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git/t/t3507-cherry-pick-conflict.sh
Patrick Steinhardt de54b450a3 merge-ort: unconditionally release attributes index 
We conditionally release the index used for reading gitattributes in
merge-ort based on whether or the index has been populated. This check
uses `cache_nr` as a condition. This isn't sufficient though, as the
variable may be zero even when some other parts of the index have been
populated. This leads to memory leaks when sparse checkouts are in use,
as we may not end up releasing the sparse checkout patterns.

Fix this issue by unconditionally releasing the index.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-08-14 10:08:00 -07:00

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#!/bin/sh
test_description='test cherry-pick and revert with conflicts
-
+ picked: rewrites foo to c
+ base: rewrites foo to b
+ initial: writes foo as a, unrelated as unrelated
'
GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
TEST_CREATE_REPO_NO_TEMPLATE=1
TEST_PASSES_SANITIZE_LEAK=true
. ./test-lib.sh
pristine_detach () {
git checkout -f "$1^0" &&
git read-tree -u --reset HEAD &&
git clean -d -f -f -q -x
}
test_expect_success setup '
echo unrelated >unrelated &&
git add unrelated &&
test_commit initial foo a &&
test_commit base foo b &&
test_commit picked foo c &&
test_commit --signoff picked-signed foo d &&
git checkout -b topic initial &&
test_commit redundant-pick foo c redundant &&
git commit --allow-empty --allow-empty-message &&
git tag empty &&
git checkout main &&
git config advice.detachedhead false
'
test_expect_success 'failed cherry-pick does not advance HEAD' '
pristine_detach initial &&
head=$(git rev-parse HEAD) &&
test_must_fail git cherry-pick picked &&
newhead=$(git rev-parse HEAD) &&
test "$head" = "$newhead"
'
test_expect_success 'advice from failed cherry-pick' '
pristine_detach initial &&
picked=$(git rev-parse --short picked) &&
cat <<-EOF >expected &&
error: could not apply $picked... picked
hint: After resolving the conflicts, mark them with
hint: "git add/rm <pathspec>", then run
hint: "git cherry-pick --continue".
hint: You can instead skip this commit with "git cherry-pick --skip".
hint: To abort and get back to the state before "git cherry-pick",
hint: run "git cherry-pick --abort".
hint: Disable this message with "git config advice.mergeConflict false"
EOF
test_must_fail git cherry-pick picked 2>actual &&
test_cmp expected actual
'
test_expect_success 'advice from failed cherry-pick --no-commit' "
pristine_detach initial &&
picked=\$(git rev-parse --short picked) &&
cat <<-EOF >expected &&
error: could not apply \$picked... picked
hint: after resolving the conflicts, mark the corrected paths
hint: with 'git add <paths>' or 'git rm <paths>'
hint: Disable this message with \"git config advice.mergeConflict false\"
EOF
test_must_fail git cherry-pick --no-commit picked 2>actual &&
test_cmp expected actual
"
test_expect_success 'failed cherry-pick sets CHERRY_PICK_HEAD' '
pristine_detach initial &&
test_must_fail git cherry-pick picked &&
test_cmp_rev picked CHERRY_PICK_HEAD
'
test_expect_success 'successful cherry-pick does not set CHERRY_PICK_HEAD' '
pristine_detach initial &&
git cherry-pick base &&
test_must_fail git rev-parse --verify CHERRY_PICK_HEAD
'
test_expect_success 'cherry-pick --no-commit does not set CHERRY_PICK_HEAD' '
pristine_detach initial &&
git cherry-pick --no-commit base &&
test_must_fail git rev-parse --verify CHERRY_PICK_HEAD
'
test_expect_success 'cherry-pick w/dirty tree does not set CHERRY_PICK_HEAD' '
pristine_detach initial &&
echo foo >foo &&
test_must_fail git cherry-pick base &&
test_must_fail git rev-parse --verify CHERRY_PICK_HEAD
'
test_expect_success \
'cherry-pick --strategy=resolve w/dirty tree does not set CHERRY_PICK_HEAD' '
