git/t/t3501-revert-cherry-pick.sh
Junio C Hamano 17381ab62a Merge branch 'bl/cherry-pick-empty'
Allow git-cherry-pick(1) to automatically drop redundant commits via
a new `--empty` option, similar to the `--empty` options for
git-rebase(1) and git-am(1). Includes a soft deprecation of
`--keep-redundant-commits` as well as some related docs changes and
sequencer code cleanup.

* bl/cherry-pick-empty:
  cherry-pick: add `--empty` for more robust redundant commit handling
  cherry-pick: enforce `--keep-redundant-commits` incompatibility
  sequencer: do not require `allow_empty` for redundant commit options
  sequencer: handle unborn branch with `--allow-empty`
  rebase: update `--empty=ask` to `--empty=stop`
  docs: clean up `--empty` formatting in git-rebase(1) and git-am(1)
  docs: address inaccurate `--empty` default with `--exec`
2024-04-03 10:56:20 -07:00

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#!/bin/sh
test_description='miscellaneous basic tests for cherry-pick and revert'
GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
TEST_PASSES_SANITIZE_LEAK=true
. ./test-lib.sh
test_expect_success setup '
for l in a b c d e f g h i j k l m n o
do
echo $l$l$l$l$l$l$l$l$l || return 1
done >oops &&
test_tick &&
git add oops &&
git commit -m initial &&
git tag initial &&
test_tick &&
echo "Add extra line at the end" >>oops &&
git commit -a -m added &&
git tag added &&
test_tick &&
git mv oops spoo &&
git commit -m rename1 &&
git tag rename1 &&
test_tick &&
git checkout -b side initial &&
git mv oops opos &&
git commit -m rename2 &&
git tag rename2
'
test_expect_success 'cherry-pick --nonsense' '
pos=$(git rev-parse HEAD) &&
git diff --exit-code HEAD &&
test_must_fail git cherry-pick --nonsense 2>msg &&
git diff --exit-code HEAD "$pos" &&
test_grep "[Uu]sage:" msg
'
test_expect_success 'revert --nonsense' '
pos=$(git rev-parse HEAD) &&
git diff --exit-code HEAD &&
test_must_fail git revert --nonsense 2>msg &&
git diff --exit-code HEAD "$pos" &&
test_grep "[Uu]sage:" msg
'
# the following two test cherry-pick and revert with renames
#
# --
# + rename2: renames oops to opos
# + rename1: renames oops to spoo
# + added: adds extra line to oops
# ++ initial: has lines in oops
test_expect_success 'cherry-pick after renaming branch' '
git checkout rename2 &&
git cherry-pick added &&
test_cmp_rev rename2 HEAD^ &&
grep "Add extra line at the end" opos &&
git reflog -1 | grep cherry-pick
'
test_expect_success 'revert after renaming branch' '
git checkout rename1 &&
git revert added &&
test_cmp_rev rename1 HEAD^ &&
test_path_is_file spoo &&
test_cmp_rev initial:oops HEAD:spoo &&
git reflog -1 | grep revert
'
test_expect_success 'cherry-pick on stat-dirty working tree' '
git clone . copy &&
(
cd copy &&
git checkout initial &&
test-tool chmtime +40 oops &&
git cherry-pick added
)
'
test_expect_success 'revert forbidden on dirty working tree' '
echo content >extra_file &&
git add extra_file &&
test_must_fail git revert HEAD 2>errors &&
test_grep "your local changes would be overwritten by " errors
'
test_expect_success 'cherry-pick on unborn branch' '
git switch --orphan unborn &&
git rm --cached -r . &&
git cherry-pick initial &&
git diff --exit-code initial &&
test_cmp_rev ! initial HEAD
'
test_expect_success 'cherry-pick on unborn branch with --allow-empty' '
git checkout --detach &&
git branch -D unborn &&
git switch --orphan unborn &&
git cherry-pick initial --allow-empty &&
git diff --exit-code initial &&
test_cmp_rev ! initial HEAD
'
test_expect_success 'cherry-pick "-" to pick from previous branch' '
git checkout unborn &&
test_commit to-pick actual content &&
git checkout main &&
git cherry-pick - &&
echo content >expect &&
