t/t6500-gc.sh

   1 #!/bin/sh
   2
   3 test_description='basic git gc tests
   4 '
   5
   6 . ./test-lib.sh
   7
   8 test_expect_success 'setup' '
   9         # do not let the amount of physical memory affects gc
  10         # behavior, make sure we always pack everything to one pack by
  11         # default
  12         git config gc.bigPackThreshold 2g
  13 '
  14
  15 test_expect_success 'gc empty repository' '
  16         git gc
  17 '
  18
  19 test_expect_success 'gc does not leave behind pid file' '
  20         git gc &&
  21         test_path_is_missing .git/gc.pid
  22 '
  23
  24 test_expect_success 'gc --gobbledegook' '
  25         test_expect_code 129 git gc --nonsense 2>err &&
  26         test_i18ngrep "[Uu]sage: git gc" err
  27 '
  28
  29 test_expect_success 'gc -h with invalid configuration' '
  30         mkdir broken &&
  31         (
  32                 cd broken &&
  33                 git init &&
  34                 echo "[gc] pruneexpire = CORRUPT" >>.git/config &&
  35                 test_expect_code 129 git gc -h >usage 2>&1
  36         ) &&
  37         test_i18ngrep "[Uu]sage" broken/usage
  38 '
  39
  40 test_expect_success 'gc is not aborted due to a stale symref' '
  41         git init remote &&
  42         (
  43                 cd remote &&
  44                 test_commit initial &&
  45                 git clone . ../client &&
  46                 git branch -m develop &&
  47                 cd ../client &&
  48                 git fetch --prune &&
  49                 git gc
  50         )
  51 '
  52
  53 test_expect_success 'gc --keep-largest-pack' '
  54         test_create_repo keep-pack &&
  55         (
  56                 cd keep-pack &&
  57                 test_commit one &&
  58                 test_commit two &&
  59                 test_commit three &&
  60                 git gc &&
  61                 ( cd .git/objects/pack && ls *.pack ) >pack-list &&
  62                 test_line_count = 1 pack-list &&
  63                 BASE_PACK=.git/objects/pack/pack-*.pack &&
  64                 test_commit four &&
  65                 git repack -d &&
  66                 test_commit five &&
  67                 git repack -d &&
  68                 ( cd .git/objects/pack && ls *.pack ) >pack-list &&
  69                 test_line_count = 3 pack-list &&
  70                 git gc --keep-largest-pack &&
  71                 ( cd .git/objects/pack && ls *.pack ) >pack-list &&
  72                 test_line_count = 2 pack-list &&
  73                 test_path_is_file $BASE_PACK &&
  74                 git fsck
  75         )
  76 '
  77
  78 test_expect_success 'auto gc with too many loose objects does not attempt to create bitmaps' '
  79         test_config gc.auto 3 &&
  80         test_config gc.autodetach false &&
  81         test_config pack.writebitmaps true &&
  82         # We need to create two object whose sha1s start with 17
  83         # since this is what git gc counts.  As it happens, these
  84         # two blobs will do so.
  85         test_commit 263 &&
  86         test_commit 410 &&
  87         # Our first gc will create a pack; our second will create a second pack
  88         git gc --auto &&
  89         ls .git/objects/pack | sort >existing_packs &&
  90         test_commit 523 &&
  91         test_commit 790 &&
  92
  93         git gc --auto 2>err &&
  94         test_i18ngrep ! "^warning:" err &&
  95         ls .git/objects/pack/ | sort >post_packs &&
  96         comm -1 -3 existing_packs post_packs >new &&
  97         comm -2 -3 existing_packs post_packs >del &&
  98         test_line_count = 0 del && # No packs are deleted
  99         test_line_count = 2 new # There is one new pack and its .idx
 100 '
 101
 102 run_and_wait_for_auto_gc () {
 103         # We read stdout from gc for the side effect of waiting until the
 104         # background gc process exits, closing its fd 9.  Furthermore, the
 105         # variable assignment from a command substitution preserves the
 106         # exit status of the main gc process.
 107         # Note: this fd trickery doesn't work on Windows, but there is no
 108         # need to, because on Win the auto gc always runs in the foreground.
 109         doesnt_matter=$(git gc --auto 9>&1)
 110 }
 111
 112 test_expect_success 'background auto gc does not run if gc.log is present and recent but does if it is old' '
 113         test_commit foo &&
 114         test_commit bar &&
 115         git repack &&
 116         test_config gc.autopacklimit 1 &&
 117         test_config gc.autodetach true &&
 118         echo fleem >.git/gc.log &&
 119         test_must_fail git gc --auto 2>err &&
 120         test_i18ngrep "^error:" err &&
 121         test_config gc.logexpiry 5.days &&
 122         test-tool chmtime =-345600 .git/gc.log &&
 123         test_must_fail git gc --auto &&
 124         test_config gc.logexpiry 2.days &&
 125         run_and_wait_for_auto_gc &&
 126         ls .git/objects/pack/pack-*.pack >packs &&
 127         test_line_count = 1 packs
 128 '
 129
 130 test_expect_success 'background auto gc respects lock for all operations' '
 131         # make sure we run a background auto-gc
 132         test_commit make-pack &&
 133         git repack &&
 134         test_config gc.autopacklimit 1 &&
 135         test_config gc.autodetach true &&
 136
 137         # create a ref whose loose presence we can use to detect a pack-refs run
 138         git update-ref refs/heads/should-be-loose HEAD &&
 139         test_path_is_file .git/refs/heads/should-be-loose &&
 140
 141         # now fake a concurrent gc that holds the lock; we can use our
 142         # shell pid so that it looks valid.
 143         hostname=$(hostname || echo unknown) &&
 144         printf "$$ %s" "$hostname" >.git/gc.pid &&
 145
 146         # our gc should exit zero without doing anything
 147         run_and_wait_for_auto_gc &&
 148         test_path_is_file .git/refs/heads/should-be-loose
 149 '
 150
 151 # DO NOT leave a detached auto gc process running near the end of the
 152 # test script: it can run long enough in the background to racily
 153 # interfere with the cleanup in 'test_done'.
 154
 155 test_done