Squashed 'third_party/git/' content from commit cb71568594

git-subtree-dir: third_party/git
git-subtree-split: cb715685942260375e1eb8153b0768a376e4ece7

1 files changed, 259 insertions, 0 deletions

diff --git a/t/t5533-push-cas.sh b/t/t5533-push-cas.sh
new file mode 100755
index 000000000000..0b0eb1d0259f
--- /dev/null
+++ b/t/t5533-push-cas.sh
@@ -0,0 +1,259 @@
+#!/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 update (protected)' '
+	setup_srcdst_basic &&
+	(
+		cd dst &&
+		test_commit D &&
+		test_must_fail git push --force-with-lease=master:master origin master 2>err &&
+		grep "stale info" err
+	) &&
+	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, forced)' '
+	setup_srcdst_basic &&
+	(
+		cd dst &&
+		test_commit D &&
+		git push --force --force-with-lease=master:master origin master 2>err &&
+		grep "forced update" err
+	) &&
+	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 (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 --force-with-lease=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 (protected, tracking, forced)' '
+	setup_srcdst_basic &&
+	(
+		cd src &&
+		git checkout master &&
+		test_commit D &&
+		git checkout HEAD^0
+	) &&
+	(
+		cd dst &&
+		test_commit E &&
+		git ls-remote . refs/remotes/origin/master >expect &&
+		git push --force --force-with-lease=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)' '
+	setup_srcdst_basic &&
+	(
+		cd dst &&
+		test_commit D &&
+		git push --force-with-lease=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 --force-with-lease=master origin master 2>err &&
+		! grep "forced update" err
+	) &&
+	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 even though no-ff)' '
+	setup_srcdst_basic &&
+	(
+		cd dst &&
+		git reset --hard HEAD^ &&
+		test_commit D &&
+		git push --force-with-lease=master origin master 2>err &&
+		grep "forced update" err
+	) &&
+	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 delete (protected)' '
+	setup_srcdst_basic &&
+	git ls-remote src refs/heads/master >expect &&
+	(
+		cd dst &&
+		test_must_fail git push --force-with-lease=master:master^ origin :master
+	) &&
+	git ls-remote src refs/heads/master >actual &&
+	test_cmp expect actual
+'
+
+test_expect_success 'push to delete (protected, forced)' '
+	setup_srcdst_basic &&
+	(
+		cd dst &&
+		git push --force --force-with-lease=master:master^ origin :master
+	) &&
+	git ls-remote src refs/heads/master >actual &&
+	test_must_be_empty actual
+'
+
+test_expect_success 'push to delete (allowed)' '
+	setup_srcdst_basic &&
+	(
+		cd dst &&
+		git push --force-with-lease=master origin :master 2>err &&
+		grep deleted err
+	) &&
+	git ls-remote src refs/heads/master >actual &&
+	test_must_be_empty actual
+'
+
+test_expect_success 'cover everything with default force-with-lease (protected)' '
+	setup_srcdst_basic &&
+	(
+		cd src &&
+		git branch naster master^
+	) &&
+	git ls-remote src refs/heads/\* >expect &&
+	(
+		cd dst &&
+		test_must_fail git push --force-with-lease origin master master:naster
+	) &&
+	git ls-remote src refs/heads/\* >actual &&
+	test_cmp expect actual
+'
+
+test_expect_success 'cover everything with default force-with-lease (allowed)' '
+	setup_srcdst_basic &&
+	(
+		cd src &&
+		git branch naster master^
+	) &&
+	(
+		cd dst &&
+		git fetch &&
+		git push --force-with-lease 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_expect_success 'new branch covered by force-with-lease' '
+	setup_srcdst_basic &&
+	(
+		cd dst &&
+		git branch branch master &&
+		git push --force-with-lease=branch origin branch
+	) &&
+	git ls-remote dst refs/heads/branch >expect &&
+	git ls-remote src refs/heads/branch >actual &&
+	test_cmp expect actual
+'
+
+test_expect_success 'new branch covered by force-with-lease (explicit)' '
+	setup_srcdst_basic &&
+	(
+		cd dst &&
+		git branch branch master &&
+		git push --force-with-lease=branch: origin branch
+	) &&
+	git ls-remote dst refs/heads/branch >expect &&
+	git ls-remote src refs/heads/branch >actual &&
+	test_cmp expect actual
+'
+
+test_expect_success 'new branch already exists' '
+	setup_srcdst_basic &&
+	(
+		cd src &&
+		git checkout -b branch master &&
+		test_commit F
+	) &&
+	(
+		cd dst &&
+		git branch branch master &&
+		test_must_fail git push --force-with-lease=branch: origin branch
+	)
+'
+
+test_expect_success 'background updates of REMOTE can be mitigated with a non-updated REMOTE-push' '
+	rm -rf src dst &&
+	git init --bare src.bare &&
+	test_when_finished "rm -rf src.bare" &&
+	git clone --no-local src.bare dst &&
+	test_when_finished "rm -rf dst" &&
+	(
+		cd dst &&
+		test_commit G &&
+		git remote add origin-push ../src.bare &&
+		git push origin-push master:master
+	) &&
+	git clone --no-local src.bare dst2 &&
+	test_when_finished "rm -rf dst2" &&
+	(
+		cd dst2 &&
+		test_commit H &&
+		git push
+	) &&
+	(
+		cd dst &&
+		test_commit I &&
+		git fetch origin &&
+		test_must_fail git push --force-with-lease origin-push &&
+		git fetch origin-push &&
+		git push --force-with-lease origin-push
+	)
+'
+
+test_done