Revision ec445074e0ac4d6003acd21c512c43c8fdb8be86 authored by Junio C Hamano on 12 March 2014, 18:04:11 UTC, committed by Junio C Hamano on 13 March 2014, 21:22:20 UTC
The original description talked only about what it does. Instead, start it with the purpose of the command, i.e. what it is used for, and then mention what it does to achieve that goal. Clarify what <start>, <url> and <end> means in the context of the overall purpose of the command. Describe the extended syntax of <end> parameter that is used when the local branch name is different from the branch name at the repository the changes are published. Helped-by: Eric Sunshine Signed-off-by: Junio C Hamano <gitster@pobox.com>
1 parent 5aae66b
t5302-pack-index.sh
#!/bin/sh
#
# Copyright (c) 2007 Nicolas Pitre
#
test_description='pack index with 64-bit offsets and object CRC'
. ./test-lib.sh
test_expect_success \
'setup' \
'rm -rf .git &&
git init &&
git config pack.threads 1 &&
i=1 &&
while test $i -le 100
do
iii=`printf '%03i' $i`
test-genrandom "bar" 200 > wide_delta_$iii &&
test-genrandom "baz $iii" 50 >> wide_delta_$iii &&
test-genrandom "foo"$i 100 > deep_delta_$iii &&
test-genrandom "foo"`expr $i + 1` 100 >> deep_delta_$iii &&
test-genrandom "foo"`expr $i + 2` 100 >> deep_delta_$iii &&
echo $iii >file_$iii &&
test-genrandom "$iii" 8192 >>file_$iii &&
git update-index --add file_$iii deep_delta_$iii wide_delta_$iii &&
i=`expr $i + 1` || return 1
done &&
{ echo 101 && test-genrandom 100 8192; } >file_101 &&
git update-index --add file_101 &&
tree=`git write-tree` &&
commit=`git commit-tree $tree </dev/null` && {
echo $tree &&
git ls-tree $tree | sed -e "s/.* \\([0-9a-f]*\\) .*/\\1/"
} >obj-list &&
git update-ref HEAD $commit'
test_expect_success \
'pack-objects with index version 1' \
'pack1=$(git pack-objects --index-version=1 test-1 <obj-list) &&
git verify-pack -v "test-1-${pack1}.pack"'
test_expect_success \
'pack-objects with index version 2' \
'pack2=$(git pack-objects --index-version=2 test-2 <obj-list) &&
git verify-pack -v "test-2-${pack2}.pack"'
test_expect_success \
'both packs should be identical' \
'cmp "test-1-${pack1}.pack" "test-2-${pack2}.pack"'
test_expect_success \
'index v1 and index v2 should be different' \
'! cmp "test-1-${pack1}.idx" "test-2-${pack2}.idx"'
test_expect_success \
'index-pack with index version 1' \
'git index-pack --index-version=1 -o 1.idx "test-1-${pack1}.pack"'
test_expect_success \
'index-pack with index version 2' \
'git index-pack --index-version=2 -o 2.idx "test-1-${pack1}.pack"'
test_expect_success \
'index-pack results should match pack-objects ones' \
'cmp "test-1-${pack1}.idx" "1.idx" &&
cmp "test-2-${pack2}.idx" "2.idx"'
test_expect_success 'index-pack --verify on index version 1' '
git index-pack --verify "test-1-${pack1}.pack"
'
test_expect_success 'index-pack --verify on index version 2' '
git index-pack --verify "test-2-${pack2}.pack"
'
test_expect_success \
'pack-objects --index-version=2, is not accepted' \
'test_must_fail git pack-objects --index-version=2, test-3 <obj-list'
test_expect_success \
'index v2: force some 64-bit offsets with pack-objects' \
'pack3=$(git pack-objects --index-version=2,0x40000 test-3 <obj-list)'
if msg=$(git verify-pack -v "test-3-${pack3}.pack" 2>&1) ||
! (echo "$msg" | grep "pack too large .* off_t")
then
test_set_prereq OFF64_T
else
say "# skipping tests concerning 64-bit offsets"
fi
test_expect_success OFF64_T \
'index v2: verify a pack with some 64-bit offsets' \
'git verify-pack -v "test-3-${pack3}.pack"'
test_expect_success OFF64_T \
'64-bit offsets: should be different from previous index v2 results' \
'! cmp "test-2-${pack2}.idx" "test-3-${pack3}.idx"'
test_expect_success OFF64_T \
'index v2: force some 64-bit offsets with index-pack' \
'git index-pack --index-version=2,0x40000 -o 3.idx "test-1-${pack1}.pack"'
test_expect_success OFF64_T \
'64-bit offsets: index-pack result should match pack-objects one' \
'cmp "test-3-${pack3}.idx" "3.idx"'
test_expect_success OFF64_T 'index-pack --verify on 64-bit offset v2 (cheat)' '
