t/t5300-pack-object.sh - git - Git at Google

 #!/bin/sh
 #
 # Copyright (c) 2005 Junio C Hamano
 #

 test_description='git pack-object

 '
 . ./test-lib.sh

 TRASH=$(pwd)

 test_expect_success \
     'setup' \
     'rm -f .git/index* &&
      perl -e "print \"a\" x 4096;" > a &&
      perl -e "print \"b\" x 4096;" > b &&
      perl -e "print \"c\" x 4096;" > c &&
      test-tool genrandom "seed a" 2097152 > a_big &&
      test-tool genrandom "seed b" 2097152 > b_big &&
      git update-index --add a a_big b b_big c &&
      cat c >d && echo foo >>d && git update-index --add d &&
      tree=$(git write-tree) &&
      commit=$(git commit-tree $tree </dev/null) && {
 	 echo $tree &&
 	 echo $commit &&
 	 git ls-tree $tree | sed -e "s/.* \\([0-9a-f]*\\)	.*/\\1/"
      } >obj-list && {
 	 git diff-tree --root -p $commit &&
 	 while read object
 	 do
 	    t=$(git cat-file -t $object) &&
 	    git cat-file $t $object || return 1
 	 done <obj-list
      } >expect'

 test_expect_success \
     'pack without delta' \
     'packname_1=$(git pack-objects --window=0 test-1 <obj-list)'

 test_expect_success \
     'pack-objects with bogus arguments' \
     'test_must_fail git pack-objects --window=0 test-1 blah blah <obj-list'

 rm -fr .git2
 mkdir .git2

 test_expect_success \
     'unpack without delta' \
     "GIT_OBJECT_DIRECTORY=.git2/objects &&
      export GIT_OBJECT_DIRECTORY &&
      git init &&
      git unpack-objects -n <test-1-${packname_1}.pack &&
      git unpack-objects <test-1-${packname_1}.pack"

 unset GIT_OBJECT_DIRECTORY
 cd "$TRASH/.git2"

 test_expect_success \
     'check unpack without delta' \
     '(cd ../.git && find objects -type f -print) |
      while read path
      do
          cmp $path ../.git/$path || {
 	     echo $path differs.
 	     return 1
 	 }
      done'
 cd "$TRASH"

 test_expect_success \
     'pack with REF_DELTA' \
     'pwd &&
      packname_2=$(git pack-objects test-2 <obj-list)'

 rm -fr .git2
 mkdir .git2

 test_expect_success \
     'unpack with REF_DELTA' \
     'GIT_OBJECT_DIRECTORY=.git2/objects &&
      export GIT_OBJECT_DIRECTORY &&
      git init &&
      git unpack-objects -n <test-2-${packname_2}.pack &&
      git unpack-objects <test-2-${packname_2}.pack'

 unset GIT_OBJECT_DIRECTORY
 cd "$TRASH/.git2"
 test_expect_success \
     'check unpack with REF_DELTA' \
     '(cd ../.git && find objects -type f -print) |
      while read path
      do
          cmp $path ../.git/$path || {
 	     echo $path differs.
 	     return 1
 	 }
      done'
 cd "$TRASH"

 test_expect_success \
     'pack with OFS_DELTA' \
     'pwd &&
      packname_3=$(git pack-objects --delta-base-offset test-3 <obj-list)'

 rm -fr .git2
 mkdir .git2

 test_expect_success \
     'unpack with OFS_DELTA' \
     'GIT_OBJECT_DIRECTORY=.git2/objects &&
      export GIT_OBJECT_DIRECTORY &&
      git init &&
      git unpack-objects -n <test-3-${packname_3}.pack &&
      git unpack-objects <test-3-${packname_3}.pack'

 unset GIT_OBJECT_DIRECTORY
 cd "$TRASH/.git2"
 test_expect_success \
     'check unpack with OFS_DELTA' \
     '(cd ../.git && find objects -type f -print) |
      while read path
      do
          cmp $path ../.git/$path || {
 	     echo $path differs.
 	     return 1
 	 }
      done'
 cd "$TRASH"

 test_expect_success 'compare delta flavors' '
 	perl -e '\''
 		defined($_ = -s $_) or die for @ARGV;
 		exit 1 if $ARGV[0] <= $ARGV[1];
 	'\'' test-2-$packname_2.pack test-3-$packname_3.pack
 '

