Andrew's git - gitweb.git/blob - t/t5302-pack-index.sh

   1#!/bin/sh
   2#
   3# Copyright (c) 2007 Nicolas Pitre
   4#
   5
   6test_description='pack index with 64-bit offsets and object CRC'
   7. ./test-lib.sh
   8
   9test_expect_success \
  10    'setup' \
  11    'rm -rf .git
  12     git init &&
  13     i=1 &&
  14         while test $i -le 100
  15     do
  16                 i=`printf '%03i' $i`
  17         echo $i >file_$i &&
  18         test-genrandom "$i" 8192 >>file_$i &&
  19         git update-index --add file_$i &&
  20                 i=`expr $i + 1` || return 1
  21     done &&
  22     { echo 101 && test-genrandom 100 8192; } >file_101 &&
  23     git update-index --add file_101 &&
  24     tree=`git write-tree` &&
  25     commit=`git commit-tree $tree </dev/null` && {
  26         echo $tree &&
  27         git ls-tree $tree | sed -e "s/.* \\([0-9a-f]*\\)       .*/\\1/"
  28     } >obj-list &&
  29     git update-ref HEAD $commit'
  30
  31test_expect_success \
  32    'pack-objects with index version 1' \
  33    'pack1=$(git pack-objects --index-version=1 test-1 <obj-list) &&
  34     git verify-pack -v "test-1-${pack1}.pack"'
  35
  36test_expect_success \
  37    'pack-objects with index version 2' \
  38    'pack2=$(git pack-objects --index-version=2 test-2 <obj-list) &&
  39     git verify-pack -v "test-2-${pack2}.pack"'
  40
  41test_expect_success \
  42    'both packs should be identical' \
  43    'cmp "test-1-${pack1}.pack" "test-2-${pack2}.pack"'
  44
  45test_expect_failure \
  46    'index v1 and index v2 should be different' \
  47    'cmp "test-1-${pack1}.idx" "test-2-${pack2}.idx"'
  48
  49test_expect_success \
  50    'index-pack with index version 1' \
  51    'git-index-pack --index-version=1 -o 1.idx "test-1-${pack1}.pack"'
  52
  53test_expect_success \
  54    'index-pack with index version 2' \
  55    'git-index-pack --index-version=2 -o 2.idx "test-1-${pack1}.pack"'
  56
  57test_expect_success \
  58    'index-pack results should match pack-objects ones' \
  59    'cmp "test-1-${pack1}.idx" "1.idx" &&
  60     cmp "test-2-${pack2}.idx" "2.idx"'
  61
  62test_expect_success \
  63    'index v2: force some 64-bit offsets with pack-objects' \
  64    'pack3=$(git pack-objects --index-version=2,0x40000 test-3 <obj-list) &&
  65     git verify-pack -v "test-3-${pack3}.pack"'
  66
  67test_expect_failure \
  68    '64-bit offsets: should be different from previous index v2 results' \
  69    'cmp "test-2-${pack2}.idx" "test-3-${pack3}.idx"'
  70
  71test_expect_success \
  72    'index v2: force some 64-bit offsets with index-pack' \
  73    'git-index-pack --index-version=2,0x40000 -o 3.idx "test-1-${pack1}.pack"'
  74
  75test_expect_success \
  76    '64-bit offsets: index-pack result should match pack-objects one' \
  77    'cmp "test-3-${pack3}.idx" "3.idx"'
  78
  79test_expect_success \
  80    '[index v1] 1) stream pack to repository' \
  81    'git-index-pack --index-version=1 --stdin < "test-1-${pack1}.pack" &&
  82     git prune-packed &&
  83     git count-objects | ( read nr rest && test "$nr" -eq 1 ) &&
  84     cmp "test-1-${pack1}.pack" ".git/objects/pack/pack-${pack1}.pack" &&
  85     cmp "test-1-${pack1}.idx"  ".git/objects/pack/pack-${pack1}.idx"'
  86
  87test_expect_success \
  88    '[index v1] 2) create a stealth corruption in a delta base reference' \
  89    '# this test assumes a delta smaller than 16 bytes at the end of the pack
  90     git show-index <1.idx | sort -n | tail -n 1 | (
  91       read delta_offs delta_sha1 &&
  92       git cat-file blob "$delta_sha1" > blob_1 &&
  93       chmod +w ".git/objects/pack/pack-${pack1}.pack" &&
  94       dd of=".git/objects/pack/pack-${pack1}.pack" seek=$(($delta_offs + 1)) \
  95          if=".git/objects/pack/pack-${pack1}.idx" skip=$((256 * 4 + 4)) \
  96          bs=1 count=20 conv=notrunc &&
  97       git cat-file blob "$delta_sha1" > blob_2 )'
  98
  99test_expect_failure \
 100    '[index v1] 3) corrupted delta happily returned wrong data' \
 101    'cmp blob_1 blob_2'
 102
 103test_expect_failure \
 104    '[index v1] 4) confirm that the pack is actually corrupted' \
 105    'git fsck --full $commit'
 106
 107test_expect_success \
 108    '[index v1] 5) pack-objects happily reuses corrupted data' \
 109    'pack4=$(git pack-objects test-4 <obj-list) &&
 110     test -f "test-4-${pack1}.pack"'
 111
 112test_expect_failure \
 113    '[index v1] 6) newly created pack is BAD !' \
 114    'git verify-pack -v "test-4-${pack1}.pack"'
 115
 116test_expect_success \
 117    '[index v2] 1) stream pack to repository' \
 118    'rm -f .git/objects/pack/* &&
 119     git-index-pack --index-version=2,0x40000 --stdin < "test-1-${pack1}.pack" &&
 120     git prune-packed &&
 121     git count-objects | ( read nr rest && test "$nr" -eq 1 ) &&
 122     cmp "test-1-${pack1}.pack" ".git/objects/pack/pack-${pack1}.pack" &&
 123     cmp "test-3-${pack1}.idx"  ".git/objects/pack/pack-${pack1}.idx"'
 124
 125test_expect_success \
 126    '[index v2] 2) create a stealth corruption in a delta base reference' \
 127    '# this test assumes a delta smaller than 16 bytes at the end of the pack
 128     git show-index <1.idx | sort -n | tail -n 1 | (
 129       read delta_offs delta_sha1 delta_crc &&
 130       git cat-file blob "$delta_sha1" > blob_3 &&
 131       chmod +w ".git/objects/pack/pack-${pack1}.pack" &&
 132       dd of=".git/objects/pack/pack-${pack1}.pack" seek=$(($delta_offs + 1)) \
 133          if=".git/objects/pack/pack-${pack1}.idx" skip=$((8 + 256 * 4)) \
 134          bs=1 count=20 conv=notrunc &&
 135       git cat-file blob "$delta_sha1" > blob_4 )'
 136
 137test_expect_failure \
 138    '[index v2] 3) corrupted delta happily returned wrong data' \
 139    'cmp blob_3 blob_4'
 140
 141test_expect_failure \
 142    '[index v2] 4) confirm that the pack is actually corrupted' \
 143    'git fsck --full $commit'
 144
 145test_expect_failure \
 146    '[index v2] 5) pack-objects refuses to reuse corrupted data' \
 147    'git pack-objects test-5 <obj-list'
 148
 149test_done