t/t7700-repack.sh - jrn/git - Git at Google

 #!/bin/sh

 test_description='git repack works correctly'

 . ./test-lib.sh
 . "${TEST_DIRECTORY}/lib-bitmap.sh"
 . "${TEST_DIRECTORY}/lib-midx.sh"
 . "${TEST_DIRECTORY}/lib-terminal.sh"

 commit_and_pack () {
 	test_commit "$@" 1>&2 &&
 	incrpackid=$(git pack-objects --all --unpacked --incremental .git/objects/pack/pack </dev/null) &&
 	echo pack-${incrpackid}.pack
 }

 test_no_missing_in_packs () {
 	myidx=$(ls -1 .git/objects/pack/*.idx) &&
 	test_path_is_file "$myidx" &&
 	git verify-pack -v alt_objects/pack/*.idx >orig.raw &&
 	sed -n -e "s/^\($OID_REGEX\).*/\1/p" orig.raw | sort >orig &&
 	git verify-pack -v $myidx >dest.raw &&
 	cut -d" " -f1 dest.raw | sort >dest &&
 	comm -23 orig dest >missing &&
 	test_must_be_empty missing
 }

 # we expect $packid and $oid to be defined
 test_has_duplicate_object () {
 	want_duplicate_object="$1"
 	found_duplicate_object=false
 	for p in .git/objects/pack/*.idx
 	do
 		idx=$(basename $p)
 		test "pack-$packid.idx" = "$idx" && continue
 		git verify-pack -v $p >packlist || return $?
 		if grep "^$oid" packlist
 		then
 			found_duplicate_object=true
 			echo "DUPLICATE OBJECT FOUND"
 			break
 		fi
 	done &&
 	test "$want_duplicate_object" = "$found_duplicate_object"
 }

 test_expect_success 'objects in packs marked .keep are not repacked' '
 	echo content1 >file1 &&
 	echo content2 >file2 &&
 	git add . &&
 	test_tick &&
 	git commit -m initial_commit &&
 	# Create two packs
 	# The first pack will contain all of the objects except one
 	git rev-list --objects --all >objs &&
 	grep -v file2 objs | git pack-objects pack &&
 	# The second pack will contain the excluded object
 	packid=$(grep file2 objs | git pack-objects pack) &&
 	>pack-$packid.keep &&
 	git verify-pack -v pack-$packid.idx >packlist &&
 	oid=$(head -n 1 packlist | sed -e "s/^\($OID_REGEX\).*/\1/") &&
 	mv pack-* .git/objects/pack/ &&
 	git repack -A -d -l &&
 	git prune-packed &&
 	test_has_duplicate_object false
 '

 test_expect_success 'writing bitmaps via command-line can duplicate .keep objects' '
 	# build on $oid, $packid, and .keep state from previous
 	GIT_TEST_MULTI_PACK_INDEX_WRITE_BITMAP=0 git repack -Adbl &&
 	test_has_duplicate_object true
 '

 test_expect_success 'writing bitmaps via config can duplicate .keep objects' '
 	# build on $oid, $packid, and .keep state from previous
 	GIT_TEST_MULTI_PACK_INDEX_WRITE_BITMAP=0 \
 		git -c repack.writebitmaps=true repack -Adl &&
 	test_has_duplicate_object true
 '

 test_expect_success 'loose objects in alternate ODB are not repacked' '
 	mkdir alt_objects &&
 	echo $(pwd)/alt_objects >.git/objects/info/alternates &&
 	echo content3 >file3 &&
 	oid=$(GIT_OBJECT_DIRECTORY=alt_objects git hash-object -w file3) &&
 	git add file3 &&
 	test_tick &&
 	git commit -m commit_file3 &&
 	git repack -a -d -l &&
 	git prune-packed &&
 	test_has_duplicate_object false
 '

 test_expect_success 'packed obs in alt ODB are repacked even when local repo is packless' '
 	mkdir alt_objects/pack &&
 	mv .git/objects/pack/* alt_objects/pack &&
 	git repack -a &&
 	test_no_missing_in_packs
 '

 test_expect_success 'packed obs in alt ODB are repacked when local repo has packs' '
 	rm -f .git/objects/pack/* &&
 	echo new_content >>file1 &&
 	git add file1 &&
 	test_tick &&
 	git commit -m more_content &&
 	git repack &&
 	git repack -a -d &&
 	test_no_missing_in_packs
 '

