Adding upstream version 1:2.39.2.upstream/1%2.39.2upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 399 insertions, 0 deletions

diff --git a/t/t5533-push-cas.sh b/t/t5533-push-cas.sh
new file mode 100755
index 0000000..cba26a8
--- /dev/null
+++ b/t/t5533-push-cas.sh
@@ -0,0 +1,399 @@
+#!/bin/sh
+
+test_description='compare & swap push force/delete safety'
+
+GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
+export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
+
+. ./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
+	)
+}
+
+# For tests with "--force-if-includes".
+setup_src_dup_dst () {
+	rm -fr src dup dst &&
+	git init --bare dst &&
+	git clone --no-local dst src &&
+	git clone --no-local dst dup
+	(
+		cd src &&
+		test_commit A &&
+		test_commit B &&
+		test_commit C &&
+		git push origin
+	) &&
+	(
+		cd dup &&
+		git fetch &&
+		git merge origin/main &&
+		git switch -c branch main~2 &&
+		test_commit D &&
+		test_commit E &&
+		git push origin --all
+	) &&
+	(
+		cd src &&
+		git switch main &&
+		git fetch --all &&
+		git branch branch --track origin/branch &&
+		git rebase origin/main
+	) &&
+	(
+		cd dup &&
+		git switch main &&
+		test_commit F &&
+		test_commit G &&
+		git switch branch &&
+		test_commit H &&
+		git push origin --all
+	)
+}
+
+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=main:main origin main 2>err &&
+		grep "stale info" err
+	) &&
+	git ls-remote . refs/heads/main >expect &&
+	git ls-remote src refs/heads/main >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=main:main origin main 2>err &&
+		grep "forced update" err
+	) &&
+	git ls-remote dst refs/heads/main >expect &&
+	git ls-remote src refs/heads/main >actual &&
+	test_cmp expect actual
+'
+
+test_expect_success 'push to update (protected, tracking)' '
+	setup_srcdst_basic &&
+	(
+		cd src &&
+		git checkout main &&
+		test_commit D &&
+		git checkout HEAD^0
+	) &&
+	git ls-remote src refs/heads/main >expect &&
+	(
+		cd dst &&
+		test_commit E &&
+		git ls-remote . refs/remotes/origin/main >expect &&
+		test_must_fail git push --force-with-lease=main origin main &&
+		git ls-remote . refs/remotes/origin/main >actual &&
+		test_cmp expect actual
+	) &&
+	git ls-remote src refs/heads/main >actual &&
+	test_cmp expect actual
+'
+
+test_expect_success 'push to update (protected, tracking, forced)' '
+	setup_srcdst_basic &&
+	(
+		cd src &&
+		git checkout main &&
+		test_commit D &&
+		git checkout HEAD^0
+	) &&
+	(
+		cd dst &&
+		test_commit E &&
+		git ls-remote . refs/remotes/origin/main >expect &&
+		git push --force --force-with-lease=main origin main
+	) &&
+	git ls-remote dst refs/heads/main >expect &&
+	git ls-remote src refs/heads/main >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=main:main^ origin main
+	) &&
+	git ls-remote dst refs/heads/main >expect &&
+	git ls-remote src refs/heads/main >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=main origin main 2>err &&
+		! grep "forced update" err
+	) &&
+	git ls-remote dst refs/heads/main >expect &&
+	git ls-remote src refs/heads/main >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=main origin main 2>err &&
+		grep "forced update" err
+	) &&
+	git ls-remote dst refs/heads/main >expect &&
+	git ls-remote src refs/heads/main >actual &&
+	test_cmp expect actual
+'
+
+test_expect_success 'push to delete (protected)' '
+	setup_srcdst_basic &&
+	git ls-remote src refs/heads/main >expect &&
+	(
+		cd dst &&
+		test_must_fail git push --force-with-lease=main:main^ origin :main
+	) &&
+	git ls-remote src refs/heads/main >actual &&
+	test_cmp expect actual
+'
+
+test_expect_success 'push to delete (protected, forced)' '
+	setup_srcdst_basic &&
+	(
+		cd dst &&
+		git push --force --force-with-lease=main:main^ origin :main
+	) &&
+	git ls-remote src refs/heads/main >actual &&
+	test_must_be_empty actual
+'
+
+test_expect_success 'push to delete (allowed)' '
+	setup_srcdst_basic &&
+	(
+		cd dst &&
+		git push --force-with-lease=main origin :main 2>err &&
+		grep deleted err
+	) &&
+	git ls-remote src refs/heads/main >actual &&
