[thirdparty/git.git] / t / t6500-gc.sh

#!/bin/sh

test_description='basic git gc tests
'

. ./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" 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_auto_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 --auto 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_auto_gc &&
	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_auto_gc &&
	(ls -1 .git/refs/heads .git/reftable >actual || true) &&
	test_cmp expect actual
'

# 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
Commit	Line	Data
0c8151b6 NTND	1	#!/bin/sh
	2
	3	test_description='basic git gc tests
	4	'
	5
	6	. ./test-lib.sh
6b89a34c	7	. "$TEST_DIRECTORY"/lib-terminal.sh
0c8151b6	8
9806f5a7 NTND	9	test_expect_success 'setup' '
	10	# do not let the amount of physical memory affects gc
	11	# behavior, make sure we always pack everything to one pack by
	12	# default
368f3cb0	13	git config gc.bigPackThreshold 2g &&
77257e3c	14	test_oid_init
9806f5a7 NTND	15	'
9806f5a7 NTND	16
0c8151b6 NTND	17	test_expect_success 'gc empty repository' '
	18	git gc
	19	'
	20
4c5baf02 JN	21	test_expect_success 'gc does not leave behind pid file' '
	22	git gc &&
	23	test_path_is_missing .git/gc.pid
	24	'
	25
0c8151b6 NTND	26	test_expect_success 'gc --gobbledegook' '
0c8151b6 NTND	27	test_expect_code 129 git gc --nonsense 2>err &&
6789275d	28	test_grep "[Uu]sage: git gc" err
0c8151b6 NTND	29	'
	30
	31	test_expect_success 'gc -h with invalid configuration' '
	32	mkdir broken &&
	33	(
	34	cd broken &&
	35	git init &&
	36	echo "[gc] pruneexpire = CORRUPT" >>.git/config &&
	37	test_expect_code 129 git gc -h >usage 2>&1
	38	) &&
6789275d	39	test_grep "[Uu]sage" broken/usage
0c8151b6 NTND	40	'
0c8151b6 NTND	41
14886b40	42	test_expect_success 'gc is not aborted due to a stale symref' '
8c845cde JS	43	git init remote &&
	44	(
	45	cd remote &&
	46	test_commit initial &&
	47	git clone . ../client &&
	48	git branch -m develop &&
	49	cd ../client &&
	50	git fetch --prune &&
	51	git gc
	52	)
	53	'
	54
ae4e89e5 NTND	55	test_expect_success 'gc --keep-largest-pack' '
	56	test_create_repo keep-pack &&
	57	(
	58	cd keep-pack &&
	59	test_commit one &&
	60	test_commit two &&
	61	test_commit three &&
	62	git gc &&
	63	( cd .git/objects/pack && ls *.pack ) >pack-list &&
	64	test_line_count = 1 pack-list &&
45a26864	65	cp pack-list base-pack-list &&
ae4e89e5 NTND	66	test_commit four &&
	67	git repack -d &&
	68	test_commit five &&
	69	git repack -d &&
	70	( cd .git/objects/pack && ls *.pack ) >pack-list &&
	71	test_line_count = 3 pack-list &&
	72	git gc --keep-largest-pack &&
	73	( cd .git/objects/pack && ls *.pack ) >pack-list &&
	74	test_line_count = 2 pack-list &&
e941c48d EW	75	awk "/^P /{print \$2}" <.git/objects/info/packs >pack-info &&
e941c48d EW	76	test_line_count = 2 pack-info &&
45a26864	77	test_path_is_file .git/objects/pack/$(cat base-pack-list) &&
ae4e89e5 NTND	78	git fsck
	79	)
	80	'
	81
9eb542f2 ÆAB	82	test_expect_success 'pre-auto-gc hook can stop auto gc' '
	83	cat >err.expect <<-\EOF &&
	84	no gc for you
	85	EOF
	86
	87	git init pre-auto-gc-hook &&
d7ef0368 ÆAB	88	test_hook -C pre-auto-gc-hook pre-auto-gc <<-\EOF &&
	89	echo >&2 no gc for you &&
	90	exit 1
	91	EOF
9eb542f2 ÆAB	92	(
9eb542f2 ÆAB	93	cd pre-auto-gc-hook &&
9eb542f2 ÆAB	94
	95	git config gc.auto 3 &&
	96	git config gc.autoDetach false &&
	97
	98	# We need to create two object whose sha1s start with 17
	99	# since this is what git gc counts. As it happens, these
	100	# two blobs will do so.