 rm -fr .git2
 mkdir .git2

 test_expect_success \
     'use packed objects' \
     'GIT_OBJECT_DIRECTORY=.git2/objects &&
      export GIT_OBJECT_DIRECTORY &&
      git init &&
      cp test-1-${packname_1}.pack test-1-${packname_1}.idx .git2/objects/pack && {
 	 git diff-tree --root -p $commit &&
 	 while read object
 	 do
 	    t=$(git cat-file -t $object) &&
 	    git cat-file $t $object || return 1
 	 done <obj-list
     } >current &&
     cmp expect current'

 test_expect_success \
     'use packed deltified (REF_DELTA) objects' \
     'GIT_OBJECT_DIRECTORY=.git2/objects &&
      export GIT_OBJECT_DIRECTORY &&
      rm -f .git2/objects/pack/test-* &&
      cp test-2-${packname_2}.pack test-2-${packname_2}.idx .git2/objects/pack && {
 	 git diff-tree --root -p $commit &&
 	 while read object
 	 do
 	    t=$(git cat-file -t $object) &&
 	    git cat-file $t $object || return 1
 	 done <obj-list
     } >current &&
     cmp expect current'

 test_expect_success \
     'use packed deltified (OFS_DELTA) objects' \
     'GIT_OBJECT_DIRECTORY=.git2/objects &&
      export GIT_OBJECT_DIRECTORY &&
      rm -f .git2/objects/pack/test-* &&
      cp test-3-${packname_3}.pack test-3-${packname_3}.idx .git2/objects/pack && {
 	 git diff-tree --root -p $commit &&
 	 while read object
 	 do
 	    t=$(git cat-file -t $object) &&
 	    git cat-file $t $object || return 1
 	 done <obj-list
     } >current &&
     cmp expect current'

 unset GIT_OBJECT_DIRECTORY

 test_expect_success 'survive missing objects/pack directory' '
 	(
 		rm -fr missing-pack &&
 		mkdir missing-pack &&
 		cd missing-pack &&
 		git init &&
 		GOP=.git/objects/pack &&
 		rm -fr $GOP &&
 		git index-pack --stdin --keep=test <../test-3-${packname_3}.pack &&
 		test -f $GOP/pack-${packname_3}.pack &&
 		cmp $GOP/pack-${packname_3}.pack ../test-3-${packname_3}.pack &&
 		test -f $GOP/pack-${packname_3}.idx &&
 		cmp $GOP/pack-${packname_3}.idx ../test-3-${packname_3}.idx &&
 		test -f $GOP/pack-${packname_3}.keep
 	)
 '

 test_expect_success \
     'verify pack' \
     'git verify-pack	test-1-${packname_1}.idx \
 			test-2-${packname_2}.idx \
 			test-3-${packname_3}.idx'

 test_expect_success \
     'verify pack -v' \
     'git verify-pack -v	test-1-${packname_1}.idx \
 			test-2-${packname_2}.idx \
 			test-3-${packname_3}.idx'

 test_expect_success \
     'verify-pack catches mismatched .idx and .pack files' \
     'cat test-1-${packname_1}.idx >test-3.idx &&
      cat test-2-${packname_2}.pack >test-3.pack &&
      if git verify-pack test-3.idx
      then false
      else :;
      fi'

 test_expect_success \
     'verify-pack catches a corrupted pack signature' \
     'cat test-1-${packname_1}.pack >test-3.pack &&
      echo | dd of=test-3.pack count=1 bs=1 conv=notrunc seek=2 &&
      if git verify-pack test-3.idx
      then false
      else :;
      fi'

 test_expect_success \
     'verify-pack catches a corrupted pack version' \
     'cat test-1-${packname_1}.pack >test-3.pack &&
      echo | dd of=test-3.pack count=1 bs=1 conv=notrunc seek=7 &&
      if git verify-pack test-3.idx
      then false
      else :;
      fi'

 test_expect_success \
     'verify-pack catches a corrupted type/size of the 1st packed object data' \
     'cat test-1-${packname_1}.pack >test-3.pack &&
      echo | dd of=test-3.pack count=1 bs=1 conv=notrunc seek=12 &&
      if git verify-pack test-3.idx
      then false
      else :;
      fi'

 test_expect_success \
     'verify-pack catches a corrupted sum of the index file itself' \
     'l=$(wc -c <test-3.idx) &&
      l=$(expr $l - 20) &&
      cat test-1-${packname_1}.pack >test-3.pack &&
      printf "%20s" "" | dd of=test-3.idx count=20 bs=1 conv=notrunc seek=$l &&
      if git verify-pack test-3.pack
      then false
      else :;
      fi'