+	test_must_be_empty actual
+'
+
+test_expect_success 'cover everything with default force-with-lease (protected)' '
+	setup_srcdst_basic &&
+	(
+		cd src &&
+		git branch nain main^
+	) &&
+	git ls-remote src refs/heads/\* >expect &&
+	(
+		cd dst &&
+		test_must_fail git push --force-with-lease origin main main:nain
+	) &&
+	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 nain main^
+	) &&
+	(
+		cd dst &&
+		git fetch &&
+		git push --force-with-lease origin main main:nain
+	) &&
+	git ls-remote dst refs/heads/main |
+	sed -e "s/main/nain/" >expect &&
+	git ls-remote src refs/heads/nain >actual &&
+	test_cmp expect actual
+'
+
+test_expect_success 'new branch covered by force-with-lease' '
+	setup_srcdst_basic &&
+	(
+		cd dst &&
+		git branch branch main &&
+		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 main &&
+		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 main &&
+		test_commit F
+	) &&
+	(
+		cd dst &&
+		git branch branch main &&
+		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 main:main
+	) &&
+	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_expect_success 'background updates to remote can be mitigated with "--force-if-includes"' '
+	setup_src_dup_dst &&
+	test_when_finished "rm -fr dst src dup" &&
+	git ls-remote dst refs/heads/main >expect.main &&
+	git ls-remote dst refs/heads/branch >expect.branch &&
+	(
+		cd src &&
+		git switch branch &&
+		test_commit I &&
+		git switch main &&
+		test_commit J &&
+		git fetch --all &&
+		test_must_fail git push --force-with-lease --force-if-includes --all
+	) &&
+	git ls-remote dst refs/heads/main >actual.main &&
+	git ls-remote dst refs/heads/branch >actual.branch &&
+	test_cmp expect.main actual.main &&
+	test_cmp expect.branch actual.branch
+'
+
+test_expect_success 'background updates to remote can be mitigated with "push.useForceIfIncludes"' '
+	setup_src_dup_dst &&
+	test_when_finished "rm -fr dst src dup" &&
+	git ls-remote dst refs/heads/main >expect.main &&
+	(
+		cd src &&
+		git switch branch &&
+		test_commit I &&
+		git switch main &&
+		test_commit J &&
+		git fetch --all &&
+		git config --local push.useForceIfIncludes true &&
+		test_must_fail git push --force-with-lease=main origin main
+	) &&
+	git ls-remote dst refs/heads/main >actual.main &&
+	test_cmp expect.main actual.main
+'
+
+test_expect_success '"--force-if-includes" should be disabled for --force-with-lease="<refname>:<expect>"' '
+	setup_src_dup_dst &&
+	test_when_finished "rm -fr dst src dup" &&
+	git ls-remote dst refs/heads/main >expect.main &&
+	(
+		cd src &&
+		git switch branch &&
+		test_commit I &&
+		git switch main &&
+		test_commit J &&
+		remote_head="$(git rev-parse refs/remotes/origin/main)" &&
+		git fetch --all &&
+		test_must_fail git push --force-if-includes --force-with-lease="main:$remote_head" 2>err &&
+		grep "stale info" err
+	) &&
+	git ls-remote dst refs/heads/main >actual.main &&
+	test_cmp expect.main actual.main
+'
+
+test_expect_success '"--force-if-includes" should allow forced update after a rebase ("pull --rebase")' '
+	setup_src_dup_dst &&
+	test_when_finished "rm -fr dst src dup" &&
+	(
+		cd src &&
+		git switch branch &&
+		test_commit I &&
+		git switch main &&
+		test_commit J &&
+		git pull --rebase origin main &&
+		git push --force-if-includes --force-with-lease="main"
+	)
+'
+
+test_expect_success '"--force-if-includes" should allow forced update after a rebase ("pull --rebase", local rebase)' '
+	setup_src_dup_dst &&
+	test_when_finished "rm -fr dst src dup" &&
+	(
+		cd src &&
+		git switch branch &&
+		test_commit I &&
+		git switch main &&
+		test_commit J &&
+		git pull --rebase origin main &&
+		git rebase --onto HEAD~4 HEAD~1 &&
+		git push --force-if-includes --force-with-lease="main"
+	)
+'
+
+test_expect_success '"--force-if-includes" should allow deletes' '
+	setup_src_dup_dst &&
+	test_when_finished "rm -fr dst src dup" &&
+	(
+		cd src &&
+		git switch branch &&
+		git pull --rebase origin branch &&
+		git push --force-if-includes --force-with-lease="branch" origin :branch
+	)
+'
+
+test_done