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git/t/t5516-fetch-push.sh
Johannes Schindelin 28391a80a9 receive-pack: allow deletion of corrupt refs
Occasionally, in some setups (*cough* forks on repo.or.cz *cough*) some
refs go stale, e.g. when the forkee rebased and lost some objects needed
by the fork.  The quick & dirty way to deal with those refs is to delete
them and push them again.

However, git-push first would first fetch the current commit name for the
ref, would receive a null sha1 since the ref does not point to a valid
object, then tell receive-pack that it should delete the ref with this
commit name.  delete_ref() would be subsequently be called, and check that
resolve_ref() (which does _not_ check for validity of the object) returns
the same commit name.  Which would fail.

The proper fix is to avoid corrupting repositories, but in the meantime
this is a good fix in any case.

Incidentally, some instances of "cd .." in the test cases were fixed, so
that subsequent test cases run in t/trash/ irrespective of the outcome of
the previous test cases.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-11-30 14:59:43 -08:00

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#!/bin/sh
test_description='fetching and pushing, with or without wildcard'
. ./test-lib.sh
D=`pwd`
mk_empty () {
rm -fr testrepo &&
mkdir testrepo &&
(
cd testrepo &&
git init &&
mv .git/hooks .git/hooks-disabled
)
}
mk_test () {
mk_empty &&
(
for ref in "$@"
do
git push testrepo $the_first_commit:refs/$ref || {
echo "Oops, push refs/$ref failure"
exit 1
}
done &&
cd testrepo &&
for ref in "$@"
do
r=$(git show-ref -s --verify refs/$ref) &&
test "z$r" = "z$the_first_commit" || {
echo "Oops, refs/$ref is wrong"
exit 1
}
done &&
git fsck --full
)
}
check_push_result () {
(
cd testrepo &&
it="$1" &&
shift
for ref in "$@"
do
r=$(git show-ref -s --verify refs/$ref) &&
test "z$r" = "z$it" || {
echo "Oops, refs/$ref is wrong"
exit 1
}
done &&
git fsck --full
)
}
test_expect_success setup '
: >path1 &&
git add path1 &&
test_tick &&
git commit -a -m repo &&
the_first_commit=$(git show-ref -s --verify refs/heads/master) &&
: >path2 &&
git add path2 &&
test_tick &&
git commit -a -m second &&
the_commit=$(git show-ref -s --verify refs/heads/master)
'
test_expect_success 'fetch without wildcard' '
mk_empty &&
(
cd testrepo &&
git fetch .. refs/heads/master:refs/remotes/origin/master &&
r=$(git show-ref -s --verify refs/remotes/origin/master) &&
test "z$r" = "z$the_commit" &&
test 1 = $(git for-each-ref refs/remotes/origin | wc -l)
)
'
test_expect_success 'fetch with wildcard' '
mk_empty &&
(
cd testrepo &&
git config remote.up.url .. &&
git config remote.up.fetch "refs/heads/*:refs/remotes/origin/*" &&
git fetch up &&
r=$(git show-ref -s --verify refs/remotes/origin/master) &&
test "z$r" = "z$the_commit" &&
test 1 = $(git for-each-ref refs/remotes/origin | wc -l)
)
'
test_expect_success 'push without wildcard' '
mk_empty &&
git push testrepo refs/heads/master:refs/remotes/origin/master &&
(
cd testrepo &&
r=$(git show-ref -s --verify refs/remotes/origin/master) &&
test "z$r" = "z$the_commit" &&
test 1 = $(git for-each-ref refs/remotes/origin | wc -l)
)
'
test_expect_success 'push with wildcard' '
mk_empty &&
git push testrepo "refs/heads/*:refs/remotes/origin/*" &&
(
cd testrepo &&
r=$(git show-ref -s --verify refs/remotes/origin/master) &&
test "z$r" = "z$the_commit" &&
test 1 = $(git for-each-ref refs/remotes/origin | wc -l)
)
'
test_expect_success 'push with matching heads' '
mk_test heads/master &&
git push testrepo &&
check_push_result $the_commit heads/master
'
test_expect_success 'push with no ambiguity (1)' '
