mirror of
https://github.com/git/git
synced 2024-08-27 11:39:22 +00:00
afe5d3d516
When calling "git symbolic-ref" it is easy to forget that the target must be a fully qualified ref. E.g., you might accidentally do: $ git symbolic-ref HEAD master Unfortunately, this is very difficult to recover from, because the bogus contents of HEAD make git believe we are no longer in a git repository (as is_git_dir explicitly checks for "^refs/heads/" in the HEAD target). So immediately trying to fix the situation doesn't work: $ git symbolic-ref HEAD refs/heads/master fatal: Not a git repository and one is left editing the .git/HEAD file manually. Furthermore, one might be tempted to use symbolic-ref to set up a detached HEAD: $ git symbolic-ref HEAD `git rev-parse HEAD` which sets up an even more bogus HEAD: $ cat .git/HEAD ref: 1a9ace4f2ad4176148e61b5a85cd63d5604aac6d This patch introduces a small safety valve to prevent the specific case of anything not starting with refs/heads/ to go into HEAD. The scope of the safety valve is intentionally very limited, to make sure that we are not preventing any behavior that would otherwise be valid (like pointing a different symref than HEAD outside of refs/heads/). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
42 lines
1 KiB
Bash
Executable file
42 lines
1 KiB
Bash
Executable file
#!/bin/sh
|
|
|
|
test_description='basic symbolic-ref tests'
|
|
. ./test-lib.sh
|
|
|
|
# If the tests munging HEAD fail, they can break detection of
|
|
# the git repo, meaning that further tests will operate on
|
|
# the surrounding git repo instead of the trash directory.
|
|
reset_to_sane() {
|
|
echo ref: refs/heads/foo >.git/HEAD
|
|
}
|
|
|
|
test_expect_success 'symbolic-ref writes HEAD' '
|
|
git symbolic-ref HEAD refs/heads/foo &&
|
|
echo ref: refs/heads/foo >expect &&
|
|
test_cmp expect .git/HEAD
|
|
'
|
|
|
|
test_expect_success 'symbolic-ref reads HEAD' '
|
|
echo refs/heads/foo >expect &&
|
|
git symbolic-ref HEAD >actual &&
|
|
test_cmp expect actual
|
|
'
|
|
|
|
test_expect_success 'symbolic-ref refuses non-ref for HEAD' '
|
|
test_must_fail git symbolic-ref HEAD foo
|
|
'
|
|
reset_to_sane
|
|
|
|
test_expect_success 'symbolic-ref refuses non-branch for HEAD' '
|
|
test_must_fail git symbolic-ref HEAD refs/foo
|
|
'
|
|
reset_to_sane
|
|
|
|
test_expect_success 'symbolic-ref refuses bare sha1' '
|
|
echo content >file && git add file && git commit -m one
|
|
test_must_fail git symbolic-ref HEAD `git rev-parse HEAD`
|
|
'
|
|
reset_to_sane
|
|
|
|
test_done
|