[thirdparty/git.git] / t / t5319-multi-pack-index.sh

#!/bin/sh

test_description='multi-pack-indexes'
. ./test-lib.sh

objdir=.git/objects

midx_read_expect () {
	NUM_PACKS=$1
	NUM_OBJECTS=$2
	NUM_CHUNKS=$3
	OBJECT_DIR=$4
	EXTRA_CHUNKS="$5"
	{
		cat <<-EOF &&
		header: 4d494458 1 $NUM_CHUNKS $NUM_PACKS
		chunks: pack-names oid-fanout oid-lookup object-offsets$EXTRA_CHUNKS
		num_objects: $NUM_OBJECTS
		packs:
		EOF
		if test $NUM_PACKS -ge 1
		then
			ls $OBJECT_DIR/pack/ | grep idx | sort
		fi &&
		printf "object-dir: $OBJECT_DIR\n"
	} >expect &&
	test-tool read-midx $OBJECT_DIR >actual &&
	test_cmp expect actual
}

test_expect_success 'write midx with no packs' '
	test_when_finished rm -f pack/multi-pack-index &&
	git multi-pack-index --object-dir=. write &&
	midx_read_expect 0 0 4 .
'

generate_objects () {
	i=$1
	iii=$(printf '%03i' $i)
	{
		test-tool genrandom "bar" 200 &&
		test-tool genrandom "baz $iii" 50
	} >wide_delta_$iii &&
	{
		test-tool genrandom "foo"$i 100 &&
		test-tool genrandom "foo"$(( $i + 1 )) 100 &&
		test-tool genrandom "foo"$(( $i + 2 )) 100
	} >deep_delta_$iii &&
	{
		echo $iii &&
		test-tool genrandom "$iii" 8192
	} >file_$iii &&
	git update-index --add file_$iii deep_delta_$iii wide_delta_$iii
}

commit_and_list_objects () {
	{
		echo 101 &&
		test-tool genrandom 100 8192;
	} >file_101 &&
	git update-index --add file_101 &&
	tree=$(git write-tree) &&
	commit=$(git commit-tree $tree -p HEAD</dev/null) &&
	{
		echo $tree &&
		git ls-tree $tree | sed -e "s/.* \\([0-9a-f]*\\)	.*/\\1/"
	} >obj-list &&
	git reset --hard $commit
}

test_expect_success 'create objects' '
	test_commit initial &&
	for i in $(test_seq 1 5)
	do
		generate_objects $i
	done &&
	commit_and_list_objects
'

test_expect_success 'write midx with one v1 pack' '
	pack=$(git pack-objects --index-version=1 $objdir/pack/test <obj-list) &&
	test_when_finished rm $objdir/pack/test-$pack.pack \
		$objdir/pack/test-$pack.idx $objdir/pack/multi-pack-index &&
	git multi-pack-index --object-dir=$objdir write &&
	midx_read_expect 1 18 4 $objdir
'

midx_git_two_modes () {
	git -c core.multiPackIndex=false $1 >expect &&
	git -c core.multiPackIndex=true $1 >actual &&
	if [ "$2" = "sorted" ]
	then
		sort <expect >expect.sorted &&
		mv expect.sorted expect &&
		sort <actual >actual.sorted &&
		mv actual.sorted actual
	fi &&
	test_cmp expect actual
}

compare_results_with_midx () {
	MSG=$1
	test_expect_success "check normal git operations: $MSG" '
		midx_git_two_modes "rev-list --objects --all" &&
		midx_git_two_modes "log --raw" &&
		midx_git_two_modes "count-objects --verbose" &&
		midx_git_two_modes "cat-file --batch-all-objects --batch-check" &&
		midx_git_two_modes "cat-file --batch-all-objects --batch-check --unordered" sorted
	'
}

test_expect_success 'write midx with one v2 pack' '
	git pack-objects --index-version=2,0x40 $objdir/pack/test <obj-list &&
	git multi-pack-index --object-dir=$objdir write &&
	midx_read_expect 1 18 4 $objdir
'

compare_results_with_midx "one v2 pack"

test_expect_success 'corrupt idx not opened' '
	idx=$(test-tool read-midx $objdir | grep "\.idx\$") &&
	mv $objdir/pack/$idx backup-$idx &&
	test_when_finished "mv backup-\$idx \$objdir/pack/\$idx" &&

	# This is the minimum size for a sha-1 based .idx; this lets
	# us pass perfunctory tests, but anything that actually opens and reads
	# the idx file will complain.
	test_copy_bytes 1064 <backup-$idx >$objdir/pack/$idx &&

	git -c core.multiPackIndex=true rev-list --objects --all 2>err &&
	test_must_be_empty err
'

test_expect_success 'add more objects' '
	for i in $(test_seq 6 10)
	do
		generate_objects $i
	done &&
	commit_and_list_objects
'

test_expect_success 'write midx with two packs' '
	git pack-objects --index-version=1 $objdir/pack/test-2 <obj-list &&
	git multi-pack-index --object-dir=$objdir write &&
	midx_read_expect 2 34 4 $objdir
'

compare_results_with_midx "two packs"

test_expect_success 'add more packs' '
	for j in $(test_seq 11 20)
	do
		generate_objects $j &&
		commit_and_list_objects &&
		git pack-objects --index-version=2 $objdir/pack/test-pack <obj-list
	done
'

compare_results_with_midx "mixed mode (two packs + extra)"

test_expect_success 'write midx with twelve packs' '
	git multi-pack-index --object-dir=$objdir write &&
	midx_read_expect 12 74 4 $objdir
'

compare_results_with_midx "twelve packs"

test_expect_success 'verify multi-pack-index success' '
	git multi-pack-index verify --object-dir=$objdir
'