 test_expect_success \
     'build pack index for an existing pack' \
     'cat test-1-${packname_1}.pack >test-3.pack &&
      git index-pack -o tmp.idx test-3.pack &&
      cmp tmp.idx test-1-${packname_1}.idx &&

      git index-pack test-3.pack &&
      cmp test-3.idx test-1-${packname_1}.idx &&

      cat test-2-${packname_2}.pack >test-3.pack &&
      git index-pack -o tmp.idx test-2-${packname_2}.pack &&
      cmp tmp.idx test-2-${packname_2}.idx &&

      git index-pack test-3.pack &&
      cmp test-3.idx test-2-${packname_2}.idx &&

      cat test-3-${packname_3}.pack >test-3.pack &&
      git index-pack -o tmp.idx test-3-${packname_3}.pack &&
      cmp tmp.idx test-3-${packname_3}.idx &&

      git index-pack test-3.pack &&
      cmp test-3.idx test-3-${packname_3}.idx &&

      cat test-1-${packname_1}.pack >test-4.pack &&
      rm -f test-4.keep &&
      git index-pack --keep=why test-4.pack &&
      cmp test-1-${packname_1}.idx test-4.idx &&
      test -f test-4.keep &&

      :'

 test_expect_success 'unpacking with --strict' '

 	for j in a b c d e f g
 	do
 		for i in 0 1 2 3 4 5 6 7 8 9
 		do
 			o=$(echo $j$i | git hash-object -w --stdin) &&
 			echo "100644 $o	0 $j$i"
 		done
 	done >LIST &&
 	rm -f .git/index &&
 	git update-index --index-info <LIST &&
 	LIST=$(git write-tree) &&
 	rm -f .git/index &&
 	head -n 10 LIST | git update-index --index-info &&
 	LI=$(git write-tree) &&
 	rm -f .git/index &&
 	tail -n 10 LIST | git update-index --index-info &&
 	ST=$(git write-tree) &&
 	git rev-list --objects "$LIST" "$LI" "$ST" >actual &&
 	PACK5=$( git pack-objects test-5 <actual ) &&
 	PACK6=$( (
 			echo "$LIST"
 			echo "$LI"
 			echo "$ST"
 		 ) | git pack-objects test-6 ) &&
 	test_create_repo test-5 &&
 	(
 		cd test-5 &&
 		git unpack-objects --strict <../test-5-$PACK5.pack &&
 		git ls-tree -r $LIST &&
 		git ls-tree -r $LI &&
 		git ls-tree -r $ST
 	) &&
 	test_create_repo test-6 &&
 	(
 		# tree-only into empty repo -- many unreachables
 		cd test-6 &&
 		test_must_fail git unpack-objects --strict <../test-6-$PACK6.pack
 	) &&
 	(
 		# already populated -- no unreachables
 		cd test-5 &&
 		git unpack-objects --strict <../test-6-$PACK6.pack
 	)
 '

 test_expect_success 'index-pack with --strict' '

 	for j in a b c d e f g
 	do
 		for i in 0 1 2 3 4 5 6 7 8 9
 		do
 			o=$(echo $j$i | git hash-object -w --stdin) &&
 			echo "100644 $o	0 $j$i"
 		done
 	done >LIST &&
 	rm -f .git/index &&
 	git update-index --index-info <LIST &&
 	LIST=$(git write-tree) &&
 	rm -f .git/index &&
 	head -n 10 LIST | git update-index --index-info &&
 	LI=$(git write-tree) &&
 	rm -f .git/index &&
 	tail -n 10 LIST | git update-index --index-info &&
 	ST=$(git write-tree) &&
 	git rev-list --objects "$LIST" "$LI" "$ST" >actual &&
 	PACK5=$( git pack-objects test-5 <actual ) &&
 	PACK6=$( (
 			echo "$LIST"
 			echo "$LI"
 			echo "$ST"
 		 ) | git pack-objects test-6 ) &&
 	test_create_repo test-7 &&
 	(
 		cd test-7 &&
 		git index-pack --strict --stdin <../test-5-$PACK5.pack &&
 		git ls-tree -r $LIST &&
 		git ls-tree -r $LI &&
 		git ls-tree -r $ST
 	) &&
 	test_create_repo test-8 &&
 	(
 		# tree-only into empty repo -- many unreachables
 		cd test-8 &&
 		test_must_fail git index-pack --strict --stdin <../test-6-$PACK6.pack
 	) &&
 	(
 		# already populated -- no unreachables
 		cd test-7 &&
 		git index-pack --strict --stdin <../test-6-$PACK6.pack
 	)
 '

