#!/bin/sh
test_description='basic git gc tests
'
TEST_PASSES_SANITIZE_LEAK=true
. ./test-lib.sh
. "$TEST_DIRECTORY"/lib-terminal.sh
test_expect_success 'setup' '
# do not let the amount of physical memory affects gc
# behavior, make sure we always pack everything to one pack by
# default
git config gc.bigPackThreshold 2g &&
test_oid_init
'
test_expect_success 'gc empty repository' '
git gc
'
test_expect_success 'gc does not leave behind pid file' '
git gc &&
test_path_is_missing .git/gc.pid
'
test_expect_success 'gc --gobbledegook' '
test_expect_code 129 git gc --nonsense 2>err &&
test_grep "[Uu]sage: git gc" err
'
test_expect_success 'gc -h with invalid configuration' '
mkdir broken &&
(
cd broken &&
git init &&
echo "[gc] pruneexpire = CORRUPT" >>.git/config &&
test_expect_code 129 git gc -h >usage 2>&1
) &&
test_grep "[Uu]sage" broken/usage
'
test_expect_success 'gc is not aborted due to a stale symref' '
git init remote &&
(
cd remote &&
test_commit initial &&
git clone . ../client &&
git branch -m develop &&
cd ../client &&
git fetch --prune &&
git gc
)
'
test_expect_success 'gc --keep-largest-pack' '
test_create_repo keep-pack &&
(
cd keep-pack &&
test_commit one &&
test_commit two &&
test_commit three &&
git gc &&
( cd .git/objects/pack && ls *.pack ) >pack-list &&
test_line_count = 1 pack-list &&
cp pack-list base-pack-list &&
test_commit four &&
git repack -d &&
test_commit five &&
git repack -d &&
( cd .git/objects/pack && ls *.pack ) >pack-list &&
test_line_count = 3 pack-list &&
git gc --keep-largest-pack &&
( cd .git/objects/pack && ls *.pack ) >pack-list &&
test_line_count = 2 pack-list &&
awk "/^P /{print \$2}" <.git/objects/info/packs >pack-info &&
test_line_count = 2 pack-info &&
test_path_is_file .git/objects/pack/$(cat base-pack-list) &&
git fsck
)
'
test_expect_success 'pre-auto-gc hook can stop auto gc' '
cat >err.expect <<-\EOF &&
no gc for you
EOF
git init pre-auto-gc-hook &&
test_hook -C pre-auto-gc-hook pre-auto-gc <<-\EOF &&
echo >&2 no gc for you &&
exit 1
EOF
(
cd pre-auto-gc-hook &&
git config gc.auto 3 &&
git config gc.autoDetach false &&
# We need to create two object whose sha1s start with 17
# since this is what git gc counts. As it happens, these
# two blobs will do so.
test_commit "$(test_oid blob17_1)" &&
test_commit "$(test_oid blob17_2)" &&
git gc --auto >../out.actual 2>../err.actual
) &&
test_must_be_empty out.actual &&
test_cmp err.expect err.actual &&
cat >err.expect <<-\EOF &&
will gc for you
Auto packing the repository for optimum performance.
See "git help gc" for manual housekeeping.
EOF
test_hook -C pre-auto-gc-hook --clobber pre-auto-gc <<-\EOF &&
echo >&2 will gc for you &&
exit 0
EOF
git -C pre-auto-gc-hook gc --auto >out.actual 2>err.actual &&
test_must_be_empty out.actual &&
test_cmp err.expect err.actual
'
test_expect_success 'auto gc with too many loose objects does not attempt to create bitmaps' '
test_config gc.auto 3 &&
test_config gc.autodetach false &&
test_config pack.writebitmaps true &&
# We need to create two object whose sha1s start with 17
# since this is what git gc counts. As it happens, these
# two blobs will do so.
test_commit "$(test_oid blob17_1)" &&
test_commit "$(test_oid blob17_2)" &&
# Our first gc will create a pack; our second will create a second pack
git gc --auto &&
ls .git/objects/pack/pack-*.pack | sort >existing_packs &&
test_commit "$(test_oid blob17_3)" &&
test_commit "$(test_oid blob17_4)" &&
git gc --auto 2>err &&
test_grep ! "^warning:" err &&
ls .git/objects/pack/pack-*.pack | sort >post_packs &&
comm -1 -3 existing_packs post_packs >new &&
comm -2 -3 existing_packs post_packs >del &&
test_line_count = 0 del && # No packs are deleted
test_line_count = 1 new # There is one new pack
'
test_expect_success 'gc --no-quiet' '
GIT_PROGRESS_DELAY=0 git -c gc.writeCommitGraph=true gc --no-quiet >stdout 2>stderr &&
test_must_be_empty stdout &&
test_grep "Computing commit graph generation numbers" stderr
'
test_expect_success TTY 'with TTY: gc --no-quiet' '
test_terminal env GIT_PROGRESS_DELAY=0 \
git -c gc.writeCommitGraph=true gc --no-quiet >stdout 2>stderr &&
test_must_be_empty stdout &&
test_grep "Enumerating objects" stderr &&
test_grep "Computing commit graph generation numbers: 100% (4/4), done." stderr
'
test_expect_success 'gc --quiet' '
git -c gc.writeCommitGraph=true gc --quiet >stdout 2>stderr &&
test_must_be_empty stdout &&
test_must_be_empty stderr
'
test_expect_success 'gc.reflogExpire{Unreachable,}=never skips "expire" via "gc"' '
