Andrew's git - gitweb.git/blob - t/t1060-object-corruption.sh

   1#!/bin/sh
   2
   3test_description='see how we handle various forms of corruption'
   4. ./test-lib.sh
   5
   6# convert "1234abcd" to ".git/objects/12/34abcd"
   7obj_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 "$1" into '\0'
  12corrupt_byte() {
  13        obj_file=$(obj_to_file "$1") &&
  14        chmod +w "$obj_file" &&
  15        printf '\0' | dd of="$obj_file" bs=1 seek="$2" conv=notrunc
  16}
  17
  18test_expect_success 'setup corrupt repo' '
  19        git init bit-error &&
  20        (
  21                cd bit-error &&
  22                test_commit content &&
  23                corrupt_byte HEAD:content.t 10
  24        )
  25'
  26
  27test_expect_success 'setup repo with missing object' '
  28        git init missing &&
  29        (
  30                cd missing &&
  31                test_commit content &&
  32                rm -f "$(obj_to_file HEAD:content.t)"
  33        )
  34'
  35
  36test_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
  49test_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
  56test_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
  64test_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.
  74test_expect_success 'clone --no-local --bare detects corruption' '
  75        test_must_fail git clone --no-local --bare bit-error corrupt-transport
  76'
  77
  78test_expect_success 'clone --no-local --bare detects missing object' '
  79        test_must_fail git clone --no-local --bare missing missing-transport
  80'
  81
  82test_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.
  88test_expect_success 'clone --local detects corruption' '
  89        test_must_fail git clone --local bit-error corrupt-checkout
  90'
  91
  92test_expect_success 'error detected during checkout leaves repo intact' '
  93        test_path_is_dir corrupt-checkout/.git
  94'
  95
  96test_expect_success 'clone --local detects missing objects' '
  97        test_must_fail git clone --local missing missing-checkout
  98'
  99
 100test_expect_failure 'clone --local detects misnamed objects' '
 101        test_must_fail git clone --local misnamed misnamed-checkout
 102'
 103
 104test_done