 test_expect_success 'honor pack.packSizeLimit' '
 	git config pack.packSizeLimit 3m &&
 	packname_10=$(git pack-objects test-10 <obj-list) &&
 	test 2 = $(ls test-10-*.pack | wc -l)
 '

 test_expect_success 'verify resulting packs' '
 	git verify-pack test-10-*.pack
 '

 test_expect_success 'tolerate packsizelimit smaller than biggest object' '
 	git config pack.packSizeLimit 1 &&
 	packname_11=$(git pack-objects test-11 <obj-list) &&
 	test 5 = $(ls test-11-*.pack | wc -l)
 '

 test_expect_success 'verify resulting packs' '
 	git verify-pack test-11-*.pack
 '

 test_expect_success 'set up pack for non-repo tests' '
 	# make sure we have a pack with no matching index file
 	cp test-1-*.pack foo.pack
 '

 test_expect_success 'index-pack --stdin complains of non-repo' '
 	nongit test_must_fail git index-pack --stdin <foo.pack &&
 	test_path_is_missing non-repo/.git
 '

 test_expect_success 'index-pack <pack> works in non-repo' '
 	nongit git index-pack ../foo.pack &&
 	test_path_is_file foo.idx
 '

 test_expect_success 'index-pack --strict <pack> works in non-repo' '
 	rm -f foo.idx &&
 	nongit git index-pack --strict ../foo.pack &&
 	test_path_is_file foo.idx
 '

 test_expect_success !PTHREADS,C_LOCALE_OUTPUT 'index-pack --threads=N or pack.threads=N warns when no pthreads' '
 	test_must_fail git index-pack --threads=2 2>err &&
 	grep ^warning: err >warnings &&
 	test_line_count = 1 warnings &&
 	grep -F "no threads support, ignoring --threads=2" err &&

 	test_must_fail git -c pack.threads=2 index-pack 2>err &&
 	grep ^warning: err >warnings &&
 	test_line_count = 1 warnings &&
 	grep -F "no threads support, ignoring pack.threads" err &&

 	test_must_fail git -c pack.threads=2 index-pack --threads=4 2>err &&
 	grep ^warning: err >warnings &&
 	test_line_count = 2 warnings &&
 	grep -F "no threads support, ignoring --threads=4" err &&
 	grep -F "no threads support, ignoring pack.threads" err
 '

 test_expect_success !PTHREADS,C_LOCALE_OUTPUT 'pack-objects --threads=N or pack.threads=N warns when no pthreads' '
 	git pack-objects --threads=2 --stdout --all </dev/null >/dev/null 2>err &&
 	grep ^warning: err >warnings &&
 	test_line_count = 1 warnings &&
 	grep -F "no threads support, ignoring --threads" err &&

 	git -c pack.threads=2 pack-objects --stdout --all </dev/null >/dev/null 2>err &&
 	grep ^warning: err >warnings &&
 	test_line_count = 1 warnings &&
 	grep -F "no threads support, ignoring pack.threads" err &&

 	git -c pack.threads=2 pack-objects --threads=4 --stdout --all </dev/null >/dev/null 2>err &&
 	grep ^warning: err >warnings &&
 	test_line_count = 2 warnings &&
 	grep -F "no threads support, ignoring --threads" err &&
 	grep -F "no threads support, ignoring pack.threads" err
 '

 test_expect_success 'pack-objects in too-many-packs mode' '
 	GIT_TEST_FULL_IN_PACK_ARRAY=1 git repack -ad &&
 	git fsck
 '

 test_expect_success 'setup: fake a SHA1 hash collision' '
 	git init corrupt &&
 	(
 		cd corrupt &&
 		long_a=$(git hash-object -w ../a | sed -e "s!^..!&/!") &&
 		long_b=$(git hash-object -w ../b | sed -e "s!^..!&/!") &&
 		test -f	.git/objects/$long_b &&
 		cp -f	.git/objects/$long_a \
 			.git/objects/$long_b
 	)
 '

 test_expect_success 'make sure index-pack detects the SHA1 collision' '
 	(
 		cd corrupt &&
 		test_must_fail git index-pack -o ../bad.idx ../test-3.pack 2>msg &&
 		test_i18ngrep "SHA1 COLLISION FOUND" msg
 	)
 '

