12cfa792b8
If you delete the symbolic-ref HEAD from a repository, Git no longer
considers the repository valid, and even "git symbolic-ref HEAD
refs/heads/master" would not be able to recover from that state
(although "git init" can, but that is a sure sign that you are
talking about a "broken" repository).
In the spirit similar to afe5d3d5 ("symbolic ref: refuse non-ref
targets in HEAD", 2009-01-29), forbid removal of HEAD to avoid
corrupting a repository.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
140 lines
3.8 KiB
Bash
Executable File
140 lines
3.8 KiB
Bash
Executable File
#!/bin/sh
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test_description='basic symbolic-ref tests'
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. ./test-lib.sh
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# If the tests munging HEAD fail, they can break detection of
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# the git repo, meaning that further tests will operate on
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# the surrounding git repo instead of the trash directory.
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reset_to_sane() {
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echo ref: refs/heads/foo >.git/HEAD
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}
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test_expect_success 'symbolic-ref writes HEAD' '
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git symbolic-ref HEAD refs/heads/foo &&
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echo ref: refs/heads/foo >expect &&
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test_cmp expect .git/HEAD
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'
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test_expect_success 'symbolic-ref reads HEAD' '
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echo refs/heads/foo >expect &&
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git symbolic-ref HEAD >actual &&
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test_cmp expect actual
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'
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test_expect_success 'symbolic-ref refuses non-ref for HEAD' '
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test_must_fail git symbolic-ref HEAD foo
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'
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reset_to_sane
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test_expect_success 'symbolic-ref refuses bare sha1' '
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echo content >file && git add file && git commit -m one &&
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test_must_fail git symbolic-ref HEAD $(git rev-parse HEAD)
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'
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reset_to_sane
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test_expect_success 'HEAD cannot be removed' '
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test_must_fail git symbolic-ref -d HEAD
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'
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reset_to_sane
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test_expect_success 'symbolic-ref can be deleted' '
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git symbolic-ref NOTHEAD refs/heads/foo &&
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git symbolic-ref -d NOTHEAD &&
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test_path_is_file .git/refs/heads/foo &&
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test_path_is_missing .git/NOTHEAD
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'
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reset_to_sane
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test_expect_success 'symbolic-ref can delete dangling symref' '
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git symbolic-ref NOTHEAD refs/heads/missing &&
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git symbolic-ref -d NOTHEAD &&
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test_path_is_missing .git/refs/heads/missing &&
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test_path_is_missing .git/NOTHEAD
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'
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reset_to_sane
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test_expect_success 'symbolic-ref fails to delete missing FOO' '
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echo "fatal: Cannot delete FOO, not a symbolic ref" >expect &&
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test_must_fail git symbolic-ref -d FOO >actual 2>&1 &&
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test_cmp expect actual
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'
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reset_to_sane
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test_expect_success 'symbolic-ref fails to delete real ref' '
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echo "fatal: Cannot delete refs/heads/foo, not a symbolic ref" >expect &&
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test_must_fail git symbolic-ref -d refs/heads/foo >actual 2>&1 &&
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test_path_is_file .git/refs/heads/foo &&
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test_cmp expect actual
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'
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reset_to_sane
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test_expect_success 'create large ref name' '
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# make 256+ character ref; some systems may not handle that,
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# so be gentle
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long=0123456789abcdef &&
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long=$long/$long/$long/$long &&
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long=$long/$long/$long/$long &&
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long_ref=refs/heads/$long &&
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tree=$(git write-tree) &&
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commit=$(echo foo | git commit-tree $tree) &&
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if git update-ref $long_ref $commit; then
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test_set_prereq LONG_REF
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else
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echo >&2 "long refs not supported"
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fi
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'
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test_expect_success LONG_REF 'symbolic-ref can point to large ref name' '
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git symbolic-ref HEAD $long_ref &&
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echo $long_ref >expect &&
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git symbolic-ref HEAD >actual &&
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test_cmp expect actual
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'
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test_expect_success LONG_REF 'we can parse long symbolic ref' '
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echo $commit >expect &&
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git rev-parse --verify HEAD >actual &&
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test_cmp expect actual
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'
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test_expect_success 'symbolic-ref reports failure in exit code' '
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test_when_finished "rm -f .git/HEAD.lock" &&
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>.git/HEAD.lock &&
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test_must_fail git symbolic-ref HEAD refs/heads/whatever
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'
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test_expect_success 'symbolic-ref writes reflog entry' '
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git checkout -b log1 &&
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test_commit one &&
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git checkout -b log2 &&
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test_commit two &&
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git checkout --orphan orphan &&
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git symbolic-ref -m create HEAD refs/heads/log1 &&
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git symbolic-ref -m update HEAD refs/heads/log2 &&
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cat >expect <<-\EOF &&
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update
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create
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EOF
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git log --format=%gs -g -2 >actual &&
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test_cmp expect actual
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'
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test_expect_success 'symbolic-ref does not create ref d/f conflicts' '
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git checkout -b df &&
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test_commit df &&
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test_must_fail git symbolic-ref refs/heads/df/conflict refs/heads/df &&
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git pack-refs --all --prune &&
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test_must_fail git symbolic-ref refs/heads/df/conflict refs/heads/df
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'
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test_expect_success 'symbolic-ref handles existing pointer to invalid name' '
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head=$(git rev-parse HEAD) &&
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git symbolic-ref HEAD refs/heads/outer &&
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git update-ref refs/heads/outer/inner $head &&
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git symbolic-ref HEAD refs/heads/unrelated
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'
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test_done
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