git/t/t3418-rebase-continue.sh
Phillip Wood 4960e5c7bd rebase -m: fix serialization of strategy options
To store the strategy options rebase prepends " --" to each one and
writes them to a file. To load them it reads the file and passes the
contents to split_cmdline(). This roughly mimics the behavior of the
scripted rebase but has a couple of limitations, (1) options containing
whitespace are not properly preserved (this is true of the scripted
rebase as well) and (2) options containing '"' or '\' are incorrectly
parsed and may cause the parser to return an error.

Fix these limitations by quoting each option when they are stored so
that they can be parsed correctly. Now that "--preserve-merges" no
longer exist this change also stops prepending "--" to the options when
they are stored as that was an artifact of the scripted rebase.

These changes are backwards compatible so the files written by an older
version of git can still be read. They are also forwards compatible,
the file can still be parsed by recent versions of git as they treat the
"--" prefix as optional.

Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-04-10 09:53:19 -07:00

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#!/bin/sh
test_description='git rebase --continue tests'
GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
. ./test-lib.sh
. "$TEST_DIRECTORY"/lib-rebase.sh
set_fake_editor
test_expect_success 'setup' '
test_commit "commit-new-file-F1" F1 1 &&
test_commit "commit-new-file-F2" F2 2 &&
git checkout -b topic HEAD^ &&
test_commit "commit-new-file-F2-on-topic-branch" F2 22 &&
git checkout main
'
test_expect_success 'merge based rebase --continue with works with touched file' '
rm -fr .git/rebase-* &&
git reset --hard &&
git checkout main &&
FAKE_LINES="edit 1" git rebase -i HEAD^ &&
test-tool chmtime =-60 F1 &&
git rebase --continue
'
test_expect_success 'merge based rebase --continue removes .git/MERGE_MSG' '
git checkout -f --detach topic &&
test_must_fail git rebase --onto main HEAD^ &&
git read-tree --reset -u HEAD &&
test_path_is_file .git/MERGE_MSG &&
git rebase --continue &&
test_path_is_missing .git/MERGE_MSG
'
test_expect_success 'apply based rebase --continue works with touched file' '
rm -fr .git/rebase-* &&
git reset --hard &&
git checkout main &&
test_must_fail git rebase --apply --onto main main topic &&
echo "Resolved" >F2 &&
git add F2 &&
test-tool chmtime =-60 F1 &&
git rebase --continue
'
test_expect_success 'rebase --continue can not be used with other options' '
test_must_fail git rebase -v --continue &&
test_must_fail git rebase --continue -v
'
test_expect_success 'rebase --continue remembers merge strategy and options' '
rm -fr .git/rebase-* &&
git reset --hard commit-new-file-F2-on-topic-branch &&
test_commit "commit-new-file-F3-on-topic-branch" F3 32 &&
test_when_finished "rm -fr test-bin" &&
mkdir test-bin &&
write_script test-bin/git-merge-funny <<-\EOF &&
printf "[%s]\n" $# "$1" "$2" "$3" "$5" >actual
shift 3 &&
exec git merge-recursive "$@"
EOF
cat >expect <<-\EOF &&
[7]
[--option=arg with space]
[--op"tion\]
[--new
line ]
[--]
EOF
rm -f actual &&
(
PATH=./test-bin:$PATH &&
test_must_fail git rebase -s funny -X"option=arg with space" \
-Xop\"tion\\ -X"new${LF}line " main topic
) &&
test_cmp expect actual &&
rm actual &&
echo "Resolved" >F2 &&
git add F2 &&
(
PATH=./test-bin:$PATH &&
git rebase --continue
) &&
test_cmp expect actual
'
test_expect_success 'rebase -i --continue handles merge strategy and options' '
rm -fr .git/rebase-* &&
git reset --hard commit-new-file-F2-on-topic-branch &&
test_commit "commit-new-file-F3-on-topic-branch-for-dash-i" F3 32 &&
test_when_finished "rm -fr test-bin funny.was.run funny.args" &&
mkdir test-bin &&
cat >test-bin/git-merge-funny <<-EOF &&
