err
		)
	'
done

test_expect_success 'fetch follows tags by default' '
	mk_test testrepo heads/master &&
	rm -fr src dst &&
	git init src &&
	(
		cd src &&
		git pull ../testrepo master &&
		git tag -m "annotated" tag &&
		git for-each-ref >tmp1 &&
		(
			cat tmp1
			sed -n "s|refs/heads/master$|refs/remotes/origin/master|p" tmp1
		) |
		sort -k 3 >../expect
	) &&
	git init dst &&
	(
		cd dst &&
		git remote add origin ../src &&
		git config branch.master.remote origin &&
		git config branch.master.merge refs/heads/master &&
		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= \
		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/master &&
	rm -fr src dst &&
	git init src &&
	git init --bare dst &&
	(
		cd src &&
		git pull ../testrepo master &&
		git branch next &&
		git config remote.dst.url ../dst &&
		git config remote.dst.push "+refs/heads/*:refs/remotes/src/*" &&
		git push dst master &&
		git show-ref refs/heads/master |
		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/master &&
		git show-ref refs/remotes/src/master >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/master &&
	rm -fr src dst &&
	git init src &&
	git init --bare dst &&
	(
		cd src &&
		git pull ../testrepo master &&
		git branch next &&
		git config remote.dst.url ../dst &&
		git config push.default matching &&
		git push dst master &&
		git show-ref refs/heads/master >../dst/expect
	) &&
	(
		cd dst &&
		test_must_fail git show-ref refs/heads/next &&
		git show-ref refs/heads/master >actual
	) &&
	test_cmp dst/expect dst/actual
'

test_expect_success 'with no remote.$name.push, upstream mapping is used' '
	mk_test testrepo heads/master &&
	rm -fr src dst &&
	git init src &&
	git init --bare dst &&
	(
		cd src &&
		git pull ../testrepo master &&
		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.master.merge refs/heads/trunk &&
		git config branch.master.remote dst &&

		git push dst master &&
		git show-ref refs/heads/master |
		sed -e "s|refs/heads/master|refs/heads/trunk|" >../dst/expect
	) &&
	(
		cd dst &&
		test_must_fail git show-ref refs/heads/master &&
		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/master &&
	rm -fr src dst &&
	git init src &&
	git init --bare dst &&
	(
		cd src &&
		git pull ../testrepo master &&
		git tag -m "annotated" tag &&
		git checkout -b another &&
		git commit --allow-empty -m "future commit" &&
		git tag -m "future" future &&
		git checkout master &&
		git for-each-ref refs/heads/master >../expect &&
		git push ../dst master
	) &&
	(
		cd dst &&
		git for-each-ref >../actual
	) &&
	test_cmp expect actual
'

test_expect_success 'push --follow-tag only pushes relevant tags' '
	mk_test testrepo heads/master &&
	rm -fr src dst &&
	git init src &&
	git init --bare dst &&
	(
		cd src &&
		git pull ../testrepo master &&
		git tag -m "annotated" tag &&
		git checkout -b another &&
		git commit --allow-empty -m "future commit" &&
		git tag -m "future" future &&
		git checkout master &&
		git for-each-ref refs/heads/master refs/tags/tag >../expect &&
		git push --follow-tag ../dst master
	) &&
	(
		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/master: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/master: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 master: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 master: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 .. master:one &&
		echo "one@{0} fetch .. master:one: storing head" >expect &&
		git log -g --format="%gd %gs" one >actual &&
		test_cmp expect actual &&

		git fetch .. master:two &&
		echo "two@{0} fetch .. master: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 master &&
	(
		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 master &&
	(
		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^) = $(git rev-parse HEAD) &&
		test-tool chmtime +100 path1
	) &&
	git push testrepo master &&
	(
		cd testrepo &&
		git update-index -q --refresh &&
		git diff-files --quiet -- &&
		git diff-index --quiet --cached HEAD -- &&
		test_cmp ../path1 path1 &&
		test third = "$(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 master &&
	(
		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 master &&
	(
		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 master &&
	(
		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 master &&
	(
		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 master &&
	(
		cd void &&
		test $(git -C .. rev-parse master) = $(git rev-parse HEAD) &&
		git diff --quiet &&
		git diff --cached --quiet
	) &&

	# (6) updateInstead intervened by fast-forward check
	test_must_fail git push void master^:master &&
	test $(git -C void rev-parse HEAD) = $(git rev-parse master) &&
	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 .. master &&
		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 master &&
	(
		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 master &&
	(
		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 master &&
	(
		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 master &&
	(
		cd void &&
		git diff --quiet &&
		git diff --cached --quiet &&
		test $(git -C .. rev-parse HEAD) = $(git rev-parse HEAD)
	)
'

test_done
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