pristine_detach initial &&
echo foo >foo &&
test_must_fail git cherry-pick --strategy=resolve base &&
test_must_fail git rev-parse --verify CHERRY_PICK_HEAD
'
test_expect_success 'GIT_CHERRY_PICK_HELP suppresses CHERRY_PICK_HEAD' '
pristine_detach initial &&
(
GIT_CHERRY_PICK_HELP="and then do something else" &&
export GIT_CHERRY_PICK_HELP &&
test_must_fail git cherry-pick picked
) &&
test_must_fail git rev-parse --verify CHERRY_PICK_HEAD
'
test_expect_success 'git reset clears CHERRY_PICK_HEAD' '
pristine_detach initial &&
test_must_fail git cherry-pick picked &&
git reset &&
test_must_fail git rev-parse --verify CHERRY_PICK_HEAD
'
test_expect_success 'failed commit does not clear CHERRY_PICK_HEAD' '
pristine_detach initial &&
test_must_fail git cherry-pick picked &&
test_must_fail git commit &&
test_cmp_rev picked CHERRY_PICK_HEAD
'
test_expect_success 'cancelled commit does not clear CHERRY_PICK_HEAD' '
pristine_detach initial &&
test_must_fail git cherry-pick picked &&
echo resolved >foo &&
git add foo &&
git update-index --refresh -q &&
test_must_fail git diff-index --exit-code HEAD &&
(
GIT_EDITOR=false &&
export GIT_EDITOR &&
test_must_fail git commit
) &&
test_cmp_rev picked CHERRY_PICK_HEAD
'
test_expect_success 'successful commit clears CHERRY_PICK_HEAD' '
pristine_detach initial &&
test_must_fail git cherry-pick picked &&
echo resolved >foo &&
git add foo &&
git commit &&
test_must_fail git rev-parse --verify CHERRY_PICK_HEAD
'
test_expect_success 'partial commit of cherry-pick fails' '
pristine_detach initial &&
test_must_fail git cherry-pick picked &&
echo resolved >foo &&
git add foo &&
test_must_fail git commit foo 2>err &&
test_grep "cannot do a partial commit during a cherry-pick." err
'
test_expect_success 'commit --amend of cherry-pick fails' '
pristine_detach initial &&
test_must_fail git cherry-pick picked &&
echo resolved >foo &&
git add foo &&
test_must_fail git commit --amend 2>err &&
test_grep "in the middle of a cherry-pick -- cannot amend." err
'
test_expect_success 'successful final commit clears cherry-pick state' '
pristine_detach initial &&
test_must_fail git cherry-pick base picked-signed &&
echo resolved >foo &&
test_path_is_file .git/sequencer/todo &&
git commit -a &&
test_path_is_missing .git/sequencer
'
test_expect_success 'reset after final pick clears cherry-pick state' '
pristine_detach initial &&
test_must_fail git cherry-pick base picked-signed &&
echo resolved >foo &&
test_path_is_file .git/sequencer/todo &&
git reset &&
test_path_is_missing .git/sequencer
'
test_expect_success 'failed cherry-pick produces dirty index' '
pristine_detach initial &&
test_must_fail git cherry-pick picked &&
test_must_fail git update-index --refresh -q &&
test_must_fail git diff-index --exit-code HEAD
'
test_expect_success 'failed cherry-pick registers participants in index' '
pristine_detach initial &&
{
git checkout base -- foo &&
git ls-files --stage foo &&
git checkout initial -- foo &&
git ls-files --stage foo &&
git checkout picked -- foo &&
git ls-files --stage foo
} >stages &&
sed "
1 s/ 0 / 1 /
2 s/ 0 / 2 /
3 s/ 0 / 3 /
" stages >expected &&
git read-tree -u --reset HEAD &&
test_must_fail git cherry-pick picked &&
git ls-files --stage --unmerged >actual &&
test_cmp expected actual
'
test_expect_success \
'cherry-pick conflict, ensure commit.cleanup = scissors places scissors line properly' '
pristine_detach initial &&
git config commit.cleanup scissors &&
cat <<-EOF >expected &&
picked
# ------------------------ >8 ------------------------
# Do not modify or remove the line above.
# Everything below it will be ignored.
#
# Conflicts:
# foo
EOF
test_must_fail git cherry-pick picked &&
test_cmp expected .git/MERGE_MSG
'
test_expect_success \
'cherry-pick conflict, ensure cleanup=scissors places scissors line properly' '
