git/t/t1401-symbolic-ref.sh
Justin Tobler a26f1fb62b t1401: remove lockfile creation
To create error conditions, some tests set up reference locks by
directly creating its lockfile. While this works for the files reference
backend, this approach is incompatible with the reftable backend.
Refactor the test to create a d/f conflict via git-symbolic-ref(1)
instead so that the test is reference backend agnostic.

Signed-off-by: Justin Tobler <jltobler@gmail.com>
Acked-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-01-12 09:56:47 -08:00

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#!/bin/sh
test_description='basic symbolic-ref tests'
TEST_PASSES_SANITIZE_LEAK=true
. ./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() {
rm -rf .git &&
"$TAR" xf .git.tar
}
test_expect_success 'setup' '
git symbolic-ref HEAD refs/heads/foo &&
test_commit file &&
"$TAR" cf .git.tar .git/
'
test_expect_success 'symbolic-ref read/write roundtrip' '
git symbolic-ref HEAD refs/heads/read-write-roundtrip &&
echo refs/heads/read-write-roundtrip >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 bare sha1' '
rev=$(git rev-parse HEAD) &&
test_must_fail git symbolic-ref HEAD "$rev"
'
reset_to_sane
test_expect_success 'HEAD cannot be removed' '
test_must_fail git symbolic-ref -d HEAD
'
reset_to_sane
test_expect_success 'symbolic-ref can be deleted' '
git symbolic-ref NOTHEAD refs/heads/foo &&
git symbolic-ref -d NOTHEAD &&
git rev-parse refs/heads/foo &&
test_must_fail git symbolic-ref NOTHEAD
'
reset_to_sane
test_expect_success 'symbolic-ref can delete dangling symref' '
git symbolic-ref NOTHEAD refs/heads/missing &&
git symbolic-ref -d NOTHEAD &&
test_must_fail git rev-parse refs/heads/missing &&
test_must_fail git symbolic-ref NOTHEAD
'
reset_to_sane
test_expect_success 'symbolic-ref fails to delete missing FOO' '
echo "fatal: Cannot delete FOO, not a symbolic ref" >expect &&
test_must_fail git symbolic-ref -d FOO >actual 2>&1 &&
test_cmp expect actual
'
reset_to_sane
test_expect_success 'symbolic-ref fails to delete real ref' '
echo "fatal: Cannot delete refs/heads/foo, not a symbolic ref" >expect &&
test_must_fail git symbolic-ref -d refs/heads/foo >actual 2>&1 &&
git rev-parse --verify refs/heads/foo &&
test_cmp expect actual
'
reset_to_sane
test_expect_success 'create large ref name' '
# make 256+ character ref; some systems may not handle that,
# so be gentle
long=0123456789abcdef &&
long=$long/$long/$long/$long &&
long=$long/$long/$long/$long &&
long_ref=refs/heads/$long &&
tree=$(git write-tree) &&
commit=$(echo foo | git commit-tree $tree) &&
if git update-ref $long_ref $commit; then
test_set_prereq LONG_REF
else
echo >&2 "long refs not supported"
fi
'
test_expect_success LONG_REF 'symbolic-ref can point to large ref name' '
git symbolic-ref HEAD $long_ref &&
echo $long_ref >expect &&
git symbolic-ref HEAD >actual &&
test_cmp expect actual
'
test_expect_success LONG_REF 'we can parse long symbolic ref' '
echo $commit >expect &&
git rev-parse --verify HEAD >actual &&
test_cmp expect actual
'
test_expect_success 'symbolic-ref reports failure in exit code' '
