t/t1060-object-corruption.sh

   1 #!/bin/sh
   2
   3 test_description='see how we handle various forms of corruption'
   4 . ./test-lib.sh
   5
   6 # convert "1234abcd" to ".git/objects/12/34abcd"
   7 obj_to_file() {
   8         echo "$(git rev-parse --git-dir)/objects/$(git rev-parse "$1" | sed 's,..,&/,')"
   9 }
  10
  11 # Convert byte at offset "$2" of object "$1" into '\0'
  12 corrupt_byte() {
  13         obj_file=$(obj_to_file "$1") &&
  14         chmod +w "$obj_file" &&
  15         printf '\0' | dd of="$obj_file" bs=1 seek="$2" conv=notrunc
  16 }
  17
  18 test_expect_success 'setup corrupt repo' '
  19         git init bit-error &&
  20         (
  21                 cd bit-error &&
  22                 test_commit content &&
  23                 corrupt_byte HEAD:content.t 10
  24         )
  25 '
  26
  27 test_expect_success 'setup repo with missing object' '
  28         git init missing &&
  29         (
  30                 cd missing &&
  31                 test_commit content &&
  32                 rm -f "$(obj_to_file HEAD:content.t)"
  33         )
  34 '
  35
  36 test_expect_success 'setup repo with misnamed object' '
  37         git init misnamed &&
  38         (
  39                 cd misnamed &&
  40                 test_commit content &&
  41                 good=$(obj_to_file HEAD:content.t) &&
  42                 blob=$(echo corrupt | git hash-object -w --stdin) &&
  43                 bad=$(obj_to_file $blob) &&
  44                 rm -f "$good" &&
  45                 mv "$bad" "$good"
  46         )
  47 '
  48
  49 test_expect_success 'streaming a corrupt blob fails' '
  50         (
  51                 cd bit-error &&
  52                 test_must_fail git cat-file blob HEAD:content.t
  53         )
  54 '
  55
  56 test_expect_success 'read-tree -u detects bit-errors in blobs' '
  57         (
  58                 cd bit-error &&
  59                 rm -f content.t &&
  60                 test_must_fail git read-tree --reset -u HEAD
  61         )
  62 '
  63
  64 test_expect_success 'read-tree -u detects missing objects' '
  65         (
  66                 cd missing &&
  67                 rm -f content.t &&
  68                 test_must_fail git read-tree --reset -u HEAD
  69         )
  70 '
  71
  72 # We use --bare to make sure that the transport detects it, not the checkout
  73 # phase.
  74 test_expect_success 'clone --no-local --bare detects corruption' '
  75         test_must_fail git clone --no-local --bare bit-error corrupt-transport
  76 '
  77
  78 test_expect_success 'clone --no-local --bare detects missing object' '
  79         test_must_fail git clone --no-local --bare missing missing-transport
  80 '
  81
  82 test_expect_success 'clone --no-local --bare detects misnamed object' '
  83         test_must_fail git clone --no-local --bare misnamed misnamed-transport
  84 '
  85
  86 # We do not expect --local to detect corruption at the transport layer,
  87 # so we are really checking the checkout() code path.
  88 test_expect_success 'clone --local detects corruption' '
  89         test_must_fail git clone --local bit-error corrupt-checkout
  90 '
  91
  92 test_expect_success 'error detected during checkout leaves repo intact' '
  93         test_path_is_dir corrupt-checkout/.git
  94 '
  95
  96 test_expect_success 'clone --local detects missing objects' '
  97         test_must_fail git clone --local missing missing-checkout
  98 '
  99
 100 test_expect_failure 'clone --local detects misnamed objects' '
 101         test_must_fail git clone --local misnamed misnamed-checkout
 102 '
 103
 104 test_done