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git/t/t5304-prune.sh
Junio C Hamano 58ecb2e383 Merge branch 'tb/gc-recent-object-hook' 
"git pack-objects" learned to invoke a new hook program that
enumerates extra objects to be used as anchoring points to keep
otherwise unreachable objects in cruft packs.

* tb/gc-recent-object-hook:
  gc: introduce `gc.recentObjectsHook`
  reachable.c: extract `obj_is_recent()`
2023-06-23 11:21:17 -07:00

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#!/bin/sh
#
# Copyright (c) 2008 Johannes E. Schindelin
#
test_description='prune'
GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
. ./test-lib.sh
day=$((60*60*24))
week=$(($day*7))
add_blob() {
before=$(git count-objects | sed "s/ .*//") &&
BLOB=$(echo aleph_0 | git hash-object -w --stdin) &&
BLOB_FILE=.git/objects/$(echo $BLOB | sed "s/^../&\//") &&
test $((1 + $before)) = $(git count-objects | sed "s/ .*//") &&
test_path_is_file $BLOB_FILE &&
test-tool chmtime =+0 $BLOB_FILE
}
test_expect_success setup '
>file &&
git add file &&
test_tick &&
git commit -m initial &&
git gc
'
test_expect_success 'bare repo prune is quiet without $GIT_DIR/objects/pack' '
git clone -q --shared --template= --bare . bare.git &&
rmdir bare.git/objects/pack &&
git --git-dir=bare.git prune --no-progress 2>prune.err &&
test_must_be_empty prune.err &&
rm -r bare.git prune.err
'
test_expect_success 'prune stale packs' '
orig_pack=$(echo .git/objects/pack/*.pack) &&
>.git/objects/tmp_1.pack &&
>.git/objects/tmp_2.pack &&
test-tool chmtime =-86501 .git/objects/tmp_1.pack &&
git prune --expire 1.day &&
test_path_is_file $orig_pack &&
test_path_is_file .git/objects/tmp_2.pack &&
test_path_is_missing .git/objects/tmp_1.pack
'
test_expect_success 'prune --expire' '
add_blob &&
git prune --expire=1.hour.ago &&
test $((1 + $before)) = $(git count-objects | sed "s/ .*//") &&
test_path_is_file $BLOB_FILE &&
test-tool chmtime =-86500 $BLOB_FILE &&
git prune --expire 1.day &&
test $before = $(git count-objects | sed "s/ .*//") &&
test_path_is_missing $BLOB_FILE
'
test_expect_success 'gc: implicit prune --expire' '
add_blob &&
test-tool chmtime =-$((2*$week-30)) $BLOB_FILE &&
git gc --no-cruft &&
test $((1 + $before)) = $(git count-objects | sed "s/ .*//") &&
test_path_is_file $BLOB_FILE &&
test-tool chmtime =-$((2*$week+1)) $BLOB_FILE &&
git gc --no-cruft &&
test $before = $(git count-objects | sed "s/ .*//") &&
test_path_is_missing $BLOB_FILE
'
test_expect_success 'gc: refuse to start with invalid gc.pruneExpire' '
test_when_finished "rm -rf repo" &&
git init repo &&
>repo/.git/config &&
git -C repo config gc.pruneExpire invalid &&
cat >expect <<-\EOF &&
error: Invalid gc.pruneexpire: '\''invalid'\''
fatal: bad config variable '\''gc.pruneexpire'\'' in file '\''.git/config'\'' at line 2
EOF
test_must_fail git -C repo gc 2>actual &&
test_cmp expect actual
'
test_expect_success 'gc: start with ok gc.pruneExpire' '
git config gc.pruneExpire 2.days.ago &&
git gc --no-cruft
'
test_expect_success 'prune: prune nonsense parameters' '
test_must_fail git prune garbage &&
test_must_fail git prune --- &&
test_must_fail git prune --no-such-option
'
test_expect_success 'prune: prune unreachable heads' '
git config core.logAllRefUpdates false &&
>file2 &&
git add file2 &&
git commit -m temporary &&
tmp_head=$(git rev-list -1 HEAD) &&
git reset HEAD^ &&
git reflog expire --all &&
git prune &&
test_must_fail git reset $tmp_head --
'
test_expect_success 'prune: do not prune detached HEAD with no reflog' '
git checkout --detach --quiet &&
git commit --allow-empty -m "detached commit" &&
git reflog expire --all &&
git prune -n >prune_actual &&
test_must_be_empty prune_actual
'
test_expect_success 'prune: prune former HEAD after checking out branch' '