pristine_detach initial &&
git config --unset commit.cleanup &&
cat <<-EOF >expected &&
picked
# ------------------------ >8 ------------------------
# Do not modify or remove the line above.
# Everything below it will be ignored.
#
# Conflicts:
# foo
EOF
test_must_fail git cherry-pick --cleanup=scissors picked &&
test_cmp expected .git/MERGE_MSG
'
test_expect_success 'failed cherry-pick describes conflict in work tree' '
pristine_detach initial &&
cat <<-EOF >expected &&
<<<<<<< HEAD
a
=======
c
>>>>>>> objid (picked)
EOF
test_must_fail git cherry-pick picked &&
sed "s/[a-f0-9]* (/objid (/" foo >actual &&
test_cmp expected actual
'
test_expect_success 'diff3 -m style' '
pristine_detach initial &&
git config merge.conflictstyle diff3 &&
cat <<-EOF >expected &&
<<<<<<< HEAD
a
||||||| parent of objid (picked)
b
=======
c
>>>>>>> objid (picked)
EOF
test_must_fail git cherry-pick picked &&
sed "s/[a-f0-9]* (/objid (/" foo >actual &&
test_cmp expected actual
'
test_expect_success 'revert also handles conflicts sanely' '
git config --unset merge.conflictstyle &&
pristine_detach initial &&
cat <<-EOF >expected &&
<<<<<<< HEAD
a
=======
b
>>>>>>> parent of objid (picked)
EOF
{
git checkout picked -- foo &&
git ls-files --stage foo &&
git checkout initial -- foo &&
git ls-files --stage foo &&
git checkout base -- foo &&
git ls-files --stage foo
} >stages &&
sed "
1 s/ 0 / 1 /
2 s/ 0 / 2 /
3 s/ 0 / 3 /
" stages >expected-stages &&
git read-tree -u --reset HEAD &&
head=$(git rev-parse HEAD) &&
test_must_fail git revert picked &&
newhead=$(git rev-parse HEAD) &&
git ls-files --stage --unmerged >actual-stages &&
test "$head" = "$newhead" &&
test_must_fail git update-index --refresh -q &&
test_must_fail git diff-index --exit-code HEAD &&
test_cmp expected-stages actual-stages &&
sed "s/[a-f0-9]* (/objid (/" foo >actual &&
test_cmp expected actual
'
test_expect_success 'failed revert sets REVERT_HEAD' '
pristine_detach initial &&
test_must_fail git revert picked &&
test_cmp_rev picked REVERT_HEAD
'
test_expect_success 'successful revert does not set REVERT_HEAD' '
pristine_detach base &&
git revert base &&
test_must_fail git rev-parse --verify CHERRY_PICK_HEAD &&
test_must_fail git rev-parse --verify REVERT_HEAD
'
test_expect_success 'revert --no-commit sets REVERT_HEAD' '
pristine_detach base &&
git revert --no-commit base &&
test_must_fail git rev-parse --verify CHERRY_PICK_HEAD &&
test_cmp_rev base REVERT_HEAD
'
test_expect_success 'revert w/dirty tree does not set REVERT_HEAD' '
pristine_detach base &&
echo foo >foo &&
test_must_fail git revert base &&
test_must_fail git rev-parse --verify CHERRY_PICK_HEAD &&
test_must_fail git rev-parse --verify REVERT_HEAD
'
test_expect_success 'GIT_CHERRY_PICK_HELP does not suppress REVERT_HEAD' '
pristine_detach initial &&
(
GIT_CHERRY_PICK_HELP="and then do something else" &&
GIT_REVERT_HELP="and then do something else, again" &&
export GIT_CHERRY_PICK_HELP GIT_REVERT_HELP &&
test_must_fail git revert picked
) &&
test_must_fail git rev-parse --verify CHERRY_PICK_HEAD &&
test_cmp_rev picked REVERT_HEAD
'
test_expect_success 'git reset clears REVERT_HEAD' '
pristine_detach initial &&
test_must_fail git revert picked &&
git reset &&
test_must_fail git rev-parse --verify REVERT_HEAD
'
test_expect_success 'failed commit does not clear REVERT_HEAD' '
pristine_detach initial &&
test_must_fail git revert picked &&
test_must_fail git commit &&
test_cmp_rev picked REVERT_HEAD
'
test_expect_success 'successful final commit clears revert state' '
pristine_detach picked-signed &&
test_must_fail git revert picked-signed base &&
echo resolved >foo &&
test_path_is_file .git/sequencer/todo &&
git commit -a &&
test_path_is_missing .git/sequencer
'
test_expect_success 'reset after final pick clears revert state' '
pristine_detach picked-signed &&
test_must_fail git revert picked-signed base &&
echo resolved >foo &&
test_path_is_file .git/sequencer/todo &&
git reset &&
test_path_is_missing .git/sequencer
'
test_expect_success 'revert conflict, diff3 -m style' '
pristine_detach initial &&
git config merge.conflictstyle diff3 &&
cat <<-EOF >expected &&
<<<<<<< HEAD
a
||||||| objid (picked)
c
=======
b
>>>>>>> parent of objid (picked)
EOF
test_must_fail git revert picked &&
sed "s/[a-f0-9]* (/objid (/" foo >actual &&
test_cmp expected actual
'
test_expect_success \
'revert conflict, ensure commit.cleanup = scissors places scissors line properly' '
pristine_detach initial &&
git config commit.cleanup scissors &&
cat >expected <<-EOF &&
Revert "picked"
This reverts commit OBJID.