test_config gc.reflogExpire never &&
test_config gc.reflogExpireUnreachable never &&
GIT_TRACE=$(pwd)/trace.out git gc &&
# Check that git-pack-refs is run as a sanity check (done via
# gc_before_repack()) but that git-expire is not.
grep -E "^trace: (built-in|exec|run_command): git pack-refs --" trace.out &&
! grep -E "^trace: (built-in|exec|run_command): git reflog expire --" trace.out
'
test_expect_success 'one of gc.reflogExpire{Unreachable,}=never does not skip "expire" via "gc"' '
>trace.out &&
test_config gc.reflogExpire never &&
GIT_TRACE=$(pwd)/trace.out git gc &&
grep -E "^trace: (built-in|exec|run_command): git reflog expire --" trace.out
'
test_expect_success 'gc.repackFilter launches repack with a filter' '
git clone --no-local --bare . bare.git &&
git -C bare.git -c gc.cruftPacks=false gc &&
test_stdout_line_count = 1 ls bare.git/objects/pack/*.pack &&
GIT_TRACE=$(pwd)/trace.out git -C bare.git -c gc.repackFilter=blob:none \
-c repack.writeBitmaps=false -c gc.cruftPacks=false gc &&
test_stdout_line_count = 2 ls bare.git/objects/pack/*.pack &&
grep -E "^trace: (built-in|exec|run_command): git repack .* --filter=blob:none ?.*" trace.out
'
test_expect_success 'gc.repackFilterTo store filtered out objects' '
test_when_finished "rm -rf bare.git filtered.git" &&
git init --bare filtered.git &&
git -C bare.git -c gc.repackFilter=blob:none \
-c gc.repackFilterTo=../filtered.git/objects/pack/pack \
-c repack.writeBitmaps=false -c gc.cruftPacks=false gc &&
test_stdout_line_count = 1 ls bare.git/objects/pack/*.pack &&
test_stdout_line_count = 1 ls filtered.git/objects/pack/*.pack
'
prepare_cruft_history () {
test_commit base &&
test_commit --no-tag foo &&
test_commit --no-tag bar &&
git reset HEAD^^
}
assert_no_cruft_packs () {
find .git/objects/pack -name "*.mtimes" >mtimes &&
test_must_be_empty mtimes
}
for argv in \
"gc" \
"-c gc.cruftPacks=true gc" \
"-c gc.cruftPacks=false gc --cruft"
do
test_expect_success "git $argv generates a cruft pack" '
test_when_finished "rm -fr repo" &&
git init repo &&
(
cd repo &&
prepare_cruft_history &&
git $argv &&
find .git/objects/pack -name "*.mtimes" >mtimes &&
sed -e 's/\.mtimes$/\.pack/g' mtimes >packs &&
test_file_not_empty packs &&
while read pack
do
test_path_is_file "$pack" || return 1
done <packs
)
'
done
for argv in \
"gc --no-cruft" \
"-c gc.cruftPacks=false gc" \
"-c gc.cruftPacks=true gc --no-cruft"
do
test_expect_success "git $argv does not generate a cruft pack" '
test_when_finished "rm -fr repo" &&
git init repo &&
(
cd repo &&
prepare_cruft_history &&
git $argv &&
assert_no_cruft_packs
)
'
done
test_expect_success '--keep-largest-pack ignores cruft packs' '
test_when_finished "rm -fr repo" &&
git init repo &&
(
cd repo &&
# Generate a pack for reachable objects (of which there
# are 3), and one for unreachable objects (of which
# there are 6).
prepare_cruft_history &&
git gc --cruft &&
mtimes="$(find .git/objects/pack -type f -name "pack-*.mtimes")" &&
sz="$(test_file_size "${mtimes%.mtimes}.pack")" &&
# Ensure that the cruft pack gets removed (due to
# `--prune=now`) despite it being the largest pack.
git -c gc.bigPackThreshold=$sz gc --cruft --prune=now &&
assert_no_cruft_packs
)
'
test_expect_success 'gc.bigPackThreshold ignores cruft packs' '
