t/t6500-gc.sh

   1 #!/bin/sh
   2
   3 test_description='basic git gc tests
   4 '
   5
   6 . ./test-lib.sh
   7 . "$TEST_DIRECTORY"/lib-terminal.sh
   8
   9 test_expect_success 'setup' '
  10         # do not let the amount of physical memory affects gc
  11         # behavior, make sure we always pack everything to one pack by
  12         # default
  13         git config gc.bigPackThreshold 2g
  14 '
  15
  16 test_expect_success 'gc empty repository' '
  17         git gc
  18 '
  19
  20 test_expect_success 'gc does not leave behind pid file' '
  21         git gc &&
  22         test_path_is_missing .git/gc.pid
  23 '
  24
  25 test_expect_success 'gc --gobbledegook' '
  26         test_expect_code 129 git gc --nonsense 2>err &&
  27         test_i18ngrep "[Uu]sage: git gc" err
  28 '
  29
  30 test_expect_success 'gc -h with invalid configuration' '
  31         mkdir broken &&
  32         (
  33                 cd broken &&
  34                 git init &&
  35                 echo "[gc] pruneexpire = CORRUPT" >>.git/config &&
  36                 test_expect_code 129 git gc -h >usage 2>&1
  37         ) &&
  38         test_i18ngrep "[Uu]sage" broken/usage
  39 '
  40
  41 test_expect_success 'gc is not aborted due to a stale symref' '
  42         git init remote &&
  43         (
  44                 cd remote &&
  45                 test_commit initial &&
  46                 git clone . ../client &&
  47                 git branch -m develop &&
  48                 cd ../client &&
  49                 git fetch --prune &&
  50                 git gc
  51         )
  52 '
  53
  54 test_expect_success 'gc --keep-largest-pack' '
  55         test_create_repo keep-pack &&
  56         (
  57                 cd keep-pack &&
  58                 test_commit one &&
  59                 test_commit two &&
  60                 test_commit three &&
  61                 git gc &&
  62                 ( cd .git/objects/pack && ls *.pack ) >pack-list &&
  63                 test_line_count = 1 pack-list &&
  64                 BASE_PACK=.git/objects/pack/pack-*.pack &&
  65                 test_commit four &&
  66                 git repack -d &&
  67                 test_commit five &&
  68                 git repack -d &&
  69                 ( cd .git/objects/pack && ls *.pack ) >pack-list &&
  70                 test_line_count = 3 pack-list &&
  71                 git gc --keep-largest-pack &&
  72                 ( cd .git/objects/pack && ls *.pack ) >pack-list &&
  73                 test_line_count = 2 pack-list &&
  74                 test_path_is_file $BASE_PACK &&
  75                 git fsck
  76         )
  77 '
  78
  79 test_expect_success 'auto gc with too many loose objects does not attempt to create bitmaps' '
  80         test_config gc.auto 3 &&
  81         test_config gc.autodetach false &&
  82         test_config pack.writebitmaps true &&
  83         # We need to create two object whose sha1s start with 17
  84         # since this is what git gc counts.  As it happens, these
  85         # two blobs will do so.
  86         test_commit 263 &&
  87         test_commit 410 &&
  88         # Our first gc will create a pack; our second will create a second pack
  89         git gc --auto &&
  90         ls .git/objects/pack | sort >existing_packs &&
  91         test_commit 523 &&
  92         test_commit 790 &&
  93
  94         git gc --auto 2>err &&
  95         test_i18ngrep ! "^warning:" err &&
  96         ls .git/objects/pack/ | sort >post_packs &&
  97         comm -1 -3 existing_packs post_packs >new &&
  98         comm -2 -3 existing_packs post_packs >del &&
  99         test_line_count = 0 del && # No packs are deleted
 100         test_line_count = 2 new # There is one new pack and its .idx
 101 '
 102
 103 test_expect_success 'gc --no-quiet' '
 104         git -c gc.writeCommitGraph=true gc --no-quiet >stdout 2>stderr &&
 105         test_must_be_empty stdout &&
 106         test_line_count = 1 stderr &&
 107         test_i18ngrep "Computing commit graph generation numbers" stderr
 108 '
 109
 110 test_expect_success TTY 'with TTY: gc --no-quiet' '
 111         test_terminal git -c gc.writeCommitGraph=true gc --no-quiet >stdout 2>stderr &&
 112         test_must_be_empty stdout &&
 113         test_i18ngrep "Enumerating objects" stderr &&
 114         test_i18ngrep "Computing commit graph generation numbers" stderr
 115 '
 116
 117 test_expect_success 'gc --quiet' '
 118         git -c gc.writeCommitGraph=true gc --quiet >stdout 2>stderr &&
 119         test_must_be_empty stdout &&
 120         test_must_be_empty stderr
 121 '
 122
 123 run_and_wait_for_auto_gc () {
 124         # We read stdout from gc for the side effect of waiting until the
 125         # background gc process exits, closing its fd 9.  Furthermore, the
 126         # variable assignment from a command substitution preserves the
 127         # exit status of the main gc process.
 128         # Note: this fd trickery doesn't work on Windows, but there is no
 129         # need to, because on Win the auto gc always runs in the foreground.
 130         doesnt_matter=$(git gc --auto 9>&1)
 131 }
 132
 133 test_expect_success 'background auto gc does not run if gc.log is present and recent but does if it is old' '
 134         test_commit foo &&
 135         test_commit bar &&
 136         git repack &&
 137         test_config gc.autopacklimit 1 &&
 138         test_config gc.autodetach true &&
 139         echo fleem >.git/gc.log &&
 140         git gc --auto 2>err &&
 141         test_i18ngrep "^warning:" err &&
 142         test_config gc.logexpiry 5.days &&
 143         test-tool chmtime =-345600 .git/gc.log &&
 144         git gc --auto &&
 145         test_config gc.logexpiry 2.days &&
 146         run_and_wait_for_auto_gc &&
 147         ls .git/objects/pack/pack-*.pack >packs &&
 148         test_line_count = 1 packs
 149 '
 150
 151 test_expect_success 'background auto gc respects lock for all operations' '
 152         # make sure we run a background auto-gc
 153         test_commit make-pack &&
 154         git repack &&
 155         test_config gc.autopacklimit 1 &&
 156         test_config gc.autodetach true &&
 157
 158         # create a ref whose loose presence we can use to detect a pack-refs run
 159         git update-ref refs/heads/should-be-loose HEAD &&
 160         test_path_is_file .git/refs/heads/should-be-loose &&
 161
 162         # now fake a concurrent gc that holds the lock; we can use our
 163         # shell pid so that it looks valid.
 164         hostname=$(hostname || echo unknown) &&
 165         printf "$$ %s" "$hostname" >.git/gc.pid &&
 166
 167         # our gc should exit zero without doing anything
 168         run_and_wait_for_auto_gc &&
 169         test_path_is_file .git/refs/heads/should-be-loose
 170 '
 171
 172 # DO NOT leave a detached auto gc process running near the end of the
 173 # test script: it can run long enough in the background to racily
 174 # interfere with the cleanup in 'test_done'.
 175
 176 test_done