#!$SHELL_PATH
echo "\$@" >>funny.args
case "\$1" in --opt) ;; *) exit 2 ;; esac
case "\$2" in --foo) ;; *) exit 2 ;; esac
case "\$4" in --) ;; *) exit 2 ;; esac
shift 2 &&
>funny.was.run &&
exec git merge-recursive "\$@"
EOF
chmod +x test-bin/git-merge-funny &&
(
PATH=./test-bin:$PATH &&
test_must_fail git rebase -i -s funny -Xopt -Xfoo main topic
) &&
test -f funny.was.run &&
rm funny.was.run &&
echo "Resolved" >F2 &&
git add F2 &&
(
PATH=./test-bin:$PATH &&
git rebase --continue
) &&
test -f funny.was.run
'
test_expect_success 'rebase -r passes merge strategy options correctly' '
rm -fr .git/rebase-* &&
git reset --hard commit-new-file-F3-on-topic-branch &&
test_commit merge-theirs &&
git reset --hard HEAD^ &&
test_commit some-other-commit &&
test_tick &&
git merge --no-ff merge-theirs &&
FAKE_LINES="1 3 edit 4 5 7 8 9" git rebase -i -f -r -m \
-s recursive --strategy-option=theirs HEAD~2 &&
test_commit force-change-ours &&
git rebase --continue
'
test_expect_success '--skip after failed fixup cleans commit message' '
test_when_finished "test_might_fail git rebase --abort" &&
git checkout -b with-conflicting-fixup &&
test_commit wants-fixup &&
test_commit "fixup! wants-fixup" wants-fixup.t 1 wants-fixup-1 &&
test_commit "fixup! wants-fixup" wants-fixup.t 2 wants-fixup-2 &&
test_commit "fixup! wants-fixup" wants-fixup.t 3 wants-fixup-3 &&
test_must_fail env FAKE_LINES="1 fixup 2 squash 4" \
git rebase -i HEAD~4 &&
: now there is a conflict, and comments in the commit message &&
git show HEAD >out &&
grep "fixup! wants-fixup" out &&
: skip and continue &&
echo "cp \"\$1\" .git/copy.txt" | write_script copy-editor.sh &&
(test_set_editor "$PWD/copy-editor.sh" && git rebase --skip) &&
: the user should not have had to edit the commit message &&
test_path_is_missing .git/copy.txt &&
: now the comments in the commit message should have been cleaned up &&
git show HEAD >out &&
! grep "fixup! wants-fixup" out &&
: now, let us ensure that "squash" is handled correctly &&
git reset --hard wants-fixup-3 &&
test_must_fail env FAKE_LINES="1 squash 4 squash 2 squash 4" \
git rebase -i HEAD~4 &&
: the first squash failed, but there are two more in the chain &&
(test_set_editor "$PWD/copy-editor.sh" &&
test_must_fail git rebase --skip) &&
: not the final squash, no need to edit the commit message &&
test_path_is_missing .git/copy.txt &&
: The first squash was skipped, therefore: &&
git show HEAD >out &&
test_i18ngrep "# This is a combination of 2 commits" out &&
test_i18ngrep "# This is the commit message #2:" out &&
(test_set_editor "$PWD/copy-editor.sh" && git rebase --skip) &&
git show HEAD >out &&
test_i18ngrep ! "# This is a combination" out &&
: Final squash failed, but there was still a squash &&
test_i18ngrep "# This is a combination of 2 commits" .git/copy.txt &&
test_i18ngrep "# This is the commit message #2:" .git/copy.txt
'
test_expect_success 'setup rerere database' '
rm -fr .git/rebase-* &&
git reset --hard commit-new-file-F3-on-topic-branch &&
git checkout main &&
test_commit "commit-new-file-F3" F3 3 &&
test_config rerere.enabled true &&
git update-ref refs/heads/topic commit-new-file-F3-on-topic-branch &&
test_must_fail git rebase -m main topic &&
echo "Resolved" >F2 &&
cp F2 expected-F2 &&
git add F2 &&
test_must_fail git rebase --continue &&
echo "Resolved" >F3 &&
cp F3 expected-F3 &&
git add F3 &&
git rebase --continue &&
git reset --hard topic@{1}
'
prepare () {
rm -fr .git/rebase-* &&
git reset --hard commit-new-file-F3-on-topic-branch &&
git checkout main &&
test_config rerere.enabled true
}
test_rerere_autoupdate () {
action=$1 &&
test_expect_success "rebase $action --continue remembers --rerere-autoupdate" '
prepare &&
