#!/bin/sh
test_description='git filter-branch'
GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
TEST_PASSES_SANITIZE_LEAK=true
. ./test-lib.sh
. "$TEST_DIRECTORY/lib-gpg.sh"
test_expect_success 'setup' '
test_commit A &&
GIT_COMMITTER_DATE="@0 +0000" GIT_AUTHOR_DATE="@0 +0000" &&
test_commit --notick B &&
git checkout -b branch B &&
test_commit D &&
mkdir dir &&
test_commit dir/D &&
test_commit E &&
git checkout main &&
test_commit C &&
git checkout branch &&
git merge C &&
git tag F &&
test_commit G &&
test_commit H
'
# * (HEAD, branch) H
# * G
# * Merge commit 'C' into branch
# |\
# | * (main) C
# * | E
# * | dir/D
# * | D
# |/
# * B
# * A
H=$(git rev-parse H)
test_expect_success 'rewrite identically' '
git filter-branch branch
'
test_expect_success 'result is really identical' '
test $H = $(git rev-parse HEAD)
'
test_expect_success 'rewrite bare repository identically' '
(git config core.bare true && cd .git &&
git filter-branch branch > filter-output 2>&1 &&
! grep fatal filter-output)
'
git config core.bare false
test_expect_success 'result is really identical' '
test $H = $(git rev-parse HEAD)
'
TRASHDIR=$(pwd)
test_expect_success 'correct GIT_DIR while using -d' '
mkdir drepo &&
( cd drepo &&
git init &&
test_commit drepo &&
git filter-branch -d "$TRASHDIR/dfoo" \
--index-filter "cp \"$TRASHDIR\"/dfoo/backup-refs \"$TRASHDIR\"" \
) &&
grep drepo "$TRASHDIR/backup-refs"
'
test_expect_success 'tree-filter works with -d' '
git init drepo-tree &&
(
cd drepo-tree &&
test_commit one &&
git filter-branch -d "$TRASHDIR/dfoo" \
--tree-filter "echo changed >one.t" &&
echo changed >expect &&
git cat-file blob HEAD:one.t >actual &&
test_cmp expect actual &&
test_cmp one.t actual
)
'
test_expect_success 'Fail if commit filter fails' '
test_must_fail git filter-branch -f --commit-filter "exit 1" HEAD
'
test_expect_success 'rewrite, renaming a specific file' '
git filter-branch -f --tree-filter "mv D.t doh || :" HEAD
'
test_expect_success 'test that the file was renamed' '
test D = "$(git show HEAD:doh --)" &&
! test -f D.t &&
test -f doh &&
test D = "$(cat doh)"
'
test_expect_success 'rewrite, renaming a specific directory' '
git filter-branch -f --tree-filter "mv dir diroh || :" HEAD
'
test_expect_success 'test that the directory was renamed' '
test dir/D = "$(git show HEAD:diroh/D.t --)" &&
! test -d dir &&
test -d diroh &&
! test -d diroh/dir &&
test -f diroh/D.t &&
test dir/D = "$(cat diroh/D.t)"
'
V=$(git rev-parse HEAD)
test_expect_success 'populate --state-branch' '
git filter-branch --state-branch state -f --tree-filter "touch file || :" HEAD
'
W=$(git rev-parse HEAD)
test_expect_success 'using --state-branch to skip already rewritten commits' '
test_when_finished git reset --hard $V &&
git reset --hard $V &&
git filter-branch --state-branch state -f --tree-filter "touch file || :" HEAD &&
test_cmp_rev $W HEAD
'
git tag oldD HEAD~4
test_expect_success 'rewrite one branch, keeping a side branch' '
git branch modD oldD &&
git filter-branch -f --tree-filter "mv B.t boh || :" D..modD
'
test_expect_success 'common ancestor is still common (unchanged)' '
test "$(git merge-base modD D)" = "$(git rev-parse B)"
'
test_expect_success 'filter subdirectory only' '
mkdir subdir &&
touch subdir/new &&
git add subdir/new &&
test_tick &&
git commit -m "subdir" &&
echo H > A.t &&
test_tick &&
git commit -m "not subdir" A.t &&
echo A > subdir/new &&
test_tick &&
git commit -m "again subdir" subdir/new &&
git rm A.t &&
test_tick &&
git commit -m "again not subdir" &&
git branch sub &&
git branch sub-earlier HEAD~2 &&
git filter-branch -f --subdirectory-filter subdir \