test_when_finished "rm -fr repo" &&
git init repo &&
(
cd repo &&
# Generate a pack for reachable objects (of which there
# are 3), and one for unreachable objects (of which
# there are 6).
prepare_cruft_history &&
git gc --cruft &&
# Ensure that the cruft pack gets removed (due to
# `--prune=now`) despite it being the largest pack.
git gc --cruft --prune=now --keep-largest-pack &&
assert_no_cruft_packs
)
'
cruft_max_size_opts="git repack -d -l --cruft --cruft-expiration=2.weeks.ago"
test_expect_success 'setup for --max-cruft-size tests' '
git init cruft--max-size &&
(
cd cruft--max-size &&
prepare_cruft_history
)
'
test_expect_success '--max-cruft-size sets appropriate repack options' '
GIT_TRACE2_EVENT=$(pwd)/trace2.txt git -C cruft--max-size \
gc --cruft --max-cruft-size=1M &&
test_subcommand $cruft_max_size_opts --max-cruft-size=1048576 <trace2.txt
'
test_expect_success 'gc.maxCruftSize sets appropriate repack options' '
GIT_TRACE2_EVENT=$(pwd)/trace2.txt \
git -C cruft--max-size -c gc.maxCruftSize=2M gc --cruft &&
test_subcommand $cruft_max_size_opts --max-cruft-size=2097152 <trace2.txt &&
GIT_TRACE2_EVENT=$(pwd)/trace2.txt \
git -C cruft--max-size -c gc.maxCruftSize=2M gc --cruft \
--max-cruft-size=3M &&
test_subcommand $cruft_max_size_opts --max-cruft-size=3145728 <trace2.txt
'
run_and_wait_for_gc () {
# We read stdout from gc for the side effect of waiting until the
# background gc process exits, closing its fd 9. Furthermore, the
# variable assignment from a command substitution preserves the
# exit status of the main gc process.
# Note: this fd trickery doesn't work on Windows, but there is no
# need to, because on Win the auto gc always runs in the foreground.
doesnt_matter=$(git gc "$@" 9>&1)
}
test_expect_success 'background auto gc does not run if gc.log is present and recent but does if it is old' '
test_commit foo &&
test_commit bar &&
git repack &&
test_config gc.autopacklimit 1 &&
test_config gc.autodetach true &&
echo fleem >.git/gc.log &&
git gc --auto 2>err &&
test_grep "^warning:" err &&
test_config gc.logexpiry 5.days &&
test-tool chmtime =-345600 .git/gc.log &&
git gc --auto &&
test_config gc.logexpiry 2.days &&
run_and_wait_for_gc --auto &&
ls .git/objects/pack/pack-*.pack >packs &&
test_line_count = 1 packs
'
test_expect_success 'background auto gc respects lock for all operations' '
# make sure we run a background auto-gc
test_commit make-pack &&
git repack &&
test_config gc.autopacklimit 1 &&
test_config gc.autodetach true &&
# create a ref whose loose presence we can use to detect a pack-refs run
git update-ref refs/heads/should-be-loose HEAD &&
(ls -1 .git/refs/heads .git/reftable >expect || true) &&
# now fake a concurrent gc that holds the lock; we can use our
# shell pid so that it looks valid.
hostname=$(hostname || echo unknown) &&
shell_pid=$$ &&
if test_have_prereq MINGW && test -f /proc/$shell_pid/winpid
then
# In Git for Windows, Bash (actually, the MSYS2 runtime) has a
# different idea of PIDs than git.exe (actually Windows). Use
# the Windows PID in this case.
shell_pid=$(cat /proc/$shell_pid/winpid)
fi &&
printf "%d %s" "$shell_pid" "$hostname" >.git/gc.pid &&
# our gc should exit zero without doing anything
run_and_wait_for_gc --auto &&
(ls -1 .git/refs/heads .git/reftable >actual || true) &&
test_cmp expect actual
'
test_expect_success '--detach overrides gc.autoDetach=false' '
test_when_finished "rm -rf repo" &&
git init repo &&
(
cd repo &&
# Prepare the repository such that git-gc(1) ends up repacking.
test_commit "$(test_oid blob17_1)" &&
test_commit "$(test_oid blob17_2)" &&
git config gc.autodetach false &&
git config gc.auto 2 &&
# Note that we cannot use `test_cmp` here to compare stderr
# because it may contain output from `set -x`.
run_and_wait_for_gc --auto --detach 2>actual &&
test_grep "Auto packing the repository in background for optimum performance." actual
)
'
test_expect_success '--no-detach overrides gc.autoDetach=true' '
test_when_finished "rm -rf repo" &&
git init repo &&
(
cd repo &&
# Prepare the repository such that git-gc(1) ends up repacking.
test_commit "$(test_oid blob17_1)" &&
test_commit "$(test_oid blob17_2)" &&
git config gc.autodetach true &&
git config gc.auto 2 &&
GIT_PROGRESS_DELAY=0 git gc --auto --no-detach 2>output &&
test_grep "Auto packing the repository for optimum performance." output &&
test_grep "Collecting referenced commits: 2, done." output
)
'
# DO NOT leave a detached auto gc process running near the end of the
# test script: it can run long enough in the background to racily
# interfere with the cleanup in 'test_done'.
test_done
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