# usage: corrupt_midx_and_verify <pos> <data> <objdir> <string>
corrupt_midx_and_verify() {
	POS=$1 &&
	DATA="${2:-\0}" &&
	OBJDIR=$3 &&
	GREPSTR="$4" &&
	COMMAND="$5" &&
	if test -z "$COMMAND"
	then
		COMMAND="git multi-pack-index verify --object-dir=$OBJDIR"
	fi &&
	FILE=$OBJDIR/pack/multi-pack-index &&
	chmod a+w $FILE &&
	test_when_finished mv midx-backup $FILE &&
	cp $FILE midx-backup &&
	printf "$DATA" | dd of="$FILE" bs=1 seek="$POS" conv=notrunc &&
	test_must_fail $COMMAND 2>test_err &&
	grep -v "^+" test_err >err &&
	test_i18ngrep "$GREPSTR" err
}

test_expect_success 'verify bad signature' '
	corrupt_midx_and_verify 0 "\00" $objdir \
		"multi-pack-index signature"
'

HASH_LEN=20
NUM_OBJECTS=74
MIDX_BYTE_VERSION=4
MIDX_BYTE_OID_VERSION=5
MIDX_BYTE_CHUNK_COUNT=6
MIDX_HEADER_SIZE=12
MIDX_BYTE_CHUNK_ID=$MIDX_HEADER_SIZE
MIDX_BYTE_CHUNK_OFFSET=$(($MIDX_HEADER_SIZE + 4))
MIDX_NUM_CHUNKS=5
MIDX_CHUNK_LOOKUP_WIDTH=12
MIDX_OFFSET_PACKNAMES=$(($MIDX_HEADER_SIZE + \
			 $MIDX_NUM_CHUNKS * $MIDX_CHUNK_LOOKUP_WIDTH))
MIDX_BYTE_PACKNAME_ORDER=$(($MIDX_OFFSET_PACKNAMES + 2))
MIDX_OFFSET_OID_FANOUT=$(($MIDX_OFFSET_PACKNAMES + 652))
MIDX_OID_FANOUT_WIDTH=4
MIDX_BYTE_OID_FANOUT_ORDER=$((MIDX_OFFSET_OID_FANOUT + 250 * $MIDX_OID_FANOUT_WIDTH + 1))
MIDX_OFFSET_OID_LOOKUP=$(($MIDX_OFFSET_OID_FANOUT + 256 * $MIDX_OID_FANOUT_WIDTH))
MIDX_BYTE_OID_LOOKUP=$(($MIDX_OFFSET_OID_LOOKUP + 16 * $HASH_LEN))
MIDX_OFFSET_OBJECT_OFFSETS=$(($MIDX_OFFSET_OID_LOOKUP + $NUM_OBJECTS * $HASH_LEN))
MIDX_OFFSET_WIDTH=8
MIDX_BYTE_PACK_INT_ID=$(($MIDX_OFFSET_OBJECT_OFFSETS + 16 * $MIDX_OFFSET_WIDTH + 2))
MIDX_BYTE_OFFSET=$(($MIDX_OFFSET_OBJECT_OFFSETS + 16 * $MIDX_OFFSET_WIDTH + 6))

test_expect_success 'verify bad version' '
	corrupt_midx_and_verify $MIDX_BYTE_VERSION "\00" $objdir \
		"multi-pack-index version"
'

test_expect_success 'verify bad OID version' '
	corrupt_midx_and_verify $MIDX_BYTE_OID_VERSION "\02" $objdir \
		"hash version"
'

test_expect_success 'verify truncated chunk count' '
	corrupt_midx_and_verify $MIDX_BYTE_CHUNK_COUNT "\01" $objdir \
		"missing required"
'

test_expect_success 'verify extended chunk count' '
	corrupt_midx_and_verify $MIDX_BYTE_CHUNK_COUNT "\07" $objdir \
		"terminating multi-pack-index chunk id appears earlier than expected"
'

test_expect_success 'verify missing required chunk' '
	corrupt_midx_and_verify $MIDX_BYTE_CHUNK_ID "\01" $objdir \
		"missing required"
'

test_expect_success 'verify invalid chunk offset' '
	corrupt_midx_and_verify $MIDX_BYTE_CHUNK_OFFSET "\01" $objdir \
		"invalid chunk offset (too large)"
'

test_expect_success 'verify packnames out of order' '
	corrupt_midx_and_verify $MIDX_BYTE_PACKNAME_ORDER "z" $objdir \
		"pack names out of order"
'

test_expect_success 'verify packnames out of order' '
	corrupt_midx_and_verify $MIDX_BYTE_PACKNAME_ORDER "a" $objdir \
		"failed to load pack"
'

test_expect_success 'verify oid fanout out of order' '
	corrupt_midx_and_verify $MIDX_BYTE_OID_FANOUT_ORDER "\01" $objdir \
		"oid fanout out of order"
'

test_expect_success 'verify oid lookup out of order' '
	corrupt_midx_and_verify $MIDX_BYTE_OID_LOOKUP "\00" $objdir \
		"oid lookup out of order"
'

test_expect_success 'verify incorrect pack-int-id' '
	corrupt_midx_and_verify $MIDX_BYTE_PACK_INT_ID "\07" $objdir \
		"bad pack-int-id"
'

test_expect_success 'verify incorrect offset' '
	corrupt_midx_and_verify $MIDX_BYTE_OFFSET "\07" $objdir \
		"incorrect object offset"
'

test_expect_success 'git-fsck incorrect offset' '
	corrupt_midx_and_verify $MIDX_BYTE_OFFSET "\07" $objdir \
		"incorrect object offset" \
		"git -c core.multipackindex=true fsck"
'

test_expect_success 'repack removes multi-pack-index' '
	test_path_is_file $objdir/pack/multi-pack-index &&
	GIT_TEST_MULTI_PACK_INDEX=0 git repack -adf &&
	test_path_is_missing $objdir/pack/multi-pack-index
'

compare_results_with_midx "after repack"

test_expect_success 'multi-pack-index and pack-bitmap' '
	git -c repack.writeBitmaps=true repack -ad &&
	git multi-pack-index write &&
	git rev-list --test-bitmap HEAD
'

test_expect_success 'multi-pack-index and alternates' '
	git init --bare alt.git &&
	echo $(pwd)/alt.git/objects >.git/objects/info/alternates &&
	echo content1 >file1 &&
	altblob=$(GIT_DIR=alt.git git hash-object -w file1) &&
	git cat-file blob $altblob &&
	git rev-list --all
'

compare_results_with_midx "with alternate (local midx)"

test_expect_success 'multi-pack-index in an alternate' '
	mv .git/objects/pack/* alt.git/objects/pack &&
	test_commit add_local_objects &&
	git repack --local &&
	git multi-pack-index write &&
	midx_read_expect 1 3 4 $objdir &&
	git reset --hard HEAD~1 &&
	rm -f .git/objects/pack/*
'

compare_results_with_midx "with alternate (remote midx)"

