t/t5325-reverse-index.sh

   1 #!/bin/sh
   2
   3 test_description='on-disk reverse index'
   4
   5 TEST_PASSES_SANITIZE_LEAK=true
   6 . ./test-lib.sh
   7
   8 # The below tests want control over the 'pack.writeReverseIndex' setting
   9 # themselves to assert various combinations of it with other options.
  10 sane_unset GIT_TEST_NO_WRITE_REV_INDEX
  11
  12 packdir=.git/objects/pack
  13
  14 test_expect_success 'setup' '
  15         test_commit base &&
  16
  17         test_config pack.writeReverseIndex false &&
  18         pack=$(git pack-objects --all $packdir/pack) &&
  19         rev=$packdir/pack-$pack.rev &&
  20
  21         test_path_is_missing $rev
  22 '
  23
  24 test_index_pack () {
  25         rm -f $rev &&
  26         conf=$1 &&
  27         shift &&
  28         # remove the index since Windows won't overwrite an existing file
  29         rm $packdir/pack-$pack.idx &&
  30         git -c pack.writeReverseIndex=$conf index-pack "$@" \
  31                 $packdir/pack-$pack.pack
  32 }
  33
  34 test_expect_success 'index-pack with pack.writeReverseIndex' '
  35         test_index_pack "" &&
  36         test_path_is_missing $rev &&
  37
  38         test_index_pack false &&
  39         test_path_is_missing $rev &&
  40
  41         test_index_pack true &&
  42         test_path_is_file $rev
  43 '
  44
  45 test_expect_success 'index-pack with --[no-]rev-index' '
  46         for conf in "" true false
  47         do
  48                 test_index_pack "$conf" --rev-index &&
  49                 test_path_exists $rev &&
  50
  51                 test_index_pack "$conf" --no-rev-index &&
  52                 test_path_is_missing $rev || return 1
  53         done
  54 '
  55
  56 test_expect_success 'index-pack can verify reverse indexes' '
  57         test_when_finished "rm -f $rev" &&
  58         test_index_pack true &&
  59
  60         test_path_is_file $rev &&
  61         git index-pack --rev-index --verify $packdir/pack-$pack.pack &&
  62
  63         # Intentionally corrupt the reverse index.
  64         chmod u+w $rev &&
  65         printf "xxxx" | dd of=$rev bs=1 count=4 conv=notrunc &&
  66
  67         test_must_fail git index-pack --rev-index --verify \
  68                 $packdir/pack-$pack.pack 2>err &&
  69         grep "validation error" err
  70 '
  71
  72 test_expect_success 'index-pack infers reverse index name with -o' '
  73         git index-pack --rev-index -o other.idx $packdir/pack-$pack.pack &&
  74         test_path_is_file other.idx &&
  75         test_path_is_file other.rev
  76 '
  77
  78 test_expect_success 'pack-objects respects pack.writeReverseIndex' '
  79         test_when_finished "rm -fr pack-1-*" &&
  80
  81         git -c pack.writeReverseIndex= pack-objects --all pack-1 &&
  82         test_path_is_missing pack-1-*.rev &&
  83
  84         git -c pack.writeReverseIndex=false pack-objects --all pack-1 &&
  85         test_path_is_missing pack-1-*.rev &&
  86
  87         git -c pack.writeReverseIndex=true pack-objects --all pack-1 &&
  88         test_path_is_file pack-1-*.rev
  89 '
  90
  91 test_expect_success 'reverse index is not generated when available on disk' '
  92         test_index_pack true &&
  93         test_path_is_file $rev &&
  94
  95         git rev-parse HEAD >tip &&
  96         GIT_TEST_REV_INDEX_DIE_IN_MEMORY=1 git cat-file \
  97                 --batch-check="%(objectsize:disk)" <tip
  98 '
  99
 100 test_expect_success 'reverse index is ignored when pack.readReverseIndex is false' '
 101         test_index_pack true &&
 102         test_path_is_file $rev &&
 103
 104         test_config pack.readReverseIndex false &&