test_must_fail git rebase $action --rerere-autoupdate main topic &&
test_cmp expected-F2 F2 &&
git diff-files --quiet &&
test_must_fail git rebase --continue &&
test_cmp expected-F3 F3 &&
git diff-files --quiet &&
git rebase --continue
'
test_expect_success "rebase $action --continue honors rerere.autoUpdate" '
prepare &&
test_config rerere.autoupdate true &&
test_must_fail git rebase $action main topic &&
test_cmp expected-F2 F2 &&
git diff-files --quiet &&
test_must_fail git rebase --continue &&
test_cmp expected-F3 F3 &&
git diff-files --quiet &&
git rebase --continue
'
test_expect_success "rebase $action --continue remembers --no-rerere-autoupdate" '
prepare &&
test_config rerere.autoupdate true &&
test_must_fail git rebase $action --no-rerere-autoupdate main topic &&
test_cmp expected-F2 F2 &&
test_must_fail git diff-files --quiet &&
git add F2 &&
test_must_fail git rebase --continue &&
test_cmp expected-F3 F3 &&
test_must_fail git diff-files --quiet &&
git add F3 &&
git rebase --continue
'
}
test_rerere_autoupdate --apply
test_rerere_autoupdate -m
GIT_SEQUENCE_EDITOR=: && export GIT_SEQUENCE_EDITOR
test_rerere_autoupdate -i
unset GIT_SEQUENCE_EDITOR
test_expect_success 'the todo command "break" works' '
rm -f execed &&
FAKE_LINES="break b exec_>execed" git rebase -i HEAD &&
test_path_is_missing execed &&
git rebase --continue &&
test_path_is_missing execed &&
git rebase --continue &&
test_path_is_file execed
'
test_expect_success '--reschedule-failed-exec' '
test_when_finished "git rebase --abort" &&
test_must_fail git rebase -x false --reschedule-failed-exec HEAD^ &&
grep "^exec false" .git/rebase-merge/git-rebase-todo &&
git rebase --abort &&
test_must_fail git -c rebase.rescheduleFailedExec=true \
rebase -x false HEAD^ 2>err &&
grep "^exec false" .git/rebase-merge/git-rebase-todo &&
test_i18ngrep "has been rescheduled" err
'
test_expect_success 'rebase.rescheduleFailedExec only affects `rebase -i`' '
test_config rebase.rescheduleFailedExec true &&
test_must_fail git rebase -x false HEAD^ &&
grep "^exec false" .git/rebase-merge/git-rebase-todo &&
git rebase --abort &&
git rebase HEAD^
'
test_expect_success 'rebase.rescheduleFailedExec=true & --no-reschedule-failed-exec' '
test_when_finished "git rebase --abort" &&
test_config rebase.rescheduleFailedExec true &&
test_must_fail git rebase -x false --no-reschedule-failed-exec HEAD~2 &&
test_must_fail git rebase --continue 2>err &&
! grep "has been rescheduled" err
'
test_expect_success 'new rebase.rescheduleFailedExec=true setting in an ongoing rebase is ignored' '
test_when_finished "git rebase --abort" &&
test_must_fail git rebase -x false HEAD~2 &&
test_config rebase.rescheduleFailedExec true &&
test_must_fail git rebase --continue 2>err &&
! grep "has been rescheduled" err
'
test_expect_success 'there is no --no-reschedule-failed-exec in an ongoing rebase' '
test_when_finished "git rebase --abort" &&
test_must_fail git rebase -x false HEAD~2 &&
test_expect_code 129 git rebase --continue --no-reschedule-failed-exec &&
test_expect_code 129 git rebase --edit-todo --no-reschedule-failed-exec
'
test_orig_head_helper () {
test_when_finished 'git rebase --abort &&
git checkout topic &&
git reset --hard commit-new-file-F2-on-topic-branch' &&
git update-ref -d ORIG_HEAD &&
test_must_fail git rebase "$@" &&
test_cmp_rev ORIG_HEAD commit-new-file-F2-on-topic-branch
}
test_orig_head () {
type=$1
test_expect_success "rebase $type sets ORIG_HEAD correctly" '
git checkout topic &&
git reset --hard commit-new-file-F2-on-topic-branch &&
test_orig_head_helper $type main
'
test_expect_success "rebase $type <upstream> <branch> sets ORIG_HEAD correctly" '
git checkout main &&
test_orig_head_helper $type main topic
'
}
test_orig_head --apply
test_orig_head --merge
test_done