 test_expect_success 'make sure index-pack detects the SHA1 collision (large blobs)' '
 	(
 		cd corrupt &&
 		test_must_fail git -c core.bigfilethreshold=1 index-pack -o ../bad.idx ../test-3.pack 2>msg &&
 		test_i18ngrep "SHA1 COLLISION FOUND" msg
 	)
 '

 test_done
	#!/bin/sh
	#
	# Copyright (c) 2005 Junio C Hamano
	#

	test_description='git pack-object

	'
	. ./test-lib.sh

	TRASH=$(pwd)

	test_expect_success \
	'setup' \
	'rm -f .git/index* &&
	perl -e "print \"a\" x 4096;" > a &&
	perl -e "print \"b\" x 4096;" > b &&
	perl -e "print \"c\" x 4096;" > c &&
	test-tool genrandom "seed a" 2097152 > a_big &&
	test-tool genrandom "seed b" 2097152 > b_big &&
	git update-index --add a a_big b b_big c &&
	cat c >d && echo foo >>d && git update-index --add d &&
	tree=$(git write-tree) &&
	commit=$(git commit-tree $tree </dev/null) && {
	echo $tree &&
	echo $commit &&
	git ls-tree $tree \| sed -e "s/.* \\([0-9a-f]\\) ./\\1/"
	} >obj-list && {
	git diff-tree --root -p $commit &&
	while read object
	do
	t=$(git cat-file -t $object) &&
	git cat-file $t $object \|\| return 1
	done <obj-list
	} >expect'

	test_expect_success \
	'pack without delta' \
	'packname_1=$(git pack-objects --window=0 test-1 <obj-list)'

	test_expect_success \
	'pack-objects with bogus arguments' \
	'test_must_fail git pack-objects --window=0 test-1 blah blah <obj-list'

	rm -fr .git2
	mkdir .git2

	test_expect_success \
	'unpack without delta' \
	"GIT_OBJECT_DIRECTORY=.git2/objects &&
	export GIT_OBJECT_DIRECTORY &&
	git init &&
	git unpack-objects -n <test-1-${packname_1}.pack &&
	git unpack-objects <test-1-${packname_1}.pack"

	unset GIT_OBJECT_DIRECTORY
	cd "$TRASH/.git2"

	test_expect_success \
	'check unpack without delta' \
	'(cd ../.git && find objects -type f -print) \|
	while read path
	do
	cmp $path ../.git/$path \|\| {
	echo $path differs.
	return 1
	}
	done'
	cd "$TRASH"

	test_expect_success \
	'pack with REF_DELTA' \
	'pwd &&
	packname_2=$(git pack-objects test-2 <obj-list)'

	rm -fr .git2
	mkdir .git2

	test_expect_success \
	'unpack with REF_DELTA' \
	'GIT_OBJECT_DIRECTORY=.git2/objects &&
	export GIT_OBJECT_DIRECTORY &&
	git init &&
	git unpack-objects -n <test-2-${packname_2}.pack &&
	git unpack-objects <test-2-${packname_2}.pack'

	unset GIT_OBJECT_DIRECTORY
	cd "$TRASH/.git2"
	test_expect_success \
	'check unpack with REF_DELTA' \
	'(cd ../.git && find objects -type f -print) \|
	while read path
	do
	cmp $path ../.git/$path \|\| {
	echo $path differs.
	return 1
	}
	done'
	cd "$TRASH"

	test_expect_success \
	'pack with OFS_DELTA' \
	'pwd &&
	packname_3=$(git pack-objects --delta-base-offset test-3 <obj-list)'

	rm -fr .git2
	mkdir .git2

	test_expect_success \
	'unpack with OFS_DELTA' \
	'GIT_OBJECT_DIRECTORY=.git2/objects &&
	export GIT_OBJECT_DIRECTORY &&
	git init &&
	git unpack-objects -n <test-3-${packname_3}.pack &&
	git unpack-objects <test-3-${packname_3}.pack'

	unset GIT_OBJECT_DIRECTORY
	cd "$TRASH/.git2"
	test_expect_success \
	'check unpack with OFS_DELTA' \
	'(cd ../.git && find objects -type f -print) \|
	while read path
	do
	cmp $path ../.git/$path \|\| {
	echo $path differs.
	return 1
	}
	done'
	cd "$TRASH"

	test_expect_success 'compare delta flavors' '
	perl -e '\''
	defined($_ = -s $_) or die for @ARGV;
	exit 1 if $ARGV[0] <= $ARGV[1];
	'\'' test-2-$packname_2.pack test-3-$packname_3.pack
	'