# usage: corrupt_data <file> <pos> [<data>]
corrupt_data () {
	file=$1
	pos=$2
	data="${3:-\0}"
	printf "$data" | dd of="$file" bs=1 seek="$pos" conv=notrunc
}

# Force 64-bit offsets by manipulating the idx file.
# This makes the IDX file _incorrect_ so be careful to clean up after!
test_expect_success 'force some 64-bit offsets with pack-objects' '
	mkdir objects64 &&
	mkdir objects64/pack &&
	for i in $(test_seq 1 11)
	do
		generate_objects 11
	done &&
	commit_and_list_objects &&
	pack64=$(git pack-objects --index-version=2,0x40 objects64/pack/test-64 <obj-list) &&
	idx64=objects64/pack/test-64-$pack64.idx &&
	chmod u+w $idx64 &&
	corrupt_data $idx64 2999 "\02" &&
	midx64=$(git multi-pack-index --object-dir=objects64 write) &&
	midx_read_expect 1 63 5 objects64 " large-offsets"
'

test_expect_success 'verify multi-pack-index with 64-bit offsets' '
	git multi-pack-index verify --object-dir=objects64
'

NUM_OBJECTS=63
MIDX_OFFSET_OID_FANOUT=$((MIDX_OFFSET_PACKNAMES + 54))
MIDX_OFFSET_OID_LOOKUP=$((MIDX_OFFSET_OID_FANOUT + 256 * $MIDX_OID_FANOUT_WIDTH))
MIDX_OFFSET_OBJECT_OFFSETS=$(($MIDX_OFFSET_OID_LOOKUP + $NUM_OBJECTS * $HASH_LEN))
MIDX_OFFSET_LARGE_OFFSETS=$(($MIDX_OFFSET_OBJECT_OFFSETS + $NUM_OBJECTS * $MIDX_OFFSET_WIDTH))
MIDX_BYTE_LARGE_OFFSET=$(($MIDX_OFFSET_LARGE_OFFSETS + 3))

test_expect_success 'verify incorrect 64-bit offset' '
	corrupt_midx_and_verify $MIDX_BYTE_LARGE_OFFSET "\07" objects64 \
		"incorrect object offset"
'

test_expect_success 'setup expire tests' '
	mkdir dup &&
	(
		cd dup &&
		git init &&
		test-tool genrandom "data" 4096 >large_file.txt &&
		git update-index --add large_file.txt &&
		for i in $(test_seq 1 20)
		do
			test_commit $i
		done &&
		git branch A HEAD &&
		git branch B HEAD~8 &&
		git branch C HEAD~13 &&
		git branch D HEAD~16 &&
		git branch E HEAD~18 &&
		git pack-objects --revs .git/objects/pack/pack-A <<-EOF &&
		refs/heads/A
		^refs/heads/B
		EOF
		git pack-objects --revs .git/objects/pack/pack-B <<-EOF &&
		refs/heads/B
		^refs/heads/C
		EOF
		git pack-objects --revs .git/objects/pack/pack-C <<-EOF &&
		refs/heads/C
		^refs/heads/D
		EOF
		git pack-objects --revs .git/objects/pack/pack-D <<-EOF &&
		refs/heads/D
		^refs/heads/E
		EOF
		git pack-objects --revs .git/objects/pack/pack-E <<-EOF &&
		refs/heads/E
		EOF
		git multi-pack-index write &&
		cp -r .git/objects/pack .git/objects/pack-backup
	)
'

test_expect_success 'expire does not remove any packs' '
	(
		cd dup &&
		ls .git/objects/pack >expect &&
		git multi-pack-index expire &&
		ls .git/objects/pack >actual &&
		test_cmp expect actual
	)
'

test_expect_success 'expire removes unreferenced packs' '
	(
		cd dup &&
		git pack-objects --revs .git/objects/pack/pack-combined <<-EOF &&
		refs/heads/A
		^refs/heads/C
		EOF
		git multi-pack-index write &&
		ls .git/objects/pack | grep -v -e pack-[AB] >expect &&
		git multi-pack-index expire &&
		ls .git/objects/pack >actual &&
		test_cmp expect actual &&
		ls .git/objects/pack/ | grep idx >expect-idx &&
		test-tool read-midx .git/objects | grep idx >actual-midx &&
		test_cmp expect-idx actual-midx &&
		git multi-pack-index verify &&
		git fsck
	)
'

test_expect_success 'repack with minimum size does not alter existing packs' '
	(
		cd dup &&
		rm -rf .git/objects/pack &&
		mv .git/objects/pack-backup .git/objects/pack &&
		touch -m -t 201901010000 .git/objects/pack/pack-D* &&
		touch -m -t 201901010001 .git/objects/pack/pack-C* &&
		touch -m -t 201901010002 .git/objects/pack/pack-B* &&
		touch -m -t 201901010003 .git/objects/pack/pack-A* &&
		ls .git/objects/pack >expect &&
		MINSIZE=$(test-tool path-utils file-size .git/objects/pack/*pack | sort -n | head -n 1) &&
		git multi-pack-index repack --batch-size=$MINSIZE &&
		ls .git/objects/pack >actual &&
		test_cmp expect actual
	)
'