 test_expect_success 'packed obs in alternate ODB kept pack are repacked' '
 	# swap the .keep so the commit object is in the pack with .keep
 	for p in alt_objects/pack/*.pack
 	do
 		base_name=$(basename $p .pack) &&
 		if test_path_is_file alt_objects/pack/$base_name.keep
 		then
 			rm alt_objects/pack/$base_name.keep
 		else
 			touch alt_objects/pack/$base_name.keep
 		fi || return 1
 	done &&
 	git repack -a -d &&
 	test_no_missing_in_packs
 '

 test_expect_success 'packed unreachable obs in alternate ODB are not loosened' '
 	rm -f alt_objects/pack/*.keep &&
 	mv .git/objects/pack/* alt_objects/pack/ &&
 	coid=$(git rev-parse HEAD^{commit}) &&
 	git reset --hard HEAD^ &&
 	test_tick &&
 	git reflog expire --expire=$test_tick --expire-unreachable=$test_tick --all &&
 	# The pack-objects call on the next line is equivalent to
 	# git repack -A -d without the call to prune-packed
 	git pack-objects --honor-pack-keep --non-empty --all --reflog \
 	    --unpack-unreachable </dev/null pack &&
 	rm -f .git/objects/pack/* &&
 	mv pack-* .git/objects/pack/ &&
 	git verify-pack -v -- .git/objects/pack/*.idx >packlist &&
 	! grep "^$coid " packlist &&
 	echo >.git/objects/info/alternates &&
 	test_must_fail git show $coid
 '

 test_expect_success 'local packed unreachable obs that exist in alternate ODB are not loosened' '
 	echo $(pwd)/alt_objects >.git/objects/info/alternates &&
 	echo "$coid" | git pack-objects --non-empty --all --reflog pack &&
 	rm -f .git/objects/pack/* &&
 	mv pack-* .git/objects/pack/ &&
 	# The pack-objects call on the next line is equivalent to
 	# git repack -A -d without the call to prune-packed
 	git pack-objects --honor-pack-keep --non-empty --all --reflog \
 	    --unpack-unreachable </dev/null pack &&
 	rm -f .git/objects/pack/* &&
 	mv pack-* .git/objects/pack/ &&
 	git verify-pack -v -- .git/objects/pack/*.idx >packlist &&
 	! grep "^$coid " &&
 	echo >.git/objects/info/alternates &&
 	test_must_fail git show $coid
 '

 test_expect_success 'objects made unreachable by grafts only are kept' '
 	test_tick &&
 	git commit --allow-empty -m "commit 4" &&
 	H0=$(git rev-parse HEAD) &&
 	H1=$(git rev-parse HEAD^) &&
 	H2=$(git rev-parse HEAD^^) &&
 	echo "$H0 $H2" >.git/info/grafts &&
 	git reflog expire --expire=$test_tick --expire-unreachable=$test_tick --all &&
 	git repack -a -d &&
 	git cat-file -t $H1
 '

 test_expect_success 'repack --keep-pack' '
 	test_create_repo keep-pack &&
 	(
 		cd keep-pack &&
 		P1=$(commit_and_pack 1) &&
 		P2=$(commit_and_pack 2) &&
 		P3=$(commit_and_pack 3) &&
 		P4=$(commit_and_pack 4) &&
 		ls .git/objects/pack/*.pack >old-counts &&
 		test_line_count = 4 old-counts &&
 		git repack -a -d --keep-pack $P1 --keep-pack $P4 &&
 		ls .git/objects/pack/*.pack >new-counts &&
 		grep -q $P1 new-counts &&
 		grep -q $P4 new-counts &&
 		test_line_count = 3 new-counts &&
 		git fsck
 	)
 '

 test_expect_success 'bitmaps are created by default in bare repos' '
 	git clone --bare .git bare.git &&
 	rm -f bare.git/objects/pack/*.bitmap &&
 	GIT_TEST_MULTI_PACK_INDEX_WRITE_BITMAP=0 \
 		git -C bare.git repack -ad &&
 	bitmap=$(ls bare.git/objects/pack/*.bitmap) &&
 	test_path_is_file "$bitmap"
 '

 test_expect_success 'incremental repack does not complain' '
 	git -C bare.git repack -q 2>repack.err &&
 	test_must_be_empty repack.err
 '