 105
 106         git rev-parse HEAD >tip &&
 107         GIT_TEST_REV_INDEX_DIE_ON_DISK=1 git cat-file \
 108                 --batch-check="%(objectsize:disk)" <tip
 109 '
 110
 111 test_expect_success 'revindex in-memory vs on-disk' '
 112         git init repo &&
 113         test_when_finished "rm -fr repo" &&
 114         (
 115                 cd repo &&
 116
 117                 test_commit commit &&
 118
 119                 git rev-list --objects --no-object-names --all >objects &&
 120
 121                 git -c pack.writeReverseIndex=false repack -ad &&
 122                 test_path_is_missing $packdir/pack-*.rev &&
 123                 git cat-file --batch-check="%(objectsize:disk) %(objectname)" \
 124                         <objects >in-core &&
 125
 126                 git -c pack.writeReverseIndex=true repack -ad &&
 127                 test_path_is_file $packdir/pack-*.rev &&
 128                 git cat-file --batch-check="%(objectsize:disk) %(objectname)" \
 129                         <objects >on-disk &&
 130
 131                 test_cmp on-disk in-core
 132         )
 133 '
 134
 135 test_expect_success 'fsck succeeds on good rev-index' '
 136         test_when_finished rm -fr repo &&
 137         git init repo &&
 138         (
 139                 cd repo &&
 140
 141                 test_commit commit &&
 142                 git -c pack.writeReverseIndex=true repack -ad &&
 143                 git fsck 2>err &&
 144                 test_must_be_empty err
 145         )
 146 '
 147
 148 test_expect_success 'set up rev-index corruption tests' '
 149         git init corrupt &&
 150         (
 151                 cd corrupt &&
 152
 153                 test_commit commit &&
 154                 git -c pack.writeReverseIndex=true repack -ad &&
 155
 156                 revfile=$(ls .git/objects/pack/pack-*.rev) &&
 157                 chmod a+w $revfile &&
 158                 cp $revfile $revfile.bak
 159         )
 160 '
 161
 162 corrupt_rev_and_verify () {
 163         (
 164                 pos="$1" &&
 165                 value="$2" &&
 166                 error="$3" &&
 167
 168                 cd corrupt &&
 169                 revfile=$(ls .git/objects/pack/pack-*.rev) &&
 170
 171                 # Reset to original rev-file.
 172                 cp $revfile.bak $revfile &&
 173
 174                 printf "$value" | dd of=$revfile bs=1 seek="$pos" conv=notrunc &&
 175                 test_must_fail git fsck 2>err &&
 176                 grep "$error" err
 177         )
 178 }
 179
 180 test_expect_success 'fsck catches invalid checksum' '
 181         revfile=$(ls corrupt/.git/objects/pack/pack-*.rev) &&
 182         orig_size=$(wc -c <$revfile) &&
 183         hashpos=$((orig_size - 10)) &&
 184         corrupt_rev_and_verify $hashpos bogus \
 185                 "invalid checksum"
 186 '
 187
 188 test_expect_success 'fsck catches invalid row position' '
 189         corrupt_rev_and_verify 14 "\07" \
 190                 "invalid rev-index position"
 191 '
 192
 193 test_expect_success 'fsck catches invalid header: magic number' '
 194         corrupt_rev_and_verify 1 "\07" \
 195                 "reverse-index file .* has unknown signature"
 196 '
 197
 198 test_expect_success 'fsck catches invalid header: version' '
 199         corrupt_rev_and_verify 7 "\02" \
 200                 "reverse-index file .* has unsupported version"
 201 '
 202
 203 test_expect_success 'fsck catches invalid header: hash function' '
 204         corrupt_rev_and_verify 11 "\03" \
 205                 "reverse-index file .* has unsupported hash id"
 206 '
 207
 208 test_done