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      for i in `seq -w 100`
  14      do
  15          echo $i >file_$i &&
  16          test-genrandom "$i" 8192 >>file_$i &&
  17          git-update-index --add file_$i || return 1
  18      done &&
  19      echo 101 >file_101 && tail -c 8192 file_100 >>file_101 &&
  20      git-update-index --add file_101 &&
  21      tree=`git-write-tree` &&
  22      commit=`git-commit-tree $tree </dev/null` && {
  23          echo $tree &&
  24          git-ls-tree $tree | sed -e "s/.* \\([0-9a-f]*\\)       .*/\\1/"
  25      } >obj-list &&
  26      git-update-ref HEAD $commit'
  27
  28 test_expect_success \
  29     'pack-objects with index version 1' \
  30     'pack1=$(git-pack-objects --index-version=1 test-1 <obj-list) &&
  31      git-verify-pack -v "test-1-${pack1}.pack"'
  32
  33 test_expect_success \
  34     'pack-objects with index version 2' \
  35     'pack2=$(git-pack-objects --index-version=2 test-2 <obj-list) &&
  36      git-verify-pack -v "test-2-${pack2}.pack"'
  37
  38 test_expect_success \
  39     'both packs should be identical' \
  40     'cmp "test-1-${pack1}.pack" "test-2-${pack2}.pack"'
  41
  42 test_expect_failure \
  43     'index v1 and index v2 should be different' \
  44     'cmp "test-1-${pack1}.idx" "test-2-${pack2}.idx"'
  45
  46 test_expect_success \
  47     'index-pack with index version 1' \
  48     'git-index-pack --index-version=1 -o 1.idx "test-1-${pack1}.pack"'
  49
  50 test_expect_success \
  51     'index-pack with index version 2' \
  52     'git-index-pack --index-version=2 -o 2.idx "test-1-${pack1}.pack"'
  53
  54 test_expect_success \
  55     'index-pack results should match pack-objects ones' \
  56     'cmp "test-1-${pack1}.idx" "1.idx" &&
  57      cmp "test-2-${pack2}.idx" "2.idx"'
  58
  59 test_expect_success \
  60     'index v2: force some 64-bit offsets with pack-objects' \
  61     'pack3=$(git-pack-objects --index-version=2,0x40000 test-3 <obj-list) &&
  62      git-verify-pack -v "test-3-${pack3}.pack"'
  63
  64 test_expect_failure \
  65     '64-bit offsets: should be different from previous index v2 results' \
  66     'cmp "test-2-${pack2}.idx" "test-3-${pack3}.idx"'
  67
  68 test_expect_success \
  69     'index v2: force some 64-bit offsets with index-pack' \
  70     'git-index-pack --index-version=2,0x40000 -o 3.idx "test-1-${pack1}.pack"'
  71
  72 test_expect_success \
  73     '64-bit offsets: index-pack result should match pack-objects one' \
  74     'cmp "test-3-${pack3}.idx" "3.idx"'
  75
  76 test_expect_success \
  77     '[index v1] 1) stream pack to repository' \
  78     'git-index-pack --index-version=1 --stdin < "test-1-${pack1}.pack" &&
  79      git-prune-packed &&
  80      git-count-objects | ( read nr rest && test "$nr" -eq 1 ) &&
  81      cmp "test-1-${pack1}.pack" ".git/objects/pack/pack-${pack1}.pack" &&
  82      cmp "test-1-${pack1}.idx"  ".git/objects/pack/pack-${pack1}.idx"'
  83
  84 test_expect_success \
  85     '[index v1] 2) create a stealth corruption in a delta base reference' \
  86     '# this test assumes a delta smaller than 16 bytes at the end of the pack
  87      git-show-index <1.idx | sort -n | tail -n 1 | (
  88        read delta_offs delta_sha1 &&
  89        git-cat-file blob "$delta_sha1" > blob_1 &&
  90        chmod +w ".git/objects/pack/pack-${pack1}.pack" &&
  91        dd of=".git/objects/pack/pack-${pack1}.pack" seek=$(($delta_offs + 1)) \
  92           if=".git/objects/pack/pack-${pack1}.idx" skip=$((256 * 4 + 4)) \
  93           bs=1 count=20 conv=notrunc &&
  94        git-cat-file blob "$delta_sha1" > blob_2 )'
  95
  96 test_expect_failure \
  97     '[index v1] 3) corrupted delta happily returned wrong data' \
  98     'cmp blob_1 blob_2'
  99
 100 test_expect_failure \
 101     '[index v1] 4) confirm that the pack is actually corrupted' \
 102     'git-fsck --full $commit'
 103
 104 test_expect_success \
 105     '[index v1] 5) pack-objects happily reuses corrupted data' \
 106     'pack4=$(git-pack-objects test-4 <obj-list) &&
 107      test -f "test-4-${pack1}.pack"'
 108
 109 test_expect_failure \
 110     '[index v1] 6) newly created pack is BAD !' \
 111     'git-verify-pack -v "test-4-${pack1}.pack"'
 112
 113 test_expect_success \
 114     '[index v2] 1) stream pack to repository' \
 115     'rm -f .git/objects/pack/* &&
 116      git-index-pack --index-version=2,0x40000 --stdin < "test-1-${pack1}.pack" &&
 117      git-prune-packed &&
 118      git-count-objects | ( read nr rest && test "$nr" -eq 1 ) &&
 119      cmp "test-1-${pack1}.pack" ".git/objects/pack/pack-${pack1}.pack" &&
 120      cmp "test-3-${pack1}.idx"  ".git/objects/pack/pack-${pack1}.idx"'
 121
 122 test_expect_success \
 123     '[index v2] 2) create a stealth corruption in a delta base reference' \
 124     '# this test assumes a delta smaller than 16 bytes at the end of the pack
 125      git-show-index <1.idx | sort -n | tail -n 1 | (
 126        read delta_offs delta_sha1 delta_crc &&
 127        git-cat-file blob "$delta_sha1" > blob_3 &&
 128        chmod +w ".git/objects/pack/pack-${pack1}.pack" &&
 129        dd of=".git/objects/pack/pack-${pack1}.pack" seek=$(($delta_offs + 1)) \
 130           if=".git/objects/pack/pack-${pack1}.idx" skip=$((8 + 256 * 4)) \
 131           bs=1 count=20 conv=notrunc &&
 132        git-cat-file blob "$delta_sha1" > blob_4 )'
 133
 134 test_expect_failure \
 135     '[index v2] 3) corrupted delta happily returned wrong data' \
 136     'cmp blob_3 blob_4'
 137
 138 test_expect_failure \
 139     '[index v2] 4) confirm that the pack is actually corrupted' \
 140     'git-fsck --full $commit'
 141
 142 test_expect_failure \
 143     '[index v2] 5) pack-objects refuses to reuse corrupted data' \
 144     'git-pack-objects test-5 <obj-list'
 145
 146 test_done