 test_expect_success 'bitmaps can be disabled on bare repos' '
 	GIT_TEST_MULTI_PACK_INDEX_WRITE_BITMAP=0 \
 		git -c repack.writeBitmaps=false -C bare.git repack -ad &&
 	bitmap=$(ls bare.git/objects/pack/*.bitmap || :) &&
 	test -z "$bitmap"
 '

 test_expect_success 'no bitmaps created if .keep files present' '
 	pack=$(ls bare.git/objects/pack/*.pack) &&
 	test_path_is_file "$pack" &&
 	keep=${pack%.pack}.keep &&
 	test_when_finished "rm -f \"\$keep\"" &&
 	>"$keep" &&
 	GIT_TEST_MULTI_PACK_INDEX_WRITE_BITMAP=0 \
 		git -C bare.git repack -ad 2>stderr &&
 	test_must_be_empty stderr &&
 	find bare.git/objects/pack/ -type f -name "*.bitmap" >actual &&
 	test_must_be_empty actual
 '

 test_expect_success 'auto-bitmaps do not complain if unavailable' '
 	test_config -C bare.git pack.packSizeLimit 1M &&
 	blob=$(test-tool genrandom big $((1024*1024)) |
 	       git -C bare.git hash-object -w --stdin) &&
 	git -C bare.git update-ref refs/tags/big $blob &&
 	GIT_TEST_MULTI_PACK_INDEX_WRITE_BITMAP=0 \
 		git -C bare.git repack -ad 2>stderr &&
 	test_must_be_empty stderr &&
 	find bare.git/objects/pack -type f -name "*.bitmap" >actual &&
 	test_must_be_empty actual
 '

 objdir=.git/objects
 midx=$objdir/pack/multi-pack-index

 test_expect_success 'setup for --write-midx tests' '
 	git init midx &&
 	(
 		cd midx &&
 		git config core.multiPackIndex true &&

 		test_commit base
 	)
 '

 test_expect_success '--write-midx unchanged' '
 	(
 		cd midx &&
 		GIT_TEST_MULTI_PACK_INDEX=0 git repack &&
 		test_path_is_missing $midx &&
 		test_path_is_missing $midx-*.bitmap &&

 		GIT_TEST_MULTI_PACK_INDEX=0 git repack --write-midx &&

 		test_path_is_file $midx &&
 		test_path_is_missing $midx-*.bitmap &&
 		test_midx_consistent $objdir
 	)
 '

 test_expect_success '--write-midx with a new pack' '
 	(
 		cd midx &&
 		test_commit loose &&

 		GIT_TEST_MULTI_PACK_INDEX=0 git repack --write-midx &&

 		test_path_is_file $midx &&
 		test_path_is_missing $midx-*.bitmap &&
 		test_midx_consistent $objdir
 	)
 '

 test_expect_success '--write-midx with -b' '
 	(
 		cd midx &&
 		GIT_TEST_MULTI_PACK_INDEX=0 git repack -mb &&

 		test_path_is_file $midx &&
 		test_path_is_file $midx-*.bitmap &&
 		test_midx_consistent $objdir
 	)
 '

 test_expect_success '--write-midx with -d' '
 	(
 		cd midx &&
 		test_commit repack &&

 		GIT_TEST_MULTI_PACK_INDEX=0 git repack -Ad --write-midx &&

 		test_path_is_file $midx &&
 		test_path_is_missing $midx-*.bitmap &&
 		test_midx_consistent $objdir
 	)
 '

 test_expect_success 'cleans up MIDX when appropriate' '
 	(
 		cd midx &&

 		test_commit repack-2 &&
 		GIT_TEST_MULTI_PACK_INDEX=0 git repack -Adb --write-midx &&

 		checksum=$(midx_checksum $objdir) &&
 		test_path_is_file $midx &&
 		test_path_is_file $midx-$checksum.bitmap &&
 		test_path_is_file $midx-$checksum.rev &&

 		test_commit repack-3 &&
 		GIT_TEST_MULTI_PACK_INDEX=0 git repack -Adb --write-midx &&

 		test_path_is_file $midx &&
 		test_path_is_missing $midx-$checksum.bitmap &&
 		test_path_is_missing $midx-$checksum.rev &&
 		test_path_is_file $midx-$(midx_checksum $objdir).bitmap &&
 		test_path_is_file $midx-$(midx_checksum $objdir).rev &&

