t/t5302-pack-index.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2007 Nicolas Pitre
   4 #
   5
   6 test_description='pack index with 64-bit offsets and object CRC'
   7 . ./test-lib.sh
   8
   9 test_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 $commit'
  30
  31 test_expect_success \
  32     'pack-objects with index version 1' \
  33     'pack1=$(git pack-objects --index-version=1 test-1 <obj-list) &&
  34      git verify-pack -v "test-1-${pack1}.pack"'
  35
  36 test_expect_success \
  37     'pack-objects with index version 2' \
  38     'pack2=$(git pack-objects --index-version=2 test-2 <obj-list) &&
  39      git verify-pack -v "test-2-${pack2}.pack"'
  40
  41 test_expect_success \
  42     'both packs should be identical' \
  43     'cmp "test-1-${pack1}.pack" "test-2-${pack2}.pack"'
  44
  45 test_expect_failure \
  46     'index v1 and index v2 should be different' \
  47     'cmp "test-1-${pack1}.idx" "test-2-${pack2}.idx"'
  48
  49 test_expect_success \
  50     'index-pack with index version 1' \
  51     'git-index-pack --index-version=1 -o 1.idx "test-1-${pack1}.pack"'
  52
  53 test_expect_success \
  54     'index-pack with index version 2' \
  55     'git-index-pack --index-version=2 -o 2.idx "test-1-${pack1}.pack"'
  56
  57 test_expect_success \
  58     'index-pack results should match pack-objects ones' \
  59     'cmp "test-1-${pack1}.idx" "1.idx" &&
  60      cmp "test-2-${pack2}.idx" "2.idx"'
  61
  62 test_expect_success \
  63     'index v2: force some 64-bit offsets with pack-objects' \
  64     'pack3=$(git pack-objects --index-version=2,0x40000 test-3 <obj-list) &&
  65      git verify-pack -v "test-3-${pack3}.pack"'
  66
  67 test_expect_failure \
  68     '64-bit offsets: should be different from previous index v2 results' \
  69     'cmp "test-2-${pack2}.idx" "test-3-${pack3}.idx"'
  70
  71 test_expect_success \
  72     'index v2: force some 64-bit offsets with index-pack' \
  73     'git-index-pack --index-version=2,0x40000 -o 3.idx "test-1-${pack1}.pack"'
  74
  75 test_expect_success \
  76     '64-bit offsets: index-pack result should match pack-objects one' \
  77     'cmp "test-3-${pack3}.idx" "3.idx"'
  78
  79 test_expect_success \
  80     '[index v1] 1) stream pack to repository' \
  81     'git-index-pack --index-version=1 --stdin < "test-1-${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-${pack1}.idx"'
  86
  87 test_expect_success \
  88     '[index v1] 2) create a stealth corruption in a delta base reference' \
  89     '# this test assumes a delta smaller than 16 bytes at the end of the pack
  90      git show-index <1.idx | sort -n | tail -n 1 | (
  91        read delta_offs delta_sha1 &&
  92        git cat-file blob "$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
  99 test_expect_failure \
 100     '[index v1] 3) corrupted delta happily returned wrong data' \
 101     'cmp blob_1 blob_2'
 102
 103 test_expect_failure \
 104     '[index v1] 4) confirm that the pack is actually corrupted' \
 105     'git fsck --full $commit'
 106
 107 test_expect_success \
 108     '[index v1] 5) pack-objects happily reuses corrupted data' \
 109     'pack4=$(git pack-objects test-4 <obj-list) &&
 110      test -f "test-4-${pack1}.pack"'
 111
 112 test_expect_failure \
 113     '[index v1] 6) newly created pack is BAD !' \
 114     'git verify-pack -v "test-4-${pack1}.pack"'
 115
 116 test_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
 125 test_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
 137 test_expect_failure \
 138     '[index v2] 3) corrupted delta happily returned wrong data' \
 139     'cmp blob_3 blob_4'
 140
 141 test_expect_failure \
 142     '[index v2] 4) confirm that the pack is actually corrupted' \
 143     'git fsck --full $commit'
 144
 145 test_expect_failure \
 146     '[index v2] 5) pack-objects refuses to reuse corrupted data' \
 147     'git pack-objects test-5 <obj-list'
 148
 149 test_done