#!/bin/sh
test_description='git repack works correctly'
TEST_PASSES_SANITIZE_LEAK=true
. ./test-lib.sh
objdir=.git/objects
packdir=$objdir/pack
test_expect_success '--expire-to stores pruned objects (now)' '
git init expire-to-now &&
(
cd expire-to-now &&
git branch -M main &&
test_commit base &&
git checkout -b cruft &&
test_commit --no-tag cruft &&
git rev-list --objects --no-object-names main..cruft >moved.raw &&
sort moved.raw >moved.want &&
git rev-list --all --objects --no-object-names >expect.raw &&
sort expect.raw >expect &&
git checkout main &&
git branch -D cruft &&
git reflog expire --all --expire=all &&
git init --bare expired.git &&
git repack -d \
--cruft --cruft-expiration="now" \
--expire-to="expired.git/objects/pack/pack" &&
expired="$(ls expired.git/objects/pack/pack-*.idx)" &&
test_path_is_file "${expired%.idx}.mtimes" &&
# Since the `--cruft-expiration` is "now", the effective
# behavior is to move _all_ unreachable objects out to
# the location in `--expire-to`.
git show-index <$expired >expired.raw &&
cut -d" " -f2 expired.raw | sort >expired.objects &&
git rev-list --all --objects --no-object-names \
>remaining.objects &&
# ...in other words, the combined contents of this
# repository and expired.git should be the same as the
# set of objects we started with.
sort expired.objects remaining.objects >actual &&
test_cmp expect actual &&
# The "moved" objects (i.e., those in expired.git)
# should be the same as the cruft objects which were
# expired in the previous step.
test_cmp moved.want expired.objects
)
'
test_expect_success '--expire-to stores pruned objects (5.minutes.ago)' '