 		test_commit repack-4 &&
 		GIT_TEST_MULTI_PACK_INDEX=0 git repack -Adb &&

 		find $objdir/pack -type f -name "multi-pack-index*" >files &&
 		test_must_be_empty files
 	)
 '

 test_expect_success '--write-midx with preferred bitmap tips' '
 	git init midx-preferred-tips &&
 	test_when_finished "rm -fr midx-preferred-tips" &&
 	(
 		cd midx-preferred-tips &&

 		test_commit_bulk --message="%s" 103 &&

 		git log --format="%H" >commits.raw &&
 		sort <commits.raw >commits &&

 		git log --format="create refs/tags/%s/%s %H" HEAD >refs &&
 		git update-ref --stdin <refs &&

 		git repack --write-midx --write-bitmap-index &&
 		test_path_is_file $midx &&
 		test_path_is_file $midx-$(midx_checksum $objdir).bitmap &&

 		test-tool bitmap list-commits | sort >bitmaps &&
 		comm -13 bitmaps commits >before &&
 		test_line_count = 1 before &&

 		rm -fr $midx-$(midx_checksum $objdir).bitmap &&
 		rm -fr $midx-$(midx_checksum $objdir).rev &&
 		rm -fr $midx &&

 		# instead of constructing the snapshot ourselves (c.f., the test
 		# "write a bitmap with --refs-snapshot (preferred tips)" in
 		# t5326), mark the missing commit as preferred by adding it to
 		# the pack.preferBitmapTips configuration.
 		git for-each-ref --format="%(refname:rstrip=1)" \
 			--points-at="$(cat before)" >missing &&
 		git config pack.preferBitmapTips "$(cat missing)" &&
 		git repack --write-midx --write-bitmap-index &&

 		test-tool bitmap list-commits | sort >bitmaps &&
 		comm -13 bitmaps commits >after &&

 		! test_cmp before after
 	)
 '

 test_expect_success '--write-midx -b packs non-kept objects' '
 	GIT_TRACE2_EVENT="$(pwd)/trace.txt" \
 		git repack --write-midx -a -b &&
 	test_subcommand_inexact git pack-objects --honor-pack-keep <trace.txt
 '

 test_expect_success TTY '--quiet disables progress' '
 	test_terminal env GIT_PROGRESS_DELAY=0 \
 		git -C midx repack -ad --quiet --write-midx 2>stderr &&
 	test_must_be_empty stderr
 '

 test_done
	#!/bin/sh

	test_description='git repack works correctly'

	. ./test-lib.sh
	. "${TEST_DIRECTORY}/lib-bitmap.sh"
	. "${TEST_DIRECTORY}/lib-midx.sh"
	. "${TEST_DIRECTORY}/lib-terminal.sh"

	commit_and_pack () {
	test_commit "$@" 1>&2 &&
	incrpackid=$(git pack-objects --all --unpacked --incremental .git/objects/pack/pack </dev/null) &&
	echo pack-${incrpackid}.pack
	}

	test_no_missing_in_packs () {
	myidx=$(ls -1 .git/objects/pack/*.idx) &&
	test_path_is_file "$myidx" &&
	git verify-pack -v alt_objects/pack/*.idx >orig.raw &&
	sed -n -e "s/^\($OID_REGEX\).*/\1/p" orig.raw \| sort >orig &&
	git verify-pack -v $myidx >dest.raw &&
	cut -d" " -f1 dest.raw \| sort >dest &&
	comm -23 orig dest >missing &&
	test_must_be_empty missing
	}

	# we expect $packid and $oid to be defined
	test_has_duplicate_object () {
	want_duplicate_object="$1"
	found_duplicate_object=false
	for p in .git/objects/pack/*.idx
	do
	idx=$(basename $p)
	test "pack-$packid.idx" = "$idx" && continue
	git verify-pack -v $p >packlist \|\| return $?
	if grep "^$oid" packlist
	then
	found_duplicate_object=true
	echo "DUPLICATE OBJECT FOUND"
	break
	fi
	done &&
	test "$want_duplicate_object" = "$found_duplicate_object"
	}