# This cheats by knowing which lower offset should still be encoded
# in 64-bit representation.
git index-pack --verify --index-version=2,0x40000 "test-3-${pack3}.pack"
'
test_expect_success OFF64_T 'index-pack --verify on 64-bit offset v2' '
git index-pack --verify "test-3-${pack3}.pack"
'
# returns the object number for given object in given pack index
index_obj_nr()
{
idx_file=$1
object_sha1=$2
nr=0
git show-index < $idx_file |
while read offs sha1 extra
do
nr=$(($nr + 1))
test "$sha1" = "$object_sha1" || continue
echo "$(($nr - 1))"
break
done
}
# returns the pack offset for given object as found in given pack index
index_obj_offset()
{
idx_file=$1
object_sha1=$2
git show-index < $idx_file | grep $object_sha1 |
( read offs extra && echo "$offs" )
}
test_expect_success \
'[index v1] 1) stream pack to repository' \
'git index-pack --index-version=1 --stdin < "test-1-${pack1}.pack" &&
git prune-packed &&
git count-objects | ( read nr rest && test "$nr" -eq 1 ) &&
cmp "test-1-${pack1}.pack" ".git/objects/pack/pack-${pack1}.pack" &&
cmp "test-1-${pack1}.idx" ".git/objects/pack/pack-${pack1}.idx"'
test_expect_success \
'[index v1] 2) create a stealth corruption in a delta base reference' \
'# This test assumes file_101 is a delta smaller than 16 bytes.
# It should be against file_100 but we substitute its base for file_099
sha1_101=`git hash-object file_101` &&
sha1_099=`git hash-object file_099` &&
offs_101=`index_obj_offset 1.idx $sha1_101` &&
nr_099=`index_obj_nr 1.idx $sha1_099` &&
chmod +w ".git/objects/pack/pack-${pack1}.pack" &&
dd of=".git/objects/pack/pack-${pack1}.pack" seek=$(($offs_101 + 1)) \
if=".git/objects/pack/pack-${pack1}.idx" \
skip=$((4 + 256 * 4 + $nr_099 * 24)) \
bs=1 count=20 conv=notrunc &&
git cat-file blob $sha1_101 > file_101_foo1'
test_expect_success \
'[index v1] 3) corrupted delta happily returned wrong data' \
'test -f file_101_foo1 && ! cmp file_101 file_101_foo1'
test_expect_success \
'[index v1] 4) confirm that the pack is actually corrupted' \
'test_must_fail git fsck --full $commit'
test_expect_success \
'[index v1] 5) pack-objects happily reuses corrupted data' \
'pack4=$(git pack-objects test-4 <obj-list) &&
test -f "test-4-${pack4}.pack"'
test_expect_success \
'[index v1] 6) newly created pack is BAD !' \
'test_must_fail git verify-pack -v "test-4-${pack4}.pack"'
test_expect_success \
'[index v2] 1) stream pack to repository' \
'rm -f .git/objects/pack/* &&
git index-pack --index-version=2 --stdin < "test-1-${pack1}.pack" &&
git prune-packed &&
git count-objects | ( read nr rest && test "$nr" -eq 1 ) &&
cmp "test-1-${pack1}.pack" ".git/objects/pack/pack-${pack1}.pack" &&
cmp "test-2-${pack1}.idx" ".git/objects/pack/pack-${pack1}.idx"'
test_expect_success \
'[index v2] 2) create a stealth corruption in a delta base reference' \
'# This test assumes file_101 is a delta smaller than 16 bytes.
# It should be against file_100 but we substitute its base for file_099
sha1_101=`git hash-object file_101` &&
sha1_099=`git hash-object file_099` &&
offs_101=`index_obj_offset 1.idx $sha1_101` &&
nr_099=`index_obj_nr 1.idx $sha1_099` &&
chmod +w ".git/objects/pack/pack-${pack1}.pack" &&
dd of=".git/objects/pack/pack-${pack1}.pack" seek=$(($offs_101 + 1)) \
if=".git/objects/pack/pack-${pack1}.idx" \
skip=$((8 + 256 * 4 + $nr_099 * 20)) \
bs=1 count=20 conv=notrunc &&
git cat-file blob $sha1_101 > file_101_foo2'
test_expect_success \
'[index v2] 3) corrupted delta happily returned wrong data' \
'test -f file_101_foo2 && ! cmp file_101 file_101_foo2'
test_expect_success \
'[index v2] 4) confirm that the pack is actually corrupted' \
'test_must_fail git fsck --full $commit'
test_expect_success \
'[index v2] 5) pack-objects refuses to reuse corrupted data' \
'test_must_fail git pack-objects test-5 <obj-list &&
test_must_fail git pack-objects --no-reuse-object test-6 <obj-list'
test_expect_success \
'[index v2] 6) verify-pack detects CRC mismatch' \
'rm -f .git/objects/pack/* &&
git index-pack --index-version=2 --stdin < "test-1-${pack1}.pack" &&
git verify-pack ".git/objects/pack/pack-${pack1}.pack" &&
obj=`git hash-object file_001` &&
nr=`index_obj_nr ".git/objects/pack/pack-${pack1}.idx" $obj` &&
chmod +w ".git/objects/pack/pack-${pack1}.idx" &&
printf xxxx | dd of=".git/objects/pack/pack-${pack1}.idx" conv=notrunc \
bs=1 count=4 seek=$((8 + 256 * 4 + `wc -l <obj-list` * 20 + $nr * 4)) &&
( while read obj
do git cat-file -p $obj >/dev/null || exit 1
done <obj-list ) &&
test_must_fail git verify-pack ".git/objects/pack/pack-${pack1}.pack"
'
test_expect_success 'running index-pack in the object store' '
rm -f .git/objects/pack/* &&
cp test-1-${pack1}.pack .git/objects/pack/pack-${pack1}.pack &&
(
cd .git/objects/pack
git index-pack pack-${pack1}.pack
) &&
test -f .git/objects/pack/pack-${pack1}.idx
'
test_done
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