head_oid=$(git rev-parse HEAD) &&
git checkout --quiet main &&
git reflog expire --all &&
git prune -v >prune_actual &&
grep "$head_oid" prune_actual
'
test_expect_success 'prune: do not prune heads listed as an argument' '
>file2 &&
git add file2 &&
git commit -m temporary &&
tmp_head=$(git rev-list -1 HEAD) &&
git reset HEAD^ &&
git prune -- $tmp_head &&
git reset $tmp_head --
'
test_expect_success 'gc --no-prune' '
add_blob &&
test-tool chmtime =-$((5001*$day)) $BLOB_FILE &&
git config gc.pruneExpire 2.days.ago &&
git gc --no-prune --no-cruft &&
test 1 = $(git count-objects | sed "s/ .*//") &&
test_path_is_file $BLOB_FILE
'
test_expect_success 'gc respects gc.pruneExpire' '
git config gc.pruneExpire 5002.days.ago &&
git gc --no-cruft &&
test_path_is_file $BLOB_FILE &&
git config gc.pruneExpire 5000.days.ago &&
git gc --no-cruft &&
test_path_is_missing $BLOB_FILE
'
test_expect_success 'gc --prune=<date>' '
add_blob &&
test-tool chmtime =-$((5001*$day)) $BLOB_FILE &&
git gc --prune=5002.days.ago --no-cruft &&
test_path_is_file $BLOB_FILE &&
git gc --prune=5000.days.ago --no-cruft &&
test_path_is_missing $BLOB_FILE
'
test_expect_success 'gc --prune=never' '
add_blob &&
git gc --prune=never --no-cruft &&
test_path_is_file $BLOB_FILE &&
git gc --prune=now --no-cruft &&
test_path_is_missing $BLOB_FILE
'
test_expect_success 'gc respects gc.pruneExpire=never' '
git config gc.pruneExpire never &&
add_blob &&
git gc --no-cruft &&
test_path_is_file $BLOB_FILE &&
git config gc.pruneExpire now &&
git gc --no-cruft &&
test_path_is_missing $BLOB_FILE
'
test_expect_success 'prune --expire=never' '
add_blob &&
git prune --expire=never &&
test_path_is_file $BLOB_FILE &&
git prune &&
test_path_is_missing $BLOB_FILE
'
test_expect_success 'gc: prune old objects after local clone' '
add_blob &&
test-tool chmtime =-$((2*$week+1)) $BLOB_FILE &&
git clone --no-hardlinks . aclone &&
(
cd aclone &&
test 1 = $(git count-objects | sed "s/ .*//") &&
test_path_is_file $BLOB_FILE &&
git gc --prune --no-cruft &&
test 0 = $(git count-objects | sed "s/ .*//") &&
test_path_is_missing $BLOB_FILE
)
'
test_expect_success 'garbage report in count-objects -v' '
test_when_finished "rm -f .git/objects/pack/fake*" &&
test_when_finished "rm -f .git/objects/pack/foo*" &&
>.git/objects/pack/foo &&
>.git/objects/pack/foo.bar &&
>.git/objects/pack/foo.keep &&
>.git/objects/pack/foo.pack &&
>.git/objects/pack/fake.bar &&
>.git/objects/pack/fake.keep &&
>.git/objects/pack/fake.pack &&
>.git/objects/pack/fake.idx &&
>.git/objects/pack/fake2.keep &&
>.git/objects/pack/fake3.idx &&
git count-objects -v 2>stderr &&
grep "index file .git/objects/pack/fake.idx is too small" stderr &&
grep "^warning:" stderr | sort >actual &&
cat >expected <<\EOF &&
warning: garbage found: .git/objects/pack/fake.bar
warning: garbage found: .git/objects/pack/foo
warning: garbage found: .git/objects/pack/foo.bar
warning: no corresponding .idx or .pack: .git/objects/pack/fake2.keep
warning: no corresponding .idx: .git/objects/pack/foo.keep
warning: no corresponding .idx: .git/objects/pack/foo.pack
warning: no corresponding .pack: .git/objects/pack/fake3.idx
EOF
test_cmp expected actual
'
test_expect_success 'clean pack garbage with gc' '
test_when_finished "rm -f .git/objects/pack/fake*" &&
test_when_finished "rm -f .git/objects/pack/foo*" &&
>.git/objects/pack/foo.keep &&
>.git/objects/pack/foo.pack &&
>.git/objects/pack/fake.idx &&
>.git/objects/pack/fake2.keep &&
>.git/objects/pack/fake2.idx &&
>.git/objects/pack/fake3.keep &&
git gc --no-cruft &&
git count-objects -v 2>stderr &&
grep "^warning:" stderr | sort >actual &&
cat >expected <<\EOF &&
warning: no corresponding .idx or .pack: .git/objects/pack/fake3.keep