refs/heads/sub refs/heads/sub-earlier
'
test_expect_success 'subdirectory filter result looks okay' '
test 2 = $(git rev-list sub | wc -l) &&
git show sub:new &&
test_must_fail git show sub:subdir &&
git show sub-earlier:new &&
test_must_fail git show sub-earlier:subdir
'
test_expect_success 'more setup' '
git checkout main &&
mkdir subdir &&
echo A > subdir/new &&
git add subdir/new &&
test_tick &&
git commit -m "subdir on main" subdir/new &&
git rm A.t &&
test_tick &&
git commit -m "again subdir on main" &&
git merge branch
'
test_expect_success 'use index-filter to move into a subdirectory' '
git branch directorymoved &&
git filter-branch -f --index-filter \
"git ls-files -s | sed \"s- -&newsubdir/-\" |
GIT_INDEX_FILE=\$GIT_INDEX_FILE.new \
git update-index --index-info &&
mv \"\$GIT_INDEX_FILE.new\" \"\$GIT_INDEX_FILE\"" directorymoved &&
git diff --exit-code HEAD directorymoved:newsubdir
'
test_expect_success 'stops when msg filter fails' '
old=$(git rev-parse HEAD) &&
test_must_fail git filter-branch -f --msg-filter false HEAD &&
test $old = $(git rev-parse HEAD) &&
rm -rf .git-rewrite
'
test_expect_success 'author information is preserved' '
: > i &&
git add i &&
test_tick &&
GIT_AUTHOR_NAME="B V Uips" git commit -m bvuips &&
git branch preserved-author &&
(sane_unset GIT_AUTHOR_NAME &&
git filter-branch -f --msg-filter "cat; \
test \$GIT_COMMIT != $(git rev-parse main) || \
echo Hallo" \
preserved-author) &&
git rev-list --author="B V Uips" preserved-author >actual &&
test_line_count = 1 actual
'
test_expect_success "remove a certain author's commits" '
echo i > i &&
test_tick &&
git commit -m i i &&
git branch removed-author &&
git filter-branch -f --commit-filter "\
if [ \"\$GIT_AUTHOR_NAME\" = \"B V Uips\" ];\
then\
skip_commit \"\$@\";
else\
git commit-tree \"\$@\";\
fi" removed-author &&
cnt1=$(git rev-list main | wc -l) &&
cnt2=$(git rev-list removed-author | wc -l) &&
test $cnt1 -eq $(($cnt2 + 1)) &&
git rev-list --author="B V Uips" removed-author >actual &&
test_line_count = 0 actual
'
test_expect_success 'barf on invalid name' '
test_must_fail git filter-branch -f main xy-problem &&
test_must_fail git filter-branch -f HEAD^
'
test_expect_success '"map" works in commit filter' '
git filter-branch -f --commit-filter "\
parent=\$(git rev-parse \$GIT_COMMIT^) &&
mapped=\$(map \$parent) &&
actual=\$(echo \"\$@\" | sed \"s/^.*-p //\") &&
test \$mapped = \$actual &&
git commit-tree \"\$@\";" main~2..main &&
git rev-parse --verify main
'
test_expect_success 'Name needing quotes' '
git checkout -b rerere A &&
mkdir foo &&
name="れれれ" &&
>foo/$name &&
git add foo &&
git commit -m "Adding a file" &&
git filter-branch --tree-filter "rm -fr foo" &&
test_must_fail git ls-files --error-unmatch "foo/$name" &&
test $(git rev-parse --verify rerere) != $(git rev-parse --verify A)
'
test_expect_success 'Subdirectory filter with disappearing trees' '
git reset --hard &&
git checkout main &&
mkdir foo &&
touch foo/bar &&
git add foo &&
test_tick &&
git commit -m "Adding foo" &&
git rm -r foo &&
test_tick &&
git commit -m "Removing foo" &&
mkdir foo &&
touch foo/bar &&
git add foo &&
test_tick &&
git commit -m "Re-adding foo" &&
git filter-branch -f --subdirectory-filter foo &&
git rev-list main >actual &&
test_line_count = 3 actual
'
test_expect_success 'Tag name filtering retains tag message' '
git tag -m atag T &&
git cat-file tag T > expect &&
git filter-branch -f --tag-name-filter cat &&
git cat-file tag T > actual &&
test_cmp expect actual
'
faux_gpg_tag='object XXXXXX
type commit
tag S
tagger T A Gger <[email protected]> 1206026339 -0500
This is a faux gpg signed tag.