	rm -fr .git2
	mkdir .git2

	test_expect_success \
	'use packed objects' \
	'GIT_OBJECT_DIRECTORY=.git2/objects &&
	export GIT_OBJECT_DIRECTORY &&
	git init &&
	cp test-1-${packname_1}.pack test-1-${packname_1}.idx .git2/objects/pack && {
	git diff-tree --root -p $commit &&
	while read object
	do
	t=$(git cat-file -t $object) &&
	git cat-file $t $object \|\| return 1
	done <obj-list
	} >current &&
	cmp expect current'

	test_expect_success \
	'use packed deltified (REF_DELTA) objects' \
	'GIT_OBJECT_DIRECTORY=.git2/objects &&
	export GIT_OBJECT_DIRECTORY &&
	rm -f .git2/objects/pack/test-* &&
	cp test-2-${packname_2}.pack test-2-${packname_2}.idx .git2/objects/pack && {
	git diff-tree --root -p $commit &&
	while read object
	do
	t=$(git cat-file -t $object) &&
	git cat-file $t $object \|\| return 1
	done <obj-list
	} >current &&
	cmp expect current'

	test_expect_success \
	'use packed deltified (OFS_DELTA) objects' \
	'GIT_OBJECT_DIRECTORY=.git2/objects &&
	export GIT_OBJECT_DIRECTORY &&
	rm -f .git2/objects/pack/test-* &&
	cp test-3-${packname_3}.pack test-3-${packname_3}.idx .git2/objects/pack && {
	git diff-tree --root -p $commit &&
	while read object
	do
	t=$(git cat-file -t $object) &&
	git cat-file $t $object \|\| return 1
	done <obj-list
	} >current &&
	cmp expect current'

	unset GIT_OBJECT_DIRECTORY

	test_expect_success 'survive missing objects/pack directory' '
	(
	rm -fr missing-pack &&
	mkdir missing-pack &&
	cd missing-pack &&
	git init &&
	GOP=.git/objects/pack &&
	rm -fr $GOP &&
	git index-pack --stdin --keep=test <../test-3-${packname_3}.pack &&
	test -f $GOP/pack-${packname_3}.pack &&
	cmp $GOP/pack-${packname_3}.pack ../test-3-${packname_3}.pack &&
	test -f $GOP/pack-${packname_3}.idx &&
	cmp $GOP/pack-${packname_3}.idx ../test-3-${packname_3}.idx &&
	test -f $GOP/pack-${packname_3}.keep
	)
	'

	test_expect_success \
	'verify pack' \
	'git verify-pack test-1-${packname_1}.idx \
	test-2-${packname_2}.idx \
	test-3-${packname_3}.idx'

	test_expect_success \
	'verify pack -v' \
	'git verify-pack -v test-1-${packname_1}.idx \
	test-2-${packname_2}.idx \
	test-3-${packname_3}.idx'

	test_expect_success \
	'verify-pack catches mismatched .idx and .pack files' \
	'cat test-1-${packname_1}.idx >test-3.idx &&
	cat test-2-${packname_2}.pack >test-3.pack &&
	if git verify-pack test-3.idx
	then false
	else :;
	fi'

	test_expect_success \
	'verify-pack catches a corrupted pack signature' \
	'cat test-1-${packname_1}.pack >test-3.pack &&
	echo \| dd of=test-3.pack count=1 bs=1 conv=notrunc seek=2 &&
	if git verify-pack test-3.idx
	then false
	else :;
	fi'

	test_expect_success \
	'verify-pack catches a corrupted pack version' \
	'cat test-1-${packname_1}.pack >test-3.pack &&
	echo \| dd of=test-3.pack count=1 bs=1 conv=notrunc seek=7 &&
	if git verify-pack test-3.idx
	then false
	else :;
	fi'

	test_expect_success \
	'verify-pack catches a corrupted type/size of the 1st packed object data' \
	'cat test-1-${packname_1}.pack >test-3.pack &&
	echo \| dd of=test-3.pack count=1 bs=1 conv=notrunc seek=12 &&
	if git verify-pack test-3.idx
	then false
	else :;
	fi'

	test_expect_success \
	'verify-pack catches a corrupted sum of the index file itself' \
	'l=$(wc -c <test-3.idx) &&
	l=$(expr $l - 20) &&
	cat test-1-${packname_1}.pack >test-3.pack &&
	printf "%20s" "" \| dd of=test-3.idx count=20 bs=1 conv=notrunc seek=$l &&
	if git verify-pack test-3.pack
	then false
	else :;
	fi'