test_expect_success 'repack creates a new pack' '
	(
		cd dup &&
		ls .git/objects/pack/*idx >idx-list &&
		test_line_count = 5 idx-list &&
		THIRD_SMALLEST_SIZE=$(test-tool path-utils file-size .git/objects/pack/*pack | sort -n | head -n 3 | tail -n 1) &&
		BATCH_SIZE=$(($THIRD_SMALLEST_SIZE + 1)) &&
		git multi-pack-index repack --batch-size=$BATCH_SIZE &&
		ls .git/objects/pack/*idx >idx-list &&
		test_line_count = 6 idx-list &&
		test-tool read-midx .git/objects | grep idx >midx-list &&
		test_line_count = 6 midx-list
	)
'

test_expect_success 'expire removes repacked packs' '
	(
		cd dup &&
		ls -al .git/objects/pack/*pack &&
		ls -S .git/objects/pack/*pack | head -n 4 >expect &&
		git multi-pack-index expire &&
		ls -S .git/objects/pack/*pack >actual &&
		test_cmp expect actual &&
		test-tool read-midx .git/objects | grep idx >midx-list &&
		test_line_count = 4 midx-list
	)
'

test_expect_success 'expire works when adding new packs' '
	(
		cd dup &&
		git pack-objects --revs .git/objects/pack/pack-combined <<-EOF &&
		refs/heads/A
		^refs/heads/B
		EOF
		git pack-objects --revs .git/objects/pack/pack-combined <<-EOF &&
		refs/heads/B
		^refs/heads/C
		EOF
		git pack-objects --revs .git/objects/pack/pack-combined <<-EOF &&
		refs/heads/C
		^refs/heads/D
		EOF
		git multi-pack-index write &&
		git pack-objects --revs .git/objects/pack/a-pack <<-EOF &&
		refs/heads/D
		^refs/heads/E
		EOF
		git multi-pack-index write &&
		git pack-objects --revs .git/objects/pack/z-pack <<-EOF &&
		refs/heads/E
		EOF
		git multi-pack-index expire &&
		ls .git/objects/pack/ | grep idx >expect &&
		test-tool read-midx .git/objects | grep idx >actual &&
		test_cmp expect actual &&
		git multi-pack-index verify
	)
'

test_expect_success 'expire respects .keep files' '
	(
		cd dup &&
		git pack-objects --revs .git/objects/pack/pack-all <<-EOF &&
		refs/heads/A
		EOF
		git multi-pack-index write &&
		PACKA=$(ls .git/objects/pack/a-pack*\.pack | sed s/\.pack\$//) &&
		touch $PACKA.keep &&
		git multi-pack-index expire &&
		ls -S .git/objects/pack/a-pack* | grep $PACKA >a-pack-files &&
		test_line_count = 3 a-pack-files &&
		test-tool read-midx .git/objects | grep idx >midx-list &&
		test_line_count = 2 midx-list
	)
'

test_expect_success 'repack --batch-size=0 repacks everything' '
	(
		cd dup &&
		rm .git/objects/pack/*.keep &&
		ls .git/objects/pack/*idx >idx-list &&
		test_line_count = 2 idx-list &&
		git multi-pack-index repack --batch-size=0 &&
		ls .git/objects/pack/*idx >idx-list &&
		test_line_count = 3 idx-list &&
		test-tool read-midx .git/objects | grep idx >midx-list &&
		test_line_count = 3 midx-list &&
		git multi-pack-index expire &&
		ls -al .git/objects/pack/*idx >idx-list &&
		test_line_count = 1 idx-list &&
		git multi-pack-index repack --batch-size=0 &&
		ls -al .git/objects/pack/*idx >new-idx-list &&
		test_cmp idx-list new-idx-list
	)
'