	test_expect_success 'objects in packs marked .keep are not repacked' '
	echo content1 >file1 &&
	echo content2 >file2 &&
	git add . &&
	test_tick &&
	git commit -m initial_commit &&
	# Create two packs
	# The first pack will contain all of the objects except one
	git rev-list --objects --all >objs &&
	grep -v file2 objs \| git pack-objects pack &&
	# The second pack will contain the excluded object
	packid=$(grep file2 objs \| git pack-objects pack) &&
	>pack-$packid.keep &&
	git verify-pack -v pack-$packid.idx >packlist &&
	oid=$(head -n 1 packlist \| sed -e "s/^\($OID_REGEX\).*/\1/") &&
	mv pack-* .git/objects/pack/ &&
	git repack -A -d -l &&
	git prune-packed &&
	test_has_duplicate_object false
	'

	test_expect_success 'writing bitmaps via command-line can duplicate .keep objects' '
	# build on $oid, $packid, and .keep state from previous
	GIT_TEST_MULTI_PACK_INDEX_WRITE_BITMAP=0 git repack -Adbl &&
	test_has_duplicate_object true
	'

	test_expect_success 'writing bitmaps via config can duplicate .keep objects' '
	# build on $oid, $packid, and .keep state from previous
	GIT_TEST_MULTI_PACK_INDEX_WRITE_BITMAP=0 \
	git -c repack.writebitmaps=true repack -Adl &&
	test_has_duplicate_object true
	'

	test_expect_success 'loose objects in alternate ODB are not repacked' '
	mkdir alt_objects &&
	echo $(pwd)/alt_objects >.git/objects/info/alternates &&
	echo content3 >file3 &&
	oid=$(GIT_OBJECT_DIRECTORY=alt_objects git hash-object -w file3) &&
	git add file3 &&
	test_tick &&
	git commit -m commit_file3 &&
	git repack -a -d -l &&
	git prune-packed &&
	test_has_duplicate_object false
	'

	test_expect_success 'packed obs in alt ODB are repacked even when local repo is packless' '
	mkdir alt_objects/pack &&
	mv .git/objects/pack/* alt_objects/pack &&
	git repack -a &&
	test_no_missing_in_packs
	'

	test_expect_success 'packed obs in alt ODB are repacked when local repo has packs' '
	rm -f .git/objects/pack/* &&
	echo new_content >>file1 &&
	git add file1 &&
	test_tick &&
	git commit -m more_content &&
	git repack &&
	git repack -a -d &&
	test_no_missing_in_packs
	'

	test_expect_success 'packed obs in alternate ODB kept pack are repacked' '
	# swap the .keep so the commit object is in the pack with .keep
	for p in alt_objects/pack/*.pack
	do
	base_name=$(basename $p .pack) &&
	if test_path_is_file alt_objects/pack/$base_name.keep
	then
	rm alt_objects/pack/$base_name.keep
	else
	touch alt_objects/pack/$base_name.keep
	fi \|\| return 1
	done &&
	git repack -a -d &&
	test_no_missing_in_packs
	'

	test_expect_success 'packed unreachable obs in alternate ODB are not loosened' '
	rm -f alt_objects/pack/*.keep &&
	mv .git/objects/pack/* alt_objects/pack/ &&
	coid=$(git rev-parse HEAD^{commit}) &&
	git reset --hard HEAD^ &&
	test_tick &&
	git reflog expire --expire=$test_tick --expire-unreachable=$test_tick --all &&
	# The pack-objects call on the next line is equivalent to
	# git repack -A -d without the call to prune-packed
	git pack-objects --honor-pack-keep --non-empty --all --reflog \
	--unpack-unreachable </dev/null pack &&
	rm -f .git/objects/pack/* &&
	mv pack-* .git/objects/pack/ &&
	git verify-pack -v -- .git/objects/pack/*.idx >packlist &&
	! grep "^$coid " packlist &&
	echo >.git/objects/info/alternates &&
	test_must_fail git show $coid
	'

	test_expect_success 'local packed unreachable obs that exist in alternate ODB are not loosened' '
	echo $(pwd)/alt_objects >.git/objects/info/alternates &&
	echo "$coid" \| git pack-objects --non-empty --all --reflog pack &&
	rm -f .git/objects/pack/* &&
	mv pack-* .git/objects/pack/ &&
	# The pack-objects call on the next line is equivalent to
	# git repack -A -d without the call to prune-packed
	git pack-objects --honor-pack-keep --non-empty --all --reflog \
	--unpack-unreachable </dev/null pack &&
	rm -f .git/objects/pack/* &&
	mv pack-* .git/objects/pack/ &&
	git verify-pack -v -- .git/objects/pack/*.idx >packlist &&
	! grep "^$coid " &&
	echo >.git/objects/info/alternates &&
	test_must_fail git show $coid
	'