	test_expect_success \
	'build pack index for an existing pack' \
	'cat test-1-${packname_1}.pack >test-3.pack &&
	git index-pack -o tmp.idx test-3.pack &&
	cmp tmp.idx test-1-${packname_1}.idx &&

	git index-pack test-3.pack &&
	cmp test-3.idx test-1-${packname_1}.idx &&

	cat test-2-${packname_2}.pack >test-3.pack &&
	git index-pack -o tmp.idx test-2-${packname_2}.pack &&
	cmp tmp.idx test-2-${packname_2}.idx &&

	git index-pack test-3.pack &&
	cmp test-3.idx test-2-${packname_2}.idx &&

	cat test-3-${packname_3}.pack >test-3.pack &&
	git index-pack -o tmp.idx test-3-${packname_3}.pack &&
	cmp tmp.idx test-3-${packname_3}.idx &&

	git index-pack test-3.pack &&
	cmp test-3.idx test-3-${packname_3}.idx &&

	cat test-1-${packname_1}.pack >test-4.pack &&
	rm -f test-4.keep &&
	git index-pack --keep=why test-4.pack &&
	cmp test-1-${packname_1}.idx test-4.idx &&
	test -f test-4.keep &&

	:'

	test_expect_success 'unpacking with --strict' '

	for j in a b c d e f g
	do
	for i in 0 1 2 3 4 5 6 7 8 9
	do
	o=$(echo $j$i \| git hash-object -w --stdin) &&
	echo "100644 $o 0 $j$i"
	done
	done >LIST &&
	rm -f .git/index &&
	git update-index --index-info <LIST &&
	LIST=$(git write-tree) &&
	rm -f .git/index &&
	head -n 10 LIST \| git update-index --index-info &&
	LI=$(git write-tree) &&
	rm -f .git/index &&
	tail -n 10 LIST \| git update-index --index-info &&
	ST=$(git write-tree) &&
	git rev-list --objects "$LIST" "$LI" "$ST" >actual &&
	PACK5=$( git pack-objects test-5 <actual ) &&
	PACK6=$( (
	echo "$LIST"
	echo "$LI"
	echo "$ST"
	) \| git pack-objects test-6 ) &&
	test_create_repo test-5 &&
	(
	cd test-5 &&
	git unpack-objects --strict <../test-5-$PACK5.pack &&
	git ls-tree -r $LIST &&
	git ls-tree -r $LI &&
	git ls-tree -r $ST
	) &&
	test_create_repo test-6 &&
	(
	# tree-only into empty repo -- many unreachables
	cd test-6 &&
	test_must_fail git unpack-objects --strict <../test-6-$PACK6.pack
	) &&
	(
	# already populated -- no unreachables
	cd test-5 &&
	git unpack-objects --strict <../test-6-$PACK6.pack
	)
	'

	test_expect_success 'index-pack with --strict' '

	for j in a b c d e f g
	do
	for i in 0 1 2 3 4 5 6 7 8 9
	do
	o=$(echo $j$i \| git hash-object -w --stdin) &&
	echo "100644 $o 0 $j$i"
	done
	done >LIST &&
	rm -f .git/index &&
	git update-index --index-info <LIST &&
	LIST=$(git write-tree) &&
	rm -f .git/index &&
	head -n 10 LIST \| git update-index --index-info &&
	LI=$(git write-tree) &&
	rm -f .git/index &&
	tail -n 10 LIST \| git update-index --index-info &&
	ST=$(git write-tree) &&
	git rev-list --objects "$LIST" "$LI" "$ST" >actual &&
	PACK5=$( git pack-objects test-5 <actual ) &&
	PACK6=$( (
	echo "$LIST"
	echo "$LI"
	echo "$ST"
	) \| git pack-objects test-6 ) &&
	test_create_repo test-7 &&
	(
	cd test-7 &&
	git index-pack --strict --stdin <../test-5-$PACK5.pack &&
	git ls-tree -r $LIST &&
	git ls-tree -r $LI &&
	git ls-tree -r $ST
	) &&
	test_create_repo test-8 &&
	(
	# tree-only into empty repo -- many unreachables
	cd test-8 &&
	test_must_fail git index-pack --strict --stdin <../test-6-$PACK6.pack
	) &&
	(
	# already populated -- no unreachables
	cd test-7 &&
	git index-pack --strict --stdin <../test-6-$PACK6.pack
	)
	'