git init expire-to-5.minutes.ago &&
(
cd expire-to-5.minutes.ago &&
git branch -M main &&
test_commit base &&
# Create two classes of unreachable objects, one which
# is older than 5 minutes (stale), and another which is
# newer (recent).
for kind in stale recent
do
git checkout -b $kind main &&
test_commit --no-tag $kind || return 1
done &&
git rev-list --objects --no-object-names main..stale >in &&
stale="$(git pack-objects $objdir/pack/pack <in)" &&
mtime="$(test-tool chmtime --get =-600 $objdir/pack/pack-$stale.pack)" &&
# expect holds the set of objects we expect to find in
# this repository after repacking
git rev-list --objects --no-object-names recent >expect.raw &&
sort expect.raw >expect &&
# moved.want holds the set of objects we expect to find
# in expired.git
git rev-list --objects --no-object-names main..stale >out &&
sort out >moved.want &&
git checkout main &&
git branch -D stale recent &&
git reflog expire --all --expire=all &&
git prune-packed &&
git init --bare expired.git &&
git repack -d \
--cruft --cruft-expiration=5.minutes.ago \
--expire-to="expired.git/objects/pack/pack" &&
# Some of the remaining objects in this repository are
# unreachable, so use `cat-file --batch-all-objects`
# instead of `rev-list` to get their names
git cat-file --batch-all-objects --batch-check="%(objectname)" \
>remaining.objects &&
sort remaining.objects >actual &&
test_cmp expect actual &&
(
cd expired.git &&
expired="$(ls objects/pack/pack-*.mtimes)" &&
test-tool pack-mtimes $(basename $expired) >out &&
cut -d" " -f1 out | sort >../moved.got &&
# Ensure that there are as many objects with the
# expected mtime as were moved to expired.git.
#
# In other words, ensure that the recorded
# mtimes of any moved objects was written
# correctly.
grep " $mtime$" out >matching &&
test_line_count = $(wc -l <../moved.want) matching
) &&
test_cmp moved.want moved.got
)
'
generate_random_blob() {
test-tool genrandom "$@" >blob &&
git hash-object -w -t blob blob &&
rm blob
}
pack_random_blob () {
generate_random_blob "$@" &&
git repack -d -q >/dev/null
}
generate_cruft_pack () {
pack_random_blob "$@" >/dev/null &&
ls $packdir/pack-*.pack | xargs -n 1 basename >in &&
pack="$(git pack-objects --cruft $packdir/pack <in)" &&
git prune-packed &&
echo "$packdir/pack-$pack.mtimes"
}
test_expect_success '--max-cruft-size creates new packs when above threshold' '
git init max-cruft-size-large &&
(
cd max-cruft-size-large &&
test_commit base &&
foo="$(pack_random_blob foo $((1*1024*1024)))" &&
git repack --cruft -d &&
cruft_foo="$(ls $packdir/pack-*.mtimes)" &&
bar="$(pack_random_blob bar $((1*1024*1024)))" &&
git repack --cruft -d --max-cruft-size=1M &&
cruft_bar="$(ls $packdir/pack-*.mtimes | grep -v $cruft_foo)" &&
test-tool pack-mtimes $(basename "$cruft_foo") >foo.objects &&
test-tool pack-mtimes $(basename "$cruft_bar") >bar.objects &&
grep "^$foo" foo.objects &&
test_line_count = 1 foo.objects &&
grep "^$bar" bar.objects &&
test_line_count = 1 bar.objects
)
'
test_expect_success '--max-cruft-size combines existing packs when below threshold' '
git init max-cruft-size-small &&
(
cd max-cruft-size-small &&
test_commit base &&
foo="$(pack_random_blob foo $((1*1024*1024)))" &&
git repack --cruft -d &&
bar="$(pack_random_blob bar $((1*1024*1024)))" &&
git repack --cruft -d --max-cruft-size=10M &&
cruft=$(ls $packdir/pack-*.mtimes) &&
test-tool pack-mtimes $(basename "$cruft") >cruft.objects &&
grep "^$foo" cruft.objects &&
grep "^$bar" cruft.objects &&
test_line_count = 2 cruft.objects
)
'
test_expect_success '--max-cruft-size combines smaller packs first' '
git init max-cruft-size-consume-small &&
(
cd max-cruft-size-consume-small &&
test_commit base &&
git repack -ad &&
cruft_foo="$(generate_cruft_pack foo 524288)" && # 0.5 MiB
cruft_bar="$(generate_cruft_pack bar 524288)" && # 0.5 MiB
cruft_baz="$(generate_cruft_pack baz 1048576)" && # 1.0 MiB
cruft_quux="$(generate_cruft_pack quux 1572864)" && # 1.5 MiB
test-tool pack-mtimes "$(basename $cruft_foo)" >expect.raw &&
test-tool pack-mtimes "$(basename $cruft_bar)" >>expect.raw &&
sort expect.raw >expect.objects &&
# repacking with `--max-cruft-size=2M` should combine
# both 0.5 MiB packs together, instead of, say, one of
# the 0.5 MiB packs with the 1.0 MiB pack
ls $packdir/pack-*.mtimes | sort >cruft.before &&
git repack -d --cruft --max-cruft-size=2M &&
ls $packdir/pack-*.mtimes | sort >cruft.after &&
comm -13 cruft.before cruft.after >cruft.new &&
comm -23 cruft.before cruft.after >cruft.removed &&
test_line_count = 1 cruft.new &&
test_line_count = 2 cruft.removed &&
# the two smaller packs should be rolled up first
printf "%s\n" $cruft_foo $cruft_bar | sort >expect.removed &&
test_cmp expect.removed cruft.removed &&
# ...and contain the set of objects rolled up
test-tool pack-mtimes "$(basename $(cat cruft.new))" >actual.raw &&
sort actual.raw >actual.objects &&
test_cmp expect.objects actual.objects
)
'
test_expect_success 'setup --max-cruft-size with freshened objects' '
git init max-cruft-size-freshen &&
(
cd max-cruft-size-freshen &&
test_commit base &&
git repack -ad &&
foo="$(generate_random_blob foo 64)" &&
test-tool chmtime --get -10000 \
"$objdir/$(test_oid_to_path "$foo")" >foo.mtime &&
git repack --cruft -d &&
cruft="$(ls $packdir/pack-*.mtimes)" &&
test-tool pack-mtimes "$(basename $cruft)" >actual &&
echo "$foo $(cat foo.mtime)" >expect &&
test_cmp expect actual
)
'
test_expect_success '--max-cruft-size with freshened objects (loose)' '
(
cd max-cruft-size-freshen &&
# regenerate the object, setting its mtime to be more recent
foo="$(generate_random_blob foo 64)" &&
test-tool chmtime --get -100 \
"$objdir/$(test_oid_to_path "$foo")" >foo.mtime &&
git repack --cruft -d &&
cruft="$(ls $packdir/pack-*.mtimes)" &&
test-tool pack-mtimes "$(basename $cruft)" >actual &&
echo "$foo $(cat foo.mtime)" >expect &&
test_cmp expect actual
)
'
test_expect_success '--max-cruft-size with freshened objects (packed)' '