	test_expect_success 'objects made unreachable by grafts only are kept' '
	test_tick &&
	git commit --allow-empty -m "commit 4" &&
	H0=$(git rev-parse HEAD) &&
	H1=$(git rev-parse HEAD^) &&
	H2=$(git rev-parse HEAD^^) &&
	echo "$H0 $H2" >.git/info/grafts &&
	git reflog expire --expire=$test_tick --expire-unreachable=$test_tick --all &&
	git repack -a -d &&
	git cat-file -t $H1
	'

	test_expect_success 'repack --keep-pack' '
	test_create_repo keep-pack &&
	(
	cd keep-pack &&
	P1=$(commit_and_pack 1) &&
	P2=$(commit_and_pack 2) &&
	P3=$(commit_and_pack 3) &&
	P4=$(commit_and_pack 4) &&
	ls .git/objects/pack/*.pack >old-counts &&
	test_line_count = 4 old-counts &&
	git repack -a -d --keep-pack $P1 --keep-pack $P4 &&
	ls .git/objects/pack/*.pack >new-counts &&
	grep -q $P1 new-counts &&
	grep -q $P4 new-counts &&
	test_line_count = 3 new-counts &&
	git fsck
	)
	'

	test_expect_success 'bitmaps are created by default in bare repos' '
	git clone --bare .git bare.git &&
	rm -f bare.git/objects/pack/*.bitmap &&
	GIT_TEST_MULTI_PACK_INDEX_WRITE_BITMAP=0 \
	git -C bare.git repack -ad &&
	bitmap=$(ls bare.git/objects/pack/*.bitmap) &&
	test_path_is_file "$bitmap"
	'

	test_expect_success 'incremental repack does not complain' '
	git -C bare.git repack -q 2>repack.err &&
	test_must_be_empty repack.err
	'

	test_expect_success 'bitmaps can be disabled on bare repos' '
	GIT_TEST_MULTI_PACK_INDEX_WRITE_BITMAP=0 \
	git -c repack.writeBitmaps=false -C bare.git repack -ad &&
	bitmap=$(ls bare.git/objects/pack/*.bitmap \|\| :) &&
	test -z "$bitmap"
	'

	test_expect_success 'no bitmaps created if .keep files present' '
	pack=$(ls bare.git/objects/pack/*.pack) &&
	test_path_is_file "$pack" &&
	keep=${pack%.pack}.keep &&
	test_when_finished "rm -f \"\$keep\"" &&
	>"$keep" &&
	GIT_TEST_MULTI_PACK_INDEX_WRITE_BITMAP=0 \
	git -C bare.git repack -ad 2>stderr &&
	test_must_be_empty stderr &&
	find bare.git/objects/pack/ -type f -name "*.bitmap" >actual &&
	test_must_be_empty actual
	'

	test_expect_success 'auto-bitmaps do not complain if unavailable' '
	test_config -C bare.git pack.packSizeLimit 1M &&
	blob=$(test-tool genrandom big $((1024*1024)) \|
	git -C bare.git hash-object -w --stdin) &&
	git -C bare.git update-ref refs/tags/big $blob &&
	GIT_TEST_MULTI_PACK_INDEX_WRITE_BITMAP=0 \
	git -C bare.git repack -ad 2>stderr &&
	test_must_be_empty stderr &&
	find bare.git/objects/pack -type f -name "*.bitmap" >actual &&
	test_must_be_empty actual
	'

	objdir=.git/objects
	midx=$objdir/pack/multi-pack-index

	test_expect_success 'setup for --write-midx tests' '
	git init midx &&
	(
	cd midx &&
	git config core.multiPackIndex true &&

	test_commit base
	)
	'

	test_expect_success '--write-midx unchanged' '
	(
	cd midx &&
	GIT_TEST_MULTI_PACK_INDEX=0 git repack &&
	test_path_is_missing $midx &&
	test_path_is_missing $midx-*.bitmap &&