77257e3c PS	101	test_commit "$(test_oid blob17_1)" &&
77257e3c PS	102	test_commit "$(test_oid blob17_2)" &&
9eb542f2 ÆAB	103
	104	git gc --auto >../out.actual 2>../err.actual
	105	) &&
	106	test_must_be_empty out.actual &&
	107	test_cmp err.expect err.actual &&
	108
	109	cat >err.expect <<-\EOF &&
	110	will gc for you
	111	Auto packing the repository for optimum performance.
	112	See "git help gc" for manual housekeeping.
	113	EOF
	114
d7ef0368 ÆAB	115	test_hook -C pre-auto-gc-hook --clobber pre-auto-gc <<-\EOF &&
	116	echo >&2 will gc for you &&
	117	exit 0
	118	EOF
	119
	120	git -C pre-auto-gc-hook gc --auto >out.actual 2>err.actual &&
9eb542f2 ÆAB	121
	122	test_must_be_empty out.actual &&
	123	test_cmp err.expect err.actual
	124	'
	125
bdf56de8 DT	126	test_expect_success 'auto gc with too many loose objects does not attempt to create bitmaps' '
	127	test_config gc.auto 3 &&
	128	test_config gc.autodetach false &&
	129	test_config pack.writebitmaps true &&
	130	# We need to create two object whose sha1s start with 17
	131	# since this is what git gc counts. As it happens, these
	132	# two blobs will do so.
77257e3c PS	133	test_commit "$(test_oid blob17_1)" &&
77257e3c PS	134	test_commit "$(test_oid blob17_2)" &&
bdf56de8 DT	135	# Our first gc will create a pack; our second will create a second pack
bdf56de8 DT	136	git gc --auto &&
35a8a354	137	ls .git/objects/pack/pack-*.pack \| sort >existing_packs &&
77257e3c PS	138	test_commit "$(test_oid blob17_3)" &&
77257e3c PS	139	test_commit "$(test_oid blob17_4)" &&
bdf56de8 DT	140
bdf56de8 DT	141	git gc --auto 2>err &&
6789275d	142	test_grep ! "^warning:" err &&
35a8a354	143	ls .git/objects/pack/pack-*.pack \| sort >post_packs &&
bdf56de8 DT	144	comm -1 -3 existing_packs post_packs >new &&
	145	comm -2 -3 existing_packs post_packs >del &&
	146	test_line_count = 0 del && # No packs are deleted
35a8a354	147	test_line_count = 1 new # There is one new pack
bdf56de8 DT	148	'
bdf56de8 DT	149
6b89a34c	150	test_expect_success 'gc --no-quiet' '
44a4693b	151	GIT_PROGRESS_DELAY=0 git -c gc.writeCommitGraph=true gc --no-quiet >stdout 2>stderr &&
6b89a34c	152	test_must_be_empty stdout &&
6789275d	153	test_grep "Computing commit graph generation numbers" stderr
6b89a34c ÆAB	154	'
	155
	156	test_expect_success TTY 'with TTY: gc --no-quiet' '
ecc08690 DS	157	test_terminal env GIT_PROGRESS_DELAY=0 \
ecc08690 DS	158	git -c gc.writeCommitGraph=true gc --no-quiet >stdout 2>stderr &&
6b89a34c	159	test_must_be_empty stdout &&
6789275d JH	160	test_grep "Enumerating objects" stderr &&
6789275d JH	161	test_grep "Computing commit graph generation numbers" stderr
6b89a34c ÆAB	162	'
	163
	164	test_expect_success 'gc --quiet' '
	165	git -c gc.writeCommitGraph=true gc --quiet >stdout 2>stderr &&
	166	test_must_be_empty stdout &&
	167	test_must_be_empty stderr
	168	'
	169
bf3d70fe ÆAB	170	test_expect_success 'gc.reflogExpire{Unreachable,}=never skips "expire" via "gc"' '
	171	test_config gc.reflogExpire never &&
	172	test_config gc.reflogExpireUnreachable never &&
	173
	174	GIT_TRACE=$(pwd)/trace.out git gc &&
	175
	176	# Check that git-pack-refs is run as a sanity check (done via
	177	# gc_before_repack()) but that git-expire is not.