warning: no corresponding .idx: .git/objects/pack/foo.keep
warning: no corresponding .idx: .git/objects/pack/foo.pack
EOF
test_cmp expected actual
'
test_expect_success 'prune .git/shallow' '
oid=$(echo hi|git commit-tree HEAD^{tree}) &&
echo $oid >.git/shallow &&
git prune --dry-run >out &&
grep $oid .git/shallow &&
grep $oid out &&
git prune &&
test_path_is_missing .git/shallow
'
test_expect_success 'prune .git/shallow when there are no loose objects' '
oid=$(echo hi|git commit-tree HEAD^{tree}) &&
echo $oid >.git/shallow &&
git update-ref refs/heads/shallow-tip $oid &&
git repack -ad &&
# verify assumption that all loose objects are gone
git count-objects | grep ^0 &&
git prune &&
echo $oid >expect &&
test_cmp expect .git/shallow
'
test_expect_success 'prune: handle alternate object database' '
test_create_repo A &&
git -C A commit --allow-empty -m "initial commit" &&
git clone --shared A B &&
git -C B commit --allow-empty -m "next commit" &&
git -C B prune
'
test_expect_success 'prune: handle index in multiple worktrees' '
git worktree add second-worktree &&
echo "new blob for second-worktree" >second-worktree/blob &&
git -C second-worktree add blob &&
git prune --expire=now &&
git -C second-worktree show :blob >actual &&
test_cmp second-worktree/blob actual
'
test_expect_success 'prune: handle HEAD in multiple worktrees' '
git worktree add --detach third-worktree &&
echo "new blob for third-worktree" >third-worktree/blob &&
git -C third-worktree add blob &&
git -C third-worktree commit -m "third" &&
rm .git/worktrees/third-worktree/index &&
test_must_fail git -C third-worktree show :blob &&
git prune --expire=now &&
git -C third-worktree show HEAD:blob >actual &&
test_cmp third-worktree/blob actual
'
test_expect_success 'prune: handle HEAD reflog in multiple worktrees' '
git config core.logAllRefUpdates true &&
echo "lost blob for third-worktree" >expected &&
(
cd third-worktree &&
cat ../expected >blob &&
git add blob &&
git commit -m "second commit in third" &&
git clean -f && # Remove untracked left behind by deleting index
git reset --hard HEAD^
) &&
git prune --expire=now &&
oid=`git hash-object expected` &&
git -C third-worktree show "$oid" >actual &&
test_cmp expected actual
'
test_expect_success 'prune: handle expire option correctly' '
test_must_fail git prune --expire 2>error &&
test_i18ngrep "requires a value" error &&
test_must_fail git prune --expire=nyah 2>error &&
test_i18ngrep "malformed expiration" error &&
git prune --no-expire
'
test_expect_success 'trivial prune with bitmaps enabled' '
git repack -adb &&
blob=$(echo bitmap-unreachable-blob | git hash-object -w --stdin) &&
git prune --expire=now &&
git cat-file -e HEAD &&
test_must_fail git cat-file -e $blob
'
test_expect_success 'old reachable-from-recent retained with bitmaps' '
git repack -adb &&
to_drop=$(echo bitmap-from-recent-1 | git hash-object -w --stdin) &&
test-tool chmtime -86400 .git/objects/$(test_oid_to_path $to_drop) &&
to_save=$(echo bitmap-from-recent-2 | git hash-object -w --stdin) &&
test-tool chmtime -86400 .git/objects/$(test_oid_to_path $to_save) &&
tree=$(printf "100644 blob $to_save\tfile\n" | git mktree) &&
test-tool chmtime -86400 .git/objects/$(test_oid_to_path $tree) &&
commit=$(echo foo | git commit-tree $tree) &&
git prune --expire=12.hours.ago &&
git cat-file -e $commit &&
git cat-file -e $tree &&
git cat-file -e $to_save &&
test_must_fail git cat-file -e $to_drop
'
test_expect_success 'gc.recentObjectsHook' '
add_blob &&
test-tool chmtime =-86500 $BLOB_FILE &&
write_script precious-objects <<-EOF &&
echo $BLOB
EOF
test_config gc.recentObjectsHook ./precious-objects &&
git prune --expire=now &&
git cat-file -p $BLOB
'
test_done
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