(
cd max-cruft-size-freshen &&
# regenerate the object and store it in a packfile,
# setting its mtime to be more recent
#
# store it alongside another cruft object so that we
# do not create an identical copy of the existing
# cruft pack (which contains $foo).
foo="$(generate_random_blob foo 64)" &&
bar="$(generate_random_blob bar 64)" &&
foo_pack="$(printf "%s\n" $foo $bar | git pack-objects $packdir/pack)" &&
git prune-packed &&
test-tool chmtime --get -10 \
"$packdir/pack-$foo_pack.pack" >foo.mtime &&
git repack --cruft -d &&
cruft="$(ls $packdir/pack-*.mtimes)" &&
test-tool pack-mtimes "$(basename $cruft)" >actual &&
echo "$foo $(cat foo.mtime)" >expect.raw &&
echo "$bar $(cat foo.mtime)" >>expect.raw &&
sort expect.raw >expect &&
test_cmp expect actual
)
'
test_expect_success '--max-cruft-size with pruning' '
git init max-cruft-size-prune &&
(
cd max-cruft-size-prune &&
test_commit base &&
foo="$(generate_random_blob foo $((1024*1024)))" &&
bar="$(generate_random_blob bar $((1024*1024)))" &&
baz="$(generate_random_blob baz $((1024*1024)))" &&
test-tool chmtime -10000 "$objdir/$(test_oid_to_path "$foo")" &&
git repack -d --cruft --max-cruft-size=1M &&
# backdate the mtimes of all cruft packs to validate
# that they were rewritten as a result of pruning
ls $packdir/pack-*.mtimes | sort >cruft.before &&
for cruft in $(cat cruft.before)
do
mtime="$(test-tool chmtime --get -10000 "$cruft")" &&
echo $cruft $mtime >>mtimes || return 1
done &&
# repack (and prune) with a --max-cruft-size to ensure
# that we appropriately split the resulting set of packs
git repack -d --cruft --max-cruft-size=1M \
--cruft-expiration=1000.seconds.ago &&
ls $packdir/pack-*.mtimes | sort >cruft.after &&
for cruft in $(cat cruft.after)
do
old_mtime="$(grep $cruft mtimes | cut -d" " -f2)" &&
new_mtime="$(test-tool chmtime --get $cruft)" &&
test $old_mtime -lt $new_mtime || return 1
done &&
test_line_count = 3 cruft.before &&
test_line_count = 2 cruft.after &&
test_must_fail git cat-file -e $foo &&
git cat-file -e $bar &&
git cat-file -e $baz
)
'
test_expect_success '--max-cruft-size ignores non-local packs' '
repo="max-cruft-size-non-local" &&
git init $repo &&
(
cd $repo &&
test_commit base &&
generate_random_blob foo 64 &&
git repack --cruft -d
) &&
git clone --reference=$repo $repo $repo-alt &&
(
cd $repo-alt &&
test_commit other &&
generate_random_blob bar 64 &&
# ensure that we do not attempt to pick up packs from
# the non-alternated repository, which would result in a
# crash
git repack --cruft --max-cruft-size=1M -d
)
'
test_expect_success 'reachable packs are preferred over cruft ones' '
repo="cruft-preferred-packs" &&
git init "$repo" &&
(
cd "$repo" &&
# This test needs to exercise careful control over when a MIDX
# is and is not written. Unset the corresponding TEST variable
# accordingly.
sane_unset GIT_TEST_MULTI_PACK_INDEX &&
test_commit base &&
test_commit --no-tag cruft &&
non_cruft="$(echo base | git pack-objects --revs $packdir/pack)" &&
# Write a cruft pack which both (a) sorts ahead of the non-cruft
# pack in lexical order, and (b) has an older mtime to appease
# the MIDX preferred pack selection routine.
cruft="$(echo pack-$non_cruft.pack | git pack-objects --cruft $packdir/pack-A)" &&
test-tool chmtime -1000 $packdir/pack-A-$cruft.pack &&
test_commit other &&
git repack -d &&
git repack --geometric 2 -d --write-midx --write-bitmap-index &&
# After repacking, there are two packs left: one reachable one
# (which is the result of combining both of the existing two
# non-cruft packs), and one cruft pack.
find .git/objects/pack -type f -name "*.pack" >packs &&
test_line_count = 2 packs &&
# Make sure that the pack we just wrote is marked as preferred,
# not the cruft one.
pack="$(test-tool read-midx --preferred-pack $objdir)" &&
test_path_is_missing "$packdir/$(basename "$pack" ".idx").mtimes"
)
'
test_done
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