# ------------------------ >8 ------------------------
# Do not modify or remove the line above.
# Everything below it will be ignored.
#
# Conflicts:
# foo
EOF
test_must_fail git revert picked &&
sed "s/$OID_REGEX/OBJID/" .git/MERGE_MSG >actual &&
test_cmp expected actual
'
test_expect_success \
'revert conflict, ensure cleanup=scissors places scissors line properly' '
pristine_detach initial &&
git config --unset commit.cleanup &&
cat >expected <<-EOF &&
Revert "picked"
This reverts commit OBJID.
# ------------------------ >8 ------------------------
# Do not modify or remove the line above.
# Everything below it will be ignored.
#
# Conflicts:
# foo
EOF
test_must_fail git revert --cleanup=scissors picked &&
sed "s/$OID_REGEX/OBJID/" .git/MERGE_MSG >actual &&
test_cmp expected actual
'
test_expect_success 'failed cherry-pick does not forget -s' '
pristine_detach initial &&
test_must_fail git cherry-pick -s picked &&
test_grep -e "Signed-off-by" .git/MERGE_MSG
'
test_expect_success 'commit after failed cherry-pick does not add duplicated -s' '
pristine_detach initial &&
test_must_fail git cherry-pick -s picked-signed &&
git commit -a -s &&
test $(git show -s >tmp && grep -c "Signed-off-by" tmp && rm tmp) = 1
'
test_expect_success 'commit after failed cherry-pick adds -s at the right place' '
pristine_detach initial &&
test_must_fail git cherry-pick picked &&
git commit -a -s &&
# Do S-o-b and Conflicts appear in the right order?
cat <<-\EOF >expect &&
Signed-off-by: C O Mitter <committer@example.com>
# Conflicts:
EOF
grep -e "^# Conflicts:" -e "^Signed-off-by" .git/COMMIT_EDITMSG >actual &&
test_cmp expect actual &&
cat <<-\EOF >expected &&
picked
Signed-off-by: C O Mitter <committer@example.com>
EOF
git show -s --pretty=format:%B >actual &&
test_cmp expected actual
'
test_expect_success 'commit --amend -s places the sign-off at the right place' '
pristine_detach initial &&
test_must_fail git cherry-pick picked &&
# emulate old-style conflicts block
mv .git/MERGE_MSG .git/MERGE_MSG+ &&
sed -e "/^# Conflicts:/,\$s/^# *//" .git/MERGE_MSG+ >.git/MERGE_MSG &&
git commit -a &&
git commit --amend -s &&
# Do S-o-b and Conflicts appear in the right order?
cat <<-\EOF >expect &&
Signed-off-by: C O Mitter <committer@example.com>
Conflicts:
EOF
grep -e "^Conflicts:" -e "^Signed-off-by" .git/COMMIT_EDITMSG >actual &&
test_cmp expect actual
'
test_expect_success 'cherry-pick preserves sparse-checkout' '
pristine_detach initial &&
test_config core.sparseCheckout true &&
test_when_finished "
echo \"/*\" >.git/info/sparse-checkout
git read-tree --reset -u HEAD
rm .git/info/sparse-checkout" &&
mkdir .git/info &&
echo /unrelated >.git/info/sparse-checkout &&
git read-tree --reset -u HEAD &&
test_must_fail git cherry-pick -Xours picked>actual &&
test_grep ! "Changes not staged for commit:" actual
'
test_expect_success 'cherry-pick --continue remembers --keep-redundant-commits' '
test_when_finished "git cherry-pick --abort || :" &&
pristine_detach initial &&
test_must_fail git cherry-pick --keep-redundant-commits picked redundant &&
echo c >foo &&
git add foo &&
git cherry-pick --continue
'
test_expect_success 'cherry-pick --continue remembers --allow-empty and --allow-empty-message' '
test_when_finished "git cherry-pick --abort || :" &&
pristine_detach initial &&
test_must_fail git cherry-pick --allow-empty --allow-empty-message \
picked empty &&
echo c >foo &&
git add foo &&
git cherry-pick --continue
'
test_done
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