[PATCH 6/7] t5533: test "push --lockref"

[Junio C Hamano <gitster@pobox.com>]

Prepare two repositories, src and dst, the latter of which is a
clone of the former (with tracking branches), and push from the
latter into the former, using --lockref=name (using tracking ref for
"name" when updating "name"), --lockref=name:value, --lockref=name:
(i.e. check creation), and --lockref (using tracking ref for
anything that we update).

Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 t/t5533-push-cas.sh | 176 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 176 insertions(+)
 create mode 100755 t/t5533-push-cas.sh

diff --git a/t/t5533-push-cas.sh b/t/t5533-push-cas.sh
new file mode 100755
index 0000000..c080467
--- /dev/null
+++ b/t/t5533-push-cas.sh
@@ -0,0 +1,176 @@
+#!/bin/sh
+
+test_description='compare & swap push force/delete safety'
+
+. ./test-lib.sh
+
+setup_srcdst_basic () {
+	rm -fr src dst &&
+	git clone --no-local . src &&
+	git clone --no-local src dst &&
+	(
+		cd src && git checkout HEAD^0
+	)
+}
+
+test_expect_success setup '
+	: create template repository
+	test_commit A &&
+	test_commit B &&
+	test_commit C
+'
+
+test_expect_success 'push to create (protected)' '
+	setup_srcdst_basic &&
+	(
+		cd dst &&
+		test_commit D &&
+		test_must_fail git push --lockref=master: origin master &&
+		test_must_fail git push --force --lockref=master: origin master
+	) &&
+	>expect &&
+	git ls-remote src refs/heads/naster >actual &&
+	test_cmp expect actual
+'
+
+test_expect_success 'push to create (allowed)' '
+	setup_srcdst_basic &&
+	(
+		cd dst &&
+		test_commit D &&
+		git push --lockref=naster: origin HEAD:naster
+	) &&
+	git ls-remote dst refs/heads/master |
+	sed -e "s/master/naster/" >expect &&
+	git ls-remote src refs/heads/naster >actual &&
+	test_cmp expect actual
+'
+
+test_expect_success 'push to update (protected)' '
+	setup_srcdst_basic &&
+	(
+		cd dst &&
+		test_commit D &&
+		test_must_fail git push --lockref=master:master origin master &&
+		test_must_fail git push --force --lockref=master:master origin master
+	) &&
+	git ls-remote . refs/heads/master >expect &&
+	git ls-remote src refs/heads/master >actual &&
+	test_cmp expect actual
+'
+
+test_expect_success 'push to update (protected, tracking)' '
+	setup_srcdst_basic &&
+	(
+		cd src &&
+		git checkout master &&
+		test_commit D &&
+		git checkout HEAD^0
+	) &&
+	git ls-remote src refs/heads/master >expect &&
+	(
+		cd dst &&
+		test_commit E &&
+		git ls-remote . refs/remotes/origin/master >expect &&
+		test_must_fail git push --lockref=master origin master &&
+		test_must_fail git push --force --lockref=master origin master &&
+		git ls-remote . refs/remotes/origin/master >actual &&
+		test_cmp expect actual
+	) &&
+	git ls-remote src refs/heads/master >actual &&
+	test_cmp expect actual
+'
+
+test_expect_success 'push to update (allowed)' '
+	setup_srcdst_basic &&
+	(
+		cd dst &&
+		test_commit D &&
+		git push --lockref=master:master^ origin master
+	) &&
+	git ls-remote dst refs/heads/master >expect &&
+	git ls-remote src refs/heads/master >actual &&
+	test_cmp expect actual
+'
+
+test_expect_success 'push to update (allowed, tracking)' '
+	setup_srcdst_basic &&
+	(
+		cd dst &&
+		test_commit D &&
+		git push --lockref=master origin master
+	) &&
+	git ls-remote dst refs/heads/master >expect &&
+	git ls-remote src refs/heads/master >actual &&
+	test_cmp expect actual
+'
+
+test_expect_success 'push to update (still rejected with non-ff check)' '
+	setup_srcdst_basic &&
+	git ls-remote src refs/heads/master >expect &&
+	(
+		cd dst &&
+		git reset --hard HEAD^ &&
+		test_commit D &&
+		test_must_fail git push --lockref=master origin master
+	) &&
+	git ls-remote src refs/heads/master >actual &&
+	test_cmp expect actual
+'
+
+test_expect_success 'push to delete (protected)' '
+	setup_srcdst_basic &&
+	git ls-remote src refs/heads/master >expect &&
+	(
+		cd dst &&
+		test_must_fail git push --lockref=master:master^ origin :master &&
+		test_must_fail git push --force --lockref=master:master^ origin :master
+	) &&
+	git ls-remote src refs/heads/master >actual &&
+	test_cmp expect actual
+'
+
+test_expect_success 'push to delete (allowed)' '
+	setup_srcdst_basic &&
+	(
+		cd dst &&
+		git push --lockref=master origin :master
+	) &&
+	>expect &&
+	git ls-remote src refs/heads/master >actual &&
+	test_cmp expect actual
+'
+
+test_expect_success 'cover everything with default lockref (protected)' '
+	setup_srcdst_basic &&
+	(
+		cd src &&
+		git branch naster master^
+	)
+	git ls-remote src refs/heads/\* >expect &&
+	(
+		cd dst &&
+		test_must_fail git push --lockref origin master master:naster
+	) &&
+	git ls-remote src refs/heads/\* >actual &&
+	test_cmp expect actual
+'
+
+test_expect_success 'cover everything with default lockref (allowed)' '
+	setup_srcdst_basic &&
+	(
+		cd src &&
+		git branch naster master^
+	)
+	(
+		cd dst &&
+		git fetch &&
+		git push --lockref origin master master:naster
+	) &&
+	git ls-remote dst refs/heads/master |
+	sed -e "s/master/naster/" >expect &&
+	git ls-remote src refs/heads/naster >actual &&
+	test_cmp expect actual
+'
+
+test_done
-- 
1.8.3.2-875-g76c723c