test_done
Commit	Line	Data
a3407730 DS	1	#!/bin/sh
	2
	3	test_description='multi-pack-indexes'
	4	. ./test-lib.sh
	5
c4d25228 DS	6	objdir=.git/objects
c4d25228 DS	7
4d80560c	8	midx_read_expect () {
396f2570	9	NUM_PACKS=$1
d7cacf29	10	NUM_OBJECTS=$2
662148c4 DS	11	NUM_CHUNKS=$3
	12	OBJECT_DIR=$4
	13	EXTRA_CHUNKS="$5"
3227565c DS	14	{
3227565c DS	15	cat <<-EOF &&
662148c4 DS	16	header: 4d494458 1 $NUM_CHUNKS $NUM_PACKS
662148c4 DS	17	chunks: pack-names oid-fanout oid-lookup object-offsets$EXTRA_CHUNKS
d7cacf29	18	num_objects: $NUM_OBJECTS
3227565c DS	19	packs:
	20	EOF
	21	if test $NUM_PACKS -ge 1
	22	then
662148c4	23	ls $OBJECT_DIR/pack/ \| grep idx \| sort
3227565c	24	fi &&
662148c4	25	printf "object-dir: $OBJECT_DIR\n"
3227565c	26	} >expect &&
662148c4	27	test-tool read-midx $OBJECT_DIR >actual &&
4d80560c DS	28	test_cmp expect actual
	29	}
	30
a3407730	31	test_expect_success 'write midx with no packs' '
fc59e748 DS	32	test_when_finished rm -f pack/multi-pack-index &&
fc59e748 DS	33	git multi-pack-index --object-dir=. write &&
662148c4	34	midx_read_expect 0 0 4 .
a3407730 DS	35	'
a3407730 DS	36
2c381335 DS	37	generate_objects () {
	38	i=$1
	39	iii=$(printf '%03i' $i)
	40	{
	41	test-tool genrandom "bar" 200 &&
	42	test-tool genrandom "baz $iii" 50
	43	} >wide_delta_$iii &&
	44	{
	45	test-tool genrandom "foo"$i 100 &&
	46	test-tool genrandom "foo"$(( $i + 1 )) 100 &&
	47	test-tool genrandom "foo"$(( $i + 2 )) 100
	48	} >deep_delta_$iii &&
	49	{
	50	echo $iii &&
	51	test-tool genrandom "$iii" 8192
	52	} >file_$iii &&
	53	git update-index --add file_$iii deep_delta_$iii wide_delta_$iii
	54	}
	55
	56	commit_and_list_objects () {
	57	{
	58	echo 101 &&
	59	test-tool genrandom 100 8192;
	60	} >file_101 &&
	61	git update-index --add file_101 &&
	62	tree=$(git write-tree) &&
	63	commit=$(git commit-tree $tree -p HEAD</dev/null) &&
	64	{
	65	echo $tree &&
	66	git ls-tree $tree \| sed -e "s/.* \\([0-9a-f]\\) ./\\1/"
	67	} >obj-list &&
	68	git reset --hard $commit
	69	}
	70
	71	test_expect_success 'create objects' '
	72	test_commit initial &&
	73	for i in $(test_seq 1 5)
	74	do
	75	generate_objects $i
	76	done &&
	77	commit_and_list_objects
	78	'
	79
	80	test_expect_success 'write midx with one v1 pack' '
c4d25228 DS	81	pack=$(git pack-objects --index-version=1 $objdir/pack/test <obj-list) &&
	82	test_when_finished rm $objdir/pack/test-$pack.pack \
	83	$objdir/pack/test-$pack.idx $objdir/pack/multi-pack-index &&
	84	git multi-pack-index --object-dir=$objdir write &&
	85	midx_read_expect 1 18 4 $objdir
2c381335 DS	86	'
2c381335 DS	87
c4d25228	88	midx_git_two_modes () {
b4a14394 JK	89	git -c core.multiPackIndex=false $1 >expect &&
b4a14394 JK	90	git -c core.multiPackIndex=true $1 >actual &&
e9ab2ed7 DS	91	if [ "$2" = "sorted" ]
e9ab2ed7 DS	92	then
b4a14394 JK	93	sort <expect >expect.sorted &&
	94	mv expect.sorted expect &&
	95	sort <actual >actual.sorted &&
	96	mv actual.sorted actual
e9ab2ed7	97	fi &&
c4d25228 DS	98	test_cmp expect actual
	99	}
	100
	101	compare_results_with_midx () {
	102	MSG=$1
	103	test_expect_success "check normal git operations: $MSG" '
	104	midx_git_two_modes "rev-list --objects --all" &&
e9ab2ed7 DS	105	midx_git_two_modes "log --raw" &&
e9ab2ed7 DS	106	midx_git_two_modes "count-objects --verbose" &&
5670ad98 JK	107	midx_git_two_modes "cat-file --batch-all-objects --batch-check" &&
5670ad98 JK	108	midx_git_two_modes "cat-file --batch-all-objects --batch-check --unordered" sorted
c4d25228 DS	109	'
	110	}
	111
2c381335	112	test_expect_success 'write midx with one v2 pack' '
c4d25228 DS	113	git pack-objects --index-version=2,0x40 $objdir/pack/test <obj-list &&
	114	git multi-pack-index --object-dir=$objdir write &&
	115	midx_read_expect 1 18 4 $objdir
2c381335 DS	116	'
2c381335 DS	117
c4d25228 DS	118	compare_results_with_midx "one v2 pack"
c4d25228 DS	119
fc789156 JK	120	test_expect_success 'corrupt idx not opened' '
	121	idx=$(test-tool read-midx $objdir \| grep "\.idx\$") &&
	122	mv $objdir/pack/$idx backup-$idx &&
	123	test_when_finished "mv backup-\$idx \$objdir/pack/\$idx" &&
	124
	125	# This is the minimum size for a sha-1 based .idx; this lets
	126	# us pass perfunctory tests, but anything that actually opens and reads
	127	# the idx file will complain.
	128	test_copy_bytes 1064 <backup-$idx >$objdir/pack/$idx &&
	129
	130	git -c core.multiPackIndex=true rev-list --objects --all 2>err &&
	131	test_must_be_empty err
	132	'
	133
2c381335 DS	134	test_expect_success 'add more objects' '
	135	for i in $(test_seq 6 10)
	136	do
	137	generate_objects $i
	138	done &&
	139	commit_and_list_objects
	140	'
	141
	142	test_expect_success 'write midx with two packs' '
c4d25228 DS	143	git pack-objects --index-version=1 $objdir/pack/test-2 <obj-list &&
	144	git multi-pack-index --object-dir=$objdir write &&