	178	grep -E "^trace: (built-in\|exec\|run_command): git pack-refs --" trace.out &&
	179	! grep -E "^trace: (built-in\|exec\|run_command): git reflog expire --" trace.out
	180	'
	181
	182	test_expect_success 'one of gc.reflogExpire{Unreachable,}=never does not skip "expire" via "gc"' '
	183	>trace.out &&
	184	test_config gc.reflogExpire never &&
	185	GIT_TRACE=$(pwd)/trace.out git gc &&
	186	grep -E "^trace: (built-in\|exec\|run_command): git reflog expire --" trace.out
	187	'
	188
1cd43a9e	189	test_expect_success 'gc.repackFilter launches repack with a filter' '
1cd43a9e CC	190	git clone --no-local --bare . bare.git &&
	191
	192	git -C bare.git -c gc.cruftPacks=false gc &&
	193	test_stdout_line_count = 1 ls bare.git/objects/pack/*.pack &&
	194
	195	GIT_TRACE=$(pwd)/trace.out git -C bare.git -c gc.repackFilter=blob:none \
	196	-c repack.writeBitmaps=false -c gc.cruftPacks=false gc &&
	197	test_stdout_line_count = 2 ls bare.git/objects/pack/*.pack &&
	198	grep -E "^trace: (built-in\|exec\|run_command): git repack .* --filter=blob:none ?.*" trace.out
	199	'
	200
9b96046b CC	201	test_expect_success 'gc.repackFilterTo store filtered out objects' '
	202	test_when_finished "rm -rf bare.git filtered.git" &&
	203
	204	git init --bare filtered.git &&
	205	git -C bare.git -c gc.repackFilter=blob:none \
	206	-c gc.repackFilterTo=../filtered.git/objects/pack/pack \
	207	-c repack.writeBitmaps=false -c gc.cruftPacks=false gc &&
	208
	209	test_stdout_line_count = 1 ls bare.git/objects/pack/*.pack &&
	210	test_stdout_line_count = 1 ls filtered.git/objects/pack/*.pack
	211	'
	212
12253ab6 ES	213	prepare_cruft_history () {
	214	test_commit base &&
	215
	216	test_commit --no-tag foo &&
	217	test_commit --no-tag bar &&
	218	git reset HEAD^^
	219	}
	220
c6955928 ES	221	assert_no_cruft_packs () {
	222	find .git/objects/pack -name "*.mtimes" >mtimes &&
	223	test_must_be_empty mtimes
	224	}
	225
50685e0e	226	for argv in \
e3e24de1	227	"gc" \
50685e0e	228	"-c gc.cruftPacks=true gc" \
e3e24de1	229	"-c gc.cruftPacks=false gc --cruft"
50685e0e TB	230	do
	231	test_expect_success "git $argv generates a cruft pack" '
	232	test_when_finished "rm -fr repo" &&
	233	git init repo &&
	234	(
	235	cd repo &&
	236
	237	prepare_cruft_history &&
	238	git $argv &&
	239
	240	find .git/objects/pack -name "*.mtimes" >mtimes &&
	241	sed -e 's/\.mtimes$/\.pack/g' mtimes >packs &&
	242
	243	test_file_not_empty packs &&
	244	while read pack
	245	do
	246	test_path_is_file "$pack" \|\| return 1
	247	done <packs
	248	)
	249	'
	250	done
	251
	252	for argv in \
e3e24de1	253	"gc --no-cruft" \
b9061bc6	254	"-c gc.cruftPacks=false gc" \
e3e24de1	255	"-c gc.cruftPacks=true gc --no-cruft"
50685e0e TB	256	do
	257	test_expect_success "git $argv does not generate a cruft pack" '
	258	test_when_finished "rm -fr repo" &&
	259	git init repo &&
	260	(
	261	cd repo &&
	262
	263	prepare_cruft_history &&
	264	git $argv &&
	265
	266	assert_no_cruft_packs
	267	)
	268	'
	269	done
c6955928	270
05b9013b TB	271	test_expect_success '--keep-largest-pack ignores cruft packs' '
	272	test_when_finished "rm -fr repo" &&
	273	git init repo &&
	274	(
	275	cd repo &&
	276
	277	# Generate a pack for reachable objects (of which there
	278	# are 3), and one for unreachable objects (of which
	279	# there are 6).
	280	prepare_cruft_history &&
	281	git gc --cruft &&
	282
	283	mtimes="$(find .git/objects/pack -type f -name "pack-*.mtimes")" &&
	284	sz="$(test_file_size "${mtimes%.mtimes}.pack")" &&
	285
	286	# Ensure that the cruft pack gets removed (due to
	287	# `--prune=now`) despite it being the largest pack.
	288	git -c gc.bigPackThreshold=$sz gc --cruft --prune=now &&
	289
	290	assert_no_cruft_packs
	291	)
	292	'
	293
	294	test_expect_success 'gc.bigPackThreshold ignores cruft packs' '
	295	test_when_finished "rm -fr repo" &&
	296	git init repo &&
	297	(
	298	cd repo &&
	299
	300	# Generate a pack for reachable objects (of which there
	301	# are 3), and one for unreachable objects (of which
	302	# there are 6).
	303	prepare_cruft_history &&
	304	git gc --cruft &&
	305
	306	# Ensure that the cruft pack gets removed (due to
	307	# `--prune=now`) despite it being the largest pack.