-----BEGIN PGP SIGNATURE-----
Version: FauxGPG v0.0.0 (FAUX/Linux)
gdsfoewhxu/6l06f1kxyxhKdZkrcbaiOMtkJUA9ITAc1mlamh0ooasxkH1XwMbYQ
acmwXaWET20H0GeAGP+7vow=
=agpO
-----END PGP SIGNATURE-----
'
test_expect_success 'Tag name filtering strips gpg signature' '
sha1=$(git rev-parse HEAD) &&
sha1t=$(echo "$faux_gpg_tag" | sed -e s/XXXXXX/$sha1/ | git mktag) &&
git update-ref "refs/tags/S" "$sha1t" &&
echo "$faux_gpg_tag" | sed -e s/XXXXXX/$sha1/ | head -n 6 > expect &&
git filter-branch -f --tag-name-filter cat &&
git cat-file tag S > actual &&
test_cmp expect actual
'
test_expect_success GPG 'Filtering retains message of gpg signed commit' '
mkdir gpg &&
touch gpg/foo &&
git add gpg &&
test_tick &&
git commit -S -m "Adding gpg" &&
git log -1 --format="%s" > expect &&
git filter-branch -f --msg-filter "cat" &&
git log -1 --format="%s" > actual &&
test_cmp expect actual
'
test_expect_success 'Tag name filtering allows slashes in tag names' '
git tag -m tag-with-slash X/1 &&
git cat-file tag X/1 | sed -e s,X/1,X/2, > expect &&
git filter-branch -f --tag-name-filter "echo X/2" &&
git cat-file tag X/2 > actual &&
test_cmp expect actual
'
test_expect_success 'setup --prune-empty comparisons' '
git checkout --orphan main-no-a &&
git rm -rf . &&
unset test_tick &&
test_tick &&
GIT_COMMITTER_DATE="@0 +0000" GIT_AUTHOR_DATE="@0 +0000" &&
test_commit --notick B B.t B Bx &&
git checkout -b branch-no-a Bx &&
test_commit D D.t D Dx &&
mkdir dir &&
test_commit dir/D dir/D.t dir/D dir/Dx &&
test_commit E E.t E Ex &&
git checkout main-no-a &&
test_commit C C.t C Cx &&
git checkout branch-no-a &&
git merge Cx -m "Merge tag '\''C'\'' into branch" &&
git tag Fx &&
test_commit G G.t G Gx &&
test_commit H H.t H Hx &&
git checkout branch
'
test_expect_success 'Prune empty commits' '
git rev-list HEAD > expect &&
test_commit to_remove &&
git filter-branch -f --index-filter "git update-index --remove to_remove.t" --prune-empty HEAD &&
git rev-list HEAD > actual &&
test_cmp expect actual
'
test_expect_success 'prune empty collapsed merges' '
test_config merge.ff false &&
git rev-list HEAD >expect &&
test_commit to_remove_2 &&
git reset --hard HEAD^ &&
test_merge non-ff to_remove_2 &&
git filter-branch -f --index-filter "git update-index --remove to_remove_2.t" --prune-empty HEAD &&
git rev-list HEAD >actual &&
test_cmp expect actual
'
test_expect_success 'prune empty works even without index/tree filters' '
git rev-list HEAD >expect &&
git commit --allow-empty -m empty &&
git filter-branch -f --prune-empty HEAD &&
git rev-list HEAD >actual &&
test_cmp expect actual
'
test_expect_success '--prune-empty is able to prune root commit' '
git rev-list branch-no-a >expect &&
git branch testing H &&
git filter-branch -f --prune-empty --index-filter "git update-index --remove A.t" testing &&
git rev-list testing >actual &&
git branch -D testing &&
test_cmp expect actual
'
test_expect_success '--prune-empty is able to prune entire branch' '
git branch prune-entire B &&
git filter-branch -f --prune-empty --index-filter "git update-index --remove A.t B.t" prune-entire &&
test_must_fail git rev-parse refs/heads/prune-entire &&
test_must_fail git reflog exists refs/heads/prune-entire
'
test_expect_success '--remap-to-ancestor with filename filters' '
git checkout main &&
git reset --hard A &&
test_commit add-foo foo 1 &&
git branch moved-foo &&
test_commit add-bar bar a &&
git branch invariant &&
orig_invariant=$(git rev-parse invariant) &&
git branch moved-bar &&
test_commit change-foo foo 2 &&
git filter-branch -f --remap-to-ancestor \
moved-foo moved-bar A..main \
-- -- foo &&
test $(git rev-parse moved-foo) = $(git rev-parse moved-bar) &&
test $(git rev-parse moved-foo) = $(git rev-parse main^) &&