test_cmp expect actual
'
test_expect_success 'cherry-pick "-" is meaningless without checkout' '
test_create_repo afresh &&
(
cd afresh &&
test_commit one &&
test_commit two &&
test_commit three &&
test_must_fail git cherry-pick -
)
'
test_expect_success 'cherry-pick "-" works with arguments' '
git checkout -b side-branch &&
test_commit change actual change &&
git checkout main &&
git cherry-pick -s - &&
echo "Signed-off-by: C O Mitter <committer@example.com>" >expect &&
git cat-file commit HEAD | grep ^Signed-off-by: >signoff &&
test_cmp expect signoff &&
echo change >expect &&
test_cmp expect actual
'
test_expect_success 'cherry-pick works with dirty renamed file' '
test_commit to-rename &&
git checkout -b unrelated &&
test_commit unrelated &&
git checkout @{-1} &&
git mv to-rename.t renamed &&
test_tick &&
git commit -m renamed &&
echo modified >renamed &&
git cherry-pick refs/heads/unrelated &&
test $(git rev-parse :0:renamed) = $(git rev-parse HEAD~2:to-rename.t) &&
grep -q "^modified$" renamed
'
test_expect_success 'advice from failed revert' '
test_when_finished "git reset --hard" &&
test_commit --no-tag "add dream" dream dream &&
dream_oid=$(git rev-parse --short HEAD) &&
cat <<-EOF >expected &&
error: could not revert $dream_oid... add dream
hint: After resolving the conflicts, mark them with
hint: "git add/rm <pathspec>", then run
hint: "git revert --continue".
hint: You can instead skip this commit with "git revert --skip".
hint: To abort and get back to the state before "git revert",
hint: run "git revert --abort".
hint: Disable this message with "git config advice.mergeConflict false"
EOF
test_commit --append --no-tag "double-add dream" dream dream &&
test_must_fail git revert HEAD^ 2>actual &&
test_cmp expected actual
'
test_expect_subject () {
echo "$1" >expect &&
git log -1 --pretty=%s >actual &&
test_cmp expect actual
}
test_expect_success 'titles of fresh reverts' '
test_commit --no-tag A file1 &&
test_commit --no-tag B file1 &&
git revert --no-edit HEAD &&
test_expect_subject "Revert \"B\"" &&
git revert --no-edit HEAD &&
test_expect_subject "Reapply \"B\"" &&
git revert --no-edit HEAD &&
test_expect_subject "Revert \"Reapply \"B\"\""
'
test_expect_success 'title of legacy double revert' '
test_commit --no-tag "Revert \"Revert \"B\"\"" file1 &&
git revert --no-edit HEAD &&
test_expect_subject "Revert \"Revert \"Revert \"B\"\"\""
'
test_expect_success 'identification of reverted commit (default)' '
test_commit to-ident &&
test_when_finished "git reset --hard to-ident" &&
git checkout --detach to-ident &&
git revert --no-edit HEAD &&
git cat-file commit HEAD >actual.raw &&
grep "^This reverts " actual.raw >actual &&
echo "This reverts commit $(git rev-parse HEAD^)." >expect &&
test_cmp expect actual
'
test_expect_success 'identification of reverted commit (--reference)' '
git checkout --detach to-ident &&
git revert --reference --no-edit HEAD &&
git cat-file commit HEAD >actual.raw &&
grep "^This reverts " actual.raw >actual &&
echo "This reverts commit $(git show -s --pretty=reference HEAD^)." >expect &&
test_cmp expect actual
'
test_expect_success 'identification of reverted commit (revert.reference)' '
git checkout --detach to-ident &&
git -c revert.reference=true revert --no-edit HEAD &&
git cat-file commit HEAD >actual.raw &&
grep "^This reverts " actual.raw >actual &&
echo "This reverts commit $(git show -s --pretty=reference HEAD^)." >expect &&
test_cmp expect actual
'
test_expect_success 'cherry-pick is unaware of --reference (for now)' '
test_when_finished "git reset --hard" &&
test_must_fail git cherry-pick --reference HEAD 2>actual &&
grep "^usage: git cherry-pick" actual
'
test_done