	308	git gc --cruft --prune=now --keep-largest-pack &&
	309
	310	assert_no_cruft_packs
	311	)
	312	'
	313
37dc6d81 TB	314	cruft_max_size_opts="git repack -d -l --cruft --cruft-expiration=2.weeks.ago"
	315
	316	test_expect_success 'setup for --max-cruft-size tests' '
	317	git init cruft--max-size &&
	318	(
	319	cd cruft--max-size &&
	320	prepare_cruft_history
	321	)
	322	'
	323
	324	test_expect_success '--max-cruft-size sets appropriate repack options' '
	325	GIT_TRACE2_EVENT=$(pwd)/trace2.txt git -C cruft--max-size \
	326	gc --cruft --max-cruft-size=1M &&
	327	test_subcommand $cruft_max_size_opts --max-cruft-size=1048576 <trace2.txt
	328	'
	329
	330	test_expect_success 'gc.maxCruftSize sets appropriate repack options' '
	331	GIT_TRACE2_EVENT=$(pwd)/trace2.txt \
	332	git -C cruft--max-size -c gc.maxCruftSize=2M gc --cruft &&
	333	test_subcommand $cruft_max_size_opts --max-cruft-size=2097152 <trace2.txt &&
	334
	335	GIT_TRACE2_EVENT=$(pwd)/trace2.txt \
	336	git -C cruft--max-size -c gc.maxCruftSize=2M gc --cruft \
	337	--max-cruft-size=3M &&
	338	test_subcommand $cruft_max_size_opts --max-cruft-size=3145728 <trace2.txt
	339	'
	340
ef09036c SG	341	run_and_wait_for_auto_gc () {
	342	# We read stdout from gc for the side effect of waiting until the
	343	# background gc process exits, closing its fd 9. Furthermore, the
	344	# variable assignment from a command substitution preserves the
	345	# exit status of the main gc process.
	346	# Note: this fd trickery doesn't work on Windows, but there is no
	347	# need to, because on Win the auto gc always runs in the foreground.
	348	doesnt_matter=$(git gc --auto 9>&1)
	349	}
	350
a831c06a DT	351	test_expect_success 'background auto gc does not run if gc.log is present and recent but does if it is old' '
	352	test_commit foo &&
	353	test_commit bar &&
	354	git repack &&
	355	test_config gc.autopacklimit 1 &&
	356	test_config gc.autodetach true &&
	357	echo fleem >.git/gc.log &&
30299702	358	git gc --auto 2>err &&
6789275d	359	test_grep "^warning:" err &&
a831c06a	360	test_config gc.logexpiry 5.days &&
0e496492	361	test-tool chmtime =-345600 .git/gc.log &&
30299702	362	git gc --auto &&
a831c06a	363	test_config gc.logexpiry 2.days &&
ef09036c SG	364	run_and_wait_for_auto_gc &&
	365	ls .git/objects/pack/pack-*.pack >packs &&
	366	test_line_count = 1 packs
a831c06a	367	'
bdf56de8	368
c45af94d JK	369	test_expect_success 'background auto gc respects lock for all operations' '
	370	# make sure we run a background auto-gc
	371	test_commit make-pack &&
	372	git repack &&
	373	test_config gc.autopacklimit 1 &&
	374	test_config gc.autodetach true &&
	375
	376	# create a ref whose loose presence we can use to detect a pack-refs run
	377	git update-ref refs/heads/should-be-loose HEAD &&
f95661b7	378	(ls -1 .git/refs/heads .git/reftable >expect \|\| true) &&
c45af94d JK	379
	380	# now fake a concurrent gc that holds the lock; we can use our
	381	# shell pid so that it looks valid.
	382	hostname=$(hostname \|\| echo unknown) &&
c871fbee JS	383	shell_pid=$$ &&
	384	if test_have_prereq MINGW && test -f /proc/$shell_pid/winpid
	385	then
	386	# In Git for Windows, Bash (actually, the MSYS2 runtime) has a
	387	# different idea of PIDs than git.exe (actually Windows). Use
	388	# the Windows PID in this case.
	389	shell_pid=$(cat /proc/$shell_pid/winpid)
	390	fi &&
	391	printf "%d %s" "$shell_pid" "$hostname" >.git/gc.pid &&
c45af94d JK	392
	393	# our gc should exit zero without doing anything
	394	run_and_wait_for_auto_gc &&
f95661b7 HWN	395	(ls -1 .git/refs/heads .git/reftable >actual \|\| true) &&
f95661b7 HWN	396	test_cmp expect actual
c45af94d JK	397	'
c45af94d JK	398
ef09036c SG	399	# DO NOT leave a detached auto gc process running near the end of the
	400	# test script: it can run long enough in the background to racily
	401	# interfere with the cleanup in 'test_done'.
	402
0c8151b6	403	test_done