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