	145	midx_read_expect 2 34 4 $objdir
2c381335 DS	146	'
2c381335 DS	147
c4d25228 DS	148	compare_results_with_midx "two packs"
c4d25228 DS	149
2c381335 DS	150	test_expect_success 'add more packs' '
	151	for j in $(test_seq 11 20)
	152	do
	153	generate_objects $j &&
	154	commit_and_list_objects &&
c4d25228	155	git pack-objects --index-version=2 $objdir/pack/test-pack <obj-list
2c381335 DS	156	done
	157	'
	158
c4d25228 DS	159	compare_results_with_midx "mixed mode (two packs + extra)"
c4d25228 DS	160
2c381335	161	test_expect_success 'write midx with twelve packs' '
c4d25228 DS	162	git multi-pack-index --object-dir=$objdir write &&
c4d25228 DS	163	midx_read_expect 12 74 4 $objdir
662148c4 DS	164	'
662148c4 DS	165
c4d25228 DS	166	compare_results_with_midx "twelve packs"
c4d25228 DS	167
56ee7ff1 DS	168	test_expect_success 'verify multi-pack-index success' '
	169	git multi-pack-index verify --object-dir=$objdir
	170	'
	171
53ad0407 DS	172	# usage: corrupt_midx_and_verify <pos> <data> <objdir> <string>
	173	corrupt_midx_and_verify() {
	174	POS=$1 &&
	175	DATA="${2:-\0}" &&
	176	OBJDIR=$3 &&
	177	GREPSTR="$4" &&
66ec0390 DS	178	COMMAND="$5" &&
	179	if test -z "$COMMAND"
	180	then
	181	COMMAND="git multi-pack-index verify --object-dir=$OBJDIR"
	182	fi &&
53ad0407 DS	183	FILE=$OBJDIR/pack/multi-pack-index &&
	184	chmod a+w $FILE &&
	185	test_when_finished mv midx-backup $FILE &&
	186	cp $FILE midx-backup &&
	187	printf "$DATA" \| dd of="$FILE" bs=1 seek="$POS" conv=notrunc &&
66ec0390	188	test_must_fail $COMMAND 2>test_err &&
53ad0407 DS	189	grep -v "^+" test_err >err &&
	190	test_i18ngrep "$GREPSTR" err
	191	}
	192
	193	test_expect_success 'verify bad signature' '
	194	corrupt_midx_and_verify 0 "\00" $objdir \
	195	"multi-pack-index signature"
	196	'
	197
55c5648d	198	HASH_LEN=20
cc6af73c	199	NUM_OBJECTS=74
53ad0407 DS	200	MIDX_BYTE_VERSION=4
	201	MIDX_BYTE_OID_VERSION=5
	202	MIDX_BYTE_CHUNK_COUNT=6
d3f8e211 DS	203	MIDX_HEADER_SIZE=12
	204	MIDX_BYTE_CHUNK_ID=$MIDX_HEADER_SIZE
	205	MIDX_BYTE_CHUNK_OFFSET=$(($MIDX_HEADER_SIZE + 4))
8e72a3c3 DS	206	MIDX_NUM_CHUNKS=5
	207	MIDX_CHUNK_LOOKUP_WIDTH=12
	208	MIDX_OFFSET_PACKNAMES=$(($MIDX_HEADER_SIZE + \
	209	$MIDX_NUM_CHUNKS * $MIDX_CHUNK_LOOKUP_WIDTH))
	210	MIDX_BYTE_PACKNAME_ORDER=$(($MIDX_OFFSET_PACKNAMES + 2))
2f23d3f3 DS	211	MIDX_OFFSET_OID_FANOUT=$(($MIDX_OFFSET_PACKNAMES + 652))
	212	MIDX_OID_FANOUT_WIDTH=4
	213	MIDX_BYTE_OID_FANOUT_ORDER=$((MIDX_OFFSET_OID_FANOUT + 250 * $MIDX_OID_FANOUT_WIDTH + 1))
55c5648d DS	214	MIDX_OFFSET_OID_LOOKUP=$(($MIDX_OFFSET_OID_FANOUT + 256 * $MIDX_OID_FANOUT_WIDTH))
55c5648d DS	215	MIDX_BYTE_OID_LOOKUP=$(($MIDX_OFFSET_OID_LOOKUP + 16 * $HASH_LEN))
cc6af73c DS	216	MIDX_OFFSET_OBJECT_OFFSETS=$(($MIDX_OFFSET_OID_LOOKUP + $NUM_OBJECTS * $HASH_LEN))
	217	MIDX_OFFSET_WIDTH=8
	218	MIDX_BYTE_PACK_INT_ID=$(($MIDX_OFFSET_OBJECT_OFFSETS + 16 * $MIDX_OFFSET_WIDTH + 2))
	219	MIDX_BYTE_OFFSET=$(($MIDX_OFFSET_OBJECT_OFFSETS + 16 * $MIDX_OFFSET_WIDTH + 6))
53ad0407 DS	220
	221	test_expect_success 'verify bad version' '
	222	corrupt_midx_and_verify $MIDX_BYTE_VERSION "\00" $objdir \
	223	"multi-pack-index version"
	224	'
	225
	226	test_expect_success 'verify bad OID version' '
	227	corrupt_midx_and_verify $MIDX_BYTE_OID_VERSION "\02" $objdir \
	228	"hash version"
	229	'
	230
	231	test_expect_success 'verify truncated chunk count' '
	232	corrupt_midx_and_verify $MIDX_BYTE_CHUNK_COUNT "\01" $objdir \
	233	"missing required"
	234	'
	235
	236	test_expect_success 'verify extended chunk count' '
	237	corrupt_midx_and_verify $MIDX_BYTE_CHUNK_COUNT "\07" $objdir \
	238	"terminating multi-pack-index chunk id appears earlier than expected"
	239	'
	240
d3f8e211 DS	241	test_expect_success 'verify missing required chunk' '
	242	corrupt_midx_and_verify $MIDX_BYTE_CHUNK_ID "\01" $objdir \
	243	"missing required"
	244	'
	245
	246	test_expect_success 'verify invalid chunk offset' '
	247	corrupt_midx_and_verify $MIDX_BYTE_CHUNK_OFFSET "\01" $objdir \
	248	"invalid chunk offset (too large)"
	249	'
	250
8e72a3c3 DS	251	test_expect_success 'verify packnames out of order' '
	252	corrupt_midx_and_verify $MIDX_BYTE_PACKNAME_ORDER "z" $objdir \
	253	"pack names out of order"
	254	'
	255
d4bf1d88 DS	256	test_expect_success 'verify packnames out of order' '
	257	corrupt_midx_and_verify $MIDX_BYTE_PACKNAME_ORDER "a" $objdir \
	258	"failed to load pack"
	259	'
	260
2f23d3f3 DS	261	test_expect_success 'verify oid fanout out of order' '
	262	corrupt_midx_and_verify $MIDX_BYTE_OID_FANOUT_ORDER "\01" $objdir \
	263	"oid fanout out of order"
	264	'
	265
55c5648d DS	266	test_expect_success 'verify oid lookup out of order' '
	267	corrupt_midx_and_verify $MIDX_BYTE_OID_LOOKUP "\00" $objdir \
	268	"oid lookup out of order"
	269	'
	270
cc6af73c DS	271	test_expect_success 'verify incorrect pack-int-id' '