	GIT_TEST_MULTI_PACK_INDEX=0 git repack --write-midx &&

	test_path_is_file $midx &&
	test_path_is_missing $midx-*.bitmap &&
	test_midx_consistent $objdir
	)
	'

	test_expect_success '--write-midx with a new pack' '
	(
	cd midx &&
	test_commit loose &&

	GIT_TEST_MULTI_PACK_INDEX=0 git repack --write-midx &&

	test_path_is_file $midx &&
	test_path_is_missing $midx-*.bitmap &&
	test_midx_consistent $objdir
	)
	'

	test_expect_success '--write-midx with -b' '
	(
	cd midx &&
	GIT_TEST_MULTI_PACK_INDEX=0 git repack -mb &&

	test_path_is_file $midx &&
	test_path_is_file $midx-*.bitmap &&
	test_midx_consistent $objdir
	)
	'

	test_expect_success '--write-midx with -d' '
	(
	cd midx &&
	test_commit repack &&

	GIT_TEST_MULTI_PACK_INDEX=0 git repack -Ad --write-midx &&

	test_path_is_file $midx &&
	test_path_is_missing $midx-*.bitmap &&
	test_midx_consistent $objdir
	)
	'

	test_expect_success 'cleans up MIDX when appropriate' '
	(
	cd midx &&

	test_commit repack-2 &&
	GIT_TEST_MULTI_PACK_INDEX=0 git repack -Adb --write-midx &&

	checksum=$(midx_checksum $objdir) &&
	test_path_is_file $midx &&
	test_path_is_file $midx-$checksum.bitmap &&
	test_path_is_file $midx-$checksum.rev &&

	test_commit repack-3 &&
	GIT_TEST_MULTI_PACK_INDEX=0 git repack -Adb --write-midx &&

	test_path_is_file $midx &&
	test_path_is_missing $midx-$checksum.bitmap &&
	test_path_is_missing $midx-$checksum.rev &&
	test_path_is_file $midx-$(midx_checksum $objdir).bitmap &&
	test_path_is_file $midx-$(midx_checksum $objdir).rev &&

	test_commit repack-4 &&
	GIT_TEST_MULTI_PACK_INDEX=0 git repack -Adb &&

	find $objdir/pack -type f -name "multi-pack-index*" >files &&
	test_must_be_empty files
	)
	'

	test_expect_success '--write-midx with preferred bitmap tips' '
	git init midx-preferred-tips &&
	test_when_finished "rm -fr midx-preferred-tips" &&
	(
	cd midx-preferred-tips &&

	test_commit_bulk --message="%s" 103 &&

	git log --format="%H" >commits.raw &&
	sort <commits.raw >commits &&

	git log --format="create refs/tags/%s/%s %H" HEAD >refs &&
	git update-ref --stdin <refs &&

	git repack --write-midx --write-bitmap-index &&
	test_path_is_file $midx &&
	test_path_is_file $midx-$(midx_checksum $objdir).bitmap &&

	test-tool bitmap list-commits \| sort >bitmaps &&
	comm -13 bitmaps commits >before &&
	test_line_count = 1 before &&

	rm -fr $midx-$(midx_checksum $objdir).bitmap &&
	rm -fr $midx-$(midx_checksum $objdir).rev &&
	rm -fr $midx &&

	# instead of constructing the snapshot ourselves (c.f., the test
	# "write a bitmap with --refs-snapshot (preferred tips)" in
	# t5326), mark the missing commit as preferred by adding it to
	# the pack.preferBitmapTips configuration.
	git for-each-ref --format="%(refname:rstrip=1)" \
	--points-at="$(cat before)" >missing &&
	git config pack.preferBitmapTips "$(cat missing)" &&
	git repack --write-midx --write-bitmap-index &&

	test-tool bitmap list-commits \| sort >bitmaps &&
	comm -13 bitmaps commits >after &&

	! test_cmp before after
	)
	'

	test_expect_success '--write-midx -b packs non-kept objects' '
	GIT_TRACE2_EVENT="$(pwd)/trace.txt" \
	git repack --write-midx -a -b &&
	test_subcommand_inexact git pack-objects --honor-pack-keep <trace.txt
	'

	test_expect_success TTY '--quiet disables progress' '
	test_terminal env GIT_PROGRESS_DELAY=0 \
	git -C midx repack -ad --quiet --write-midx 2>stderr &&
	test_must_be_empty stderr
	'

	test_done