t5533: test "push --force-with-lease"

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, with various --force-with-lease options.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/t/t5533-push-cas.sh b/t/t5533-push-cas.sh
new file mode 100755 (executable)
index 0000000..ba20d83
--- /dev/null
+++ b/t/t5533-push-cas.sh
@@ -0,0 +1,189 @@
+#!/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
+       ) &&
+       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
+       ) &&
+       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
+       ) &&
+       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
+       ) &&
+       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
+       ) &&
+       >expect &&
+       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 --force-with-lease=master origin :master
+       ) &&
+       >expect &&
+       git ls-remote src refs/heads/master >actual &&
+       test_cmp expect 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_done