test $orig_invariant = $(git rev-parse invariant)
'
test_expect_success 'automatic remapping to ancestor with filename filters' '
git checkout main &&
git reset --hard A &&
test_commit add-foo2 foo 1 &&
git branch moved-foo2 &&
test_commit add-bar2 bar a &&
git branch invariant2 &&
orig_invariant=$(git rev-parse invariant2) &&
git branch moved-bar2 &&
test_commit change-foo2 foo 2 &&
git filter-branch -f \
moved-foo2 moved-bar2 A..main \
-- -- foo &&
test $(git rev-parse moved-foo2) = $(git rev-parse moved-bar2) &&
test $(git rev-parse moved-foo2) = $(git rev-parse main^) &&
test $orig_invariant = $(git rev-parse invariant2)
'
test_expect_success 'setup submodule' '
rm -fr ?* .git &&
git init &&
test_commit file &&
mkdir submod &&
submodurl="$PWD/submod" &&
( cd submod &&
git init &&
test_commit file-in-submod ) &&
git submodule add "$submodurl" &&
git commit -m "added submodule" &&
test_commit add-file &&
( cd submod && test_commit add-in-submodule ) &&
git add submod &&
git commit -m "changed submodule" &&
git branch original HEAD
'
orig_head=$(git show-ref --hash --head HEAD)
test_expect_success 'rewrite submodule with another content' '
git filter-branch --tree-filter "test -d submod && {
rm -rf submod &&
git rm -rf --quiet submod &&
mkdir submod &&
: > submod/file
} || :" HEAD &&
test $orig_head != $(git show-ref --hash --head HEAD)
'
test_expect_success 'replace submodule revision' '
invalid=$(test_oid numeric) &&
git reset --hard original &&
git filter-branch -f --tree-filter \
"if git ls-files --error-unmatch -- submod > /dev/null 2>&1
then git update-index --cacheinfo 160000 $invalid submod
fi" HEAD &&
test $orig_head != $(git show-ref --hash --head HEAD)
'
test_expect_success 'filter commit message without trailing newline' '
git reset --hard original &&
commit=$(printf "no newline" | git commit-tree HEAD^{tree}) &&
git update-ref refs/heads/no-newline $commit &&
git filter-branch -f refs/heads/no-newline &&
echo $commit >expect &&
git rev-parse refs/heads/no-newline >actual &&
test_cmp expect actual
'
test_expect_success 'tree-filter deals with object name vs pathname ambiguity' '
test_when_finished "git reset --hard original" &&
ambiguous=$(git rev-list -1 HEAD) &&
git filter-branch --tree-filter "mv file.t $ambiguous" HEAD^.. &&
git show HEAD:$ambiguous
'
test_expect_success 'rewrite repository including refs that point at non-commit object' '
test_when_finished "git reset --hard original" &&
tree=$(git rev-parse HEAD^{tree}) &&
test_when_finished "git replace -d $tree" &&
echo A >new &&
git add new &&
new_tree=$(git write-tree) &&
git replace $tree $new_tree &&
git tag -a -m "tag to a tree" treetag $new_tree &&
git reset --hard HEAD &&
git filter-branch -f -- --all >filter-output 2>&1 &&
! grep fatal filter-output
'
test_expect_success 'filter-branch handles ref deletion' '
git switch --orphan empty-commit &&
git commit --allow-empty -m "empty commit" &&
git tag empty &&
git branch to-delete &&
git filter-branch -f --prune-empty to-delete >out 2>&1 &&
grep "to-delete.*was deleted" out &&
test_must_fail git rev-parse --verify to-delete
'
test_expect_success 'filter-branch handles ref rewrite' '
git checkout empty &&
test_commit to-drop &&
git branch rewrite &&
git filter-branch -f \
--index-filter "git rm --ignore-unmatch --cached to-drop.t" \
rewrite >out 2>&1 &&
grep "rewrite.*was rewritten" out &&
! grep -i warning out &&
git diff-tree empty rewrite
'
test_expect_success 'filter-branch handles ancestor rewrite' '
test_commit to-exclude &&
git branch ancestor &&
git filter-branch -f ancestor -- :^to-exclude.t >out 2>&1 &&
grep "ancestor.*was rewritten" out &&
! grep -i warning out &&
git diff-tree HEAD^ ancestor
'
test_done
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