# Create d/f conflict to simulate failure.
test_must_fail git symbolic-ref refs/heads refs/heads/foo
'
test_expect_success 'symbolic-ref writes reflog entry' '
git checkout -b log1 &&
test_commit one &&
git checkout -b log2 &&
test_commit two &&
git checkout --orphan orphan &&
git symbolic-ref -m create HEAD refs/heads/log1 &&
git symbolic-ref -m update HEAD refs/heads/log2 &&
cat >expect <<-\EOF &&
update
create
EOF
git log --format=%gs -g -2 >actual &&
test_cmp expect actual
'
test_expect_success 'symbolic-ref does not create ref d/f conflicts' '
git checkout -b df &&
test_commit df &&
test_must_fail git symbolic-ref refs/heads/df/conflict refs/heads/df &&
git pack-refs --all --prune &&
test_must_fail git symbolic-ref refs/heads/df/conflict refs/heads/df
'
test_expect_success 'symbolic-ref can overwrite pointer to invalid name' '
test_when_finished reset_to_sane &&
head=$(git rev-parse HEAD) &&
git symbolic-ref HEAD refs/heads/outer &&
test_when_finished "git update-ref -d refs/heads/outer/inner" &&
git update-ref refs/heads/outer/inner $head &&
git symbolic-ref HEAD refs/heads/unrelated
'
test_expect_success 'symbolic-ref can resolve d/f name (EISDIR)' '
test_when_finished reset_to_sane &&
head=$(git rev-parse HEAD) &&
git symbolic-ref HEAD refs/heads/outer/inner &&
test_when_finished "git update-ref -d refs/heads/outer" &&
git update-ref refs/heads/outer $head &&
echo refs/heads/outer/inner >expect &&
git symbolic-ref HEAD >actual &&
test_cmp expect actual
'
test_expect_success 'symbolic-ref can resolve d/f name (ENOTDIR)' '
test_when_finished reset_to_sane &&
head=$(git rev-parse HEAD) &&
git symbolic-ref HEAD refs/heads/outer &&
test_when_finished "git update-ref -d refs/heads/outer/inner" &&
git update-ref refs/heads/outer/inner $head &&
echo refs/heads/outer >expect &&
git symbolic-ref HEAD >actual &&
test_cmp expect actual
'
test_expect_success 'symbolic-ref refuses invalid target for non-HEAD' '
test_must_fail git symbolic-ref refs/heads/invalid foo..bar
'
test_expect_success 'symbolic-ref allows top-level target for non-HEAD' '
git symbolic-ref refs/heads/top-level ORIG_HEAD &&
git update-ref ORIG_HEAD HEAD &&
test_cmp_rev top-level HEAD
'
test_expect_success 'symbolic-ref pointing at another' '
git update-ref refs/heads/maint-2.37 HEAD &&
git symbolic-ref refs/heads/maint refs/heads/maint-2.37 &&
git checkout maint &&
git symbolic-ref HEAD >actual &&
echo refs/heads/maint-2.37 >expect &&
test_cmp expect actual &&
git symbolic-ref --no-recurse HEAD >actual &&
echo refs/heads/maint >expect &&
test_cmp expect actual
'
test_expect_success 'symbolic-ref --short handles complex utf8 case' '
name="测试-加-增加-加-增加" &&
git symbolic-ref TEST_SYMREF "refs/heads/$name" &&
# In the real world, we saw problems with this case only
# when the locale includes UTF-8. Set it here to try to make things as
# hard as possible for us to pass, but in practice we should do the
# right thing regardless (and of course some platforms may not even
# have this locale).
LC_ALL=en_US.UTF-8 git symbolic-ref --short TEST_SYMREF >actual &&
echo "$name" >expect &&
test_cmp expect actual
'
test_expect_success 'symbolic-ref --short handles name with suffix' '
git symbolic-ref TEST_SYMREF "refs/remotes/origin/HEAD" &&
git symbolic-ref --short TEST_SYMREF >actual &&
echo "origin" >expect &&
test_cmp expect actual
'
test_expect_success 'symbolic-ref --short handles almost-matching name' '
git symbolic-ref TEST_SYMREF "refs/headsXfoo" &&
git symbolic-ref --short TEST_SYMREF >actual &&
echo "headsXfoo" >expect &&
test_cmp expect actual
'
test_expect_success 'symbolic-ref --short handles name with percent' '
git symbolic-ref TEST_SYMREF "refs/heads/%foo" &&
git symbolic-ref --short TEST_SYMREF >actual &&
echo "%foo" >expect &&
test_cmp expect actual
'
test_done