mk_test heads/master &&
git push testrepo master:master &&
check_push_result $the_commit heads/master
'
test_expect_success 'push with no ambiguity (2)' '
mk_test remotes/origin/master &&
git push testrepo master:master &&
check_push_result $the_commit remotes/origin/master
'
test_expect_success 'push with weak ambiguity (1)' '
mk_test heads/master remotes/origin/master &&
git push testrepo master:master &&
check_push_result $the_commit heads/master &&
check_push_result $the_first_commit remotes/origin/master
'
test_expect_success 'push with weak ambiguity (2)' '
mk_test heads/master remotes/origin/master remotes/another/master &&
git push testrepo master:master &&
check_push_result $the_commit heads/master &&
check_push_result $the_first_commit remotes/origin/master remotes/another/master
'
test_expect_success 'push with ambiguity (1)' '
mk_test remotes/origin/master remotes/frotz/master &&
if git push testrepo master:master
then
echo "Oops, should have failed"
false
else
check_push_result $the_first_commit remotes/origin/master remotes/frotz/master
fi
'
test_expect_success 'push with ambiguity (2)' '
mk_test heads/frotz tags/frotz &&
if git push testrepo master:frotz
then
echo "Oops, should have failed"
false
else
check_push_result $the_first_commit heads/frotz tags/frotz
fi
'
test_expect_success 'push with colon-less refspec (1)' '
mk_test heads/frotz tags/frotz &&
git branch -f frotz master &&
git push testrepo frotz &&
check_push_result $the_commit heads/frotz &&
check_push_result $the_first_commit tags/frotz
'
test_expect_success 'push with colon-less refspec (2)' '
mk_test heads/frotz tags/frotz &&
if git show-ref --verify -q refs/heads/frotz
then
git branch -D frotz
fi &&
git tag -f frotz &&
git push testrepo frotz &&
check_push_result $the_commit tags/frotz &&
check_push_result $the_first_commit heads/frotz
'
test_expect_success 'push with colon-less refspec (3)' '
mk_test &&
if git show-ref --verify -q refs/tags/frotz
then
git tag -d frotz
fi &&
git branch -f frotz master &&
git push testrepo frotz &&
check_push_result $the_commit heads/frotz &&
test 1 = $( cd testrepo && git show-ref | wc -l )
'
test_expect_success 'push with colon-less refspec (4)' '
mk_test &&
if git show-ref --verify -q refs/heads/frotz
then
git branch -D frotz
fi &&
git tag -f frotz &&
git push testrepo frotz &&
check_push_result $the_commit tags/frotz &&
test 1 = $( cd testrepo && git show-ref | wc -l )
'
test_expect_success 'push with dry-run' '
mk_test heads/master &&
(cd testrepo &&
old_commit=$(git show-ref -s --verify refs/heads/master)) &&
git push --dry-run testrepo &&
check_push_result $old_commit heads/master
'
test_expect_success 'push updates local refs' '
rm -rf parent child &&
mkdir parent &&
(cd parent && git init &&
echo one >foo && git add foo && git commit -m one) &&
git clone parent child &&
(cd child &&
echo two >foo && git commit -a -m two &&
git push &&
test $(git rev-parse master) = $(git rev-parse remotes/origin/master))
'
test_expect_success 'push does not update local refs on failure' '
rm -rf parent child &&
mkdir parent &&
(cd parent && git init &&
echo one >foo && git add foo && git commit -m one &&
echo exit 1 >.git/hooks/pre-receive &&
chmod +x .git/hooks/pre-receive) &&
git clone parent child &&
(cd child &&
echo two >foo && git commit -a -m two &&
! git push &&
test $(git rev-parse master) != \
$(git rev-parse remotes/origin/master))
'
test_expect_success 'allow deleting an invalid remote ref' '
pwd &&
rm -f testrepo/.git/objects/??/* &&
git push testrepo :refs/heads/master &&
(cd testrepo && ! git rev-parse --verify refs/heads/master)
'
test_done