	272	corrupt_midx_and_verify $MIDX_BYTE_PACK_INT_ID "\07" $objdir \
	273	"bad pack-int-id"
	274	'
	275
	276	test_expect_success 'verify incorrect offset' '
	277	corrupt_midx_and_verify $MIDX_BYTE_OFFSET "\07" $objdir \
	278	"incorrect object offset"
	279	'
	280
66ec0390 DS	281	test_expect_success 'git-fsck incorrect offset' '
	282	corrupt_midx_and_verify $MIDX_BYTE_OFFSET "\07" $objdir \
	283	"incorrect object offset" \
	284	"git -c core.multipackindex=true fsck"
	285	'
	286
525e18c0 DS	287	test_expect_success 'repack removes multi-pack-index' '
525e18c0 DS	288	test_path_is_file $objdir/pack/multi-pack-index &&
0465a505	289	GIT_TEST_MULTI_PACK_INDEX=0 git repack -adf &&
525e18c0 DS	290	test_path_is_missing $objdir/pack/multi-pack-index
	291	'
	292
	293	compare_results_with_midx "after repack"
	294
e9ab2ed7 DS	295	test_expect_success 'multi-pack-index and pack-bitmap' '
	296	git -c repack.writeBitmaps=true repack -ad &&
	297	git multi-pack-index write &&
	298	git rev-list --test-bitmap HEAD
	299	'
	300
29e2016b DS	301	test_expect_success 'multi-pack-index and alternates' '
	302	git init --bare alt.git &&
	303	echo $(pwd)/alt.git/objects >.git/objects/info/alternates &&
	304	echo content1 >file1 &&
	305	altblob=$(GIT_DIR=alt.git git hash-object -w file1) &&
	306	git cat-file blob $altblob &&
	307	git rev-list --all
	308	'
	309
	310	compare_results_with_midx "with alternate (local midx)"
	311
	312	test_expect_success 'multi-pack-index in an alternate' '
6a22d521 DS	313	mv .git/objects/pack/* alt.git/objects/pack &&
	314	test_commit add_local_objects &&
	315	git repack --local &&
	316	git multi-pack-index write &&
	317	midx_read_expect 1 3 4 $objdir &&
	318	git reset --hard HEAD~1 &&
	319	rm -f .git/objects/pack/*
29e2016b DS	320	'
	321
	322	compare_results_with_midx "with alternate (remote midx)"
	323
662148c4 DS	324	# usage: corrupt_data <file> <pos> [<data>]
	325	corrupt_data () {
	326	file=$1
	327	pos=$2
	328	data="${3:-\0}"
	329	printf "$data" \| dd of="$file" bs=1 seek="$pos" conv=notrunc
	330	}
	331
	332	# Force 64-bit offsets by manipulating the idx file.
	333	# This makes the IDX file _incorrect_ so be careful to clean up after!
	334	test_expect_success 'force some 64-bit offsets with pack-objects' '
	335	mkdir objects64 &&
	336	mkdir objects64/pack &&
	337	for i in $(test_seq 1 11)
	338	do
	339	generate_objects 11
	340	done &&
	341	commit_and_list_objects &&
	342	pack64=$(git pack-objects --index-version=2,0x40 objects64/pack/test-64 <obj-list) &&
	343	idx64=objects64/pack/test-64-$pack64.idx &&
	344	chmod u+w $idx64 &&
	345	corrupt_data $idx64 2999 "\02" &&
	346	midx64=$(git multi-pack-index --object-dir=objects64 write) &&
	347	midx_read_expect 1 63 5 objects64 " large-offsets"
2c381335 DS	348	'
2c381335 DS	349
56ee7ff1 DS	350	test_expect_success 'verify multi-pack-index with 64-bit offsets' '
	351	git multi-pack-index verify --object-dir=objects64
	352	'
	353
cc6af73c DS	354	NUM_OBJECTS=63
	355	MIDX_OFFSET_OID_FANOUT=$((MIDX_OFFSET_PACKNAMES + 54))
	356	MIDX_OFFSET_OID_LOOKUP=$((MIDX_OFFSET_OID_FANOUT + 256 * $MIDX_OID_FANOUT_WIDTH))
	357	MIDX_OFFSET_OBJECT_OFFSETS=$(($MIDX_OFFSET_OID_LOOKUP + $NUM_OBJECTS * $HASH_LEN))
	358	MIDX_OFFSET_LARGE_OFFSETS=$(($MIDX_OFFSET_OBJECT_OFFSETS + $NUM_OBJECTS * $MIDX_OFFSET_WIDTH))
	359	MIDX_BYTE_LARGE_OFFSET=$(($MIDX_OFFSET_LARGE_OFFSETS + 3))
	360
	361	test_expect_success 'verify incorrect 64-bit offset' '
	362	corrupt_midx_and_verify $MIDX_BYTE_LARGE_OFFSET "\07" objects64 \
	363	"incorrect object offset"
	364	'
	365
cff97116 DS	366	test_expect_success 'setup expire tests' '
	367	mkdir dup &&
	368	(
	369	cd dup &&
	370	git init &&
	371	test-tool genrandom "data" 4096 >large_file.txt &&
	372	git update-index --add large_file.txt &&
	373	for i in $(test_seq 1 20)
	374	do
	375	test_commit $i
	376	done &&
	377	git branch A HEAD &&
	378	git branch B HEAD~8 &&
	379	git branch C HEAD~13 &&
	380	git branch D HEAD~16 &&
	381	git branch E HEAD~18 &&
	382	git pack-objects --revs .git/objects/pack/pack-A <<-EOF &&
	383	refs/heads/A
	384	^refs/heads/B
	385	EOF
	386	git pack-objects --revs .git/objects/pack/pack-B <<-EOF &&
	387	refs/heads/B
	388	^refs/heads/C
	389	EOF
	390	git pack-objects --revs .git/objects/pack/pack-C <<-EOF &&
	391	refs/heads/C
	392	^refs/heads/D
	393	EOF
	394	git pack-objects --revs .git/objects/pack/pack-D <<-EOF &&
	395	refs/heads/D
	396	^refs/heads/E
	397	EOF
	398	git pack-objects --revs .git/objects/pack/pack-E <<-EOF &&
	399	refs/heads/E
	400	EOF
2af890bb DS	401	git multi-pack-index write &&
2af890bb DS	402	cp -r .git/objects/pack .git/objects/pack-backup
cff97116 DS	403	)
	404	'
	405
	406	test_expect_success 'expire does not remove any packs' '
	407	(
	408	cd dup &&
	409	ls .git/objects/pack >expect &&
	410	git multi-pack-index expire &&