	test_expect_success 'honor pack.packSizeLimit' '
	git config pack.packSizeLimit 3m &&
	packname_10=$(git pack-objects test-10 <obj-list) &&
	test 2 = $(ls test-10-*.pack \| wc -l)
	'

	test_expect_success 'verify resulting packs' '
	git verify-pack test-10-*.pack
	'

	test_expect_success 'tolerate packsizelimit smaller than biggest object' '
	git config pack.packSizeLimit 1 &&
	packname_11=$(git pack-objects test-11 <obj-list) &&
	test 5 = $(ls test-11-*.pack \| wc -l)
	'

	test_expect_success 'verify resulting packs' '
	git verify-pack test-11-*.pack
	'

	test_expect_success 'set up pack for non-repo tests' '
	# make sure we have a pack with no matching index file
	cp test-1-*.pack foo.pack
	'

	test_expect_success 'index-pack --stdin complains of non-repo' '
	nongit test_must_fail git index-pack --stdin <foo.pack &&
	test_path_is_missing non-repo/.git
	'

	test_expect_success 'index-pack <pack> works in non-repo' '
	nongit git index-pack ../foo.pack &&
	test_path_is_file foo.idx
	'

	test_expect_success 'index-pack --strict <pack> works in non-repo' '
	rm -f foo.idx &&
	nongit git index-pack --strict ../foo.pack &&
	test_path_is_file foo.idx
	'

	test_expect_success !PTHREADS,C_LOCALE_OUTPUT 'index-pack --threads=N or pack.threads=N warns when no pthreads' '
	test_must_fail git index-pack --threads=2 2>err &&
	grep ^warning: err >warnings &&
	test_line_count = 1 warnings &&
	grep -F "no threads support, ignoring --threads=2" err &&

	test_must_fail git -c pack.threads=2 index-pack 2>err &&
	grep ^warning: err >warnings &&
	test_line_count = 1 warnings &&
	grep -F "no threads support, ignoring pack.threads" err &&

	test_must_fail git -c pack.threads=2 index-pack --threads=4 2>err &&
	grep ^warning: err >warnings &&
	test_line_count = 2 warnings &&
	grep -F "no threads support, ignoring --threads=4" err &&
	grep -F "no threads support, ignoring pack.threads" err
	'

	test_expect_success !PTHREADS,C_LOCALE_OUTPUT 'pack-objects --threads=N or pack.threads=N warns when no pthreads' '
	git pack-objects --threads=2 --stdout --all </dev/null >/dev/null 2>err &&
	grep ^warning: err >warnings &&
	test_line_count = 1 warnings &&
	grep -F "no threads support, ignoring --threads" err &&

	git -c pack.threads=2 pack-objects --stdout --all </dev/null >/dev/null 2>err &&
	grep ^warning: err >warnings &&
	test_line_count = 1 warnings &&
	grep -F "no threads support, ignoring pack.threads" err &&

	git -c pack.threads=2 pack-objects --threads=4 --stdout --all </dev/null >/dev/null 2>err &&
	grep ^warning: err >warnings &&
	test_line_count = 2 warnings &&
	grep -F "no threads support, ignoring --threads" err &&
	grep -F "no threads support, ignoring pack.threads" err
	'

	test_expect_success 'pack-objects in too-many-packs mode' '
	GIT_TEST_FULL_IN_PACK_ARRAY=1 git repack -ad &&
	git fsck
	'

	test_expect_success 'setup: fake a SHA1 hash collision' '
	git init corrupt &&
	(
	cd corrupt &&
	long_a=$(git hash-object -w ../a \| sed -e "s!^..!&/!") &&
	long_b=$(git hash-object -w ../b \| sed -e "s!^..!&/!") &&
	test -f .git/objects/$long_b &&
	cp -f .git/objects/$long_a \
	.git/objects/$long_b
	)
	'

	test_expect_success 'make sure index-pack detects the SHA1 collision' '
	(
	cd corrupt &&
	test_must_fail git index-pack -o ../bad.idx ../test-3.pack 2>msg &&
	test_i18ngrep "SHA1 COLLISION FOUND" msg
	)
	'

	test_expect_success 'make sure index-pack detects the SHA1 collision (large blobs)' '
	(
	cd corrupt &&
	test_must_fail git -c core.bigfilethreshold=1 index-pack -o ../bad.idx ../test-3.pack 2>msg &&
	test_i18ngrep "SHA1 COLLISION FOUND" msg
	)
	'

	test_done