	411	ls .git/objects/pack >actual &&
	412	test_cmp expect actual
	413	)
	414	'
	415
19575c7c DS	416	test_expect_success 'expire removes unreferenced packs' '
	417	(
	418	cd dup &&
	419	git pack-objects --revs .git/objects/pack/pack-combined <<-EOF &&
	420	refs/heads/A
	421	^refs/heads/C
	422	EOF
	423	git multi-pack-index write &&
	424	ls .git/objects/pack \| grep -v -e pack-[AB] >expect &&
	425	git multi-pack-index expire &&
	426	ls .git/objects/pack >actual &&
	427	test_cmp expect actual &&
	428	ls .git/objects/pack/ \| grep idx >expect-idx &&
	429	test-tool read-midx .git/objects \| grep idx >actual-midx &&
	430	test_cmp expect-idx actual-midx &&
	431	git multi-pack-index verify &&
	432	git fsck
	433	)
	434	'
	435
2af890bb DS	436	test_expect_success 'repack with minimum size does not alter existing packs' '
	437	(
	438	cd dup &&
	439	rm -rf .git/objects/pack &&
	440	mv .git/objects/pack-backup .git/objects/pack &&
	441	touch -m -t 201901010000 .git/objects/pack/pack-D* &&
	442	touch -m -t 201901010001 .git/objects/pack/pack-C* &&
	443	touch -m -t 201901010002 .git/objects/pack/pack-B* &&
	444	touch -m -t 201901010003 .git/objects/pack/pack-A* &&
	445	ls .git/objects/pack >expect &&
3612c233	446	MINSIZE=$(test-tool path-utils file-size .git/objects/pack/*pack \| sort -n \| head -n 1) &&
2af890bb DS	447	git multi-pack-index repack --batch-size=$MINSIZE &&
	448	ls .git/objects/pack >actual &&
	449	test_cmp expect actual
	450	)
	451	'
	452
ce1e4a10 DS	453	test_expect_success 'repack creates a new pack' '
	454	(
	455	cd dup &&
	456	ls .git/objects/pack/*idx >idx-list &&
	457	test_line_count = 5 idx-list &&
3612c233	458	THIRD_SMALLEST_SIZE=$(test-tool path-utils file-size .git/objects/pack/*pack \| sort -n \| head -n 3 \| tail -n 1) &&
ce1e4a10 DS	459	BATCH_SIZE=$(($THIRD_SMALLEST_SIZE + 1)) &&
	460	git multi-pack-index repack --batch-size=$BATCH_SIZE &&
	461	ls .git/objects/pack/*idx >idx-list &&
	462	test_line_count = 6 idx-list &&
	463	test-tool read-midx .git/objects \| grep idx >midx-list &&
	464	test_line_count = 6 midx-list
	465	)
	466	'
	467
	468	test_expect_success 'expire removes repacked packs' '
	469	(
	470	cd dup &&
	471	ls -al .git/objects/pack/*pack &&
	472	ls -S .git/objects/pack/*pack \| head -n 4 >expect &&
	473	git multi-pack-index expire &&
	474	ls -S .git/objects/pack/*pack >actual &&
	475	test_cmp expect actual &&
	476	test-tool read-midx .git/objects \| grep idx >midx-list &&
	477	test_line_count = 4 midx-list
	478	)
	479	'
	480
d2743315 DS	481	test_expect_success 'expire works when adding new packs' '
	482	(
	483	cd dup &&
	484	git pack-objects --revs .git/objects/pack/pack-combined <<-EOF &&
	485	refs/heads/A
	486	^refs/heads/B
	487	EOF
	488	git pack-objects --revs .git/objects/pack/pack-combined <<-EOF &&
	489	refs/heads/B
	490	^refs/heads/C
	491	EOF
	492	git pack-objects --revs .git/objects/pack/pack-combined <<-EOF &&
	493	refs/heads/C
	494	^refs/heads/D
	495	EOF
	496	git multi-pack-index write &&
	497	git pack-objects --revs .git/objects/pack/a-pack <<-EOF &&
	498	refs/heads/D
	499	^refs/heads/E
	500	EOF
	501	git multi-pack-index write &&
	502	git pack-objects --revs .git/objects/pack/z-pack <<-EOF &&
	503	refs/heads/E
	504	EOF
	505	git multi-pack-index expire &&
	506	ls .git/objects/pack/ \| grep idx >expect &&
	507	test-tool read-midx .git/objects \| grep idx >actual &&
	508	test_cmp expect actual &&
	509	git multi-pack-index verify
	510	)
	511	'
	512
10bfa3f7 DS	513	test_expect_success 'expire respects .keep files' '
	514	(
	515	cd dup &&
	516	git pack-objects --revs .git/objects/pack/pack-all <<-EOF &&
	517	refs/heads/A
	518	EOF
	519	git multi-pack-index write &&
	520	PACKA=$(ls .git/objects/pack/a-pack*\.pack \| sed s/\.pack\$//) &&
	521	touch $PACKA.keep &&
	522	git multi-pack-index expire &&
	523	ls -S .git/objects/pack/a-pack* \| grep $PACKA >a-pack-files &&
	524	test_line_count = 3 a-pack-files &&
	525	test-tool read-midx .git/objects \| grep idx >midx-list &&
	526	test_line_count = 2 midx-list
	527	)
	528	'
	529
b526d8cb DS	530	test_expect_success 'repack --batch-size=0 repacks everything' '
	531	(
	532	cd dup &&
	533	rm .git/objects/pack/*.keep &&
	534	ls .git/objects/pack/*idx >idx-list &&
	535	test_line_count = 2 idx-list &&
	536	git multi-pack-index repack --batch-size=0 &&
	537	ls .git/objects/pack/*idx >idx-list &&
	538	test_line_count = 3 idx-list &&
	539	test-tool read-midx .git/objects \| grep idx >midx-list &&
	540	test_line_count = 3 midx-list &&
	541	git multi-pack-index expire &&
	542	ls -al .git/objects/pack/*idx >idx-list &&
	543	test_line_count = 1 idx-list &&
	544	git multi-pack-index repack --batch-size=0 &&
	545	ls -al .git/objects/pack/*idx >new-idx-list &&
	546	test_cmp idx-list new-idx-list
	547	)
	548	'
10bfa3f7	549
a3407730	550	test_done